CN206495659U - A kind of underground coal mine one-part form water sealing device - Google Patents
A kind of underground coal mine one-part form water sealing device Download PDFInfo
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- CN206495659U CN206495659U CN201621463283.4U CN201621463283U CN206495659U CN 206495659 U CN206495659 U CN 206495659U CN 201621463283 U CN201621463283 U CN 201621463283U CN 206495659 U CN206495659 U CN 206495659U
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- water
- capsula interna
- expandable bladder
- injection pipe
- coal mine
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Abstract
The utility model discloses a kind of underground coal mine one-part form water sealing device, the device is in extraction borehole, including drainage tube, water injection pipe, two expansion tubes, provided with the expandable bladder for accommodating water-soluble gel between two expansion tubes.When being sealed using the device, with the rising of pressure, expansion tube first fills expansion, and then expandable bladder rupture makes water and colloidal sol seal crack in drilling.Device of the present utility model fills expansion tube using fluid and realizes that the upstream and downstream progress to coal mine borehole fissure is closed, and closed rear water and water-soluble gel are mixed to form colloidal sol, effectively fill confined space.Colloidal sol has preferable moisture retention and sealing, solves the defect that existing solid sealing material causes sealing effectiveness to be deteriorated after extraction for a period of time due to drilling deformation, excellent sealing property can be kept for a long time.
Description
Technical field
The utility model is related to coal mining device, relates in particular to a kind of underground coal mine one-part form water sealing device.
Background technology
Gas pumping is the essential measure and main path of control of coalmine gas, and the sealing of hole effect of extraction borehole is to extraction
Effect has very big influence, is mainly shown as that borehole sealing effect is poor, and drilling gas leak phenomenon is serious, and gas extraction concentration is very
It is low.This so cause the gas extraction concentration in many mining areas not reach utilizable concentration, gas utilization rate is low, substantial amounts of
Gas is discharged into air, not only causes the huge waste of gas resources, and pollution is also caused to air.
Method for sealing the most frequently used at present is, by drainage tube two ends in polyurethane closure drilling, then to inject water in centre
Cement mortar realizes sealing of hole.The problem of this method has very big, because underground work environment is very poor, cement mortar material is matched somebody with somebody
When stir the influence factor being subject to a lot, it is difficult to operated in strict accordance with ratio requirement, and hole-sealing technology is also more numerous
It is trivial.Because with the extraction of coal-bed gas, drilling can deform, and after cement mortar and polyurethane material hardening consolidation, shape
Shape is difficult with the change of drilling hole shape and changed, and final sealing effectiveness is deteriorated, and gas leakage is serious.
The content of the invention
Goal of the invention：The purpose of this utility model is to provide a kind of underground coal mine and adapts to borehole shape underground coal mine one-part form
The device of water-stop.
Technical scheme：To achieve the above object, a kind of underground coal mine one-part form water sealing device of the present utility model, including
Drainage tube in extraction borehole, provided with one section of water injection pipe in drainage tube, the water injection pipe periphery is provided with can fill the
One expansion tube and the second expansion tube, part of the water injection pipe between the first expansion tube and the second expansion tube are provided with from extraction tube wall
The tie point passed, tie point end is provided with the first expandable bladder；Water injection pipe corresponds to the first expansion tube and second swollen respectively
The part of tube expansion is respectively provided with second branch road passed from extraction tube wall.
It is directly full to the first expansion tube and the second expansion tube water filling as a kind of embodiment of the present utility model, with
Realize the sealing to mine drilling.The tie point is connected through threeway with water injection pipe；The end of tie point is provided with one the
One check valve.It is additionally provided with the first capsula interna being connected with the first check valve in first expandable bladder, the first capsula interna and first swollen
Being filled between swollen utricule has water-soluble gel, and pressure during the first expandable bladder rupture is more than pressure when the first capsula interna ruptures
Power.
As preferred embodiment of the present utility model, the first expansion tube and the second expansion tube are realized using water-soluble gel
Full, specifically, the end of described two second branch roads is provided with the second expandable bladder.
Further, provided with the first capsula interna connected with water injection pipe, the first capsula interna and first in first expandable bladder
Being filled between expandable bladder has water-soluble gel；Provided with the second capsula interna connected with water injection pipe in described two second expandable bladders,
Being filled between second capsula interna and the second expandable bladder has water-soluble gel.
Further, pressure during the first expandable bladder rupture is more than pressure when the second expandable bladder ruptures；Institute
Pressure when stating the rupture of the first expandable bladder is more than pressure when the first capsula interna ruptures, pressure during the second expandable bladder rupture
Power is more than pressure when the second capsula interna ruptures.
Further, the tie point is connected through threeway with water injection pipe, and the end of tie point is provided with connection first
First check valve of capsule；Second branch road is connected with water injection pipe respectively through threeway, and the end of two the second branch roads is respectively equipped with
Second capsula interna is respectively provided with one the second check valve, each second one-way valved outlet.
First expansion tube and the second expansion tube described in the utility model are swollen at least provided with one layer of rubber layer and one layer of limitation
The spinning layer of cloth of swollen volume.In general, spin layer of cloth be located at rubber layer outer layer, spin cloth layer material include but is not limited to polyamide fibre, terylene,
The combination of any one or more cloth blending of aramid fiber.
Water-soluble gel described in the utility model includes but is not limited to third solidifying, sodium carboxymethylcellulose, water-soluble pollopas
Any one.The water-soluble gel can form the spawn with better pressure resistance after meeting water, and the spawn oozes
The sealing of sealing of hole sections is effectively raised after entering in the crack around drilling.And water-soluble gel has certain moisture retention and bullet
Property, it after extraction for a period of time, can be deformed with the denaturation of drilling, remain the tight closure to drill hole inner wall crack.
The method that drilling is sealed using aforementioned means, for the side of the first expansion tube and the direct water filling of the second expansion tube
Case, is to water injection pipe persistent pressure water filling；
In P0, the first expansion tube and the second expansion tube water-filling expand and extrude drill hole inner wall, make the first expansion tube and
Closed cavity is formed between two expansion tubes；
In P4, the first check valve is opened, and is started to the first capsula interna water filling；
In P5, the rupture of the first capsula interna, water and water-soluble gel are mixed to form colloidal sol in the first expandable bladder；
In P6, the first expandable bladder rupture, colloidal sol is filled in the closed cavity；
In P7, stop water filling；
Wherein, P0, P4, P5, P6, P7 represent different water injection pressures, P7 ＞ P6 ＞ P5 ＞ P4 ＞ P0.
The method that drilling is sealed using aforementioned means, as the encapsulation scheme of preferred sealing device of the present utility model, be
To water injection pipe persistent pressure water filling,
In P1, the second check valve is opened, and is started to the second capsula interna water filling；
In P2, the rupture of the second capsula interna, water and water-soluble gel are mixed to form colloidal sol in the second expandable bladder；
In P3, the rupture of the second expandable bladder, water and colloidal sol fill the first expansion tube and the second expansion tube, make its expansion simultaneously
Drill hole inner wall is extruded, closed cavity is formed between the first expansion tube and the second expansion tube；
In P4, the first check valve is opened, and is started to the first capsula interna water filling；
In P5, the rupture of the first capsula interna, water and water-soluble gel are mixed to form colloidal sol in the first expandable bladder；
In P6, the rupture of the first expandable bladder, water and colloidal sol are filled in the closed cavity；
In P7, stop water filling；
Wherein, P1 to P7 represents different water injection pressures, P7 ＞ P6 ＞ P5 ＞ P4 ＞ P3 ＞ P2 ＞ P1.
It should be noted that, the utility model P1-P7 pressure is long according to the first expansion tube, the second expansion tube material, leak stopping
Degree, bore diameter difference and carry out accommodation.
Beneficial effect：Sealing device of the present utility model fills expansion tube using fluid and realized to coal mine borehole fissure
Upstream and downstream progress is closed, and is filled and the full two schemes of the good water-soluble gel of deformation effect there is provided cost-effective water；
Closed rear water and water-soluble gel are mixed to form colloidal sol, effectively fill confined space.Colloidal sol has preferable moisture retention and sealing,
The defect that existing solid sealing material causes sealing effectiveness to be deteriorated after extraction for a period of time due to drilling deformation is solved,
Excellent sealing property can be kept for a long time.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 3.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Embodiment 1
A kind of underground coal mine one-part form water sealing device, including the drainage tube in extraction borehole, set in drainage tube
There is one section of water injection pipe, water injection pipe periphery is provided with the first expansion tube and the second expansion tube that can be filled, and water injection pipe is in the first expansion tube
And the second part between expansion tube is provided with the tie point passed from extraction tube wall, tie point end is provided with the first expansion
Utricule；Water injection pipe correspond to respectively the first expansion tube and the second expansion tube part be respectively provided with one article passed from extraction tube wall the
Two branch roads.Tie point is connected through threeway with water injection pipe；The end of tie point is provided with first check valve.First swelling bag
The first capsula interna being connected with the first check valve is additionally provided with vivo, being filled between the first capsula interna and the first expandable bladder has water-soluble solidifying
Glue, pressure when the first expandable bladder ruptures is more than pressure when the first capsula interna ruptures.
First expansion tube and the second expansion tube limit the spinning cloth of swelling volume at least provided with one layer of rubber layer and one layer
Layer.In general, spin layer of cloth be located at rubber layer outer layer, spin cloth layer material include but is not limited to polyamide fibre, terylene, aramid fiber any one
Or the combination of a variety of cloth blending.
Water-soluble gel includes but is not limited to any one of third solidifying, sodium carboxymethylcellulose, water-soluble pollopas.It is water-soluble
Gel can form the spawn with better pressure resistance after meeting water, after the spawn is penetrated into the crack around drilling
Effectively raise the sealing of sealing of hole sections.And water-soluble gel has certain moisture retention and elasticity, after extraction for a period of time,
It can be deformed with the denaturation of drilling, remain the tight closure to drill hole inner wall crack.
Embodiment 2
Using the method for the one-part form sealing device sealing drilling of the present embodiment 1, to water injection pipe persistent pressure water filling, with
The rising of hydraulic pressure：
First expansion tube and the second expansion tube water-filling expand and extrude drill hole inner wall, make the first expansion tube and the second expansion tube
Between form closed cavity；
When hydraulic pressure rises to 0.5MPa, the first check valve is opened, and is started to the first capsula interna water filling；
When hydraulic pressure rises to 0.6MPa, the rupture of the first capsula interna, water and water-soluble gel are mixed to form molten in the first expandable bladder
Glue；
When hydraulic pressure rises to 0.7MPa, the first expandable bladder rupture, colloidal sol is filled in the closed cavity；
When hydraulic pressure rises to 1MPa, stop water filling；
Wherein, P0, P4, P5, P6, P7 represent different water injection pressures, P7 ＞ P6 ＞ P5 ＞ P4 ＞ P0.
Embodiment 3
As shown in figure 1, a kind of underground coal mine one-part form water sealing device, including the drainage tube 1 in extraction borehole,
Provided with one section of water injection pipe 2 in drainage tube 1, the periphery of water injection pipe 2 is provided with the first expansion tube 3 and the second expansion tube 4 that can be filled, water filling
Part of the pipe 2 between the first expansion tube 3 and the second expansion tube 4 is provided with the tie point 5 passed from the tube wall of drainage tube 1, water filling
Pipe 2 corresponds to the first expansion tube 3 respectively and the part of the second expansion tube 4 is respectively provided with second passed from the tube wall of drainage tube 1
Road 6.The end of tie point 5 is provided with the first expandable bladder 7；The end of two the second branch roads 6 is respectively provided with second expandable bladder
8。
Provided with the first capsula interna 9 connected with water injection pipe 2, the first capsula interna 9 and the first expandable bladder 7 in first expandable bladder 7
Between fill have water-soluble gel；Provided with the second capsula interna 10 connected with water injection pipe 2, the second capsula interna in two the second expandable bladders 8
10 and second fill between expandable bladder 8 and have water-soluble gel.
Pressure when first expandable bladder 7 ruptures is more than pressure when the second expandable bladder 8 ruptures；First expandable bladder 7
Pressure during rupture is more than pressure when the first capsula interna 9 ruptures, and pressure when the second expandable bladder 8 ruptures is more than the second capsula interna 10
Pressure during rupture.
Tie point 5 is connected through threeway 11 with water injection pipe 2, and the end of tie point 5 is provided with the first of the first capsula interna 9 of connection
Check valve 12；Second branch road 6 is connected with water injection pipe 2 respectively through threeway 11, and the end of two article of second branch road 6 is respectively equipped with one
Two check valves 13, each exit of second check valve 13 is respectively provided with second capsula interna 10.
Embodiment 4
As shown in figure 1, the method for sealing drilling using the improvement one-part form sealing device described in embodiment 3, to water injection pipe 2
Persistent pressure water filling, with the rising of hydraulic pressure：
When hydraulic pressure rises to 0.2MPa, the second check valve 13 is opened, and is started to the water filling of the second capsula interna 10；
When hydraulic pressure rises to 0.3MPa, the second capsula interna 10 ruptures, water and water-soluble gel the mixing shape in the second expandable bladder 8
Into colloidal sol；
When hydraulic pressure rises to 0.4MPa, the second expandable bladder 8 ruptures, and water and colloidal sol the first expansion tube 3 and second of filling are swollen
Tube expansion 4, expands it and extrudes drill hole inner wall, and closed cavity 14 is formed between the first expansion tube 3 and the second expansion tube 4；
When hydraulic pressure rises to 0.5MPa, the first check valve 12 is opened, and is started to the water filling of the first capsula interna 9；
When hydraulic pressure rises to 0.6MPa, the first capsula interna 9 is ruptured, and water and water-soluble gel are mixed to form in the first expandable bladder 7
Colloidal sol；
When hydraulic pressure rises to 0.7MPa, the first expandable bladder 7 ruptures, and water and colloidal sol are filled in the closed cavity 14；
When hydraulic pressure rises to 1MPa, stop water filling；
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (8)
1. a kind of underground coal mine one-part form water sealing device, including the drainage tube in extraction borehole, it is characterised in that：Taking out
Adopt provided with one section of water injection pipe in pipe, the water injection pipe periphery is provided with the first expansion tube and the second expansion tube that can be filled, water injection pipe
Part between the first expansion tube and the second expansion tube is provided with the tie point passed from extraction tube wall, tie point end
Provided with the first expandable bladder；Water injection pipe corresponds to the first expansion tube respectively and the part of the second expansion tube is respectively provided with one from drainage tube
The second branch road that tube wall is passed.
2. a kind of underground coal mine one-part form water sealing device according to claim 1, it is characterised in that：The tie point
It is connected through threeway with water injection pipe；The end of tie point is provided with first check valve.
3. a kind of underground coal mine one-part form water sealing device according to claim 2, it is characterised in that：First expansion
The first capsula interna being connected with the first check valve is additionally provided with utricule, being filled between the first capsula interna and the first expandable bladder has water-soluble solidifying
Glue, pressure during the first expandable bladder rupture is more than pressure when the first capsula interna ruptures.
4. a kind of underground coal mine one-part form water sealing device according to claim 1, it is characterised in that：Described two second
The end of branch road is provided with the second expandable bladder.
5. a kind of underground coal mine one-part form water sealing device according to claim 4, it is characterised in that：First expansion
Being filled provided with the first capsula interna connected with water injection pipe in utricule, between the first capsula interna and the first expandable bladder has water-soluble gel；Institute
State provided with the second capsula interna connected with water injection pipe in two the second expandable bladders, filled between the second capsula interna and the second expandable bladder
There is water-soluble gel.
6. a kind of underground coal mine one-part form water sealing device according to claim 5, it is characterised in that：First expansion
Pressure when utricule ruptures is more than pressure when the second expandable bladder ruptures；Pressure during the first expandable bladder rupture is more than
Pressure when first capsula interna ruptures, pressure during the second expandable bladder rupture is more than pressure when the second capsula interna ruptures.
7. a kind of underground coal mine one-part form water sealing device according to claim 6, it is characterised in that：The tie point
It is connected through threeway with water injection pipe, first check valve of the end provided with the first capsula interna of connection of tie point；The second branch road warp
Threeway is connected with water injection pipe respectively, and the end of two the second branch roads is respectively equipped with second check valve, each second check valve
Exit is respectively provided with second capsula interna.
8. a kind of underground coal mine one-part form water sealing device according to claim 1 to 7 any one, it is characterised in that：
The spinning layer of cloth of first expansion tube and the second expansion tube at least provided with one layer of rubber layer and one layer of limitation swelling volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463283.4U CN206495659U (en) | 2016-12-28 | 2016-12-28 | A kind of underground coal mine one-part form water sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463283.4U CN206495659U (en) | 2016-12-28 | 2016-12-28 | A kind of underground coal mine one-part form water sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206495659U true CN206495659U (en) | 2017-09-15 |
Family
ID=59802778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621463283.4U Active CN206495659U (en) | 2016-12-28 | 2016-12-28 | A kind of underground coal mine one-part form water sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206495659U (en) |
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2016
- 2016-12-28 CN CN201621463283.4U patent/CN206495659U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190122 Address after: 210000 R&D Building No.2, Yuhe Road, Jiangpu Street, Pukou District, Nanjing City, Jiangsu Province Co-patentee after: Yangquan Coal Industry (Group) Co., Ltd. Patentee after: Nanjing cast an energy technology Co., Ltd. Address before: 210000 R&D Building No.2, Yuhe Road, Jiangpu Street, Pukou District, Nanjing City, Jiangsu Province Patentee before: Nanjing cast an energy technology Co., Ltd. |
|
| TR01 | Transfer of patent right |