CN111457801A - Secondary breaking method for stone blocks - Google Patents
Secondary breaking method for stone blocks Download PDFInfo
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- CN111457801A CN111457801A CN202010290087.6A CN202010290087A CN111457801A CN 111457801 A CN111457801 A CN 111457801A CN 202010290087 A CN202010290087 A CN 202010290087A CN 111457801 A CN111457801 A CN 111457801A
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- 239000004575 stone Substances 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000035939 shock Effects 0.000 claims abstract description 47
- 238000005553 drilling Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000005484 gravity Effects 0.000 claims abstract description 15
- 238000005336 cracking Methods 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000004146 energy storage Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000002360 explosive Substances 0.000 abstract description 15
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 239000011435 rock Substances 0.000 description 7
- 230000000977 initiatory effect Effects 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 206010024796 Logorrhoea Diseases 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 241000581613 Alchemilla arvensis Species 0.000 description 1
- 208000010392 Bone Fractures Diseases 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/02—Particular applications of blasting techniques for demolition of tall structures, e.g. chimney stacks
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Disintegrating Or Milling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to a secondary cracking method of stone blocks, which aims to solve the problems of high danger and poor environmental protection when explosive is used for cracking the stone blocks at present. The secondary breaking method of the stone block comprises the following steps; s1, setting the positions and the number of the drill holes on the stone block, drilling the drill holes on the stone block, wherein the number of the drill holes is one, the drill holes are formed from the surface of the stone block to the gravity center direction of the stone block, and the distance from the bottom of each drill hole to the position exceeding the gravity center of the stone block in the extending direction of the drill holes is 40-60 cm; s2, installing an orifice device in each drill hole, and then filling the drill holes with water; s3, connecting the energy converter with the pulse power driving source; then placing an energy converter in the borehole; and S4, starting the pulse power driving source to discharge to the energy converter, and the shock wave generated by the energy converter breaks the stone block, namely, completes the secondary breaking of the stone block, wherein the intensity of the shock wave is 265-279 MPa.
Description
Technical Field
The invention belongs to the technical field of shock wave generating equipment, and particularly relates to a secondary cracking method for a stone block.
Background
In the development of mineral resources, rocks with large volumes are usually mined; in buildings dismantled in cities, cement blocks with large volume are also available, and the rock or cement blocks have large weight due to large volume and are not very beneficial to transportation, so that much inconvenience is brought to subsequent work, and secondary fracture is needed. At present, when larger stones (rock or cement blocks) are cracked secondarily at a later stage, the stones are usually cracked again by using initiating explosive and other initiating explosive. The explosive and other initiating explosive devices have great technical advantages in breaking stones, but the shock waves generated by the explosive have poor controllability and have the problems of high danger and poor environmental protection, so that the use of the explosive and other initiating explosive devices is more and more strictly controlled, and the efficiency of mining and demolishing the mineral resources is reduced.
Disclosure of Invention
The invention aims to provide a secondary cracking method of a stone block, which aims to solve the problems of high danger and poor environmental protection when explosive is used for cracking the stone block at present.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a secondary breaking method of stone blocks comprises the following steps;
s1, setting the positions and the number of the drill holes on the stone block, drilling the drill holes on the stone block, wherein the number of the drill holes is one, the drill holes are formed from the surface of the stone block to the gravity center direction of the stone block, and the distance from the bottom of each drill hole to the position exceeding the gravity center of the stone block in the extending direction of the drill holes is 40-60 cm;
s2, installing an orifice device in each drill hole, and then filling the drill holes with water;
s3, connecting the energy converter with the pulse power driving source; then placing an energy converter in the borehole;
and S4, starting the pulse power driving source to discharge to the energy converter, and the shock wave generated by the energy converter breaks the stone block, namely, completes the secondary breaking of the stone block, wherein the intensity of the shock wave is 265-279 MPa.
Preferably, the opening position of the drill hole on the surface of the stone block is a point with the shortest distance between the gravity center and the opening position.
Preferably, the shock wave output window of the energy converter is located at the centre of gravity of the rock mass.
Preferably, the step S4 further includes observing the size of the crack generated by the stone block after cracking, filling the drill hole with water if the width of the crack does not reach the set crack width, and starting the pulse power driving source to discharge again until the crack of the stone block reaches the set width, wherein the set crack width is larger than 10 nm.
Preferably, the pulsed power drive source electrical energy storage is greater than 100 kJ.
Preferably, the energy converter includes ground electrode, high voltage electrode, insulation support, shell and cable interface, the shell is cylindric structure, and its inside cavity, high voltage electrode pass through insulation support to be fixed at the shell tip, and the cable conductor of cable interface tip passes shell body, insulation support are connected with the high voltage electrode rear end, and ground electrode sets up and is connected with the shell along the length direction of shell, and ground electrode sets up with the high voltage electrode front end relatively.
Preferably, the ground electrode is connected with the high-voltage electrode through a metal wire, and one metal wire is replenished on one side of the ground electrode after the energy converter discharges.
Preferably, the orifice device comprises an expansion sleeve clamped at the orifice of the drill hole, the lower surface of an annular fixed plate at the upper end of the expansion sleeve is contacted with the edge of the drill hole, a tubular taper sleeve is sleeved in the expansion sleeve, a taper port at the lower end of the taper sleeve is clamped in an expansion sheet circumferentially arranged at the lower end of the expansion sleeve, the expansion sheet protrudes outwards and is in close contact with the wall of the drill hole, and the expansion sheet is elastically connected with the lower end of the expansion sleeve; the taper sleeve upper end left and right sides is equipped with the connecting plate, is equipped with the screw rod on the connecting plate, after the screw rod passed the screw hole on the connecting plate with butt board swing joint, butt board lower extreme with annular fixed plate upper surface contact is equipped with the check valve in the taper sleeve, the taper sleeve upper end be equipped with the connecting portion of energy converter adaptation are equipped with the sealing washer on the connecting portion.
The invention has the beneficial effects that:
1. according to the secondary breaking method for the stone block, provided by the invention, the stone block is broken through the low-strength shock waves for many times by drilling, the broken stone block cannot be thrown out due to the shock waves, and a dangerous area is hardly formed; the invention utilizes the fatigue effect principle to crack the stone, is safer and more environment-friendly, and solves the problems of high danger and poor environment-friendliness when the stone is cracked by shock waves generated by explosive explosion.
2. When the metal wire carries out the shock wave operation after being connected ground electrode and high voltage electrode, can improve energy converter's conversion efficiency, and then promoted the cracked effect of stone.
3. The method of the invention adopts the electro-hydraulic effect to generate shock waves, and can continuously work as long as the pulse power driving source is supplemented with electric energy, thereby improving the efficiency of stone breaking.
4. For same stone, the shorter the length of drilling, the shorter the cost of seting up drilling can be practiced thrift, consequently selects the position that the shortest distance point was seted up for the stone surface, can promote the efficiency of breaking the stone to the cost has been practiced thrift.
5. The shock wave output window is located the focus department of stone and can makes the stone produce the crack of equal scale in operation point both sides, and then can break the stone to the garrulous stone that the volume is similar, has avoided still having the great problem of some bulk after breaking the stone.
6. The secondary cracking method for the stone provided by the invention can crack cement blocks generated during the building demolition in cities, so that the building demolition efficiency is improved, and the problem that the stone is difficult to crack secondarily due to forbidden explosives in cities is solved.
7. The secondary cracking method of the stone block provided by the invention improves the environmental protection and safety of stone block cracking.
Drawings
FIG. 1 is a schematic view of secondary breaking of a block;
FIG. 2 is a schematic diagram of an energy converter;
FIG. 3 is a schematic view of the structure of an orifice device;
fig. 4 is a cross-sectional view of fig. 3.
The reference numbers are as follows:
1-ground electrode, 2-metal wire, 3-high voltage electrode, 4-insulating support, 5-shell, 6-cable interface, 7-stone, 8-orifice device, 9-drilling, 10-energy converter, 20-expansion sleeve, 21-annular fixing plate, 22-taper sleeve, 23-expansion sheet, 24-connecting plate, 25-screw rod, 26-abutting plate, 27-one-way valve and 28-sealing ring.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
a rock secondary breaking method comprises an energy converter 10 and an orifice device 8.
As shown in fig. 2, the energy converter 10 includes a ground electrode 1, a wire 2, a high voltage electrode 3, an insulating support 4, a housing 5, and a cable interface 6.
The shell 5 is a cylindrical structure, the interior of the shell is hollow, the high-voltage electrode 3 is fixed at the end part of the shell 5 through the insulating support 4, a cable at the end part of the cable connector 6 penetrates through the body of the shell 5 and the insulating support 4 and then is connected with the rear end of the high-voltage electrode 3, the ground electrode 1 is arranged along the length direction of the shell 5 and is connected with the shell 5, and the ground electrode 1 is arranged opposite to the front end of the high-voltage electrode 3. As shown in fig. 1, the ground electrode 1, the high voltage electrode 3, and the connection portion between the ground electrode 1 and the housing 5 are open tubular structures, and the exposed portion between the ground electrode 1 and the high voltage electrode 3 is the shock wave output window.
The ground electrode 1 and the high-voltage electrode 3 are connected through a metal wire 2. The metal wire 2 can be selectively used, and when the metal wire 2 is used for carrying out shock wave operation after the ground electrode 1 and the high-voltage electrode 3 are connected, the conversion efficiency of the energy converter 10 can be improved, and then the effect of breaking the stone block 7 is improved.
As shown in fig. 3 and 4, the orifice device 8 includes an expansion sleeve 20 which is clamped in the orifice of the drill hole 9, the lower surface of an annular fixing plate 21 at the upper end of the expansion sleeve 20 is in contact with the edge of the drill hole 9, a tubular taper sleeve 22 is sleeved in the expansion sleeve 20, a taper port at the lower end of the taper sleeve 22 is clamped in an expansion sheet 23 which is circumferentially arranged at the lower end of the expansion sleeve 20, the expansion sheet 23 protrudes outwards and is in close contact with the hole wall of the drill hole 9, the orifice device 8 is fixed with the drill hole 9, the expansion sheet 23 is elastically connected with the lower end of the expansion sleeve 20, the elastic connection facilitates automatic recovery of the expansion sheet 23 to the original position, and the expansion sheet 23 can protrude outwards again to fix the.
Connecting plates 24 are arranged on the left side and the right side of the upper end of the taper sleeve 22, screw rods 25 are arranged on the connecting plates 24, the screw rods 25 penetrate through threaded holes in the connecting plates 24 and are movably connected with abutting plates 26, the lower end of the abutting plates 26 is in surface contact with the upper surface of the annular fixing plate 21, the taper sleeve 22 can be moved upwards when the screw rods 25 are rotated to move downwards, then a taper port at the lower end of the taper sleeve 22 can be clamped at the lower end of the expansion sleeve 20, therefore, the expansion sheet 23 protrudes outwards and is in close contact with the hole wall of the drilled hole 9, the taper port at the lower end of the taper sleeve 22 can be separated from the expansion sheet 23 when the taper sleeve 22 moves downwards.
Be equipped with check valve 27 in the taper sleeve 22, check valve 27 can avoid a large amount of water to flow out from drilling 9 when the water injection finishes, taper sleeve 22 upper end be equipped with the connecting portion of energy converter 10 adaptation are equipped with sealing washer 28 on the connecting portion, and when drilling 9 was put into to energy converter 10 front end, energy converter 10 rear end was connected fixedly through above-mentioned connecting portion, and sealing washer 28 can be sealed the junction and then avoid drilling 9 normal water to flow out.
The working principle of the invention is that a pulse power driving source is adopted to discharge the metal wire 2 arranged between the ground electrode 1 and the high-voltage electrode 3, and the discharge current causes the metal wire 2 to explode electrically to form a plasma arc channel (when the metal wire 2 is not adopted, the pulse power driving source directly discharges water between the ground electrode 1 and the high-voltage electrode 3, and high-voltage pulses generated after discharge can puncture a water gap to form the plasma arc channel); the generated plasma arc directly heats water under subsequent strong discharge current, rapidly heats, gasifies and expands surrounding water media, further pushes the surrounding water to generate spherical wave shock waves, and the spherical wave shock waves can crack the stone block 7. The intensity of the shock wave can be controlled according to the energy storage and output voltage of the pulse power driving source.
The invention provides a secondary breaking method for stone blocks, which is shown in figure 1 and specifically comprises the following steps;
s1, setting the operation scheme of the stone block 7 according to the mechanical property of the stone block 7 and the effective distance of the shock wave for breaking the stone block 7; the operating scheme includes the position and number of the boreholes 9, and the intensity and number of times each borehole 9 is subjected to a shock wave.
Before the operation scheme is set, the drill holes 9 in the stone block 7 are subjected to shock wave tests with different strengths, after the shock wave tests are completed, the presplitting stone block 7 is inspected by using an endoscope or a three-dimensional seismic exploration method, so that the crack size and range, the shock wave implementation strength and the shock wave implementation frequency suitable for the stone block 7 can be obtained.
The number of the above-mentioned drill holes 9 is one, the drill holes 9 are opened from the surface of the block 7 toward the center of gravity of the block 7, and the distance L in the extending direction of the drill holes 9 beyond the center of gravity of the block 7 is 50 cm., preferably the diameter of the drill holes 11 is 113 and 153 mm.
The drilling hole 9 is the point of shortest distance between the center of gravity and the opening position at the opening position on the surface of the stone block 7. The centre of gravity with set up the position and can decide the length of drilling 9, consequently to same stone 7, the shorter the length of drilling 9 can practice thrift the cost of setting up drilling 9, consequently selects the position that the shortest distance point was set up for stone 7 surface, can promote the efficiency of breaking stone 7, and practiced thrift the cost.
The rock 7 is cracked by drilling 9 through a number of low-intensity shock waves, preferably with an intensity of 265-279MPa and a pulse width of 40 microseconds. Multiple fracturing of the block 7 is performed by drilling 11, thereby breaking the block 7. This way the stone block 7 is cracked by using the fatigue effect, the cracked stone block 7 is not thrown out by the shock wave, there is almost no danger zone, so that the stone block 7 can be cracked in a safer way.
The rock block 7 is drilled with the above-described working method 9.
And S2, installing the orifice device 8 at the orifice of the drill hole 9, wherein the orifice device 8 is used for fixing the energy converter 10 and closing the orifice, and the drill hole 9 is filled with water after the orifice device 8 is installed.
And S3, connecting the energy converter 10 with a pulse power driving source through a coaxial cable, wherein the pulse power driving source is arranged in a sealed shell in a self-integration manner, the electric energy storage of the pulse power driving source is more than 100kJ, and pure electric energy high voltage is output through the coaxial cable and is discharged through the energy converter 10 to generate shock waves.
The energy converter 10 is placed in the above-mentioned borehole 9 by means of a drilling machine such that the shock wave output window of the energy converter 10 is located at the center of gravity of the stone block 7 and the ground electrode 1, the high voltage electrode 3 of the energy converter 10 are brought into full contact with the water in the borehole 9 to generate a plasma arc, and the generated plasma arc reacts with the water to form a shock wave which is output from the shock wave output window.
Shock wave output window is located the focus department of stone 7 and can makes stone 7 produce the crack of equal scale in operation point both sides, and then can break stone 7 to the similar garrulous stone of volume, has avoided still having the great problem of some volume after breaking stone 7.
S4, the pulse power driving source is started to charge the energy storage capacitor, when the electric energy of the energy storage capacitor reaches the working threshold of the control switch, the pulse power driving source discharges to the energy converter 10, and the shock wave generated by the energy converter 10 breaks the stone block 7;
and observing cracks formed on the stone block 7 after the cracking is carried out, filling water into the drill hole 9 if the maximum width of the crack does not reach 10nm (the set crack width is more than 10nm), and starting the pulse power driving source to discharge again until the cracks on the stone block 7 reach the set width. In practice, after about 10 times of low-intensity shock wave operations through the drill holes 9, the stone block 7 is broken, i.e. the secondary breaking of the stone block 7 is completed.
The pulse power drive source can generate a shock wave again by repeating charging and discharging; after the pulse power driving source discharges by using the metal wire 2, the metal wire 2 is scrapped after electric explosion, and when the discharge is performed again, one metal wire 2 needs to be replenished on one side of the ground electrode 1 of the energy converter 10.
According to the secondary breaking method for the stone block, provided by the invention, the stone block is broken through the low-strength shock waves for many times by drilling, the broken stone block cannot be thrown out due to the shock waves, and a dangerous area is hardly formed; the invention utilizes the fatigue effect principle to crack the stone, is safer and more environment-friendly, and solves the problems of high danger and poor environment-friendliness when the stone is cracked by shock waves generated by explosive explosion.
When the metal wire carries out the shock wave operation after being connected ground electrode and high voltage electrode, can improve energy converter's conversion efficiency, and then promoted the cracked effect of stone.
The method of the invention adopts the electro-hydraulic effect to generate shock waves, and can continuously work as long as the pulse power driving source is supplemented with electric energy, thereby improving the efficiency of stone breaking.
Drilling sets up the position on stone surface and is the focus and sets up the shortest distance point of position, and the focus can decide the length of drilling with setting up the position, consequently to same stone, the length of drilling can practice thrift the cost of seting up drilling more short more, consequently selects the position that shortest distance point was seted up for the stone surface, can promote the efficiency of the stone that breaks to the cost has been practiced thrift.
The shock wave output window is located the focus department of stone and can makes the stone produce the crack of equal scale in operation point both sides, and then can break the stone to the garrulous stone that the volume is similar, has avoided still having the great problem of some bulk after breaking the stone.
The secondary cracking method for the stone provided by the invention can crack cement blocks generated during the building demolition in cities, thereby improving the efficiency of demolition of the buildings and solving the problem that the stone is difficult to crack secondarily caused by forbidden explosives in cities.
The invention provides a secondary cracking method of stone blocks, which utilizes a pulse power driving source to carry out shock wave operation on the stone blocks through an energy converter, the pulse power driving source directly discharges water between a ground electrode and a high-voltage electrode, generated plasma electric arcs directly heat the water under subsequent strong discharge current, and surrounding water media are rapidly heated, gasified and expanded, so that the surrounding water is pushed to generate spherical waves, and the spherical wave shock waves can crack the stone blocks; the pulse power driving source can finely control the intensity of the output shock wave according to the stored energy and the output voltage, so that workers can conveniently control the intensity and the opportunity of the shock wave generated by the pulse power driving source, the safety in the cracking process is improved, the life safety of production personnel is guaranteed, and the safety problem caused by the fact that blasting by using initiating explosive devices is not easy to control is avoided; meanwhile, the pulse power driving source can avoid the problem that toxic gas (such as nitrogen oxide and carbon monoxide) is generated when the initiating explosive device is exploded, so that the environmental protection property of stone breakage is improved.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A secondary breaking method of stone blocks is characterized in that: comprises the following steps;
s1, setting the positions and the number of the drill holes (9) in the stone block (7), drilling the drill holes (9) in the stone block (7), wherein the number of the drill holes (9) is one, the drill holes (9) are formed from the surface of the stone block (7) to the gravity center direction of the stone block (7), and the distance from the bottom of the drill holes (9) to exceed the gravity center of the stone block (7) in the extending direction of the drill holes (9) is 40-60 cm;
s2, installing an orifice device (8) in each drill hole (9), and then filling the drill holes (9) with water;
s3, connecting the energy converter (10) with the pulse power driving source; then placing an energy converter (10) in the borehole (9);
and S4, starting the pulse power driving source to discharge to the energy converter (10), and the shock wave generated by the energy converter (10) breaks the stone block (7), namely completing the secondary breaking of the stone block (7), wherein the intensity of the shock wave is 265-279 MPa.
2. A secondary breaking method of stone blocks, as claimed in claim 1, characterized in that: the drilling hole (9) is a point with the shortest distance between the gravity center and the opening position at the opening position on the surface of the stone block (7).
3. A secondary breaking method of stone blocks, as claimed in claim 2, characterized in that: the shock wave output window of the energy converter (10) is located at the center of gravity of the stone block (7).
4. A secondary breaking method of stone blocks, as claimed in claim 1, characterized in that: and step S4, observing the size of the crack generated by the stone block (7) after cracking, filling water into the drill hole (9) if the width of the crack does not reach the set crack width, and starting the pulse power driving source to discharge again until the crack of the stone block (7) reaches the set width, wherein the set crack width is more than 10 nm.
5. A secondary breaking method of stone blocks, as claimed in claim 1, characterized in that: the pulse power driving source has an electric energy storage larger than 100 kJ.
6. A secondary breaking method of stone blocks, as claimed in claim 3, characterized in that: energy converter (10) include ground electrode (1), high voltage electrode (3), insulation support (4), shell (5) and cable interface (6), shell (5) are cylindric structure, and its inside cavity, high voltage electrode (3) are fixed at shell (5) tip through insulation support (4), and the cable conductor of cable interface (6) tip passes shell (5) body, insulation support (4) are connected with high voltage electrode (3) rear end, and ground electrode (1) sets up and is connected with shell (5) along the length direction of shell (5), and ground electrode (1) and high voltage electrode (3) front end set up relatively.
7. A secondary breaking method of stone blocks, as claimed in claim 6, characterized in that: the ground electrode (1) is connected with the high-voltage electrode (3) through the metal wire (2), and after the energy converter (10) discharges, one metal wire (2) is replenished on one side of the ground electrode (1).
8. A secondary breaking method of stone blocks, as claimed in claim 1, characterized in that: the orifice device (12) comprises an expansion sleeve (20) clamped at the orifice of the drill hole (9), the lower surface of an annular fixing plate (21) at the upper end of the expansion sleeve (20) is in contact with the edge of the drill hole (9), a tubular taper sleeve (22) is sleeved in the expansion sleeve (20), a taper port at the lower end of the taper sleeve (22) is clamped in an expansion sheet (23) circumferentially arranged at the lower end of the expansion sleeve (20), the expansion sheet (23) protrudes outwards and is in tight contact with the hole wall of the drill hole (9), and the expansion sheet (23) is in elastic connection with the lower end of the expansion sleeve (20); taper sleeve (22) upper end left and right sides is equipped with connecting plate (24), is equipped with screw rod (25) on connecting plate (24), screw rod (25) pass behind the screw hole on connecting plate (24) with butt plate (26) swing joint, butt plate (26) lower extreme with surface contact on annular fixed plate (21), be equipped with check valve (27) in taper sleeve (22), taper sleeve (22) upper end be equipped with the connecting portion of energy converter (10) adaptation are equipped with sealing washer (28) on the connecting portion.
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| CN202010290087.6A CN111457801A (en) | 2020-04-14 | 2020-04-14 | Secondary breaking method for stone blocks |
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| CN202010290087.6A CN111457801A (en) | 2020-04-14 | 2020-04-14 | Secondary breaking method for stone blocks |
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| CN104594901A (en) * | 2014-12-08 | 2015-05-06 | 太原理工大学 | Method for enabling working face to pass through igneous rock intrusion area |
| CN105674818A (en) * | 2016-02-03 | 2016-06-15 | 西安贯通能源科技有限公司 | Method driving energetic electrode to release energy and produce shock waves by high-voltage discharge |
| CN206190285U (en) * | 2016-11-24 | 2017-05-24 | 曾庆平 | Hole packer for carbon dioxide blast tube |
| CN108267053A (en) * | 2018-03-28 | 2018-07-10 | 中国地质大学（北京） | A kind of mechanical device that plasma shot rock is generated using electrohydraulic effect |
| CN108871130A (en) * | 2018-06-29 | 2018-11-23 | 中国地质大学（北京） | A kind of plasma shot rock mechanical device of achievable hole wall sealing |
| CN109538209A (en) * | 2018-09-11 | 2019-03-29 | 中国矿业大学 | A kind of reduction coal seam tight roof method based on electroporation |
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Application publication date: 20200728 |