CN103352675B - A kind of mash gas pumping drilling sealing device and method - Google Patents
A kind of mash gas pumping drilling sealing device and method Download PDFInfo
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- CN103352675B CN103352675B CN201310272466.2A CN201310272466A CN103352675B CN 103352675 B CN103352675 B CN 103352675B CN 201310272466 A CN201310272466 A CN 201310272466A CN 103352675 B CN103352675 B CN 103352675B
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Abstract
The present invention provides a kind of mash gas pumping drilling sealing device and method, including gas pumping pipe, it is sleeved on drainage tube energy water-permeable and air permeable and the soft film bag that viscous slurry can be stoped to flow out, described soft film bag is axially extending along drainage tube, soft film bag two ends are tightly connected with drainage tube respectively, and soft film bag connects near one end of drainage tube afterbody grouting device；During sealing of hole, slurry is passed through in soft film bag by grouting device, and after slurry reaches certain pressure, grout oozes out entrance boring and boring crack around from soft film bag, seals the gap between boring and drainage tube and boring crack around, it is ensured that sealing effectiveness；Compare tradition " two block up a note " method for blocking, it is to avoid return pipe is on the impact of slurry overfall pressure release in boring.
Description
Technical field
The invention belongs to coal mine gas Treatment process and equipment field, relate to coal mine gas extraction and bore
Hole Sealing Technology, particularly relates to a kind of mash gas pumping drilling sealing device and method.
Background technology
Mash gas pumping drilling sealing is the key technology of the gas control means such as gas pumping.Gas is taken out both at home and abroad
Commonly used " two block up a note " hole-sealing technology on borehole sealing technology.Sealing material many employings polyurethane, organic
The material such as resin and cement mortar, polyurethane or other organic material cost are high, and produce toxic and harmful
To people's injury relatively greatly, and chance water shrinks the problem causing borehole sealing to lose efficacy and has not been solved yet, and scene should
With less.Cement mortar relative inexpensiveness, applies relatively broad at the scene.But boring due to the most on-the-spot
Hole slip casting sealing technology is loaded down with trivial details, and " two block up " technology at two ends is the most immature, therefore during later stage slip casting,
Slurry is easy to overflow from " two block up ", causes grouting pressure can not reach design load, it is difficult to boring around
Crack seals；And after slurry solidifies, concrete is existing with the boring generation of rib around gap, causes
Borehole sealing lost efficacy.Therefore, in order to solve borehole sealing technical barrier, it is badly in need of seeking a kind of new boring close
Seal apparatus and method, particularly all can reach satisfactory sealing performance to boring cavity and surrounding crack, with
Meet coal mine down-hole drilling and seal needs.
Summary of the invention
The problem that it is an object of the invention to exist for prior art, proposes one and to boring cavity and around splits
Gap good sealing effect, low cost, the mash gas pumping drilling sealing device of simple in construction and method.
For achieving the above object, the present invention is by the following technical solutions:
A kind of mash gas pumping drilling sealing device, including drainage tube, be sleeved on drainage tube can water-permeable and air permeable and
Can stop the soft film bag that viscous slurry flows out, described soft film bag is axially extending along drainage tube, and soft film bag two ends are divided
Not being tightly connected with drainage tube, soft film bag connects near one end of drainage tube afterbody grouting device.
Described soft film bag is macromolecule braid, and soft film bag count in the certain limit of both ends is compared
Mid portion is tight, and it is big to be prone to circumferentially extending, circumferentially extending amount.
Described drainage tube is in charge of by many and is connected in sequence, and described soft film bag for packing fruits is in charge of at many and is linked to be
On drainage tube.
Described soft film bag two ends are fastened on drainage tube through cutting ferrule and slip casting cutting ferrule respectively, cutting ferrule and slip casting cutting ferrule
Between be connected with the some wires preventing axially extended and many of soft film bag to be in charge of Joint failure, slip casting card
Putting and offer slip casting interface, slip casting cutting ferrule is connected with grouting device by slip casting interface.
Described grouting device includes slip casting platform, connects slip casting platform and the Grouting Pipe of soft film bag, and Grouting Pipe is installed
There is valve.
Described slip casting platform is provided with monitors the Pressure gauge of slurry pressure in soft film bag.
A kind of mash gas pumping drilling encapsulating method, comprises the following steps:
(1) by soft film bag for packing fruits on drainage tube, soft film bag seals with drainage tube near drainage tube head one end
Connect；
(2) drainage tube send into boring in, when reach design sealed borehole length time, by the soft film bag other end with take out
Adopt the seal of tube to connect；
(3) soft film bag (2) being connected with grouting device, start injection hole sealing, soft film bag slurry pressure reaches
After predetermined pressure, stop slip casting, treat that slurry has solidified slip casting.
Described soft film bag (2) is macromolecule braid, can compression resistance be 0～7MPa, and soft film bag (2) is leaned on
In two close end portion certain limit, count compares mid portion closely, and is prone to circumferentially extending, circumferentially extending
Amount is big, Quick extension closure boring during slip casting.
In described step (2), drainage tube is in charge of by many and is connected in sequence, and is in charge of send first into boring
In, when delivering to correct position, be in charge of lower to be in charge of with first and be connected, and repeat above-mentioned operation until
Reach to design sealed borehole length, then the soft film bag other end is tightly connected with drainage tube.
In described step (3), grouting device includes slip casting platform, connects slip casting platform and the Grouting Pipe of soft film bag, note
Being provided with valve on slurry pipe, slip casting platform is provided with monitors the Pressure gauge of slurry pressure in soft film bag；Injection hole sealing
Time, when the Pressure gauge show value on slip casting platform reaches design load, close valve, stop slip casting, and will note
Slurry platform recycles, and completes slip casting after slurry solidification.
The present invention uses and is set with energy water-permeable and air permeable and the soft film bag that viscous slurry can be stoped to flow out on drainage tube,
During sealing of hole, slurry is passed through in soft film bag by grouting device, soft film bag circumferentially extending vertically by borehole sealing,
After slurry reaches certain pressure, grout oozes out entrance boring and boring crack around from soft film bag, seals boring
And the gap between drainage tube and boring crack around, it is ensured that in boring and crack, slurry is maintained at certain pressure,
Ensure sealing effectiveness；Compare tradition " two block up a note " method for blocking, remove return pipe from, it is to avoid return pipe
On the impact of slurry overfall pressure release in boring.This device is only made up of drainage tube, soft film bag and grouting device,
Simple in construction, it is easy to operation controls, and sealing of hole is effective, low cost, is with a wide range of applications.
Further, soft film bag is macromolecule braid, soft film bag count in the certain limit of both ends
Compare mid portion tight, and be prone to circumferentially extending, circumferentially extending amount greatly, can Quick extension when slip casting
Effectively closure boring two ends, the most traditional " two block up " effect；Solve existing mash gas pumping drilling to seal
Technique is loaded down with trivial details, " two block up a note " actual operation difficulty, it is difficult to reach to design a difficult problem for plugging effect, energy
Realizing " two block up a note " and disposably operate control, the thin pulp that soft film bag mid portion penetrates enters coal body,
Boring crack around is sealed in conjunction with the colloid in slurry, more preferable to boring two ends plugging effect, effectively prevent from boring
Hole slurry is revealed, and protects sealing effectiveness further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the use state reference map of the present invention；
Reference: 1-drainage tube, 2-soft film bag, 3-cutting ferrule, 4-slip casting cutting ferrule, 5-wire, 6-slip casting
Interface, 7-Grouting Pipe, 8-valve, 9-Pressure gauge, 10-slip casting platform, 11-grouting port, 12-holes.
Detailed description of the invention
Below in conjunction with the accompanying drawings inventive embodiment is further described:
As depicted in figs. 1 and 2, the mash gas pumping drilling sealing device of the present invention, including being sleeved on drainage tube 1
On soft film bag 2, soft film bag 2 two ends are fastened on drainage tube 1 through cutting ferrule 3 and slip casting cutting ferrule 4 respectively,
Drainage tube 1 is in charge of by many and is connected in sequence, and is connected with and prevents soft film bag between cutting ferrule 3 and slip casting cutting ferrule 4
2 axially extending and some wires 5 of drainage tube 1 Joint failure, the slip casting interfaces 6 on slip casting cutting ferrule 4
Connecting Grouting Pipe 7, Grouting Pipe 7 other end connects the valve 8 outside boring 12, valve and slip casting platform 10
Connecting through fast interface, slip casting platform 10 is provided with monitors the Pressure gauge 9 of soft film bag slurry pressure and connects slip casting
The grouting port 11 of pump.Described soft film bag 2 porous is ventilative but viscous slurry can be stoped to flow out, during slip casting relatively
Dilute slurry can pass through soft film bag 2 and enters boring 12 surrounding cracks, in conjunction with colloid in slurry to boring 12 weeks
Enclosing crack to seal, the length of soft film bag 2 and circumferentially extending amount can customize according to field requirement；Cutting ferrule 3
And slip casting cutting ferrule 4 is connected with drainage tube 1 through screw thread or other connected modes；Pressure gauge 9 on slip casting platform 10
The pressure of slurry in soft film bag can be monitored, and can recycle with slip casting platform 10 after stopping slip casting.
Described soft film bag 2 is macromolecule braid, can compression resistance be 0～7MPa, and its length can be according to existing
Field needs braiding relative close in customization, soft film bag 2 two ends certain limit, but is prone to circumferentially extending and radial direction
Span is relatively large, can Quick extension closure boring 12 when slip casting.Before slip casting, soft film bag 2 can
It is attached to drainage tube 1 outer wall, it is simple to drainage tube 1 is sent into and specified position, after soft film bag 2 slip casting pressurized axially
Stretching and controlled by wire 5, circumferentially extending amount customizes according to field requirement, is fully able to meet boring 12 close
Envelope and hole wall radial strain requirement.
The mash gas pumping drilling encapsulating method utilizing said apparatus to realize is as follows:
A. require to make length and the circumferentially extending amount of soft film bag 2, and the length of wire 5 according to design
Degree, and is connected to wire 5 on cutting ferrule 3 and slip casting cutting ferrule 4, soft film bag 2 packing is lived wire 5,
Cutting ferrule 3 and slip casting cutting ferrule 4, be finally fastened on soft film bag 2 two ends on cutting ferrule 3 and slip casting cutting ferrule 4；
B. soft film bag 2 is fixed on through cutting ferrule 3 one end of drainage tube 1, drainage tube 1 start inwards give
Enter boring 12；
C., when delivering to correct position, lower drainage tube 1 is in charge of 1 through slip casting cutting ferrule 4 and soft film bag 2
It is in charge of with above drainage tube 1 and is connected, and repeat above-mentioned operation until reaching to design sealed borehole length, now
Soft film bag 2 is fastened on drainage tube 1 other end through slip casting cutting ferrule 4；
D. connect Grouting Pipe 7 and the slip casting interface 6 on slip casting cutting ferrule 4, and the soft film bag of drainage tube 1 will be cased with
2 send into appointment position, connect Grouting Pipe 7 and valve 8, are simultaneously connected with valve 8 and slip casting platform 10, slip casting
Mouth 11 and grouting pump, start injection hole sealing；
E. when Pressure gauge 9 show value on slip casting platform 10 reaches design load, close valve 8, stop slip casting,
And slip casting platform 10 is recycled；
F. after slurry solidifies, unload lower valve 8, reuse after maintenance.
Claims (6)
1. a mash gas pumping drilling sealing device, it is characterised in that: include drainage tube (1), be sleeved on and take out
Adopt pipe (1) upper energy water-permeable and air permeable and the soft film bag (2) that viscous slurry can be stoped to flow out, described soft film bag (2)
Axially extending along drainage tube (1), soft film bag (2) two ends are tightly connected with drainage tube (1) respectively, soft film
Bag (2) connects near one end of drainage tube (1) afterbody grouting device；
Described soft film bag (2) is macromolecule braid, and soft film bag (2) is compiled in the certain limit of both ends
Knitting density, to compare mid portion tight, and it is big to be prone to circumferentially extending, circumferentially extending amount；
Described drainage tube (1) is in charge of by many and is connected in sequence, and described soft film bag (2) is sleeved on many
It is in charge of on the drainage tube being linked to be；
Described soft film bag (2) two ends are fastened on drainage tube (1) through cutting ferrule (3) and slip casting cutting ferrule (4) respectively
On, it is connected with between cutting ferrule (3) and slip casting cutting ferrule (4) and prevents soft film bag (2) axially extended and many point
Some wires (5) of pipe Joint failure, slip casting cutting ferrule (4) offers slip casting interface (6), slip casting
Cutting ferrule (4) is connected with grouting device by slip casting interface (6).
Mash gas pumping drilling sealing device the most according to claim 1, it is characterised in that: described slip casting
Device includes slip casting platform (10), connects slip casting platform (10) and the Grouting Pipe (7) of soft film bag (2), slip casting
On pipe (7), valve (8) is installed.
Mash gas pumping drilling sealing device the most according to claim 2, it is characterised in that: described slip casting
Platform (10) is provided with the Pressure gauge (9) of the monitoring interior slurry pressure of soft film bag (2).
4. use mash gas pumping drilling sealing device as claimed in claim 1 to carry out a borehole sealing method,
It is characterized in that comprising the following steps:
(1) soft film bag (2) being sleeved on drainage tube (1), soft film bag (2) is near drainage tube (1)
Head one end is tightly connected with drainage tube (1)；
(2) drainage tube (1) is sent in boring (12), when reaching to design sealed borehole length, by soft film
Bag (2) other end is tightly connected with drainage tube (1)；
(3) soft film bag (2) being connected with grouting device, start injection hole sealing, soft film bag slurry pressure reaches
After predetermined pressure, stop slip casting, treat that slurry has solidified slip casting；
Described soft film bag (2) is macromolecule braid, can compression resistance be 0～7MPa, and soft film bag (2) is leaned on
In two close end portion certain limit, count compares mid portion closely, and is prone to circumferentially extending, circumferentially extending
Amount is big, Quick extension closure boring during slip casting.
Mash gas pumping drilling encapsulating method the most according to claim 4, it is characterised in that: described step
(2) in, drainage tube (1) is in charge of by many and is connected in sequence, and is in charge of send first into boring (12)
In, when delivering to correct position, be in charge of lower to be in charge of with first and be connected, and repeat above-mentioned operation until
Reach to design sealed borehole length, then soft film bag (2) other end is tightly connected with drainage tube (1).
Mash gas pumping drilling encapsulating method the most according to claim 4, it is characterised in that: described step
(3) in, grouting device includes slip casting platform (10), connects slip casting platform (10) and the Grouting Pipe of soft film bag (2)
(7), Grouting Pipe (7) being provided with valve (8), slip casting platform (10) is provided with slurry in the soft film bag of monitoring
The Pressure gauge (9) of pressure；During injection hole sealing, when Pressure gauge (9) show value on slip casting platform (10) reaches
During design load, closing valve (8), stop slip casting, and recycled by slip casting platform (10), slurry solidifies
After complete slip casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272466.2A CN103352675B (en) | 2013-07-01 | 2013-07-01 | A kind of mash gas pumping drilling sealing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272466.2A CN103352675B (en) | 2013-07-01 | 2013-07-01 | A kind of mash gas pumping drilling sealing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103352675A CN103352675A (en) | 2013-10-16 |
| CN103352675B true CN103352675B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310272466.2A Active CN103352675B (en) | 2013-07-01 | 2013-07-01 | A kind of mash gas pumping drilling sealing device and method |
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| CN103615212A (en) * | 2013-12-13 | 2014-03-05 | 新乡市嘉汇科技有限公司 | Two-blocking one-grouting grouting and hole sealing device |
| CN105114118A (en) * | 2015-08-21 | 2015-12-02 | 贵州大学 | Flat hole gas extraction structure and implementing method thereof |
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| CN114541999B (en) * | 2021-12-23 | 2023-12-22 | 平顶山市安泰华矿用安全设备制造有限公司 | Continuous pressure-maintaining hole sealing method |
| CN114382438A (en) * | 2022-01-21 | 2022-04-22 | 平顶山市安泰华矿用安全设备制造有限公司 | Hole packer for mine gas extraction |
| CN115199237A (en) * | 2022-07-21 | 2022-10-18 | 山西潞安集团潞宁煤业有限责任公司 | Gas extraction hole reinforcing device and method |
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| CN103352675A (en) | 2013-10-16 |
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Effective date of registration: 20220906 Address after: 714026 north side of South Street, new area, high tech Industrial Development Zone, Weinan City, Shaanxi Province Patentee after: Weinan Shaanxi coal Qichen Technology Co.,Ltd. Address before: 710077 Shaanxi Coal Industry Chemical Group Co., Ltd. No. 2 Jinye Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: SHAANXI COAL AND CHEMICAL TECHNOLOGY INSTITUTE Co.,Ltd. |
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