CN209763897U - coal rock deep hole jet composite explosion fracturing integrated pipe - Google Patents
coal rock deep hole jet composite explosion fracturing integrated pipe Download PDFInfo
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- CN209763897U CN209763897U CN201920424056.8U CN201920424056U CN209763897U CN 209763897 U CN209763897 U CN 209763897U CN 201920424056 U CN201920424056 U CN 201920424056U CN 209763897 U CN209763897 U CN 209763897U
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- integrated pipe
- pipe
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- deep hole
- coal rock
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Abstract
Aiming at the problems of coal rock deep hole directional fracturing, high stress surrounding rock pressure relief, permeability increase of low permeability coal rock and the like, the utility model discloses a coal rock deep hole jet composite explosion fracturing integrated pipe, which comprises an integrated pipe body, an integrated pipe head, an integrated pipe tail, a back cover tray, a pipe head cover, a shaped charge cover and a detonating cord string pipe; the shaped charge cover is V-shaped, the shaped charge cover and the integrated pipe body are cast and pressed into a whole, independent charge is carried out in the integrated pipe body, the detonating cord serial pipes are movably connected, and the integrated pipes can be directionally inserted and connected, so that large-angle charge of the coal rock deep hole is facilitated. The outer side of the integrated pipe body is provided with a reverse claw; the bottom sealing tray is fixed at one end of the integrated pipe body close to the tail of the integrated pipe, and the pipe head cover is fixed at one end of the integrated pipe body close to the head of the integrated pipe; the bottom sealing tray and the tube head cover are respectively provided with a through hole; one end of the detonating cord string tube is connected with the bottom sealing tray, and the other end of the detonating cord string tube is connected with the tube head cover. The utility model discloses be convenient for nimble, install fast and use, realized the deep hole efflux betterly and made the continuity of seam to and the light weight and the integration of perforation equipment.
Description
Technical Field
the utility model belongs to the technical field of the coal petrography deep hole blasting and specifically relates to a coal petrography deep hole efflux composite explosion fracturing collecting tube.
Background
the drilling and blasting method construction is widely used in various geotechnical and mining engineering at home and abroad by virtue of the advantages of safety, high efficiency and low cost. The explosion fracturing breaks the surrounding rock of the hole wall through shock waves generated by explosive explosion, and the explosion fracturing cracks are further expanded through the wedging and cracking increasing action of explosive gas. In field practice, in order to achieve a good directional seam forming effect, the guide is usually performed by using hollow holes, but the drilling distance is relatively small, the high-density drilling cost is high, and the design difficulty of an accurate drilling arrangement scheme is high; the adopted grooving and slitting pipe relieves the contradiction between the directional grooving process and the light weight of the equipment to a certain extent, but is limited by the grooving depth, and the explosive explosion energy-gathering efficiency is to be further improved; the perforating bullet used in the petroleum industry obtains a good seepage joint cutting effect based on high-density metal jet flow, the radius of the single-hole jet flow is large, the problem of frequent drilling at small intervals is well solved, but deep hole charging of the perforating bullet needs to be supported by a steel pipe bracket, the quality is heavy, the size is large, underground construction of a coal mine is difficult, especially the difficulty is higher for large-angle deep hole charging conditions, and more metal materials participate in the high-temperature high-pressure explosion process under the gas mine conditions, so that great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
the utility model aims to solve the technical problem that overcome prior art defect, to the directional fracturing of coal petrography deep hole, high stress country rock release, the permeability-increasing scheduling problem of hypotonic coal petrography, provide a coal petrography deep hole efflux composite explosion fracturing collecting tube.
In order to achieve the technical purpose, the coal rock deep hole jet composite explosion fracturing integrated pipe provided by the utility model comprises an integrated pipe body, an integrated pipe head, an integrated pipe tail, a back cover tray, a pipe head cover, a shaped charge cover and an explosion wire string pipe; the shaped charge liner is V-shaped, the shaped charge liner and the integrated pipe body are cast and pressed into a whole, independent charge is carried out in the integrated pipe body, the detonating cord serial pipes are movably connected, and the integrated pipes can be directionally inserted and connected, so that large-angle charge of the coal rock deep hole is facilitated; the thickness of the integrated pipe body is 2-4 mm; the thickness of the liner is 1-2 mm. The outside of the integrated pipe body is provided with inverted claws which can prevent slipping; the bottom sealing tray is fixed at one end of the integrated pipe body close to the tail of the integrated pipe, and the pipe head cover is fixed at one end of the integrated pipe body close to the head of the integrated pipe; the bottom sealing tray and the tube head cover are respectively provided with a through hole; one end of the detonating cord string tube is connected with the bottom sealing tray, and the other end of the detonating cord string tube is connected with the tube head cover.
Preferably, the shaped charge liner is made of red copper; the integrated pipe body is made of flame-retardant, antistatic and corrosion-resistant PE or PCV materials; the press-connection edge of the shaped charge liner and the integrated pipe body needs to be processed by rough edges or perforation, so that the press-connection is firm and reliable.
Preferably, the opening angle of the liner is 45-70 degrees.
Preferably, aiming at the requirement of directional seam forming on the two sides of a drilled hole, the liner covers are symmetrically arranged on the section of the integrated pipe body; under the condition of drilling unilateral directional seam making, the shaped charge liner is arranged on the single side of the cross section of the integrated pipe body.
Preferably, the head part of the integrated pipe and the tail part of the integrated pipe are provided with guide inserting concave-convex grooves, wherein the head part of the integrated pipe is provided with a groove for a male connector, and the tail part of the integrated pipe is provided with a convex groove for a female connector; the groove corresponds to the convex groove.
Preferably, the bottom sealing tray at the tail part of the integrated pipe is required to be integrally cast with the integrated pipe body, and a 10mm through hole is formed in the middle of the integrated pipe body; under the condition of charging liquid explosive, the integrated tube head is sealed and connected with a tube head cover in a casting way, and an exhaust hole is additionally arranged; under the condition of condensed explosive bulk charge, the head sealing pipe head cover of the integrated pipe is in a loose joint type, and the head of the integrated pipe is additionally provided with an inner ring pipe head cover buckle.
Preferably, the material of the detonating cord stringing tube is a flame-retardant, antistatic and corrosion-resistant PE or PVC thin-wall tube. And an anti-slip step is arranged at one end of the detonating cord string tube connected with the back cover tray. In the process of charging the integrated tube, firstly, the detonating cord string tube is charged, then, the explosive is charged, and finally, the tube head cover is packaged.
Preferably, the device further comprises an installation pipe; the end part of the mounting pipe is provided with a thread; the two sides of the outer wall of the installation pipe are provided with directional grooves. The alignment is required to install the pipe orientation slots during the end of the thread-on.
The application of the integrated tube comprises the following steps:
The method comprises the following steps: taking off the pipe head cover at the head of the integrated pipe, arranging the detonating cord stringing pipe in the integrated pipe, and erecting the anti-skid step on the periphery of the perforation of the bottom sealing tray;
Step two: setting the tail part of the integrated pipe and the head part of the integrated pipe upward, righting the detonating cord string pipe, and filling the integrated pipe body with allowable explosives of coal mine until the integrated pipe body is flush with the liner cover at the head part of the integrated pipe;
Step three: adopting a pipe head cover to seal and block the integrated pipes filled with the explosives, and repeating the steps from one step to three to finish a plurality of explosive-filled integrated pipes;
Step four: before the explosive-filled integrated pipes are installed in the coal rock deep hole, 1-3 explosive-filled integrated pipes are taken as a group, and an explosion wire penetrates from the head of the integrated pipe to the tail of the integrated pipe and penetrates through all the installation pipes; directionally inserting the head part and the tail part of the integrated pipes between the integrated pipes in the group along the grooves and the convex grooves, conveying the integrated pipes to the bottom of the hole by adopting the mounting pipes, and turning the angles of the mounting pipes to ensure that the connection lines of the directional grooves on the two sides of the pipe wall are always along the directional direction;
Step five: after the first group of integrated tubes with the detonating cord are installed to the bottom of the hole, the claws are reversed to realize the self-stabilization of the explosive-filled integrated tubes in the hole, and at the moment, the installation tubes are sequentially pulled out and disassembled; sequentially leading the detonating cord which is sequentially led out along the hole wall to pass through the head part of the integrated tube, the tail part of the integrated tube and the mounting tube between the second group of integrated tubes according to the same step, dragging the detonating cord exposed at the tail part of the mounting tube, continuing to feed the second group of explosive-filled integrated tubes into the hole by the mounting tube, and adjusting the direction of the mounting tube when the detonating cord is close to the tail part of the first group of integrated tubes in the hole to realize the butt joint of the two groups of explosive-filled integrated tubes in the; completing all installation work of the rest explosive charging integrated pipe groups in the hole in sequence according to the steps;
Step six: and plugging the blast hole by using a hole sealing material to finish the coal rock deep hole charging and plugging operation, and carrying out the on-line detonation operation when the hole sealing material is solidified to reach a certain strength.
the utility model has the advantages that: 1. the metal shaped charge liner of the coal rock deep hole jet composite explosion fracturing integrated pipe is cast and pressed with the plastic pipe shell into a whole, the transportation and the carrying are convenient, the directional splicing mode is adopted between the pipe bodies, the flexible and quick installation and use are convenient, and the continuity of deep hole jet flow crack making and the light weight and the integration of the perforation equipment are well realized. 2. The loose joint type detonating cord string tube is adopted, so that the explosive charge of the integrated tube is isolated from the detonating equipment, and the transportation and use safety of the explosive charge integrated tube is guaranteed; the detonating fuse is used for loading at present, so that the safety and reliability of the detonation operation of the explosive charging integration pipe are ensured. 3. The integrated pipes and the installation pipes are all in a directional insertion mode, and the integrated pipes are provided with anti-slip claws and directional concave-convex grooves, so that the large-angle rapid directional charging effect of the coal rock deep hole is well realized. Mainly aiming at the problems of directional fracturing of deep holes of coal rock, pressure relief of high-stress surrounding rock, permeability increase of low-permeability coal rock and the like, the metal jet composite explosion fracturing method is adopted to realize the effects of pre-fracturing, pressure relief, permeability increase and the like of the coal rock.
Drawings
FIG. 1 is a schematic view of the overall structure of an integrated pipe;
FIG. 2 is a cross-sectional view of the end of the manifold;
FIG. 3 is a cross-sectional view of the header of the manifold;
FIG. 4 is a cross-sectional view of an integrated tube body;
FIG. 5 is a schematic view of the overall construction of the installation tube;
In the figure: 1-integrated tube head, 2-integrated tube tail, 3-bottom sealing tray, 4-tube head cover, 5-perforation, 6-inverted claw, 7-shaped liner, 8-detonating cord stringing tube, 9-installation tube, 10-orientation groove, 11-thread, 12-convex groove, 13-groove, 14-tube head cover buckle.
Detailed Description
Taking the practice of the deep hole directional explosion fracturing field of the hard top plate of the temporary roadway as an example, the hole depth is 45m, the charging section is 30m, the hole sealing section is 15m, the drilling elevation angle is 70 degrees, and the drilling diameter is 100 mm. The method adopts the allowable powdery emulsion explosive in the coal mine to carry out the deep hole jet composite explosion fracturing construction operation, and obtains the effect of regularly cutting off the hard top plate on the side of the roadway face to the air along the axial direction of the roadway. The use of the device is further illustrated with reference to figures 1-5.
Aiming at the pre-splitting condition of the deep hole directional blasting of the hard top plate of the temporary roadway, the selected coal rock deep hole jet composite blasting and fracturing integrated pipe comprises an integrated pipe body, an integrated pipe head part 1, an integrated pipe tail part 2, a bottom sealing tray 3, a pipe head cover 4, a shaped charge cover 7, a detonating cord string pipe 8 and a mounting pipe 9; the outer diameter of the integrated pipe is 64mm, the inner diameter of the integrated pipe is 60mm, the axial total length of the integrated pipe is 1500mm, the splicing length of the head portion 1 of the integrated pipe and the tail portion 2 of the integrated pipe is 85mm, the thickness of the bottom sealing tray 3 and the thickness of the sealing pipe head cover 4 are 3mm, the middle of the bottom sealing tray 3 and the middle of the pipe head cover 4 are provided with 10mm through holes 5, and the outer wall surface of the integrated pipe body is provided with a pawl 6. The shaped charge liner 7 is V-shaped, and the shaped charge liner 7 and the integrated pipe body are cast and pressed into a whole; the shaped charge cover 7 is made of red copper, the axial length is 1324mm, the opening angle is 50 degrees, the opening width is about 21mm, the wall thickness is 1mm, and the symmetrical bilateral arrangement is realized on the cross section of the integrated pipe body. The length of the detonating cord stringing tube 8 is 1344mm, and the outer diameter is 10 mm. The head part 1 of the integrated pipe is provided with a groove 13, and the tail part 2 of the integrated pipe is provided with a convex groove 12; the groove 13 corresponds to the groove 12. The tube head cover 4 and the integrated tube body are connected in a loose joint mode, and a tube head cover buckle 14 is arranged on the tube head cover 4. The end part of the mounting pipe 9 is provided with a thread 11; the two sides of the outer wall of the mounting pipe 9 are provided with directional grooves 10.
The use and operation steps of the coal rock deep hole jet flow composite explosion fracturing integrated pipe body are as follows:
first, the head cover 4 of the header 1 of the integrator is removed, and the detonating cord stringing tube 8 with the anti-slip step is installed in the integrator, and the anti-slip step is erected around the through hole 5 of the back cover tray 3.
Secondly, the tail part 2 of the integrated pipe is arranged downwards, the head part 1 of the integrated pipe is arranged upwards, the detonating cord serial pipe 8 is righted, and the integrated pipe is filled with coal mine allowable powdery emulsion explosive until the integrated pipe is flush with the liner 7 at the head part 1 of the integrated pipe.
And finally, plugging the explosive-filled integrated pipes by using a pipe head cover 4, and finishing 20 explosive-filled integrated pipes according to the steps.
Before the explosive-filled integrated pipes are installed in deep holes of a top plate of an adjacent empty roadway, 1-3 explosive-filled integrated pipes are used as a group, and a detonating cord with the length of 50m penetrates from the head part 1 of the integrated pipe to the tail part 2 of the integrated pipe and penetrates through all the installation pipes 9. The head and the tail of the integrated pipes in the group are directionally inserted and connected along the concave-convex grooves, the mounting pipes 9 are adopted to convey the integrated pipes to the bottom of the hole, and the angles of the mounting pipes 9 are timely adjusted to enable the connection lines of the directional grooves 10 on the two sides of the pipe wall to be always along the axial direction of the roadway.
After the first group of integrated tubes with the detonating cord are installed to the bottom of the hole, the anti-slip pawl 6 can realize the self-stabilization of the explosive-filled integrated tubes in the hole, and at the moment, the installation tubes 9 are pulled out and disassembled in sequence. According to the same steps, the detonating cord which is sequentially led out along the hole wall passes through the head part and the tail part between the second group of integrated tubes and the mounting tube 9, the detonating cord exposed at the tail part of the mounting tube 9 is dragged, the mounting tube 9 is continued to send the second group of explosive integrated tubes into the hole, when the detonating cord is close to the tail part of the first group of integrated tubes in the hole, the direction of the mounting tube is timely adjusted, and the butt joint of the two groups of explosive integrated tubes in the hole is realized. And finishing all installation work of the rest explosive charging integrated pipe groups in the hole in sequence according to the steps.
And finally, carrying out efficient plugging on the blast hole by adopting a special hole sealing material, completing deep hole charging and plugging operation of the near-empty roadway top plate, and carrying out next-step connecting line detonation operation when the hole sealing material is solidified to reach a certain strength.
it should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (8)
1. a coal rock deep hole jet composite explosion fracturing integrated pipe comprises an integrated pipe body, an integrated pipe head (1), an integrated pipe tail (2), a bottom sealing tray (3), a pipe head cover (4), a shaped charge cover (7) and a detonating cord string pipe (8); the shaped charge liner (7) is V-shaped, and the shaped charge liner (7) and the integrated pipe body are cast and pressed into a whole; the outer side of the integrated pipe body is provided with a reverse claw (6); the bottom sealing tray (3) and the pipe head cover (4) are respectively fixed at two ends of the integrated pipe body and are respectively provided with a through hole (5); one end of the detonating cord stringing tube (8) is connected with the back cover tray (3), and the other end is connected with the tube head cover (4).
2. The coal rock deep hole jet composite explosion fracturing integrated pipe of claim 1, characterized in that: the integrated pipe body is made of PE or PVC; the pressing connection edge of the shaped charge cover (7) and the integrated pipe body is processed by rough selvedge or perforation, and the shaped charge cover (7) is made of red copper.
3. The coal rock deep hole jet composite explosion fracturing integrated pipe of claim 1, characterized in that: the opening angle of the shaped charge liner (7) is 45-70 degrees.
4. The coal rock deep hole jet composite explosion fracturing integrated pipe of claim 1, characterized in that: the shaped charge liner (7) is symmetrically arranged on the two sides or arranged on the single side of the cross section of the integrated pipe body.
5. The coal rock deep hole jet composite explosion fracturing integrated pipe of claim 1, characterized in that: the head (1) of the integrated pipe is provided with a groove (13), and the tail (2) of the integrated pipe is provided with a convex groove (12); the groove (13) corresponds to the convex groove (12).
6. The coal rock deep hole jet composite explosion fracturing integrated pipe of claim 1, characterized in that: the pipe head cover (4) and the integrated pipe body are connected in a cast connection mode or a loose connection mode; when the cast joint type is adopted, the pipe head cover (4) is provided with an exhaust hole, and when the loose joint type is adopted, the pipe head cover (4) is provided with a pipe head cover buckle (14).
7. The coal rock deep hole jet composite explosion fracturing integrated pipe of claim 1, characterized in that: the detonating cord serial pipe (8) is made of PE or PVC; and an anti-skid step is arranged at one end of the detonating cord serial pipe (8) connected with the back cover tray (3).
8. The coal rock deep hole jet flow composite explosion fracturing integrated pipe according to any one of claims 1 to 7, characterized in that: also comprises a mounting tube (9); the end part of the mounting pipe (9) is provided with a thread (11); and two sides of the outer wall of the mounting pipe (9) are provided with directional grooves (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920424056.8U CN209763897U (en) | 2019-04-01 | 2019-04-01 | coal rock deep hole jet composite explosion fracturing integrated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920424056.8U CN209763897U (en) | 2019-04-01 | 2019-04-01 | coal rock deep hole jet composite explosion fracturing integrated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209763897U true CN209763897U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920424056.8U Withdrawn - After Issue CN209763897U (en) | 2019-04-01 | 2019-04-01 | coal rock deep hole jet composite explosion fracturing integrated pipe |
Country Status (1)
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| CN (1) | CN209763897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813191A (en) * | 2019-04-01 | 2019-05-28 | 中国矿业大学 | Coal petrography deep hole jet stream composite explosion protection pressure break integrated pipe and its application |
-
2019
- 2019-04-01 CN CN201920424056.8U patent/CN209763897U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813191A (en) * | 2019-04-01 | 2019-05-28 | 中国矿业大学 | Coal petrography deep hole jet stream composite explosion protection pressure break integrated pipe and its application |
| CN109813191B (en) * | 2019-04-01 | 2023-10-24 | 中国矿业大学 | Coal and rock deep hole jet flow composite explosion fracturing integrated pipe and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191210 Effective date of abandoning: 20231024 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191210 Effective date of abandoning: 20231024 |