CN112963146A - Joint-cutting carbon dioxide fracturing device and rock mass directional blasting method - Google Patents
Joint-cutting carbon dioxide fracturing device and rock mass directional blasting method Download PDFInfo
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- CN112963146A CN112963146A CN202110169816.7A CN202110169816A CN112963146A CN 112963146 A CN112963146 A CN 112963146A CN 202110169816 A CN202110169816 A CN 202110169816A CN 112963146 A CN112963146 A CN 112963146A
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- boss
- main pipe
- carbon dioxide
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 65
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 65
- 238000005422 blasting Methods 0.000 title claims abstract description 39
- 239000011435 rock Substances 0.000 title claims abstract description 38
- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 239000011148 porous material Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000003245 coal Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 description 5
- 239000002360 explosive Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MPCRDALPQLDDFX-UHFFFAOYSA-L Magnesium perchlorate Chemical compound [Mg+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MPCRDALPQLDDFX-UHFFFAOYSA-L 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- YRNNKGFMTBWUGL-UHFFFAOYSA-L copper(ii) perchlorate Chemical compound [Cu+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O YRNNKGFMTBWUGL-UHFFFAOYSA-L 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- WABPQHHGFIMREM-YPZZEJLDSA-N lead-205 Chemical compound [205Pb] WABPQHHGFIMREM-YPZZEJLDSA-N 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- -1 tunneling Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The embodiment of the invention provides a joint-cutting carbon dioxide fracturing device and a rock mass directional blasting method, and relates to the field of mine engineering blasting. The method comprises the following steps: the heating device comprises a main pipe, a heating rod, a filling head and an adapter; the charging head is connected to the first end of the main pipe, the adapter is connected to the second end of the main pipe, and a first binding post is arranged on the adapter; a filling channel is arranged on the filling head, and a needle valve is arranged in the filling channel; the heating rod comprises a base and a paper tube arranged on the base, a pore passage is reserved on the base, a second binding post is arranged in the pore passage and extends into the paper tube, a threading hole is formed in one end, far away from the base, of the paper tube, a conducting wire axially arranged in the paper tube is arranged on the second binding post, and the conducting wire is led out of the threading hole and connected to the second binding post of the adapter; the inner wall of the main pipe is axially provided with a strip-shaped energy release sheet for directionally releasing energy, and the side wall of the main pipe and the strip-shaped energy release sheet are correspondingly provided with a cutting seam. The directional blasting of the rock mass is convenient to realize, thereby improving the blasting effect.
Description
Technical Field
The invention relates to the field of mine engineering blasting, in particular to a joint cutting carbon dioxide fracturing device and a rock mass directional blasting method.
Background
The carbon dioxide fracturing device is a novel blasting device, is mainly used for breaking rocks, tunneling, coal dropping, dredging pipelines and the like, and has the principle that high-pressure high-energy gas is quickly released by gasifying and expanding liquid carbon dioxide, the volume can be expanded by more than 600 times, the release time is only 20-40 ms, and then the blasting effect is achieved.
At present, the rock directional fracture blasting technology is generally realized by means of blast hole grooving, kerf pipe cartridge cutting and the like. Wherein, the big gun hole grooving operation degree of difficulty is big, and is higher to the accuse of lancing direction, is difficult for realizing, and the lancing cartridge bag can be fine solution this type of problem, but domestic management and control to the explosive is stricter, and it is comparatively difficult that some areas acquire the explosive, and to dark big gun hole simultaneously, the lancing cartridge bag is complicated when sending the hole, has certain technical difficulty, and the use of lancing cartridge bag is all being restricted to these problems. In addition, conventional carbon dioxide frackers are not suitable for use with directional fracturing techniques.
Disclosure of Invention
In view of this, the embodiment of the invention provides a joint-cutting carbon dioxide fracturing device and a rock mass directional blasting method, which are convenient for realizing directional fracture blasting of a rock mass, thereby improving the blasting effect.
In a first aspect, an embodiment of the present invention provides a lancing carbon dioxide fracturing device, including: the heating device comprises a main pipe, a heating rod, a filling head and an adapter; the charging head is connected to the first end of the main pipe, the adapter is connected to the second end of the main pipe, and a first binding post is arranged on the adapter;
a filling channel for filling carbon dioxide into the main pipe is arranged on the filling head, and a needle valve for opening and closing the filling channel is arranged in the filling channel;
the heating rod comprises a base and a paper tube arranged on the base, the paper tube is arranged in the cavity of the main pipe, a mounting hole is formed in the filling head and parallel to the filling channel, the base of the heating rod is screwed in the mounting hole of the filling head, the tail of the base is pressed against the end face of the filling head, a hole passage is reserved in the base, a second wiring terminal is arranged in the hole passage and extends into the paper tube, a threading hole is formed in one end, far away from the base, of the paper tube, a lead is arranged at one end, located in the paper tube, of the second wiring terminal, and the lead is axially arranged in the paper tube and is led out from the threading hole to be connected to the second wiring terminal of the adapter;
the inner wall of the main pipe is axially provided with a strip-shaped energy release sheet for directionally releasing energy, and the side wall of the main pipe and the strip-shaped energy release sheet are correspondingly provided with a cutting seam.
Optionally, a strip-shaped sealing gasket is arranged between the strip-shaped energy release sheet and the inner wall of the main pipe and at least corresponding to the position of the cutting seam.
Optionally, the center of the slit is located on the main pipe middle section, and the two ends of the slit are symmetrically arranged about the main pipe middle section.
Optionally, the slit is disposed radially through a sidewall of the main tube.
Optionally, a sealing gasket is arranged at the contact position of the tail part of the base of the heating rod and the end face of the filling head.
Optionally, the filling head includes an end cap, a boss is provided on a first surface of the end cap, the filling channel is axially arranged in parallel with the mounting hole, the filling channel is of a stepped hole structure and includes a first stepped hole and a second stepped hole, the first stepped hole and the second stepped hole are coaxially arranged, the first stepped hole is arranged through the first surface and the second surface of the end cap, and the second surface is opposite to the first surface;
the second step hole axially penetrates through the boss to be connected with the first step hole, the aperture of the second step hole is larger than that of the first step hole, an injection port penetrating through the side face of the boss is formed in the side wall of the second step hole, and a first thread is formed in the inner wall of the second step hole between the orifice of the second step hole and the injection port;
the mounting hole penetrates through the boss and the end cover, and second threads are arranged on the inner wall of the mounting hole between the hole opening of the mounting hole and the first surface of the end cover.
Optionally, the first end of the head that fills passes through the second surface welding of end cover in the first end of being responsible for, the first end of adapter weld in the second end of being responsible for, the second end of the head that fills is equipped with the external screw thread, the adapter is for having open-ended cylindric structure, the first end center of adapter is equipped with first terminal, the second end of adapter is equipped with the internal thread.
Optionally, the base includes an end plate, a first boss and a second boss, the end plate is in a shape of an inverted round-head rectangle, the first boss is stacked on the first surface of the end plate, the second boss is stacked on the upper surface of the first boss, and the end plate, the first boss and the second boss are coaxially disposed;
the first boss and the second boss are of cylindrical structures, third threads are arranged on the outer circumferential surface of the second boss, the distance from the center to the edge of the end plate is greater than the radius of the bottom surface of the first boss, and the radius of the bottom surface of the first boss is greater than the radius of the bottom surface of the second boss;
the pore passes through the base setting, including first order pore and second order pore, first order pore certainly in second boss upper surface extends to the second boss, the second order pore with first order pore end links to each other, and runs through to the end plate second surface, first order pore and the coaxial setting of second order pore, second order pore aperture is greater than first order pore aperture.
Optionally, the main pipe is a pipe body made of special steel.
In a second aspect, the invention provides a rock mass directional blasting method, which is implemented based on any one of the slitting carbon dioxide fracturing devices in the first aspect, and the method comprises the following steps:
opening a needle valve on the filling channel, opening the filling channel, and filling carbon dioxide liquid into the main pipe through the filling channel to fill the hollow cavity formed by the paper pipe and the main pipe;
inserting the lancing carbon dioxide fracturing device into the blast hole at a preset depth;
connecting the second binding post with an electric excitation ignition device, and igniting and exciting to start a crack initiator;
the conducting wire in the heating paper tube is ignited to release a large amount of heat energy to instantly gasify the liquid carbon dioxide in the main tube, and the pressure in the main tube is increased;
when the pressure reaches the limit of the shear strength of the strip-shaped energy release sheet arranged on the inner wall of the main pipe, the strip-shaped energy release sheet is sheared and damaged, high-energy and high-pressure carbon dioxide gas is released along the cutting seam to form linear cutting airflow, and the coal rock mass is cut in a preset direction to form a directional cutting seam.
According to the joint-cutting carbon dioxide fracturing device and the rock mass directional blasting method provided by the embodiment of the invention, the structure of the fracturing device is improved, the inner wall of the main pipe is axially provided with a strip-shaped energy release sheet for directionally releasing energy, and the side wall of the main pipe and the strip-shaped energy release sheet are correspondingly provided with a joint cutting. The high-pressure gas energy can be released from two sides along the axial direction of the carbon dioxide cracking device pipe body, the coal rock body is directionally fractured and is installed in blast holes such as a rock roadway and a shaft, the directional fracture blasting of the rock body is convenient to realize, and then the unnecessary damage of surrounding rocks is reduced, so that the blasting effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a lancing carbon dioxide fracturing device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a lancing carbon dioxide fracker in accordance with one embodiment of the present invention;
FIG. 3 is a left side view of the main tube of FIG. 1 or FIG. 2;
FIG. 4 is a cross-sectional view of one embodiment of the filler head of FIG. 1 or FIG. 2;
FIG. 5 is a cross-sectional view of an embodiment of a heating rod;
FIG. 6 is a schematic view of the form and structure of a lancing carbon dioxide fracturing device according to an embodiment of the present invention;
FIG. 7 is a schematic view of the form and structure of a lancing carbon dioxide fracker according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of an embodiment of the base in fig. 5.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be apparent that numerous technical details are set forth in the following specific examples in order to provide a more thorough description of the present invention, and it should be apparent to one skilled in the art that the present invention may be practiced without some of these details. In addition, some methods, means, components and applications thereof known to those skilled in the art are not described in detail in order to highlight the gist of the present invention, but the implementation of the present invention is not affected thereby. The embodiments described herein are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the lancing carbon dioxide fracturing device provided by the embodiment of the invention has a simple structure, is suitable for rock blasting in mine engineering, and is particularly suitable for directional pre-splitting blasting occasions with the requirement of controlling rock blasting forming.
Referring to fig. 1 and 2, the device comprises: a main pipe 100, a heating rod 200, a filling head 300 and an adapter 400; the first end at being responsible for 100 is connected to the head 300 that fills, adapter 400 is connected at the second end of being responsible for 100 be equipped with first terminal 401 on adapter 400.
A filling passage 310 for filling carbon dioxide into the main pipe 100 is provided on the filling head 300, and a needle valve 302 for opening and closing the filling passage 310 is provided in the filling passage 310; among them, the Needle valve 302(Needle valve) is a fine adjustment valve, and its valve plug is Needle-shaped, mainly used for adjusting flow, and the Needle-shaped valve plug is generally made of a long Needle made of quenched steel, and the valve seat is made of soft material such as tin, copper, etc. The sealing between the valve needle and the valve seat is achieved by the close fit of the conical surfaces of the valve needle and the valve seat. The taper of the valve needle has two taper angles of 1: 50 and 60 degrees, and in the embodiment, the taper of the valve needle is 60 degrees.
Referring to fig. 5, the heating rod 200 includes a base 210 and a paper tube 220 disposed on the base 210, the paper tube 220 is disposed in the cavity of the main tube 100, a cavity 150 is formed between an outer wall of the paper tube 220 and an inner wall of the main tube 100, and the cavity 150 is used for filling carbon dioxide; on the head 300 of filling, with fill in the parallel mounting hole 303 that still is equipped with of passageway 310, the base 210 of heating rod 200 closes soon in the mounting hole 303 of head 300 of filling, just the base 210 afterbody press against in on the head 300 terminal surface of filling, reserve on the base 210 and have pore 203 be equipped with second terminal 204 in the pore 203, second terminal 204 extends in the paper tube 220, paper tube 220 keeps away from the one end of base 210 is equipped with the through wires hole (not explicitly shown in the figure, and this characteristic is hidden to the mode of wearing to establish by the wire of fig. 2) second terminal 204, be located one of paper tube 220 and serve and be used for the wire 205 of ignition, wire 205 axial lay in the paper tube 220, and follow draw in the through wires hole on the second terminal 204 of adapter 400. In some embodiments, a sealing gasket 220 is further disposed between the tail portion of the base 210 and the end surface of the filling head 300.
The inner wall of the main pipe 100 is axially provided with a strip-shaped energy release sheet 110 for directionally releasing energy, and the side wall of the main pipe is also provided with a cutting seam 150 corresponding to the strip-shaped energy release sheet 110; thus, after the electric ignition head 500 in the heating rod 200 ignites the heating agent, the gasification pressure of the carbon dioxide in the main pipe 100 rises, when the pressure reaches the limit of the shear strength of the strip-shaped energy release sheet 110, the strip-shaped energy release sheet 110 is sheared and damaged, the high-energy and high-pressure carbon dioxide gas is released along the cutting seam 150, a linear cutting gas flow is formed, the rock mass is directionally cut, and the directional rock mass pre-splitting blasting is realized.
Referring to fig. 7, it can be understood that in order to accommodate deep blastholes (also called blastholes), longer frackers are required, and when one fracker is shorter, a plurality of frackers can be conveniently connected into a whole of a suitable length by the adapter 400 to accommodate blastholes of different depths.
Further, a second binding post 204 is arranged on the adapter 400 and is used for connecting a lead 205 of a previous fracturing device; thus, an igniter is connected to the first terminal 401, so that each abutting cracker can be conveniently ignited and activated.
In addition, some traditional carbon dioxide fracturing devices are in a point blasting mode, namely energy is released in a point mode, the influence range of blasting is limited, directional breaking of engineering rock masses can not be achieved according to the preset direction under most working conditions, rock masses in the area near the blasting point can be broken sometimes, and the blasting effect is influenced due to the fact that rock masses in other areas are not broken.
According to the joint-cutting carbon dioxide fracturing device and the rock mass directional blasting method provided by the embodiment of the invention, the structure of the fracturing device is improved, the inner wall of the main pipe is axially provided with the strip-shaped energy release sheet for directionally releasing energy, and the side wall of the main pipe and the strip-shaped energy release sheet are also provided with the joint cutting correspondingly. The high-pressure gas energy can be released from two sides along the axial direction of the carbon dioxide cracking device pipe body, the coal rock body is directionally fractured and is installed in blast holes such as a rock roadway and a shaft, the directional fracture blasting of the rock body is convenient to realize, and then the unnecessary damage of surrounding rocks is reduced, so that the blasting effect is improved.
As shown in fig. 2, a strip-shaped sealing gasket 120 is disposed between the strip-shaped energy release sheet 110 and the inner wall of the main pipe at least at a position corresponding to the cutting slit, so as to ensure sealing at the cutting slit 150. The strip-shaped sealing gasket and the strip-shaped energy release sheet are fixed on the side wall of the main pipe by using screws 130. The slit 150 may have a long shape to conform to the overall contour of the strip-shaped energy release sheet 110 and the strip-shaped gasket 120.
In some embodiments, as shown in fig. 6, the center of the slit is located on the main pipe middle section, and the two ends of the slit are symmetrically arranged about the main pipe middle section.
Specifically, the slits 150 are radially disposed through the sidewall of the main pipe; as shown in fig. 2, in some embodiments, the side wall of the main pipe 100 is axially cut into two slits 150, and the two slits 150 are symmetrically distributed; wherein, the corresponding position of two kerfs all is equipped with the strip energy release piece 110 and the strip sealed pad 120.
Based on the fracturing device provided by the embodiment, the rock mass directional blasting method comprises the following steps:
and S1, opening the needle valve 302 on the filling channel, opening the filling channel, and filling carbon dioxide liquid into the main tube through the filling channel to fill the hollow cavity formed by the paper tube and the main tube.
In this embodiment, the carbon dioxide filling device is used to fill liquid carbon dioxide into the cavity formed by the paper tube and the main tube from the filling channel, and when the main tube is filled with liquid carbon dioxide, the filling device is closed, and then the needle valve is closed, so as to complete the process of filling liquid carbon dioxide.
And S2, inserting the slitting carbon dioxide fracturing device into the blast hole at a preset depth.
In this embodiment, the length of the fracturing device is determined according to the depth of the blast hole, if a single fracturing device is not long enough, a plurality of fracturing devices are axially connected through the adapter 400, the cutting joints 150 on the main pipes 100 of the adjacent cutting joint carbon dioxide fracturing devices need to be aligned in an axial collinear manner during connection, and the plurality of cutting joint carbon dioxide fracturing devices are integrally connected and then pushed into the blast hole of the rock body to be pre-fractured.
In the process of pushing the carbon dioxide fracturing unit into the blast hole, a supporting rod is connected to the fracturing unit at the opening of the blast hole, and the supporting rod is used for propping against the lancing carbon dioxide fracturing unit so as to ensure that the lancing carbon dioxide fracturing unit group does not slide out of the blast hole.
And S3, connecting the second binding post 204 with an electric excitation ignition device outside the cracking device, and igniting and exciting to start the slitting carbon dioxide cracking device.
The electrically-excited ignition device is an ignition device commonly used in blasting technology, and for example, the electrically-excited ignition device can be a mining explosion-proof type blaster, which is not described herein.
S4, the heating rod 200 is ignited by the conducting wire 205 in the paper tube 220, and a large amount of heat energy is released to instantly gasify the liquid carbon dioxide in the main tube 100, and the pressure in the tube is increased accordingly.
And S5, when the pressure reaches the shear strength limit of the strip-shaped energy release sheet arranged on the inner wall of the main pipe, the strip-shaped energy release sheet is sheared and damaged, high-energy and high-pressure carbon dioxide gas is released along the cutting seam to form linear cutting airflow, and the coal rock mass is cut in a preset direction to form a directional cutting seam.
It can be understood that the shear strength of the strip-shaped energy release sheet is lower than that of the rest positions of the inner wall of the main pipe, when the pressure in the main pipe 100 reaches the shear strength limit of the strip-shaped energy release sheet, the strip-shaped energy release sheet is broken, and the air flow impacts outwards from the broken strip-shaped energy release sheet along the correspondingly arranged cutting slits 150 to form linear cutting air flow to act on the coal rock mass.
According to the joint-cutting carbon dioxide fracturing device provided by the embodiment of the invention, the structure of the fracturing device is improved, energy can be linearly and directionally released, and when the fracturing device is arranged in blast holes such as a rock roadway, a shaft and the like, the rock mass can be conveniently directionally blasted, so that unnecessary damage to surrounding rocks is reduced, and the blasting effect is improved.
Specifically, referring to fig. 2, 5 and 8, a first sealing washer 260 is disposed at a contact position of the tail portion of the base 210 of the heating rod 200 and the end surface of the charging head 300, and is used for ensuring that a closed space is formed in the main pipe 100 after the heating rod 200 is ignited and started, so as to facilitate the joint cut 150 to be damaged after the air pressure rises.
With continued reference to fig. 5, the second terminal 204 is fixedly connected to the opening 203 by a nut 206, and a second sealing washer 207 is disposed at the joint of the nut 206 and the second terminal 204 for further improving the sealing performance.
In order to increase the heat energy released after the ignition of the heating rod 200 is started, in some embodiments, the paper tube 220 is filled with a heating agent; the heating agent is a mixture which can emit heat when a chemical reaction occurs under a certain temperature condition, and the components of the heating agent can adopt the finished product of the heating agent sold on the market; preferably, the heat generating agent in this embodiment is mainly composed of copper perchlorate, magnesium perchlorate, or the like; after the electric ignition device is ignited, the heating agent is burnt at a high speed, heat is provided for the gasification of the liquid carbon dioxide, the pressure in the tube can be increased rapidly, and the gas pressure required for destroying the strip-shaped energy leakage sheet can be obtained rapidly.
An electric ignition head 500 is connected to the lead; in this embodiment, the step S4 further includes:
the electric igniter in the heating rod paper tube ignites the heating agent, and the burning heating agent is utilized to increase the release of heat so as to accelerate the increase of the air pressure in the main tube 100.
Referring to fig. 4, the filling head 300 includes an end cap 320 having a boss 330 on a first surface thereof, and the end cap 320 and the boss 330 may be provided in an integral structure for easy processing; in some embodiments, the end cap has an outer diameter of 79mm, the boss has an outer diameter of 72mm, threads are provided on the outer circumference of the boss 330, and the boss has a height of 30 mm; the filling channel 310 is axially arranged in parallel with the mounting hole 303, the filling channel 310 is of a stepped hole structure and comprises a first stepped hole 311 and a second stepped hole 312, the first stepped hole 311 and the second stepped hole 312 are coaxially arranged, the first stepped hole 311 is arranged through a first surface and a second surface of the end cap 320, and the second surface is opposite to the first surface;
The mounting hole 303 is disposed through the boss 330 and the end cap 320, and a second thread is provided on an inner wall of the mounting hole 303 between an opening of the mounting hole 303 and the first surface of the end cap 320, for fixedly connecting the base 210 of the heating rod 200.
Specifically, the first end of head 300 fills passes through the second surface welding of end cover 320 in the first end of being responsible for 100, the first end of adapter 400 weld in the second end of being responsible for 100, the second end of head 300 fills is equipped with the external screw thread, adapter 400 is for having open-ended cylindric structure, the first end center of adapter 400 is equipped with first terminal 401, the second end of adapter is equipped with the internal thread. Wherein, the welding requirement guarantees the intensity and the leakproofness of sending the ware.
Referring to fig. 7, in some embodiments, when the joint lengthening of the kerf diode is needed, the second end of the adapter of one kerf carbon dioxide cracker is screwed with the second end of the filling head of the other kerf carbon dioxide cracker through the external thread and the internal thread.
In the embodiment, the connection of the plurality of slitting carbon dioxide fracturing devices can be regarded as rigid connection, and compared with a slitting explosive package, the slitting carbon dioxide fracturing device has certain advantages in hole feeding of deep hole blasting.
In some embodiments, the two ends of the first terminal 401 are connected by a nut 402, and a third sealing gasket 403 is disposed on a pressing surface of the nut 402.
Referring to fig. 8, the base 210 includes an end plate 211, a first boss 212 and a second boss 213, and the end plate 211 is a rounded rectangle or a rounded square; in some embodiments, the distance between two straight edges of the end plate 211 is 36mm, the radius of the circular arc is 20mm, and the edge of the first surface of the end plate 211 has a rounded corner with a radius of 0.5 mm; the first boss 212 is stacked on the first surface of the end plate 211, the second boss 213 is stacked on the upper surface of the first boss 212, the end plate 211, the first boss 212 and the second boss 213 may be arranged in an integrated structure, and the end plate 211, the first boss 212 and the second boss 213 are coaxially arranged;
the first boss 212 and the second boss 213 are cylindrical structures, the outer circumferential surface of the second boss 213 is provided with a third thread, the distance from the center to the edge of the end plate 211 is greater than the radius of the bottom surface of the first boss 212, and the radius of the bottom surface of the first boss 212 is greater than the radius of the bottom surface of the second boss 213;
the duct 203 penetrates the base 210, and includes a first step duct 2031 and a second step duct 2032, the first step duct 2031 extends from the upper surface of the second boss 213 to the second boss 213, the second step duct 2032 is connected to the end of the first step duct 311 and penetrates the second surface of the end plate 211, the first step duct 2031 and the second step duct 2032 are coaxially disposed, and the aperture of the second step duct 2032 is larger than the aperture of the first step duct 2031.
In some embodiments, the first step tunnels 2031 have a pore size of 3mm and the second step tunnels 2032 have a pore size of 10 mm.
In some embodiments, the two ends of the first terminal are connected by a nut, and a third sealing gasket is arranged on the pressing surface of the nut.
Referring to fig. 2, in some embodiments, the electrically-excited ignition device includes an electrical ignition head 500 (an ignition mode commonly used in the current firework setting process), the electrical ignition head 500 is located in the paper tube 220 of the heating rod 200, two wires are provided at two ends of the electrical ignition head, one of the two wires is connected to the second terminal 204 of the charging head 300, and the other wire is connected to the first terminal 401 of the adapter 400, so that the wires 205 on adjacent crackers are conducted; after the plurality of fracturing devices are axially butted, a first binding post 401 on a fracturing device adapter 400 at the bottom of a blast hole is communicated with a fracturing device pipe body; the second binding post 204 on the big gun mouth send and split ware filling head 300 switches on with the inside electric ignition head of heating rod 200, and first binding post 401 switches on with the body. Thus, the pipe body of the fracturing device is used as one pole inside the blast hole, the wiring inside the pipe body is used as one pole, a series circuit is formed, and electric excitation ignition can be realized to ignite the heating agent in the heating rod 200.
Wherein, be responsible for the body of being steel preparation for the lancing carbon dioxide that this embodiment provided sends and splits ware main part repeatedly usable basically, reduced the blasting cost.
In some embodiments, the main pipe 100 in the practice of the present invention is made of high strength special steel, and can be reused, reducing the blasting cost.
In conclusion, the lancing carbon dioxide fracturing device provided by the embodiment of the invention can release high-energy and high-pressure gas from two sides along the axial direction of the pipe body of the carbon dioxide fracturing device to directionally fracture the coal rock mass, and solves the problem that the traditional carbon dioxide fracturing device can only perform point blasting to release pressure; the main body part of the carbon dioxide cracking device can be basically reused, so that the blasting cost is reduced; the carbon dioxide sends and splits ware body and adopts special steel to make, compares the joint cutting cartridge bag, sends the hole at the directional blasting of deep hole and has the advantage, has avoided the restriction of explosive management and control simultaneously, and it is more convenient to use.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A lancing carbon dioxide fracturer, comprising: the heating device comprises a main pipe, a heating rod, a filling head and an adapter; the charging head is connected to the first end of the main pipe, the adapter is connected to the second end of the main pipe, and a first binding post is arranged on the adapter;
a filling channel for filling carbon dioxide into the main pipe is arranged on the filling head, and a needle valve for opening and closing the filling channel is arranged in the filling channel;
the heating rod comprises a base and a paper tube arranged on the base, the paper tube is arranged in the cavity of the main pipe, a mounting hole is formed in the filling head and parallel to the filling channel, the base of the heating rod is screwed in the mounting hole of the filling head, the tail of the base is pressed against the end face of the filling head, a hole channel is reserved on the base, a second wiring terminal is arranged in the hole channel and extends into the paper tube, a threading hole is formed in one end, far away from the base, of the paper tube, a guide wire for ignition is arranged at one end, located in the paper tube, of the second wiring terminal, and the guide wire is axially arranged in the paper tube and is led out from the threading hole to be connected to the second wiring terminal of the adapter;
the inner wall of the main pipe is axially provided with a strip-shaped energy release sheet for directionally releasing energy, and the side wall of the main pipe and the strip-shaped energy release sheet are correspondingly provided with a cutting seam.
2. The fracker of claim 1, wherein a strip gasket is disposed between said strip-shaped energy-dissipating tab and said main pipe inner wall at least at a position corresponding to said slit.
3. The fracturing device as claimed in claim 1, wherein the center of said slit is located on the main pipe middle section, and the two ends of said slit are symmetrically arranged with respect to the main pipe middle section.
4. The fracturing device of claim 1, wherein the slits are disposed radially through the sidewall of the main tube.
5. The fracturing unit of claim 1, wherein a sealing gasket is arranged at the contact position of the tail part of the base of the heating rod and the end face of the filling head.
6. The fracker of claim 1, wherein the filling head includes an end cap having a boss on a first surface thereof, the filling passage being axially parallel to the mounting hole, the filling passage being of stepped bore configuration including a first step bore and a second step bore, the first step bore being coaxially disposed with the second step bore, the first step bore being disposed through the end cap first and second surfaces, the second surface being opposite the first surface;
the second step hole axially penetrates through the boss to be connected with the first step hole, the aperture of the second step hole is larger than that of the first step hole, an injection port penetrating through the side face of the boss is formed in the side wall of the second step hole, and a first thread is formed in the inner wall of the second step hole between the orifice of the second step hole and the injection port;
the mounting hole penetrates through the boss and the end cover, and second threads are arranged on the inner wall of the mounting hole between the hole opening of the mounting hole and the first surface of the end cover.
7. The fracturing unit of claim 6, wherein the first end of the charging head is welded to the first end of the main pipe through the second surface of the end cap, the first end of the adapter is welded to the second end of the main pipe, the second end of the charging head is provided with external threads, the adapter is of an open-ended cylindrical structure, the first terminal center of the adapter is provided with the first terminal post, and the second end of the adapter is provided with internal threads.
8. The fracker of claim 1, wherein the base includes an end plate, a first boss, and a second boss, the end plate is a rounded rectangle, the first boss is stacked on a first surface of the end plate, the second boss is stacked on an upper surface of the first boss, and the end plate, the first boss, and the second boss are coaxially disposed;
the first boss and the second boss are of cylindrical structures, third threads are arranged on the outer circumferential surface of the second boss, the distance from the center to the edge of the end plate is greater than the radius of the bottom surface of the first boss, and the radius of the bottom surface of the first boss is greater than the radius of the bottom surface of the second boss;
the pore passes through the base setting, including first order pore and second order pore, first order pore certainly in second boss upper surface extends to the second boss, the second order pore with first order pore end links to each other, and runs through to the end plate second surface, first order pore and the coaxial setting of second order pore, second order pore aperture is greater than first order pore aperture.
9. The fracker of claim 1, wherein said main pipe is a pipe body made of a special steel material.
10. A method of directional blasting of rock mass, characterised in that it is implemented using the lancing carbon dioxide fracker of any one of claims 1 to 9, the method comprising the steps of:
opening a needle valve on the filling channel, opening the filling channel, and filling carbon dioxide liquid into the main pipe through the filling channel to fill the hollow cavity formed by the paper pipe and the main pipe;
inserting the joint-cutting carbon dioxide fracturing device into a preset depth of a blast hole;
connecting the second binding post with an electric excitation ignition device, and igniting and exciting to start the lancing carbon dioxide fracturing device;
the conducting wire in the heating paper tube ignites the heating agent to release a large amount of heat energy to instantly gasify the liquid carbon dioxide in the main tube, and the pressure in the main tube rises along with the liquid carbon dioxide;
when the pressure reaches the limit of the shear strength of the strip-shaped energy release sheet arranged on the inner wall of the main pipe, the strip-shaped energy release sheet is sheared and damaged, high-energy and high-pressure carbon dioxide gas is released along the cutting seam to form linear cutting airflow, and the coal rock mass is cut in a preset direction to form a directional cutting seam.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654411A (en) * | 2021-08-10 | 2021-11-16 | 北京科技大学 | Joint-cutting energy release head of carbon dioxide cracking device |
| CN113670135A (en) * | 2021-08-10 | 2021-11-19 | 北京科技大学 | Disposable in-hole carbon dioxide fracturing device and method for installing same into drilled hole |
| CN113790052A (en) * | 2021-09-08 | 2021-12-14 | 北京科技大学 | Porous symmetrical energy-releasing joint cutting carbon dioxide fracturing device along axial direction of drill hole |
| CN114323411A (en) * | 2021-12-13 | 2022-04-12 | 北京科技大学 | Internal pressure testing system and method for joint cutting carbon dioxide fracturing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2269265Y (en) * | 1996-03-07 | 1997-12-03 | 天津市激光技术研究所 | Laser seam cutting machine for sieve tube |
| RU2182969C2 (en) * | 2000-08-31 | 2002-05-27 | Адамович Борис Андреевич | Method of flameless breakage of solid bodies and device for its embodiment |
| US20140021772A1 (en) * | 2012-07-22 | 2014-01-23 | Longyear Tm, Inc. | Systems and methods for sonic subsurface material removal |
| CN108505999A (en) * | 2018-03-21 | 2018-09-07 | 六盘水师范学院 | A kind of high prominent more lane method for arranging of working face of coal seam |
| CN110793403A (en) * | 2019-11-19 | 2020-02-14 | 中交第二公路勘察设计研究院有限公司 | Novel high-efficient carbon dioxide phase transition send and splits ware |
| CN112129174A (en) * | 2020-09-03 | 2020-12-25 | 北京科技大学 | Rock mass directional fracturing device and rock mass directional blasting method |
-
2021
- 2021-02-05 CN CN202110169816.7A patent/CN112963146A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2269265Y (en) * | 1996-03-07 | 1997-12-03 | 天津市激光技术研究所 | Laser seam cutting machine for sieve tube |
| RU2182969C2 (en) * | 2000-08-31 | 2002-05-27 | Адамович Борис Андреевич | Method of flameless breakage of solid bodies and device for its embodiment |
| US20140021772A1 (en) * | 2012-07-22 | 2014-01-23 | Longyear Tm, Inc. | Systems and methods for sonic subsurface material removal |
| CN108505999A (en) * | 2018-03-21 | 2018-09-07 | 六盘水师范学院 | A kind of high prominent more lane method for arranging of working face of coal seam |
| CN110793403A (en) * | 2019-11-19 | 2020-02-14 | 中交第二公路勘察设计研究院有限公司 | Novel high-efficient carbon dioxide phase transition send and splits ware |
| CN112129174A (en) * | 2020-09-03 | 2020-12-25 | 北京科技大学 | Rock mass directional fracturing device and rock mass directional blasting method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654411A (en) * | 2021-08-10 | 2021-11-16 | 北京科技大学 | Joint-cutting energy release head of carbon dioxide cracking device |
| CN113670135A (en) * | 2021-08-10 | 2021-11-19 | 北京科技大学 | Disposable in-hole carbon dioxide fracturing device and method for installing same into drilled hole |
| CN113790052A (en) * | 2021-09-08 | 2021-12-14 | 北京科技大学 | Porous symmetrical energy-releasing joint cutting carbon dioxide fracturing device along axial direction of drill hole |
| CN114323411A (en) * | 2021-12-13 | 2022-04-12 | 北京科技大学 | Internal pressure testing system and method for joint cutting carbon dioxide fracturing device |
| CN114323411B (en) * | 2021-12-13 | 2024-02-23 | 北京科技大学 | System and method for testing internal pressure of kerf carbon dioxide fracturing device |
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