CN111648769B - Drilling pile drilling while-drilling device suitable for judging boundary depth of earth-going and rock-going formations - Google Patents
Drilling pile drilling while-drilling device suitable for judging boundary depth of earth-going and rock-going formations Download PDFInfo
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- CN111648769B CN111648769B CN202010683570.0A CN202010683570A CN111648769B CN 111648769 B CN111648769 B CN 111648769B CN 202010683570 A CN202010683570 A CN 202010683570A CN 111648769 B CN111648769 B CN 111648769B
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- 238000005553 drilling Methods 0.000 title claims abstract description 110
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 12
- 238000005755 formation reaction Methods 0.000 title claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 32
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 239000011435 rock Substances 0.000 claims abstract description 26
- 238000005527 soil sampling Methods 0.000 claims abstract description 10
- 239000002689 soil Substances 0.000 claims description 37
- 230000005291 magnetic effect Effects 0.000 claims description 32
- 230000003321 amplification Effects 0.000 claims description 8
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- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 21
- 238000012360 testing method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
- E21B3/04—Rotary tables
- E21B3/06—Adaptation of rotary draw works to drive rotary tables
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B45/00—Measuring the drilling time or rate of penetration
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Earth Drilling (AREA)
Abstract
The invention discloses a drilling pile drilling while-drilling device suitable for judging the boundary depth of an upper earth and lower rock stratum, which comprises a drill rod, a drill bit, a positioning baffle ring, a soil sampling sleeve, a driving turntable, a lower supporting platform, a driven turntable and a drill rod clamping head, wherein a drill rod clamping head connecting guide rod extends into a hydraulic sleeve, and a lifting rope on the top of the hydraulic sleeve is connected with a winch drum and an angular displacement sensor; an ultrasonic velocimeter is arranged in the shielding cover, and the torque sensor props against the driving turntable through a jackscrew; the angular displacement sensor, the ultrasonic velocimeter and the torque sensor all output square wave signals after being amplified, filtered in a band-pass mode, RC shaping circuit and digital-to-analog conversion, wherein the output signals of the ultrasonic velocimeter are connected with the buzzer and the signal lamp through the relay. According to the invention, the information such as the rotation speed, torque, drilling depth and the like of the drill rod during drilling of the bored pile is collected, processed and analyzed, and the boundary depth of the earth and the rock is rapidly judged through intermittent alarm signals, so that guidance and basis are provided for determining formation distribution information for construction of the guard piles of deep foundation pit engineering of earth-going and rock-going formations.
Description
Technical Field
The invention relates to the technical field of pile foundation construction drilling and measurement, in particular to a drilling while drilling device for a drilled pile, which is suitable for judging the boundary depth of an upper soil stratum and a lower rock stratum.
Background
With the development of municipal foundation construction such as subways and rainwater regulation reservoirs in China, more and more foundation pit projects of upper soil and lower rock stratum are appeared in the cities such as Qingdao, dalian and Xiamen, namely foundation pit projects with earth and rock boundary depths being a plurality of meters above the substrate. The upper earth and lower rock stratum is the complex combination stratum characteristic formed by the upper fourth series unconsolidated stratum or the fully weathered stratum, the lower stratum and the earth and rock stratum interface (zone). The self-stabilization capability of the upper soil stratum is poor, the safety risks such as larger deformation and collapse are easy to be caused when the foundation pit is excavated, and the construction safety is ensured by adopting stronger enclosure measures such as enclosure piles, underground continuous walls and the like before the excavation; the lower rock stratum has stronger self-stabilization capability, the risk of integral collapse or harmful deformation is generally avoided when the foundation pit is excavated, and the safety of the foundation pit construction process can be ensured as long as the geometric instability of local rock blocks is prevented. The land and rock stratum interface (zone) is often a channel for enriching and seepage of groundwater, and the groundwater can cause surrounding rock softening degradation, strength reduction, seepage and erosion and the like, so that the excavation of a foundation pit is easy to cause temporary surface sliding instability, and is a key part of special attention for foundation pit construction. Scientific determination of the soil-rock boundary depth of the deep foundation pit construction of the upper soil and lower rock stratum is beneficial to reducing construction safety risks, improving engineering quality, saving construction cost and the like.
The bored pile has the advantages of high mechanization degree, strong stratum adaptability, flexible and quick construction and the like, and is the most common and effective technical measure adopted in the prior deep foundation pit enclosure structure of the earth-going and rock-going stratum. Drill pipe torque and rotational speed are basic parameters of drilling of a drilled pile, and are accompanied by the whole process of drilling of a drilled hole. And (3) drilling the drilling pile in the soil-up and rock-down stratum with obvious physical and mechanical characteristic difference, wherein the drill bit enters the stratum from the stratum, and the torque and the rotating speed of the drill rod show obvious abrupt change characteristics.
At present, a drilling pile drilling while-drilling test method is complex, data processing is complex, and no drilling pile drilling while-drilling special equipment specially aiming at determination of the boundary depth of an earth-going and rock-going stratum exists. Based on the method, the acquisition, the processing and the analysis of the drill rod torque and the rotating speed information in the drilling process of the bored pile are realized through the design of a whole set of scientific system, and then the judgment of the soil-rock boundary depth of the deep foundation pit engineering of the earth-going and rock-going stratum is completed.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a drilling pile drilling while-drilling device suitable for judging the boundary depth of an earth-going and rock-going stratum.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The drilling pile drilling while-drilling device suitable for judging the boundary depth of the upper soil and lower rock stratum comprises a drill rod, a drill bit, a positioning baffle ring, a soil taking sleeve, a driving turntable, a lower supporting platform, a driven turntable and a drill rod clamping head which are sequentially arranged on the drill rod from bottom to top, and is characterized in that the top end of the drill rod is connected with a guide rod through the drill rod clamping head, the top end of the guide rod sequentially passes through the middle supporting platform and the upper supporting platform and extends to the inside of a hydraulic sleeve, the top end of the guide rod is fixedly provided with a piston, the top end of the guide rod is sleeved in the hydraulic sleeve in a sealing manner through the piston, the bottom end surface of the hydraulic sleeve is fixedly arranged on the upper surface of the upper supporting platform, the top of the hydraulic sleeve is provided with a winch drum, the two ends of the winch drum are transversely arranged in bearing holes on two side walls of the hydraulic sleeve through pin shafts, one end pin shaft of the winch drum extends out of the hydraulic sleeve and is fixedly connected with an angular displacement sensor, a lifting rope is fixedly connected to the outer side of the winch drum in a winding manner, a guide rod clamping head is fixedly connected to the bottom end of the lifting rope, the lifting rope is fixedly connected with the top end of the guide rod through the guide rod clamping head, the drilling depth of a drill rod is measured through the angular displacement sensor, the corner of the angular displacement sensor is identical to the corner of the winch drum, the downward extension of the lifting rope meets L=rα, namely a corner signal α transmitted by the angular displacement sensor, and the outer diameter of the winch drum, namely the winding radius of the lifting rope is multiplied, so that the drilling depth of the guide rod and the drill rod connected with the guide rod is obtained, and the change speed of α also properly represents the drilling depth;
The middle support platform and the upper support platform are fixedly connected together through a plurality of shock absorption rods, each shock absorption rod consists of a spring rod section at the lower part and a screw rod section at the upper part, two ends of each spring rod section are fixedly connected to the middle support platform and the upper support platform respectively, the upper support platform is provided with a through hole corresponding to the screw rod section, and the upper part of each screw rod section is provided with a nut end cap;
A shielding cover is fixedly arranged between the middle supporting platform and the lower supporting platform, the driven turntable and the drill rod clamping head are both positioned in the shielding cover, the drill rod is fixedly connected with the central position of the driven turntable in a penetrating way through a flat key, a reflecting plate is embedded in the eccentric position of the upper surface of the driven turntable, an ultrasonic velocimeter is fixedly arranged at the bottom of the middle supporting platform, a transmitting plate corresponding to the reflecting plate is arranged at the bottom of the ultrasonic velocimeter, a transmitting end and a receiving end are arranged on the transmitting plate, ultrasonic signals are obliquely emitted from the transmitting end, the reflecting plate on the driven turntable intermittently reflects the ultrasonic signals to the receiving end along with the rotation of the drill rod, the transmitting end always transmits the signals, but the receiving end can only receive the signals when the reflecting plate is positioned right below the receiving end, and the gap time of the receiving end receives the signals is the time required by one circle of rotation of the driven turntable, so that the rotation speed of the drill rod is judged;
The driving turntable is fixedly sleeved on the drill rod through a flat key, torque sensors are further arranged around the driving turntable, the torque sensors are surrounded around the driving turntable through jackscrews, and the testing principle is as follows: the driving turntable drives the drill rod to rotate to realize drilling, and meanwhile, the drill rod can generate a reactive torque with the same size as the driving torque and opposite direction to act on the driving turntable, so that the driving turntable has a tendency of reverse rotation; the periphery of the driving turntable is provided with a plurality of jackscrew fixing turntables, so that jackscrews are subjected to the thrust of the reverse rotation of the driving turntable, and the magnitude of the thrust is in direct proportion to the torque of the driving turntable; according to the mechanical principle, a torque sensor is arranged between the driving turntable and the jackscrew, the torque sensor converts acting force of the jackscrew into oil pressure, and then an output oil pressure signal is converted into an electric signal, and the strength of the electric signal reflects the change of torque of the driving turntable; the reaction force received by the drill bit in the same soil is basically the same, the torque change is not large at the moment, but the torque change is large when the drill bit passes through the rock-soil demarcation zone, the invention is based on the principle that the torque sensor is adopted to assist the auxiliary ultrasonic velocimeter to jointly judge that the drill bit reaches the rock-soil demarcation zone;
The lower supporting platform is supported on the ground through a hydraulic rod, so that the driving turntable and the torque sensor are at a certain distance from the drill hole, and even a protective cover can be arranged to protect the driving turntable and the torque sensor and prevent the drill hole from soil discharge from affecting the test precision; the drill rod is also provided with a wall protection sleeve which extends from the opening of the drill hole to the ground;
The soil sampling sleeve passes through the supporting plate is fixedly connected with the outer wall of the drill rod, the soil taking sleeve, the supporting plate and the outer wall of the drill rod form a fan-shaped soil taking cavity;
The positioning baffle ring is welded on the outer wall of the drill rod and is used for retaining soil, so that the soil sampling sleeve is convenient for storing soil;
the angular displacement sensor, the ultrasonic velocimeter and the torque sensor are all connected with a computer.
Preferably, an ultrasonic transducer, an ultrasonic transmitter and an ultrasonic receiver which are respectively and electrically connected with the ultrasonic transducer are arranged in the ultrasonic velocimeter, the ultrasonic generator sends out ultrasonic signals from the transmitting end of the transmitting plate and then intermittently feeds back the ultrasonic signals from the reflecting plate to the receiving end, so that intermittent transmission of the ultrasonic signals is completed; the ultrasonic velocimeter which is practically applied to the invention is particularly an HJ60/ZME-I ultrasonic tachometer, a square wave signal is obtained according to intermittent display of a receiving signal and a blank signal of a receiving end, and when the width of the square wave suddenly increases or decreases, the rotational speed of a drill rod is proved to change greatly, and the drill rod is likely to pass through a rock-soil demarcation zone.
Further, a microporous foam layer is paved on the upper surface of the driven turntable and used for absorbing and dispersing ultrasonic waves, so that when the positions of the reflecting plate and the transmitting plate vertically correspond, the ultrasonic receiver can obtain obvious reflected ultrasonic signals.
Furthermore, the ultrasonic receiver is electrically connected with a pre-amplifier I, the pre-amplifier I is electrically connected with a band-pass filter I, the band-pass filter I is electrically connected with an RC shaping circuit I, the RC shaping circuit I outputs two groups of parallel output circuits respectively, one group of output circuits is input into a digital-to-analog converter, and the digital-to-analog converter is electrically connected with a square-wave oscilloscope;
The other group of output circuits are input into a relay, the relay is connected with a switch circuit, and the switch circuit is specifically composed of a 36V direct current power supply, a magnetic knife switch which is tightly attached or disconnected under the control of a coil of the relay, and a buzzer and a signal lamp which are connected in parallel;
The relay specifically comprises a triode T1, a resistor R1 connected in series with the triode T1, a resistor R2 connected in parallel with the triode T1, a diode D1 and a magnetic coil connected in parallel with the diode D1, wherein the magnetic coil of the relay is provided with a certain direction of electromagnetism through the control of the triode T1 and the reverse follow current of the diode D1 by outputting voltage at two ends, the control direction enables the magnetic coil to be opposite to the magnetic knife, the magnetic knife can be effectively in a closed state when the magnetic coil is electrified and automatically in ferromagnetic fit with the magnetic coil when the magnetic coil is not electrified, and the magnetic knife is in an open state;
The RC shaping circuit I is a RC series-parallel circuit which is composed of series resistance capacitors R3 and C3 and parallel resistance capacitors R4 and C4, the signal voltage obtained by the band-pass filter I is +/-0.5V, the voltage signal output to the two ends of the relay is +/-6V, which is equivalent to a certain amplification effect, and the RC shaping circuit I is used for triggering magnetism of a relay coil so as to control attachment and rejection of a magnetic knife, thereby enabling an ultrasonic receiver to rotate along with a drill rod to lead to receiving intermittent ultrasonic signals, and the intermittent ultrasonic signals are amplified by prepositive amplification, band-pass filtering, shaping amplification and digital-analog conversion to be relatively stable intermittent square signals, so that the intermittent opening of the relay can lead to intermittent sounding of the buzzer and intermittent lighting of a signal lamp, when the relay is opened, the integral alarm frequency of the sound lamp of the buzzer and the signal can timely reflect the change of the rotating speed of the drill rod, if the rotating speed in a soil layer is over 120R/min, namely, the rotating circle needs 0.5 seconds, namely the sound lamp signal can send an alarm within 0.5 seconds interval, if the rotating speed in a soil layer is under 30R/min, namely 2 seconds, namely the rotating circle needs 2 seconds, the sound lamp can be used for clearly judging the drilling hole and the interval, namely the drilling hole can be clearly and clearly judged by the drilling hole interval;
The preamplifier I, the band-pass filter I, RC shaping circuit I, the digital-to-analog converter and the square-wave oscilloscope are all arranged in a case of the computer and are electrically connected with a control chip of the computer, and the square-wave oscilloscope is electrically connected with a display screen of the computer to output a waveform analog signal displayed by the square wave.
Furthermore, the relay and the switch circuit are arranged in the alarm device shell, and the buzzer and the signal lamp are arranged outside the alarm device shell and used for alarming through intermittent sound lamp signals, so that the position and the range of the earth and rock boundary belt and the alarm of whether the drilling state is normal or not can be provided in the whole drilling process and at night. The invention amplifies the intermittent signal of the ultrasonic velocimeter to be used as an excitation switch power supply of the relay, thereby controlling the intermittent output of the alarm signals of the buzzer and the signal lamp, and having the rhythmic and real-time visual monitoring function.
Preferably, the angular displacement sensor is specifically a WDD35D-4 precision conductive potential type angular displacement sensor with a pointer meter;
The torque sensor is specifically an SK-8N01G turntable torque sensor, and comprises a pressure transmitter, a four-way joint, a pressure sensor, a pressure gauge and a high-pressure hose, wherein the high-pressure hose is connected with the four-way joint through a quick joint, pressure oil output by the pressure sensor flows into the four-way joint, a throttle plug is arranged at the position, according to field tests, the final electric signal obtained by the torque sensor is basically constant in the same soil property stage, and when the electric signal reaches a rock-soil boundary zone, the electric signal rapidly rises or falls to prove that the torque borne by a drill bit and a drill rod driven by the drill bit is greatly changed, and the slope great change point of an electric signal curve is likely to be the position of the rock-soil boundary zone;
The angular displacement sensor and the torque sensor are connected in parallel to a pre-amplifying circuit II, the pre-amplifying circuit II is electrically connected with a band-pass filter II, the band-pass filter II is electrically connected with an RC shaping circuit II, the RC shaping circuit II is completely identical with a circuit of the RC shaping circuit I and input and output voltage signals, the RC shaping circuit II is input into a digital-to-analog converter, and the digital-to-analog converter is electrically connected with a square wave oscilloscope;
The pre-amplifying circuit II, the band-pass filter II, the RC shaping circuit II, the digital-to-analog converter and the square-wave oscilloscope are all arranged in a case of the computer and are electrically connected with a control chip of the computer, and the square-wave oscilloscope is electrically connected with a display screen of the computer to output a waveform analog signal displayed by square waves;
The square wave output voltage signals U/V of the angular displacement sensor, the ultrasonic velocimeter and the torque sensor are on a display screen of the same square wave oscilloscope, the abscissa of the three groups of signals is the time t/s, and the ordinate of the three groups of signals is distributed from top to bottom, so that the three groups of signals are displayed in the same ordinate system, the one-to-one correspondence of the drilling depth, the rotating speed of the drill rod and the change of the torque of the drill rod along with time is completely described, namely, the specific values of the rotating speed of the drill rod and the torque of the drill rod when the drilling depth reaches a certain depth are completely described, and the slope of a change curve of the drilling depth is the drilling depth efficiency DPM; the three groups of signal outputs of the square wave oscilloscope are used for observing, recording and storing three groups of drilling parameter signals, so that the contrast observation is facilitated;
And the abnormal condition of the drill bit during drilling is pre-warned, such as the situation that the drill bit is excessively worn to cause slipping, at the moment, the drilling depth in the rock stratum is smaller, but the rotating speed of the drill rod is larger, the torque of the drill rod is smaller, and the abnormal drilling is indicated, and the drill rod and the drill bit are required to be taken out for overhauling and replacement.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the drilling depth of the drill rod is measured through the angular displacement sensor, the rotating speed of the drill rod is measured through the ultrasonic velocimeter, the torque force of the drill rod is measured through the torque sensor, and the influence on the rotating speed, the drilling speed and the torque force is carried out according to the condition that the drill bit enters different geological layers.
2. The invention takes the intermittent signal of the ultrasonic velocimeter as the excitation switch power supply of the relay, thereby controlling the intermittent output of the alarm signals of the buzzer and the signal lamp, and having the rhythmic and real-time visual monitoring function.
2. The invention outputs square wave signals of an angular displacement sensor, an ultrasonic velocimeter and a torque sensor on a display screen of the same square wave oscilloscope, three groups of analog signal voltages are in one-to-one correspondence with time variables, namely specific values of the rotation speed and the torque of a drill rod when reaching a certain depth, and the slope of a change curve of the drilling depth is the drilling depth efficiency DPM; the three groups of signal outputs of the square wave oscilloscope are used for observing, recording and storing three groups of drilling parameter signals, so that the contrast observation is facilitated; and the abnormal condition of the drill bit during drilling is pre-warned, such as the situation that the drill bit is excessively worn to cause slipping, at the moment, the drilling depth in the rock stratum is smaller, but the rotating speed of the drill rod is larger, the torque of the drill rod is smaller, and the abnormal drilling is indicated, and the drill rod and the drill bit are required to be taken out for overhauling and replacement.
4. Different from various measurement-while-drilling devices in the prior art, the invention is specially aimed at judging the earth-rock boundary zone, and provides a quick and simple measurement method which can measure the boundary points among rock-soil layers in a geological layer with a certain depth, thereby obtaining the most basic engineering rock mass quality evaluation.
Drawings
FIG. 1 is a schematic structural view of a bored pile drilling while-drilling device for determining the boundary depth of an earth-going and rock-going stratum according to the present invention;
FIG. 2 is a view showing the appearance of a winch drum in a bored pile drilling while-drilling device for determining the boundary depth of an earth-going and rock-going stratum;
FIG. 3 is a block diagram of a signal transmission circuit of an ultrasonic velocimeter in a bored pile drilling while-drilling device for determining the boundary depth of an earth-going and rock-going formation according to the present invention;
FIG. 4 is a schematic diagram showing the connection of the internal circuit of the casing of the warning device in the drilling while-drilling device for determining the boundary depth of the earth-going and rock-going formations according to the present invention;
FIG. 5 is a block diagram of a signal transmission circuit of an angular displacement sensor and a torque sensor in a bored pile drilling while-drilling device for determining the boundary depth of an earth-going and rock-going formation according to the present invention;
In the figure: drill rod 1, drill bit 2, location baffle ring 3, casing 4 that fetches earth, drive carousel 5, lower supporting platform 6, driven carousel 7, drill rod dop 8, guide arm 9, well supporting platform 10, upper supporting platform 11, hydraulic sleeve 12, winch cylinder 13, angular displacement sensor 14, lifting rope 15, guide arm dop 16, shock attenuation pole 17, shield 18, reflecting plate 19, ultrasonic velocimeter 20, torque sensor 21, hydraulic rod 22, dado sleeve 23, alarm device casing 24.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-2, a drilling pile drilling while drilling device suitable for judging the boundary depth of an upper earth and lower rock stratum comprises a drill rod 1, a drill bit 2, a positioning baffle ring 3, a soil taking sleeve 4, a driving turntable 5, a lower supporting platform 6, a driven turntable 7 and a drill rod clamping head 8 which are sequentially arranged on the drill rod 1 from bottom to top, and is characterized in that the top end of the drill rod 1 is connected with a guide rod 9 through the drill rod clamping head 8, the top end of the guide rod 9 sequentially passes through a middle supporting platform 10 and an upper supporting platform 11 and extends to the inside of a hydraulic sleeve 12, the top end of the guide rod 9 is fixedly provided with a piston, the top end of the guide rod 9 is sleeved in the hydraulic sleeve 12 through the piston in a sealing manner, the bottom end surface of the hydraulic sleeve 12 is fixedly arranged on the upper surface of the upper supporting platform 11, The top of the hydraulic sleeve 12 is provided with a winch drum 13, two ends of the winch drum 13 are transversely arranged in bearing holes on two side walls of the hydraulic sleeve 12 through pin shafts, one end pin shaft of the winch drum 13 extends out of the hydraulic sleeve 12 and is fixedly connected with an angular displacement sensor 14, a lifting rope 15 is fixedly wound on the outer side of the winch drum 13, the bottom end of the lifting rope 15 is fixedly connected with a guide rod clamping head 16, the lifting rope 15 is fixedly connected with the top end of the guide rod 9 through the guide rod clamping head 16, the drilling depth of the drill rod 1 is measured through the angular displacement sensor 14, the rotation angle of the angular displacement sensor 14 is the same as that of the winch drum 13, the downward extension of the lifting rope 15 meets L=rα, namely a rotation angle signal α transmitted by the angular displacement sensor 14, multiplying the outer diameter of the winch drum 13, namely the winding radius of the lifting rope 15, so as to obtain the drilling depth of the guide rod 9 and the drill rod 1 connected with the guide rod, wherein the change speed of alpha also properly represents the drilling depth; the middle supporting platform 10 and the upper supporting platform 11 are fixedly connected together through a plurality of shock absorption rods 17, the shock absorption rods 17 consist of a spring rod section at the lower part and a screw rod section at the upper part, two ends of the spring rod section are fixedly connected to the middle supporting platform 10 and the upper supporting platform 11 respectively, the upper supporting platform 11 is provided with a through hole corresponding to the screw rod section, and the upper part of the screw rod section is provided with a nut end cap; A shielding cover 18 is fixedly arranged between the middle supporting platform 10 and the lower supporting platform 6, the driven turntable 7 and the drill rod clamping head 8 are both positioned in the shielding cover 18, the drill rod 1 is fixedly connected with the center position of the driven turntable 7 in a penetrating way through a flat key, a reflecting plate 19 is embedded in the eccentric position of the upper surface of the driven turntable 7, an ultrasonic velocimeter 20 is fixedly arranged at the bottom of the middle supporting platform 10, a transmitting plate corresponding to the reflecting plate 19 is arranged at the bottom of the ultrasonic velocimeter 20, a transmitting end and a receiving end are arranged on the transmitting plate, ultrasonic signals are obliquely emitted from the transmitting end, the reflecting plate 19 on the driven turntable 7 intermittently reflects the ultrasonic signals to the receiving end along with the rotation of the driven turntable 8 driven by the drill rod 1, The transmitting end always transmits signals, but the receiving end can only receive the signals when the reflecting plate 19 is positioned right below the transmitting end, and the gap time between the receiving end and the receiving end is the time required by one circle of rotation of the driven turntable 7, so that the rotating speed of the drill rod 1 is judged; The driving turntable 5 is fixedly sleeved on the drill rod 1 through a flat key, torque sensors 21 are further arranged around the driving turntable 5, the torque sensors 21 surround the driving turntable 5 through jackscrews, and the testing principle is as follows: the driving turntable 5 drives the drill rod 1 to rotate to realize drilling, and meanwhile, the drill rod 1 can generate a reactive torque with the same size as the driving torque and opposite direction to act on the driving turntable 5, so that the driving turntable 5 has a tendency of reverse rotation; the periphery of the driving turntable 5 is provided with a plurality of jackscrew fixing turntables, so that jackscrews are subjected to the thrust of the reverse rotation of the driving turntable 5, and the magnitude of the thrust is in direct proportion to the torque of the driving turntable 5; according to the mechanical principle, a torque sensor 21 is arranged between the driving turntable 5 and the jackscrew, the torque sensor converts acting force of the jackscrew into oil pressure, and then an output oil pressure signal is converted into an electric signal, and the strength of the electric signal reflects the change of torque of the driving turntable 5; the reaction force received by the drill bit 2 in the same soil is basically the same, the torque change is not large at the moment, but the torque change is large when the drill bit 2 passes through the rock-soil demarcation zone, the invention is based on the principle that the torque sensor 21 is adopted to assist the auxiliary ultrasonic velocimeter 20 to jointly judge that the drill bit reaches the rock-soil demarcation zone; the lower supporting platform 6 is supported on the ground through the hydraulic rod 22, so that the driving turntable 5 and the torque sensor 21 are at a certain distance from the drill hole, and even a protective cover can be arranged to protect the driving turntable 5 and the torque sensor 21 and prevent the drill hole from soil discharge from affecting the test precision; the drill rod 1 is also provided with a wall protection sleeve 23, and the wall protection sleeve 23 extends from the drilling hole opening to the ground; The soil sampling sleeve 4 is fixedly connected to the outer wall of the drill rod 1 through a supporting plate, and the soil sampling sleeve 4, the supporting plate and the outer wall of the drill rod 1 form a fan-shaped soil sampling cavity; the positioning baffle ring 3 is welded on the outer wall of the drill rod 1, and the positioning baffle ring 3 is used for retaining soil, so that the soil taking sleeve 4 is convenient for storing soil; the angular displacement sensor 14, the ultrasonic velocimeter 20 and the torque sensor 21 are all connected with a computer.
Referring to fig. 3, an ultrasonic transducer, an ultrasonic transmitter and an ultrasonic receiver electrically connected with the ultrasonic transducer are provided inside the ultrasonic velocimeter 20, the ultrasonic generator transmits an ultrasonic signal from a transmitting end of the transmitting plate and intermittently feeds back the ultrasonic signal from the reflecting plate 19 to a receiving end, thereby completing intermittent transmission of the ultrasonic signal; the ultrasonic velocimeter 20 which is practically applied to the invention is particularly an HJ60/ZME-I ultrasonic tachometer, a square wave signal is obtained according to the intermittent display of the receiving signal and the blank signal of the receiving end, and when the width of the square wave is suddenly increased or reduced, the great change of the rotational speed of the drill rod 1 is indicated, and the drill rod is likely to pass through a rock-soil demarcation zone.
Referring to fig. 1 and 3, a micro-porous foam layer is laid on the upper surface of the driven turntable 7 to absorb and disperse ultrasonic waves, so that the ultrasonic receiver can obtain a significant reflected ultrasonic signal when the reflecting plate 19 vertically corresponds to the position of the transmitting plate.
Referring to fig. 3-4, the ultrasonic receiver is electrically connected with a preamplifier I, the preamplifier I is electrically connected with a band-pass filter I, the band-pass filter I is electrically connected with an RC shaping circuit I, the RC shaping circuit I outputs two groups of parallel output circuits respectively, one group of output circuits is input into a digital-to-analog converter, and the digital-to-analog converter is electrically connected with a square wave oscilloscope; the other group of output circuits are input into a relay, the relay is connected with a switch circuit, and the switch circuit is specifically composed of a 36V direct current power supply, a magnetic knife switch which is tightly attached or disconnected under the control of a coil of the relay, and a buzzer and a signal lamp which are connected in parallel; the relay specifically comprises a triode T1, a resistor R1 connected in series with the triode T1, a resistor R2 connected in parallel with the triode T1, a diode D1 and a magnetic coil connected in parallel with the diode D1, wherein the magnetic coil of the relay is provided with a certain direction of electromagnetism through the control of the triode T1 and the reverse follow current of the diode D1 by outputting voltage at two ends, the control direction enables the magnetic coil to be opposite to the magnetic knife, the magnetic knife can be effectively in a closed state when the magnetic coil is electrified and automatically in ferromagnetic fit with the magnetic coil when the magnetic coil is not electrified, and the magnetic knife is in an open state; the RC shaping circuit I is a RC series-parallel circuit which is composed of series resistance capacitors R3 and C3 and parallel resistance capacitors R4 and C4, the signal voltage obtained by the band-pass filter I is +/-0.5V, the voltage signal output to the two ends of the relay is +/-6V, which is equivalent to a certain amplification effect, and the RC shaping circuit I is used for triggering magnetism of a relay coil so as to control attachment and rejection of a magnetic knife, thereby enabling an ultrasonic receiver to rotate along with a drill rod 1 to lead to receiving intermittent ultrasonic signals, and the intermittent ultrasonic signals are amplified by prepositive amplification, band-pass filtering, shaping amplification and digital-analog conversion to be relatively stable intermittent square signals, so that the intermittent opening of the relay leads to intermittent sounding of the buzzer and intermittent lighting of a signal lamp, when the alarm lamp is opened, the integral alarm frequency of the buzzer and the signal can timely reflect the change of the rotating speed of the drill rod 1, if the rotating speed in a soil layer is over 120R/min, namely, the rotating speed of the sound lamp signal is required to be 0.5 seconds, and an alarm is sent once within a distance of 0.5 seconds, if the rotating speed in a rock stratum is always under 30R/min, namely 2 seconds, namely the rotating speed is required to be used for clearly monitoring the drilling hole, the drilling hole can be clearly and clearly judged by the drilling hole is quite different from the distance, and the drilling hole can be clearly judged in the whole process; the preamplifier I, the band-pass filter I, RC shaping circuit I, the digital-to-analog converter and the square-wave oscilloscope are all arranged in a case of the computer and are electrically connected with a control chip of the computer, and the square-wave oscilloscope is electrically connected with a display screen of the computer to output a waveform analog signal displayed by the square wave.
Referring to fig. 4, a relay and a switching circuit are provided in the alarm device housing 24, and a buzzer and a signal lamp are provided outside the alarm device housing 24 for alarming by intermittent sound lamp signals, so that an alarm of whether the position and range of the earth and rock boundary zone and the drilling state are normal or not can be provided in the whole drilling process and at night. The invention amplifies the intermittent signal of the ultrasonic velocimeter 20 to be used as an excitation switch power supply of the relay, thereby controlling the intermittent output of the alarm signals of the buzzer and the signal lamp, and having a rhythmic and real-time visual monitoring function.
Referring to FIG. 5, the angular displacement sensor 14 is embodied as a WDD35D-4 precision conductive potentiometric angular displacement sensor with a pointer meter; the torque sensor 21 is specifically an SK-8N01G turntable torque sensor, and comprises a pressure sensor, a four-way joint, a pressure sensor, a pressure gauge and a high-pressure hose, wherein the high-pressure hose is connected with the four-way joint through a quick joint, pressure oil output by the pressure sensor flows into the four-way joint, a throttle plug is arranged at the position, according to field tests, the final electric signal obtained by the torque sensor is basically constant in the same soil property stage, and when the electric signal reaches a rock-soil boundary zone, the electric signal rapidly rises or falls to prove that the torque borne by a drill bit and a drill rod driven by the drill bit is greatly changed, and the slope great change point of an electric signal curve is likely to be the position of the rock-soil boundary zone; the angular displacement sensor 14 and the torque sensor 21 are connected in parallel to a pre-amplifying circuit II, the pre-amplifying circuit II is electrically connected with a band-pass filter II, the band-pass filter II is electrically connected with an RC shaping circuit II, the RC shaping circuit II is completely the same as the circuit of the RC shaping circuit I and the input and output voltage signals, the RC shaping circuit II is input into a digital-to-analog converter, and the digital-to-analog converter is electrically connected with a square wave oscilloscope; the pre-amplifying circuit II, the band-pass filter II, the RC shaping circuit II, the digital-to-analog converter and the square-wave oscilloscope are all arranged in a case of the computer and are electrically connected with a control chip of the computer, and the square-wave oscilloscope is electrically connected with a display screen of the computer to output a waveform analog signal displayed by square waves; square wave signals of the angular displacement sensor 14, the ultrasonic velocimeter 20 and the torque sensor 21 are output on a display screen of the same square wave oscilloscope, the abscissa of the three groups of signals is time t/s, and the ordinate of the three groups of signals is distributed from top to bottom, so that the three groups of signals are displayed in the same ordinate system, the one-to-one correspondence of three groups of signals of drilling depth, drill rod rotating speed and drill rod torque along with time change is completely described, namely, specific values of drill rod rotating speed and drill rod torque when a certain depth is reached, and the slope of a change curve of drilling depth is drilling depth efficiency DPM; the three groups of signal outputs of the square wave oscilloscope are used for observing, recording and storing three groups of drilling parameter signals, so that the contrast observation is facilitated; and early warning out the unusual condition when drill bit 2 drills, if drill bit 2 wearing and tearing excessively lead to the condition of skidding, the drilling depth in the stratum is less this moment, but the drilling rod rotational speed is great, the drilling rod moment of torsion is less, indicates that improper punching, need take out drilling rod 1 and drill bit 2 and overhaul the change.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. Drilling pile drilling while drilling device suitable for judging the boundary depth of an upper earth and lower rock stratum comprises a drill rod (1) and a drill bit (2), a positioning baffle ring (3), a soil taking sleeve (4), a driving turntable (5), a lower supporting platform (6), a driven turntable (7) and a drill rod clamping head (8) which are sequentially arranged on the drill rod (1) from bottom to top, and is characterized in that the top end of the drill rod (1) is connected with a guide rod (9) through the drill rod clamping head (8), the top end of the guide rod (9) sequentially penetrates through a middle supporting platform (10) and an upper supporting platform (11) and extends to the inside of a hydraulic sleeve (12), the top end of the guide rod (9) is fixedly provided with a piston, the top end of the guide rod (9) is sheathed in the hydraulic sleeve (12) in a sealing manner through the piston, the bottom end surface of the hydraulic sleeve (12) is fixedly arranged on the upper surface of the upper supporting platform (11), winch drums (13) are erected at the top of the hydraulic sleeve (12), two ends of each winch drum (13) are respectively connected with a guide rod (9) through pin shafts in bearing holes on two side walls of the hydraulic sleeve (12), one end of each winch drum (13) sequentially penetrates through a middle supporting platform (10) and the upper supporting platform (11) and extends to the inside a hydraulic sleeve (12), one end (15) is fixedly connected with a lifting rope (15), the lifting rope (15) is fixedly connected with the top end of the guide rod (9) through a guide rod clamping head (16);
The middle supporting platform (10) and the upper supporting platform (11) are fixedly connected together through a plurality of shock absorption rods (17), the shock absorption rods (17) consist of spring rod sections at the lower part and screw rod sections at the upper part, two ends of each spring rod section are fixedly connected to the middle supporting platform (10) and the upper supporting platform (11) respectively, the upper supporting platform (11) is provided with a through hole corresponding to each screw rod section, and the upper parts of the screw rod sections are provided with nut end caps;
a shielding cover (18) is fixedly arranged between the middle supporting platform (10) and the lower supporting platform (6), the driven turntable (7) and the drill rod clamping head (8) are both positioned in the shielding cover (18), the drill rod (1) is fixedly connected with the central position of the driven turntable (7) in a penetrating way through a flat key, a reflecting plate (19) is embedded in the eccentric position of the upper surface of the driven turntable (7), an ultrasonic velocimeter (20) is fixedly arranged at the bottom of the middle supporting platform (10), a transmitting plate corresponding to the reflecting plate (19) is arranged at the bottom of the ultrasonic velocimeter (20), and a transmitting end and a receiving end are arranged on the transmitting plate;
The driving turntable (5) is fixedly sleeved on the drill rod (1) through a flat key, torque sensors (21) are further arranged around the driving turntable (5), and the torque sensors (21) are surrounded around the driving turntable (5) through jackscrews;
the lower supporting platform (6) is supported on the ground through a hydraulic rod (22), so that the driving turntable (5) and the torque sensor (21) are spaced from the drill hole; the drill rod (1) is also provided with a wall protection sleeve (23), and the wall protection sleeve (23) extends from the drilling hole opening part to the ground;
The soil sampling sleeve (4) is fixedly connected to the outer wall of the drill rod (1) through a supporting plate, and the soil sampling sleeve (4), the supporting plate and the outer wall of the drill rod (1) form a fan-shaped soil sampling cavity;
The positioning baffle ring (3) is welded on the outer wall of the drill rod (1), and the positioning baffle ring (3) is used for retaining soil so as to facilitate the soil storage of the soil sampling sleeve (4);
the angular displacement sensor (14), the ultrasonic velocimeter (20) and the torque sensor (21) are all connected with a computer.
2. Drilling pile drilling while drilling device suitable for determining the boundary depth of an earth-going and rock-going formation according to claim 1, characterized in that the ultrasonic velocimeter (20) is internally provided with an ultrasonic transducer, and an ultrasonic transmitter and an ultrasonic receiver electrically connected with the ultrasonic transducer, respectively.
3. Drilling pile drilling while drilling device suitable for determining the boundary depth of an earth-going and rock-going formation according to claim 2, characterized in that the upper surface of the driven turntable (7) is laid with a layer of microporous foam.
4. The drilling pile drilling while drilling device suitable for determining the boundary depth of the earth-going and rock-going formations according to claim 3, wherein the ultrasonic receiver is electrically connected with a preamplifier I, the preamplifier I is electrically connected with a band-pass filter I, the band-pass filter I is electrically connected with an RC shaping circuit I, the RC shaping circuit I outputs two groups of parallel output circuits respectively, one group of output circuits is input into a digital-to-analog converter, and the digital-to-analog converter is electrically connected with a square wave oscilloscope;
The other group of output circuits are input into a relay, the relay is connected with a switch circuit, and the switch circuit is specifically composed of a 36V direct current power supply, a magnetic knife switch which is tightly attached or disconnected under the control of a coil of the relay, and a buzzer and a signal lamp which are connected in parallel;
The relay specifically comprises a triode T1, a resistor R1 connected in series with the triode T1, a resistor R2 connected in parallel with the triode T1, a diode D1 and a magnetic coil connected in parallel with the diode D1, wherein the magnetic coil of the relay is provided with a certain direction of electromagnetism through the control of the triode T1 and the reverse follow current of the diode D1, the control direction enables the magnetic coil to be opposite to the magnetic knife, the magnetic knife can be effectively in a closed state when the magnetic coil is electrified and is automatically in ferromagnetic fit with the magnetic coil when the magnetic coil is not electrified, and the magnetic knife is in an open state;
The RC shaping circuit I is specifically an RC series-parallel circuit consisting of series resistance capacitors R3 and C3 and parallel resistance capacitors R4 and C4, the signal voltage obtained from the band-pass filter I is +/-0.5V, and the voltage signal output to the two ends of the relay is +/-6V;
The preamplifier I, the band-pass filter I, RC shaping circuit I, the digital-to-analog converter and the square-wave oscilloscope are all arranged in a case of the computer and are electrically connected with a control chip of the computer, and the square-wave oscilloscope is electrically connected with a display screen of the computer to output a waveform analog signal displayed by square waves.
5. The drilling pile drilling while drilling device suitable for determining the boundary depth of the earth and rock formations according to claim 4, wherein the relay and the switch circuit are arranged in an alarm device shell (24), and the buzzer and the signal lamp are arranged outside the alarm device shell (24) and used for providing an alarm of the boundary depth and range of the earth and rock and the normal or abnormal state of the drilling under the condition of weak light in the whole drilling process.
6. Drilling pile drilling while drilling device suitable for determining the demarcation depth of an earth-going and rock-going formation according to claim 1, characterized in that said angular displacement sensor (14) is in particular a WDD35D-4 precision conductive potential type angular displacement sensor with a pointer gauge;
The torque sensor (21) is specifically an SK-8N01G turntable torque sensor, and comprises a pressure transmitter, a four-way joint, a pressure sensor, a pressure gauge and a high-pressure hose, wherein the high-pressure hose is connected with the four-way joint through a quick joint, pressure oil output by the pressure sensor flows into the four-way joint, and a throttle plug is arranged at the position;
The angular displacement sensor (14) and the torque sensor (21) are connected in parallel to a pre-amplification circuit II, the pre-amplification circuit II is electrically connected with a band-pass filter II, the band-pass filter II is electrically connected with an RC shaping circuit II, the RC shaping circuit II is identical to a circuit of the RC shaping circuit I and input and output voltage signals, the RC shaping circuit II is input into a digital-to-analog converter, and the digital-to-analog converter is electrically connected with a square wave oscilloscope;
The pre-amplifying circuit II, the band-pass filter II, the RC shaping circuit II, the digital-to-analog converter and the square-wave oscilloscope are all arranged in a case of the computer and are electrically connected with a control chip of the computer, and the square-wave oscilloscope is electrically connected with a display screen of the computer to output a waveform analog signal displayed by square waves;
The square wave output voltage signals U/V of the angular displacement sensor (14), the ultrasonic velocimeter (20) and the torque sensor (21) are on the display screen of the same square wave oscilloscope, the abscissas of the three groups of signals are all time t/s, the ordinates of the three groups of signals are distributed from top to bottom, and the three groups of signals are displayed in the same ordinate system.
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| US5899958A (en) * | 1995-09-11 | 1999-05-04 | Halliburton Energy Services, Inc. | Logging while drilling borehole imaging and dipmeter device |
| US6491115B2 (en) * | 2000-03-15 | 2002-12-10 | Vermeer Manufacturing Company | Directional drilling machine and method of directional drilling |
| US8827006B2 (en) * | 2005-05-12 | 2014-09-09 | Schlumberger Technology Corporation | Apparatus and method for measuring while drilling |
| CN2898265Y (en) * | 2006-01-06 | 2007-05-09 | 华北石油管理局钻井工艺研究院 | Continuous large-torque vortex fastener |
| US9212550B2 (en) * | 2013-03-05 | 2015-12-15 | Schlumberger Technology Corporation | Sampler chamber assembly and methods |
| CN103760005B (en) * | 2013-12-24 | 2016-04-13 | 北京市市政工程研究院 | A kind of deep well drilling Rock And Soil intensity distributions proving installation |
| US9488006B2 (en) * | 2014-02-14 | 2016-11-08 | Baker Hughes Incorporated | Downhole depth measurement using tilted ribs |
| CN106351648B (en) * | 2016-09-13 | 2023-10-31 | 中国石油天然气集团公司 | Device and method for monitoring deep water drilling pipe while drilling |
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