CN116164165A - A pipe jacking construction method for an open channel under an expressway - Google Patents

Abstract

The invention belongs to the technical field of pipe jacking construction, in particular to a method for pipe jacking construction of an open channel of a underpass expressway, which comprises the following steps: step one, manufacturing cutting edge feet and open caisson, wherein the cutting edge feet, well body steel bars, brackets, templates and concrete are included, and a reserved hole is temporarily plugged by adopting a brick wall formed by bricking Mu20 bricks and M10 cement paste; step two, digging soil for sinking the well body, and beginning sinking when the strength of the open caisson concrete reaches 100% of the design strength. According to the construction method for the underpass expressway open channel pipe jacking, when the muddy water balance pipe jacking machine tilts, the laser receiver can control the circumferential dynamic tilt detection mechanism to detect the tilt direction in a circular motion mode without receiving light, so that the corresponding tilt deviation correction driving mechanism is controlled to perform deviation correction operation, and further, the phenomenon that the drilling angle deviates to cause drilling dislocation is avoided, the construction efficiency is improved, real-time monitoring and deviation correction of a tool bit can be timely carried out, and the axis, elevation and line type of a pipeline are guaranteed to the greatest extent.

Description

A pipe jacking construction method for an open channel passing through an expressway

technical field

The invention relates to the technical field of pipe jacking construction, in particular to a pipe jacking construction method for an open channel passing through an expressway.

Background technique

Pipe jacking construction is a non-excavation construction method, and it is a pipeline burying construction technology that does not excavate or excavates less. Pipe jacking construction is to use the jacking force generated by the jacking equipment in the working pit to overcome the friction between the pipeline and the surrounding soil, push the pipeline into the soil according to the designed slope, and transport the earth away. After one section of pipe has been jacked into the soil layer, the second section of pipe will continue to be jacked. Its principle is to push the tool pipe or roadheader from the working pit through the soil layer to the receiving pit by means of the thrust of the main top oil cylinder, the pipeline room, and the relay room. The pipeline is buried between the two pits immediately after the tool pipe or the roadheader.

The mud-water balance pipe jacking machine sends the mud water with a certain concentration to the excavation surface by the water pump, and then adjusts the inlet water pressure through the bypass pressure adjustment valve in the well and adjusts the speed of the mud discharge pump to balance the groundwater pressure and the soil pressure of the excavation surface. , so that the cutter head of the roadheader works under balanced pressure, so as to prevent ground subsidence and uplift due to the instability of the excavation surface. Problems such as leveling often cause deflection problems with large deviations, and even cause jacking failures in severe cases.

In the prior art, frequent measurement and frequent rectification are adopted: the axis and elevation of the tool head are measured every time a certain distance is jacked up. When a deviation is found, the deviation correcting personnel are required to report the deviation correction angle of the tool head, the oil pressure value of the jack in all directions, the deviation of the axis, etc. to the central control room and enter it into the microcomputer. The microcomputer will display the correction method and data, and correct the deviation according to this, which will lead to the inability to monitor the deviation in real time. After the time of jacking up one end, manual measurement is performed, and the amount of deviation is calculated by comparing multiple sets of data for transmission. operation, which in turn leads to low efficiency and slow construction progress. It is impossible to perform deviation correction detection and correction adjustment while jacking operation. Therefore, a pipe jacking construction method for open channels under the expressway is needed.

Contents of the invention

Based on the existing technical problems, the present invention proposes a pipe jacking construction method for an open channel under an expressway.

The present invention proposes a construction method for pipe jacking in an open channel under an expressway, comprising: Step 1, making the blade foot and the caisson, including the blade foot and well body steel bars, brackets, formwork and concrete, and adopting Mu20 bricks for the reserved opening and temporary blockage of brick walls with M10 cement slurry;

Step 2, the well body is excavated and subsidence, and the caisson concrete can start to sink when the strength of the caisson concrete reaches 100% of the design strength;

Step 3. Repeat the steps of step 1 and step 2 until the caisson is lowered to the design position, and carry out the bottom sealing operation, including the bottom sealing of the caisson, the production of bottom plate reinforcement, the concrete pouring of the bottom plate and the concrete maintenance. The bottom layer of the bottom cover is backfilled with large stones, and the middle layer is used G35 reinforced concrete floor, the bottom layer is backfilled with C25 plain concrete;

Step 4. Pipeline drilling and jacking. The mud-water balance pipe jacking machine is used for drilling operations. At the same time as the drilling operation, the deviation correction mechanism is used to perform real-time deviation correction operations, and the pipeline jacking and installation operations are performed at the same time until the drilling operation is completed. End and end of pipe jacking installation;

The deviation correction mechanism includes an installation ring installed close to the mud-water balance pipe jacking machine and the interior of the opposite pipeline and a jacking drive mechanism. The inside of the installation ring is provided with an auxiliary installation concentric mechanism, and one side of the installation ring is respectively provided with a circular dynamic Tilt detection mechanism and tilt correction drive mechanism;

The jacking drive mechanism realizes the pipeline jacking and conveying operation;

The auxiliary installation concentric mechanism realizes that the axis of the installation ring and the axis of the pipeline are located at the same axis adjustment operation;

The circular dynamic tilt detection mechanism realizes real-time detection of tilt operation during the drilling operation of the mud-water balance pipe jacking machine;

The tilt correction mechanism realizes the correction and adjustment operation after the circumferential dynamic tilt detection mechanism detects the tilt;

Step 5: Exit the hole, check the operation of each link; and when the machine head exits the hole, the jacking operation should be cautious, steady, and advanced at a uniform speed. Immediately after the first section of the pipe exits the hole, start to inject thixotropic mud evenly; within 5m of the pipe section exiting the hole Inside, check and urge the construction personnel to gradually adjust the construction parameters of soil cutting, mud discharge, top speed, earth pressure, axis, and elevation to the normal state.

Preferably, the jacking drive mechanism is installed inside the bottom end of the caisson, the jacking drive mechanism includes a mounting plate and a guide bottom plate, the mounting surface of the mounting plate is fixedly installed with the inner wall of the caisson, the The bottom of the guide base plate is fixedly installed with the inner bottom wall of the caisson, the top arc surface of the guide base plate is slidably inserted into the arc surface of the pipeline, and a laser transmitter is fixedly installed on one side surface of the installation plate.

Preferably, a hydraulic cylinder is fixedly installed on one side surface of the installation plate, and the two hydraulic cylinders are arranged symmetrically with respect to the axis of the pipeline, and a connecting plate is fixedly installed on the top of the guide bottom plate, and the connecting plate The top is fixedly installed with the arc surface bottom plate at one end of the hydraulic cylinder, and rubber pads are fixedly installed at the telescopic end of the hydraulic cylinder, and one side surface of the two rubber pads is in contact with one side of the pipeline.

Preferably, the auxiliary installation concentric mechanism includes a pressure chamber and a communication hole inside the installation ring, the inner walls of a plurality of the pressure chambers are fixedly communicated with both ends of the communication hole, and the pressure chambers One side of the inner wall is fixedly connected with a pressurized tube, the surface of the pressurized tube is provided with a valve, one end of the pressurized tube is fixedly connected with the oil outlet end of the oil pump, and one side of the mounting ring is fixedly installed with a laser receiver. device.

Preferably, positioning rods are slidably inserted into the inner top wall of the pressure chamber, and one end of a plurality of positioning rods is in contact with the inner wall of the pipeline, and the plurality of pressure chambers are in an annular array, the The bottom end of the positioning rod is respectively fixed with a spring and a gasket, the surface of the gasket is slidably inserted into the inner wall of the pressure chamber, and one end of the spring is fixedly installed with the inner bottom wall of the pressure chamber.

Preferably, the circumferential dynamic tilt detection mechanism includes an annular guide rail installed on one side of the installation ring and an annular bevel gear ring installed on the inner wall at one end of the installation ring, the inner walls of the annular guide rail are respectively slidably inserted with first The arc-shaped slider and the second arc-shaped slider, the three second arc-shaped sliders are arranged in three equal parts on the annular guide rail.

Preferably, a drive motor is fixedly installed on the top of the first arc-shaped slider, a gear shaft is fixedly installed on the output shaft of the drive motor through a coupling, and a bevel gear is fixedly installed on one end of the gear shaft. The tooth grooves of the bevel gear mesh with the inner wall of the annular bevel gear.

Preferably, both ends of the top of the first arc-shaped slider are fixedly installed with standing plates, and the top of the second arc-shaped slider is fixedly installed with support columns, and the tops of the three support columns and the two Ring plates are fixedly installed on the tops of the stand plates.

Preferably, a detection tube is fixedly installed on one side of the annular plate, and the four detection tubes are all quartered into an annular array on the surface of the annular plate, and a detection rod is slidably inserted into the inner wall of the detection tube, so that One end of the detection rod is in the shape of a hemisphere, and the hemispherical arc surfaces of the four detection rods are all in contact with the surface of one end of the mud-water balance pipe jacking machine. One end of the compression spring is fixedly installed with the inner wall of the detection tube, the other end of the compression spring is fixedly installed with the surface of the detection rod, the inner wall of the detection tube is fixed with a contact button, and the trigger end of the contact button contact with one end of the detection rod.

Preferably, the tilt correction driving mechanism includes a telescopic cylinder, and four telescopic cylinders are distributed on the surface of the annular plate in a quadrant ring array, and the installation surfaces of the four telescopic cylinders are all connected to the surface of the annular plate. One side surface is fixedly installed, and the telescopic ends of the four telescopic cylinders penetrate and extend to one side of the annular plate, and the telescopic ends of the telescopic cylinders are fixedly installed with rubber push plates.

Beneficial effects among the present invention are:

Through the auxiliary installation of the concentric mechanism, the circumferential dynamic tilt detection mechanism and the tilt correction drive mechanism set up during the drilling of the mud-water balance pipe jacking machine, the simultaneous detection operation of the mud-water balance pipe jacking machine using the laser transmitter and the detection rod is carried out. When the laser receiver does not receive light when the tilt occurs, it can control the circular dynamic tilt detection mechanism to perform circular motion to detect the tilt direction, so as to control the corresponding tilt correction drive mechanism to perform the deviation correction operation, thereby avoiding the deviation of the drilling angle and causing the drilling misalignment. In this way, the efficiency of construction is enhanced, and the cutter head can be monitored and corrected in real time, so as to ensure the axis, elevation and line shape of the pipeline to the greatest extent.

Description of drawings

Fig. 1 is the structural representation of a kind of construction method of pipe jacking in the open channel of passing through expressway;

Fig. 2 is a kind of perspective view of the jacking drive mechanism of the pipe jacking construction method of the open channel under the expressway;

Fig. 3 is a perspective view of the installation ring structure of a construction method for pipe jacking in an open channel under the expressway;

Fig. 4 is a kind of perspective view of the auxiliary installation concentric mechanism of the pipe jacking construction method of the open channel under the expressway;

Fig. 5 is an exploded view of a kind of pipe jacking construction method of the open channel under the expressway;

Fig. 6 is an enlarged view of the structure at A in Fig. 3 of a method of pipe jacking for an open channel under the expressway;

Fig. 7 is an enlarged view of the structure at C in Fig. 5 of a method of pipe jacking for an open channel under the expressway;

Fig. 8 is an enlarged view of the structure at B in Fig. 5 of a method of pipe jacking for an open channel under the expressway;

Fig. 9 is a perspective view of a circumferential dynamic tilt detection mechanism of a pipe jacking construction method for an open channel under an expressway.

In the figure: 1, mud-water balance pipe jacking machine; 2, installation ring; 3, jacking drive mechanism; 31, installation plate; 32, guide base plate; 33, laser transmitter; 34, hydraulic cylinder; 35, connecting plate; 36 , rubber pad; 4, auxiliary installation concentric mechanism; 41, pressure chamber; 42, communication hole; 43, pressurized pipe; 44, valve; 45, laser receiver; 46, positioning rod; 47, spring; 48, gasket ;5, circular dynamic tilt detection mechanism; 51, annular guide rail; 52, annular bevel gear ring; 53, first arc-shaped slider; 54, second arc-shaped slider; 55, drive motor; 56, gear shaft; 57 , bevel gear; 58, stand plate; 59, support column; 510, annular plate; 511, detection tube; 512, detection rod; 513, pressure spring; 514, contact button; ; 62, rubber push plate.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Referring to Fig. 1-Fig. 9, a construction method for pipe jacking in an open channel passing through an expressway, including: Step 1, fabrication of blade feet and caissons, including blade feet, shaft reinforcement, brackets, formwork and concrete, and bricks are used for reserved openings The brick wall with Mu20 bricks and M10 cement slurry is temporarily blocked.

Step 2: The shaft body is excavated and subsides, and the caisson can begin to sink when the concrete strength of the caisson reaches 100% of the design strength.

Step 3. Repeat the steps of step 1 and step 2 until the caisson is lowered to the design position, and carry out the bottom sealing operation, including the bottom sealing of the caisson, the production of bottom plate reinforcement, the concrete pouring of the bottom plate and the concrete maintenance. The bottom layer of the bottom cover is backfilled with large stones, and the middle layer is used G35 reinforced concrete floor, the bottom layer is backfilled with C25 plain concrete.

Step 4. Pipeline drilling and jacking. The mud-water balance pipe jacking machine 1 is used for drilling operation. At the same time as the drilling operation, the deviation correction mechanism is used to perform real-time deviation correction operation, and the pipeline jacking and installation operation is performed at the same time until the drilling operation is complete. End of hole and end of pipe jacking installation.

The deviation correction mechanism includes an installation ring 2 installed close to the mud-water balance pipe jacking machine 1 and the interior of the opposite pipe, and a jacking drive mechanism 3. An auxiliary installation concentric mechanism 4 is arranged inside the installation ring 2, and a circular dynamic ring is installed on one side of the installation ring 2. Tilt detection mechanism 5 and tilt correction drive mechanism 6.

In order to realize the pipeline jacking and conveying operation for the jacking drive mechanism 3; the jacking drive mechanism 3 is installed inside the bottom end side of the caisson, the jacking drive mechanism 3 includes a mounting plate 31 and a guide base plate 32, and the mounting surface of the mounting plate 31 It is fixedly installed with the inner wall of the caisson, the bottom of the guide base plate 32 is fixedly installed with the inner bottom wall of the caisson, the top arc surface of the guide base plate 32 is slidingly inserted into the arc surface of the pipeline, and one side surface of the installation plate 31 is fixedly installed There is a laser emitter 33 .

Specifically, by setting the guide base plate 32 to facilitate the effect of automatic positioning center guidance during pipeline transportation, setting the laser emitter 33 is convenient to control the horizontal light emitted by the laser emitter 33 to irradiate to one side of the muddy water balance pipe jacking machine 1 to be received, and then Real-time monitoring of inclination is carried out. When the light is not received, it means that the inclination occurs, and the deviation can be corrected.

In order to carry out the operation of driving the pipeline, a hydraulic cylinder 34 is fixedly installed on one side surface of the mounting plate 31, and the two hydraulic cylinders 34 are all arranged symmetrically with the axis of the pipeline, and a connecting plate 35 is fixedly installed on the top of the guide base plate 32. The top of 35 is fixedly installed with an end arc surface bottom plate of hydraulic cylinder 34, and the telescoping end of hydraulic cylinder 34 is fixedly installed with rubber pad 36, and one side surface of two rubber pads 36 all contacts with one side of pipeline.

Specifically, during the conveying operation, the hydraulic cylinder 34 is used to carry out telescopic movement to drive the rubber pad 36 to be placed on the side of the pipe above the guide base plate 32, and then to perform an extension movement to drive the pipe to slide forward, thereby carrying out the conveying operation.

In order to assist the installation of the concentric mechanism 4 to realize the axis of the installation ring 2 and the axis of the pipeline are located at the same axis adjustment operation; the auxiliary installation of the concentric mechanism 4 includes a pressure chamber 41 and a communication hole 42 provided inside the installation ring 2, a plurality of pressure The inner wall of the cavity 41 is fixedly communicated with both ends of the communication hole 42, and the inner wall of one side of the pressure cavity 41 is fixedly communicated with a pressurized tube 43, and the surface of the pressurized tube 43 is provided with a valve 44, and one end of the pressurized tube 43 is connected to the oil pump. The oil outlet end is fixedly connected, and a laser receiver 45 is fixedly installed on one side surface of the installation ring 2 .

Specifically, when controlling the installation operation of the installation ring 2, the oil pump is used to control the internal hydraulic pressure to be transported outward, so that the hydraulic oil enters the inside of the pressure chamber 41 through the pressure pipe 43 when the valve 44 is opened, and pressurized Operation, and use the laser receiver 45 to receive the light emitted by the laser transmitter 33, and keep the concentric connection all the time. When tilting occurs, and the laser receiver 45 cannot receive the emitted light, it can pass through the circular dynamic tilt detection mechanism 5 Perform work to detect the effect of the site where the tilt occurs.

In order to drive the installation groove for the pressure inside the pressure chamber 41, the inner top wall of the pressure chamber 41 is slidably inserted with a positioning rod 46, and one end of a plurality of positioning rods 46 is in contact with the inner wall of the pipeline, and the plurality of pressure chambers 41 are in the shape of Ring array, spring 47 and gasket 48 are respectively fixedly installed at the bottom of positioning rod 46, the surface of gasket 48 is slidably inserted into the inner wall of pressure chamber 41, and one end of spring 47 is fixedly installed with the inner bottom wall of pressure chamber 41.

Specifically, when the pressure inside the pressure chamber 41 is increased, the internal positioning rods 46 are squeezed to extend outward, and at the same time, the gasket 48 is used for sealing operation. When the inner wall is used, it further controls the effect that the axis of the installation ring 2 and the axis of the pipe are on the same axis.

In order to realize the real-time detection of inclination operation in the drilling operation of the mud-water balance pipe jacking machine 1, the circumferential dynamic inclination detection mechanism 5 includes an annular guide rail 51 installed on one side of the installation ring 2 and a ring guide rail 51 installed on one end of the installation ring 2. The annular bevel gear ring 52 and the inner wall of the annular guide rail 51 are slidably inserted with a first arc-shaped slider 53 and a second arc-shaped slider 54 respectively, and the three second arc-shaped sliders 54 are all divided into three equal parts on the annular guide rail 51 Permutation distribution.

Specifically, when performing circular motion detection, a first arc-shaped slider 53 and a plurality of second arc-shaped sliders 54 are used to slide on the inner wall of the annular guide rail 51, and the circular motion auxiliary detection equipment is used to detect the circular motion picture. Effect.

For circular motion driving, a drive motor 55 is fixedly installed on the top of the first arc-shaped slider 53, and a gear shaft 56 is fixedly installed on the output shaft of the drive motor 55 through a coupling, and a bevel gear 57 is fixedly installed on one end of the gear shaft 56. The tooth grooves of the bevel gear 57 mesh with the inner wall of the annular bevel gear 52 .

Specifically, the driving motor 55 drives the gear shaft 56 to rotate, thereby controlling the rotation of the bevel gear 57 , and the bevel gear 57 performs circular motion on the surface of the annular bevel gear 52 under meshing conditions.

Both ends of the top of the first arc-shaped slider 53 are fixedly equipped with a stand plate 58, and the top of the second arc-shaped slide block 54 is fixedly equipped with a support column 59. An annular plate 510 is fixedly installed on the top.

Specifically, when the bevel gear 57 moves circularly on the surface of the annular bevel gear ring 52 , the annular plate 510 is driven to perform circular motion, and is supported and installed by the support column 59 and the stand plate 58 .

One side of the annular plate 510 is fixedly installed with a detection tube 511, and the four detection tubes 511 are all quartered into an annular array on the surface of the annular plate 510. The inner wall of the detection tube 511 is slidably inserted with a detection rod 512, and one end of the detection rod 512 is Hemispherical shape, the hemispherical arc surfaces of the four detection rods 512 are all in contact with the surface of one end of the mud-water balance pipe jacking machine 1, the circular arc surfaces of the detection rods 512 are movably sleeved with compression springs 513, and one end of the compression springs 513 is in contact with the detection tube The inner wall of 511 is fixedly installed, and the other end of stage clip 513 is fixedly installed with the surface of detection rod 512, and the inner wall of detection tube 511 is fixedly installed with contact button 514, and the trigger end of contact button 514 contacts with one end of detection rod 512.

Specifically, when performing ring detection, the detection tube 511 on the surface is driven to rotate when the ring plate 510 makes a circular motion, thereby controlling one end of a plurality of detection rods 512 to contact the opposite surface of the mud-water balance pipe jacking machine 1, so that they are squeezed into contact The button 514 performs real-time detection. When the drilling hole of the mud-water balance pipe jacking machine 1 tilts, the surface of one of the detection rods 512 will leave the opposite surface of the mud-water balance pipe jacking machine 1, and then under the condition of the compression spring 513, it will not be in place. The contact button 514 is left to detect the effect that the mud-water balance pipe jacking machine 1 is tilted at this time.

In order to tilt the deviation correction mechanism to realize the circumferential dynamic tilt detection mechanism 5 detects the tilt and perform the deviation correction adjustment operation; the tilt deviation correction drive mechanism 6 includes telescopic cylinders 61, and the four telescopic cylinders 61 are distributed in a quartered ring array on the surface of the annular plate 510, four The mounting surfaces of the telescopic cylinders 61 are all fixedly installed on one side of the annular plate 510, and the telescopic ends of the four telescopic cylinders 61 penetrate and extend to one side of the annular plate 510, and the telescopic ends of the telescopic cylinders 61 are fixedly installed with rubber push plates 62.

Specifically, when it is detected that the mud-water balance pipe jacking machine 1 is tilted, the telescopic cylinder 61 provided at the opposite end of the tilt detection rod 512 performs an extension movement, driving the rubber push plate 62 to move forward to squeeze the mud-water balance pipe jacking machine 1 Relative to the surface, the effect of adjusting the deflection operation is carried out.

Step 5: Exit the hole, check the operation of each link; and when the machine head exits the hole, the jacking operation should be cautious, steady, and advanced at a uniform speed. Immediately after the first section of the pipe exits the hole, start to inject thixotropic mud evenly; within 5m of the pipe section exiting the hole Inside, check and urge the construction personnel to gradually adjust the construction parameters of soil cutting, mud discharge, top speed, earth pressure, axis, and elevation to the normal state.

Through the auxiliary installation of the concentric mechanism 4, the circumferential dynamic tilt detection mechanism 5 and the tilt correction drive mechanism 6 set during the drilling of the mud-water balance pipe jacking machine 1, the laser transmitter 33 and detection are used in the drilling of the mud-water balance pipe jacking machine 1. The rod 512 detects the operation at the same time. When the laser receiver 45 does not receive the light when the tilt occurs, it can control the circular dynamic tilt detection mechanism 5 to perform circular motion to detect the tilt direction, thereby controlling the corresponding tilt correction drive mechanism 6 to perform the deviation correction operation, thereby avoiding drilling. The deviation of the hole angle leads to the misalignment of the drilling, which enhances the construction efficiency, and can monitor and correct the cutter head in real time in time to ensure the axis, elevation and line shape of the pipeline to the greatest extent.

Working principle: During construction, the jacking drive mechanism 3 is used to control the hydraulic cylinder 34 to work, so that the rubber pad 36 pushes the pipeline to move forward, and follows the mud-water balance pipe jacking machine 1 to assist in drilling. When the mud-water balance pipe jacking machine 1. When an inclination occurs in the borehole, the laser receiver 45 cannot receive light, and judge the inclination to control the work of the circular dynamic inclination detection mechanism 5.

When the circular dynamic tilt detection mechanism 5 is working, the drive motor 55 rotates to drive the gear shaft 56 to rotate, and then controls the rotation of the bevel gear 57. Under meshing, the bevel gear 57 is controlled to perform circular motion on the surface of the annular bevel ring 52, thereby controlling The ring plate 510 rotates, driving a plurality of detection rods 512 on the surface to perform circular motion, so that the hemispherical surface of the detection rods 512 slides on the surface of one end of the mud-water balance pipe jacking machine 1, because the drilling of the mud-water balance pipe jacking machine 1 tilts, and Cause the hemispherical surface of a detection rod 512 in the circular motion to leave the surface of the mud-water balance pipe jacking machine 1, so that it does not press the contact button 514, so that it can be judged that this position and the corresponding position are tilted, and the tilt correction drive mechanism 6 can be controlled to work Make corrections.

In the deviation correction, the telescopic cylinder 61 corresponding to the deviation correction position is used to extend the work to push the muddy water to balance the inclined surface of the pipe jacking machine 1, so that it can perform the deviation correction operation.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (10)

1. A construction method for a push pipe of an open channel of a underpass highway comprises the following steps: step one, manufacturing cutting edge feet and open caisson, wherein the cutting edge feet, well body steel bars, brackets, templates and concrete are included, and a reserved hole is temporarily plugged by adopting a brick wall formed by bricking Mu20 bricks and M10 cement paste;

step two, digging soil for sinking the well body, wherein sinking can be started when the strength of the open caisson concrete reaches 100% of the design strength;

step three, repeating the step one and the step two until the sinking well descends to the designed position, and performing bottom sealing operation, wherein the bottom sealing operation comprises the steps of sinking well bottom sealing, bottom plate reinforcement manufacturing, bottom plate concrete pouring and concrete curing, the bottom sealing layer adopts large stone backfill, the middle layer adopts a G35 reinforced concrete bottom plate, and the bottom layer adopts C25 concrete backfill;

step four, pipeline drilling jacking, namely adopting a mud-water balance pipe jacking machine (1) to perform drilling operation, performing real-time deviation correction operation through a deviation correction mechanism arranged at the same time of drilling operation, and performing pipeline jacking installation operation at the same time of drilling until the drilling is finished and the pipeline jacking installation is finished;

the correction mechanism comprises a mounting ring (2) and a jacking driving mechanism (3) which are arranged in a pipeline close to the mud-water balance push bench (1) and opposite to the mud-water balance push bench, an auxiliary concentric installation mechanism (4) is arranged in the mounting ring (2), and a circumference dynamic inclination detection mechanism (5) and an inclination correction driving mechanism (6) are respectively arranged on one side of the mounting ring (2);

the jacking driving mechanism (3) realizes pipeline jacking conveying operation;

the auxiliary concentric installation mechanism (4) realizes the adjustment operation that the axle center of the installation ring (2) and the axle center of the pipeline are positioned at the same axle center;

the circumference dynamic inclination detection mechanism (5) is used for detecting inclination operation in real time in drilling operation of the mud-water balance push bench (1);

the inclination deviation correcting mechanism realizes deviation correcting and adjusting operation after the circumference dynamic inclination detecting mechanism (5) detects inclination;

step five, going out of the tunnel, checking and operating all links; when the machine head is in a hole, the jacking operation is carefully and stably carried out at a constant speed, and thixotropic slurry is uniformly injected immediately after the first-section pipe is in the hole; and in the range of 5m of the pipe joint hole, checking and supervising constructors to gradually adjust the construction parameters of soil cutting, soil discharging, top speed, soil pressure, axial line and elevation to a normal state.

2. The underpass highway open channel jacking pipe construction method according to claim 1, wherein the underpass highway open channel jacking pipe construction method is characterized by comprising the following steps: the utility model discloses a well sinking device, including open caisson, top drive mechanism (3) are installed inside bottom one side of open caisson, top drive mechanism (3) are including mounting panel (31) and direction bottom plate (32), the mounting surface of mounting panel (31) and the inner wall fixed mounting of open caisson, the bottom of direction bottom plate (32) and the interior bottom wall fixed mounting of open caisson, the top circular arc surface of direction bottom plate (32) is pegged graft with the circular arc surface slip of pipeline, one side fixed surface of mounting panel (31) installs laser emitter (33).

3. The underpass highway open channel jacking pipe construction method according to claim 2, wherein the underpass highway open channel jacking pipe construction method is characterized by comprising the following steps: one side surface fixed mounting of mounting panel (31) has pneumatic cylinder (34), two pneumatic cylinder (34) all carry out the symmetry setting with the axle center of pipeline, the top fixed mounting of direction bottom plate (32) has connecting plate (35), the top of connecting plate (35) with one end circular arc surface bottom plate fixed mounting of pneumatic cylinder (34), the flexible end fixed mounting of pneumatic cylinder (34) has rubber pad (36), two one side surface of rubber pad (36) all contacts with one side of pipeline.

4. The underpass highway open channel jacking pipe construction method according to claim 2, wherein the underpass highway open channel jacking pipe construction method is characterized by comprising the following steps: the auxiliary installation concentric mechanism (4) is in including seting up inside pressure chamber (41) of collar (2) and intercommunicating pore (42), a plurality of the inner wall of pressure chamber (41) all with the both ends fixed intercommunication of intercommunicating pore (42), the fixed intercommunication in one side inner wall of pressure chamber (41) has pressurization pipe (43), the surface of pressurization pipe (43) is provided with valve (44), the one end of pressurization pipe (43) is fixed intercommunication with the delivery end of oil pump, one side fixed surface of collar (2) installs laser receiver (45).

5. The method for constructing the underpass expressway open channel jacking pipe according to claim 4, which is characterized by comprising the following steps: the inner top wall of the pressure cavity (41) is slidably inserted with a positioning rod (46), one ends of the positioning rods (46) are contacted with the inner wall of the pipeline, the pressure cavities (41) are annular arrays, springs (47) and sealing gaskets (48) are fixedly installed at the bottom ends of the positioning rods (46) respectively, the surfaces of the sealing gaskets (48) are slidably inserted with the inner wall of the pressure cavity (41), and one ends of the springs (47) are fixedly installed on the inner bottom wall of the pressure cavity (41).

6. The underpass highway open channel jacking pipe construction method according to claim 1, wherein the underpass highway open channel jacking pipe construction method is characterized by comprising the following steps: the circumference dynamic inclination detection mechanism (5) comprises an annular guide rail (51) arranged on one side of the mounting ring (2) and an annular umbrella gear ring (52) arranged on the inner wall of one end of the mounting ring (2), a first arc-shaped sliding block (53) and a second arc-shaped sliding block (54) are respectively and slidably inserted into the inner wall of the annular guide rail (51), and the three second arc-shaped sliding blocks (54) are distributed on the annular guide rail (51) in a trisection arrangement mode.

7. The method for constructing the underpass expressway open channel jacking pipe according to claim 6, wherein the method comprises the following steps: the top fixed mounting of first arc slider (53) has driving motor (55), the output shaft of driving motor (55) is through shaft coupling fixed mounting gear shaft (56), the one end fixed mounting of gear shaft (56) has bevel gear (57), the tooth's socket of bevel gear (57) with the inner wall meshing of annular bevel gear (52).

8. The method for constructing the underpass expressway open channel jacking pipe according to claim 6, wherein the method comprises the following steps: the two ends of the top of the first arc-shaped sliding block (53) are fixedly provided with standing plates (58), the tops of the second arc-shaped sliding blocks (54) are fixedly provided with supporting columns (59), and the tops of the three supporting columns (59) and the tops of the two standing plates (58) are fixedly provided with annular plates (510).

9. The method for constructing the underpass expressway open channel jacking pipe according to claim 8, which is characterized by comprising the following steps: one side fixed mounting of annular plate (510) has detection tube (511), four detection tube (511) are all in the surface quartering annular array of annular plate (510), the inner wall slip grafting of detection tube (511) has detection pole (512), the one end of detection pole (512) is hemisphere shape, four the hemisphere circular arc surface of detection pole (512) all contacts with the one end surface of muddy water balanced push bench (1), the circular arc surface activity of detection pole (512) cup joints pressure spring (513), the one end of pressure spring (513) with the inner wall fixed mounting of detection tube (511), the other end of pressure spring (513) with the fixed surface mounting of detection pole (512), the inner wall fixed mounting of detection tube (511) has contact button (514), the trigger end of contact button (514) with the one end of detection pole (512) contacts.

10. The method for constructing the underpass expressway open channel jacking pipe according to claim 8, which is characterized by comprising the following steps: the inclination deviation correcting driving mechanism (6) comprises telescopic air cylinders (61), four telescopic air cylinders (61) are distributed on the surface of the annular plate (510) in a four-equal-division annular array mode, the installation surfaces of the four telescopic air cylinders (61) are fixedly installed on one side surface of the annular plate (510), the telescopic ends of the four telescopic air cylinders (61) penetrate through and extend to one side of the annular plate (510), and rubber pushing plates (62) are fixedly installed at the telescopic ends of the telescopic air cylinders (61).

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