CN117780298A - Integrated hole sealing extraction device and method embedded with grouting channel and bag - Google Patents
Integrated hole sealing extraction device and method embedded with grouting channel and bag Download PDFInfo
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- CN117780298A CN117780298A CN202410199957.7A CN202410199957A CN117780298A CN 117780298 A CN117780298 A CN 117780298A CN 202410199957 A CN202410199957 A CN 202410199957A CN 117780298 A CN117780298 A CN 117780298A
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- hole sealing
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- 238000000605 extraction Methods 0.000 title claims abstract description 127
- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009423 ventilation Methods 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims description 19
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000003818 cinder Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000007581 slurry coating method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of hole sealing and extraction, in particular to an integrated hole sealing and extraction device and method for an embedded grouting channel and a bag, comprising a grouting pump, a grouting pipe arranged on the grouting pump, a ventilation pipeline and a plurality of sections of grouting and extraction integrated pipes which are butted together end to end, wherein each section of grouting and extraction integrated pipe comprises an annular outer pipe body and a partition plate arranged on the inner wall of the annular outer pipe body, and the partition plate divides the inside of the pipe body into a grouting channel and an extraction channel; the grouting pipe is communicated with the grouting channel, and the ventilation pipeline is communicated with the extraction channel. According to the invention, the grouting channel is embedded in the extraction pipe, so that the extraction channel, the grouting channel and the hole sealing bag form an integrated device, the outer surface of the pipe is smooth, and the difficult problem that the extraction pipe, the hole sealing pipe and the hole sealing bag tied outside the extraction pipe can be blocked by drilling holes and collapsing holes in a soft coal seam and are conveyed to a preset hole sealing position can be solved.
Description
Technical Field
The invention relates to the technical field of hole sealing extraction, in particular to an integrated hole sealing extraction device and method with an embedded grouting channel and a bag.
Background
The gas extraction technology is a main method for solving the problem of mine gas outburst. The gas extraction device and the method directly influence the quality of the gas extraction effect, and the efficient gas extraction device and the method can effectively improve the gas extraction efficiency, reduce the gas content of a coal bed and reduce the occurrence of mine gas outburst accidents.
However, at present, hole wall coal bodies are affected by ground stress and the coal seam geological conditions are limited when hole sealing and extraction are carried out on holes in a soft coal seam, so that the holes are blocked by falling of the coal bodies, and even the holes collapse in the soft coal seam, so that the existing hole sealing and extraction device cannot extend into the holes, grouting and hole sealing cannot be carried out at ideal positions, and the overall extraction effect of gas is affected. Therefore, it is necessary to develop a novel hole sealing extraction device and method for solving the above-mentioned problems.
Disclosure of Invention
The invention provides an integrated hole sealing extraction device and method with embedded grouting channels and bags, and aims to solve the problem that a drilling hole sealing grouting component cannot extend into an ideal grouting hole sealing position due to hole collapse of a drilling hole in a soft coal seam.
The invention is realized by the following technical scheme: an integrated hole sealing extraction device embedded with a grouting channel and a bag comprises a grouting pump, a grouting pipe arranged on the grouting pump and a ventilation pipeline; the grouting and extraction integrated pipe comprises a plurality of sections of grouting and extraction integrated pipes which are butted together end to end, each section of grouting and extraction integrated pipe comprises an annular outer pipe body and a partition plate arranged on the inner wall of the annular outer pipe body, and the partition plate divides the inside of the pipe body into a grouting channel and an extraction channel; the grouting pipe is communicated with the grouting channel, and the ventilation pipeline is communicated with the extraction channel;
the butt joint parts of two adjacent grouting extraction integrated pipes are respectively provided with an elastic buckling part and a connecting part, the elastic buckling part comprises a plurality of first connecting ends, the free ends of the first connecting ends are provided with wedge-shaped pieces, and a connecting groove is formed between the end surfaces of the wedge-shaped pieces and the first connecting ends; the connecting part comprises a ring-shaped second connecting end, a clamping groove matched with the wedge-shaped piece is formed in the second connecting end, and the free end of the second connecting end is clamped and matched with the connecting groove;
the outer annular pipe bodies of the grouting and extraction integrated pipes positioned at the head and the tail are contracted inwards to form annular bag grooves, hole sealing bags are arranged in the annular bag grooves, and the extraction channels and the hole sealing bags are mutually independent; the two ends of the hole sealing bag of the grouting and extraction integrated pipe at the head are communicated with grouting channels at two sides, the front end of the hole sealing bag of the grouting and extraction integrated pipe at the tail is communicated with a grouting channel at the opposite side, and the rear end of the hole sealing bag of the grouting and extraction integrated pipe at the tail is isolated from the grouting channel at the opposite side; the annular outer pipe body at the grouting channel of at least one section of grouting and extraction integrated pipe in the middle part is provided with a grouting hole, the slurry outlet hole is provided with a slurry explosion film; and adhesive tapes which are flush with the outer pipe wall of the annular outer pipe body are coated between the annular outer pipe bodies at the two sides of the annular bag groove.
As a further improvement of the technical scheme of the invention, the annular outer pipe body and the partition plate of two adjacent sections of grouting and extraction integrated pipes are respectively provided with an elastic clamping part and a connecting part.
As a further improvement of the technical scheme of the invention, the annular outer pipe body positioned at the grouting channel and the partition plate are oppositely provided with two first connecting ends, and the annular outer pipe body positioned at the extraction channel is uniformly provided with three first connecting ends.
As a further improvement of the technical scheme of the invention, the ventilating duct is communicated with the extraction channel through a high-pressure rotary water tail.
The invention further provides an integrated hole sealing and extraction method for the embedded grouting channel and the bag, which adopts the integrated hole sealing and extraction device for the embedded grouting channel and the bag, and comprises the following steps:
A. constructing a borehole into the coal seam;
B. according to the position and length to be grouting and plugged, the multiple sections of grouting and extraction integrated pipes are butted together, and the butted part is coated with sealant in advance for sealing;
C. the ventilation pipeline is communicated with the extraction channel, a valve of the ventilation pipeline is opened, and the butted grouting and extraction integrated pipe is pushed to a preset position while ventilation is carried out to the inside of the drill hole through the extraction channel to clean coal cinder;
D. closing a valve of the ventilation pipeline, connecting a grouting pump and a grouting pipe to a grouting channel extending out of the outer side of the drilling hole, opening a switch of the grouting pump, and grouting the drilling hole;
E. injecting slurry into the extraction channel by using a slurry injection pump, sequentially passing through a hole sealing bag of the grouting extraction integrated pipe positioned at the head part and a slurry injection channel of the grouting extraction integrated pipe positioned at the middle part, reaching the hole sealing bag of the grouting extraction integrated pipe positioned at the tail part, expanding the hole sealing bag along with the expansion of the grouting, sealing the hole by using a hole sealing bag supporting adhesive tape, and after the pressure in the slurry injection channel is continuously increased to a certain pressure, bursting a slurry coating film, and enabling the slurry to enter into holes between the hole sealing bags, and stopping grouting after the preset grouting pressure is reached;
F. and after the slurry is solidified, the extraction channel is externally connected with an extraction device to carry out extraction operation.
As a further improvement of the technical scheme of the method, the maximum pressure which can be borne by the adhesive tape is 0.5MPa, and the maximum pressure which can be borne by the burst coating film is 0.8MPa.
Compared with the prior art, the integrated hole sealing and extraction device and method for the embedded grouting channel and the bag provided by the invention have the following advantages:
according to the invention, the grouting channel is embedded in the extraction pipe, so that the extraction channel, the grouting channel and the hole sealing bag form an integrated device, the outer surface of the pipe is smooth, and the difficult problem that the extraction pipe, the hole sealing pipe and the hole sealing bag tied outside the extraction pipe can be blocked by drilling holes and collapsing holes in a soft coal seam and are conveyed to a preset hole sealing position can be solved. The invention has simple operation process and good hole sealing quality, and can obviously improve the gas extraction efficiency of the drilling.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an integrated hole sealing extraction device with embedded grouting channels and bags.
Fig. 2 is a schematic diagram of the arrangement of the hole sealing bag on the grouting and extraction integrated pipe.
Fig. 3 is a schematic diagram of the arrangement of the burst membrane on the grouting and extraction integrated pipe.
Fig. 4 is a schematic diagram of the cooperation of the grouting channel and the extraction channel according to the present invention.
Fig. 5 is a section A-A of fig. 1.
Fig. 6 is a sectional view of B-B of fig. 1.
Fig. 7 is a schematic structural view of the elastic buckle portion and the connecting portion according to the present invention.
In the figure: 1-grouting pump, 101-grouting pipe, 2-ventilation pipeline, 3-grouting extraction integral pipe, 301-annular outer pipe body, 302-partition plate, 303-grouting channel, 304-extraction pipeline, 305-adhesive tape, 306-first connecting part, 307-wedge piece, 308-connecting groove, 309-second connecting end, 310-clamping groove, 311-annular bag groove, 312-hole sealing bag, 313-slurry explosion coating film, 4-drilling, 5-high pressure rotary water tail and 6-coal seam.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be made. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
In the description, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the invention.
Specific embodiments of the present invention are described in detail below.
As shown in fig. 1 to 7, the present invention provides a concrete embodiment of an integrated hole sealing and extraction device with embedded grouting channels and bags, which comprises a grouting pump 1, a grouting pipe 101 arranged on the grouting pump 1, a ventilation pipeline 2, and a plurality of sections of grouting and extraction integrated pipes 3 which are butted together end to end, wherein each section of grouting and extraction integrated pipe 3 comprises an annular outer pipe body 301 and a partition plate 302 arranged on the inner wall of the annular outer pipe body 301, and the partition plate 302 partitions the inner part of the pipe body into a grouting channel 303 and an extraction channel 304; the grouting pipe 101 is communicated with a grouting channel 303, and the ventilation pipeline 2 is communicated with a pumping channel 304.
The butt joint parts of two adjacent grouting and extraction integrated pipes 3 are respectively provided with an elastic buckling part and a connecting part, the elastic buckling part comprises a plurality of first connecting ends 306, the free ends of the first connecting ends 306 are provided with wedge-shaped pieces 307, and a connecting groove 308 is formed between the end surfaces of the wedge-shaped pieces 307 and the first connecting ends 306; the connecting portion includes a second annular connecting end 309, the second connecting end 309 has a clamping groove 310 adapted to the wedge 307, and a free end of the second connecting end 309 is clamped with the connecting groove 308.
The annular outer pipe bodies 301 of the grouting and extraction integrated pipe 3 positioned at the head and the tail are contracted inwards to form annular bag grooves 311, hole sealing bags 312 are arranged in the annular bag grooves 311, and the extraction channels 304 and the hole sealing bags 312 are mutually independent; the two ends of the hole sealing bag 312 of the grouting and extraction integrated pipe 3 at the head are communicated with the grouting channels 303 at the two sides, the front end of the hole sealing bag 312 of the grouting and extraction integrated pipe 3 at the tail is communicated with the opposite side grouting channel 303, and the rear end of the hole sealing bag 312 of the grouting and extraction integrated pipe 3 at the tail is isolated from the opposite side grouting channel 303; the annular outer pipe body 301 at the grouting channel 303 of the at least one section of grouting and extraction integrated pipe 3 in the middle is provided with a grouting hole, and the grouting hole is provided with a grouting film 313; and adhesive tapes 305 which are flush with the outer tube wall of the annular outer tube 301 are coated between the annular outer tubes 301 at the two sides of the annular pocket groove 311.
In this embodiment, the inner diameter of the inner wall of the annular outer tube 301 is 70mm; the partition plate 302 is in an arc shape as shown in fig. 5, the central angle of the arc-shaped partition plate 302 is 215 degrees, and the inner diameter is 20mm. The maximum pressure that the annular outer tube 301 and the partition plate 302 can withstand in this embodiment is 3MPa.
The front end of the hole sealing bag 312 of the grouting and extraction integrated pipe 3 at the tail is communicated with the opposite side grouting channel 303, and the rear end of the hole sealing bag 312 of the grouting and extraction integrated pipe 3 at the tail is isolated from the opposite side grouting channel 303. In this embodiment, as shown in the direction of fig. 1, the hole sealing bag 312 of the grouting and extraction integrated pipe 3 at the tail is connected with the grouting channel 303 at the left side, and is in an isolated state with the grouting channel 303 at the right side, so as to avoid slurry flowing into the extraction channel 304.
In this embodiment, the maximum pressure that the burst coating 313 can withstand is 0.8MPa. When the pressure limit is reached in the grouting channel 303, the burst coating 313 breaks, and the slurry flows into the bore 4, filling the space of the bore 4 between the head and tail sealing pockets 312.
As shown in fig. 5, elastic fastening portions and connecting portions are respectively arranged on the annular outer pipe 301 and the partition plate 302 of the two adjacent sections of grouting and extraction integrated pipes 3. Specifically, two first connection ends 306 are disposed opposite to the annular outer tube 301 and the partition plate 302 at the grouting channel 303, and three first connection ends 306 are uniformly disposed on the annular outer tube 301 at the extraction channel 304.
As shown in fig. 1, the ventilation pipeline 2 is communicated with the extraction channel 304 through the high-pressure rotary water tail 5. The high-pressure rotary water tail 5 corresponds to a connector between the ventilating duct 2 and the extraction channel 304, and other components can be used as connectors by those skilled in the art.
Further, this embodiment also provides an integrated hole sealing and extraction method for the embedded grouting channel and the bag, which comprises the following steps:
A. constructing a borehole 4 into the coal seam;
B. according to the position and length to be grouting and plugged, the multi-section grouting and extraction integrated pipes 3 are butted together, and the butted part is coated with sealant in advance for sealing;
C. the ventilation pipeline 2 is communicated with the extraction channel 304, a valve of the ventilation pipeline 2 is opened, and the butted grouting and extraction integrated pipe 3 is pushed to a preset position while ventilation is carried out to the inside of the drilling hole 4 through the extraction channel 304 to clean coal cinder;
D. closing a valve of the ventilation pipeline 2, connecting the grouting pump 1 and the grouting pipe 101 to a grouting channel 303 extending out of the outer side of the drilling hole 4, and opening a switch of the grouting pump 1 to perform grouting operation on the constructed drilling hole 4;
E. grouting pump 1 is utilized to inject slurry into extraction channel 304, the slurry sequentially passes through hole sealing bags 312 of grouting extraction integrated pipe 3 at the head, grouting channel 303 of grouting extraction integrated pipe 3 at the middle, hole sealing bags 312 of grouting extraction integrated pipe 3 at the tail, along with the progress of grouting, hole sealing bags 312 at two ends expand, hole sealing bags 312 break adhesive tape 305 to seal holes 4, after the pressure in grouting channel 303 is continuously pressurized to a certain pressure, explosion coating 313 breaks, the slurry enters holes 4 between hole sealing bags 312, and grouting is stopped after the preset grouting pressure is reached;
F. after the slurry is solidified, the extraction channel 304 is externally connected with an extraction device to carry out extraction operation.
In a specific setting, the maximum pressure that the tape 305 can withstand is 0.5MPa. Preferably, in order to facilitate monitoring of the pressure in the grouting channel 303, a pressure gauge is provided on the grouting pipe 101 in this embodiment.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Although described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and they should be construed as covering the scope of the appended claims.
Claims (6)
1. The integrated hole sealing extraction device with embedded grouting channels and bags comprises a grouting pump (1), grouting pipes (101) arranged on the grouting pump (1) and a ventilation pipeline (2), and is characterized by further comprising a plurality of sections of grouting extraction integrated pipes (3) which are butted together end to end, each section of grouting extraction integrated pipe (3) comprises an annular outer pipe body (301) and a partition plate (302) arranged on the inner wall of the annular outer pipe body (301), and the partition plate (302) separates the inner part of the pipe body into a grouting channel (303) and an extraction channel (304); the grouting pipe (101) is communicated with the grouting channel (303), and the ventilation pipeline (2) is communicated with the extraction channel (304);
the butt joint parts of two adjacent grouting and extraction integrated pipes (3) are respectively provided with an elastic buckling part and a connecting part, the elastic buckling part comprises a plurality of first connecting ends (306), the free ends of the first connecting ends (306) are provided with wedge-shaped pieces (307), and a connecting groove (308) is formed between the end surfaces of the wedge-shaped pieces (307) and the first connecting ends (306); the connecting part comprises a second annular connecting end (309), a clamping groove (310) matched with the wedge-shaped piece (307) is formed in the second connecting end (309), and the free end of the second connecting end (309) is clamped and matched with the connecting groove (308);
the annular outer pipe bodies (301) of the grouting and extraction integrated pipes (3) positioned at the head and the tail are contracted inwards to form annular bag grooves (311), hole sealing bags (312) are arranged in the annular bag grooves (311), and the extraction channels (304) and the hole sealing bags (312) are mutually independent; the two ends of the hole sealing bag (312) of the grouting and extraction integrated pipe (3) at the head are communicated with grouting channels (303) at two sides, the front end of the hole sealing bag (312) of the grouting and extraction integrated pipe (3) at the tail is communicated with a grouting channel (303) at the opposite side, and the rear end of the hole sealing bag (312) of the grouting and extraction integrated pipe (3) at the tail is isolated from the grouting channel (303) at the opposite side; a grouting hole is formed in the annular outer pipe body (301) at the grouting channel (303) of the at least one section grouting and extraction integrated pipe (3) in the middle, and a grouting film (313) is arranged on the grouting hole; and adhesive tapes (305) which are flush with the outer tube walls of the annular outer tube bodies (301) are coated between the annular outer tube bodies (301) at the two sides of the annular bag groove (311).
2. The integrated hole sealing and extraction device with embedded grouting channels and bags according to claim 1, wherein elastic buckling parts and connecting parts are arranged on annular outer tubes (301) and partition plates (302) of two adjacent grouting and extraction integrated pipes (3).
3. The integrated hole sealing extraction device of an embedded grouting channel and a bag according to claim 1, wherein two first connecting ends (306) are oppositely arranged on an annular outer pipe body (301) positioned at the grouting channel (303) and a partition plate (302), and three first connecting ends (306) are uniformly distributed on the annular outer pipe body (301) positioned at the extraction channel (304).
4. An integrated hole sealing extraction device with embedded grouting channels and bags according to claim 3, wherein the ventilation pipeline (2) is communicated with the extraction channels (304) through a high-pressure rotary water tail (5).
5. An integrated hole sealing and extraction method for an embedded grouting channel and a bag, which adopts the integrated hole sealing and extraction device for the embedded grouting channel and the bag as claimed in any one of claims 1 to 4, and is characterized by comprising the following steps:
A. constructing a borehole (4) into the coal seam;
B. according to the position and length to be grouting and plugged, the multi-section grouting and extraction integrated pipes (3) are butted together, and the butted part is coated with sealant in advance for sealing;
C. the ventilation pipeline (2) is communicated with the extraction channel (304), a valve of the ventilation pipeline (2) is opened, and the grouting and extraction integrated pipe (3) which is in butt joint is pushed to a preset position while ventilation is carried out to the inside of the drilling hole (4) through the extraction channel (304) to clean coal cinder;
D. closing a valve of the ventilation pipeline (2), connecting the grouting pump (1) and the grouting pipe (101) to a grouting channel (303) extending out of the drilling hole (4), and opening a switch of the grouting pump (1) to perform grouting operation on the constructed drilling hole (4);
E. grouting pump (1) is used for injecting slurry into the extraction channel (304), the slurry sequentially passes through a hole sealing bag (312) of the grouting extraction integrated pipe (3) at the head part and a grouting channel (303) of the grouting extraction integrated pipe (3) at the middle part, reaches the hole sealing bag (312) of the grouting extraction integrated pipe (3) at the tail part, and expands along with the expansion of the hole sealing bag (312) when grouting is carried out, the hole sealing bag (312) breaks a rubber belt (305) to seal a drill hole (4), the pressure in the grouting channel (303) is continuously increased to a certain pressure, then the explosion slurry coating (313) is broken, and the slurry enters the drill holes (4) between the hole sealing bags (312) to stop grouting after reaching preset grouting pressure;
F. and after the slurry is solidified, the extraction channel (304) is externally connected with an extraction device to carry out extraction operation.
6. The method for extracting the integrated hole sealing of the embedded grouting channel and the bag according to claim 5, wherein the maximum pressure which can be borne by the adhesive tape (305) is 0.5MPa, and the maximum pressure which can be borne by the burst coating (313) is 0.8MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410199957.7A CN117780298A (en) | 2024-02-23 | 2024-02-23 | Integrated hole sealing extraction device and method embedded with grouting channel and bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410199957.7A CN117780298A (en) | 2024-02-23 | 2024-02-23 | Integrated hole sealing extraction device and method embedded with grouting channel and bag |
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| CN117780298A true CN117780298A (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410199957.7A Pending CN117780298A (en) | 2024-02-23 | 2024-02-23 | Integrated hole sealing extraction device and method embedded with grouting channel and bag |
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