CN107060807A - Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method - Google Patents
Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method Download PDFInfo
- Publication number
- CN107060807A CN107060807A CN201710286594.0A CN201710286594A CN107060807A CN 107060807 A CN107060807 A CN 107060807A CN 201710286594 A CN201710286594 A CN 201710286594A CN 107060807 A CN107060807 A CN 107060807A
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- Prior art keywords
- gas
- tunnel
- coal seam
- leakage preventing
- preventing structure
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Links
- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims description 7
- 239000006260 foam Substances 0.000 claims abstract description 16
- 239000000565 sealant Substances 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The multi-level leakage preventing structure applied behind coal seam is passed through the invention discloses a kind of gas tunnel, the gas shading ring as made from airtightness concrete is provided with the head and end on the outside of gas tunnel periphery, impervious barrier is provided with the inside of the periphery of the gas tunnel, the impervious barrier includes the airtightness concrete layer, gas sealant coating, foam carpet, gas isolation flaggy and secondary lining layer set gradually from outside to inside.Beneficial effects of the present invention：On the one hand multi-level gas antiseepage supporting is utilized, can effectively prevent gas from being permeated along tunnel ring, on the other hand can prevent gas from being spread along tunnel axial direction, so that gas is isolated in coal seam.
Description
Technical field
The present invention relates to technical field of tunnel construction, it particularly relates to which a kind of gas tunnel passes through what is applied behind coal seam
Multi-level leakage preventing structure.
Background technology
Old house tunnel is located at Sichuan Province Yibin City Xingwen County kylin township within the border, total length 6423m, and circuit is 20 ‰ one side
Go up a slope, on radius 7000m right avertence curves.This Tunnel Passing coal seam high methane and can lava location, tunnel initial risks etc.
Level is assessed as " height ", and entrance working section is high methane work area.By geologic prospect, tunnel needs to pass through rich in 2 layers of coal seam, coal seam
It is extremely crucial to the Anti-seeping technology of gas containing gas.
The problem of in correlation technique, effective solution is not yet proposed at present.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes that a kind of gas tunnel passes through applied behind coal seam many
Level leakage preventing structure and construction method, can effectively prevent gas from permeating and axially diffusing along tunnel ring.
To realize above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A kind of gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam, the head and end on the outside of gas tunnel periphery
Place is provided with the inside of the gas shading ring as made from airtightness concrete, the periphery of the gas tunnel and is provided with impervious barrier,
The impervious barrier include set gradually from outside to inside airtightness concrete layer, gas sealant coating, foam carpet, gas every
From flaggy and secondary lining layer.
Further, the radial width of the gas shading ring is 1m, and axial depth is 2m.
The multi-level leakage preventing structure construction method applied behind coal seam is passed through the invention also discloses a kind of gas tunnel, including
Following steps：
S1 excavates gas tunnel, and the original position in the gas tunnel and end position edge on the coal seam of populated with gas
Its periphery outwards excavates a cavity；
S2 backfills airtightness concrete gas shading ring is made in the cavity；
S3 sprays airtightness concrete as first branch on the inside of gas tunnel, to form airtightness concrete layer；
S4 sprays gas sealant gas sealant coating is made on the inside of airtightness concrete layer；
S5 performs foam pad foam carpet is made on the inside of the gas sealant coating；
S6 performs gas division board on the inside of the foam carpet and isolates flaggy so that gas is made；
S7 performs secondary lining secondary lining layer is made on the inside of gas isolation flaggy.
Beneficial effects of the present invention：On the one hand multi-level gas antiseepage supporting is utilized, can effectively prevent gas along tunnel
Road ring infiltration, on the other hand can prevent gas from being spread along tunnel axial direction, so that gas is isolated in coal seam.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the sectional view of impervious barrier described according to embodiments of the present invention；
Fig. 2 is the structural representation of gas shading ring described according to embodiments of the present invention；
Fig. 3 is the sectional view of gas shading ring described according to embodiments of the present invention.
In figure：
1st, gas tunnel；2nd, gas shading ring；3rd, airtightness concrete layer；4th, gas sealant coating；5th, foam carpet；6th, watt
This isolation flaggy；7th, secondary lining layer；8th, coal seam.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belongs to what the present invention was protected
Scope.
As Figure 1-3, a kind of described gas tunnel passes through applied behind coal seam multi-level according to embodiments of the present invention
Leakage preventing structure, the gas as made from airtightness concrete is provided with the head and end on the outside of the periphery of gas tunnel 1 and is isolated
Impervious barrier is provided with the inside of ring 2, the periphery of the gas tunnel 1, the impervious barrier includes the gas set gradually from outside to inside
Close property concrete layer 3, gas sealant coating 4, foam carpet 5, gas isolation flaggy 6 and secondary lining layer 7.
In one particular embodiment of the present invention, the radial width of the gas shading ring 2 is 1m, and axial depth is
2m。
The multi-level leakage preventing structure construction method applied behind coal seam is passed through the invention also discloses a kind of gas tunnel, including
Following steps：
S1 excavates gas tunnel 1 on the coal seam 8 of populated with gas, and in the original position and stop bits of the gas tunnel 1
Put along its periphery and outwards excavate a cavity；
S2 backfills airtightness concrete gas shading ring 2 is made in the cavity；
S3 is propped up in the inner side of gas tunnel 1 injection airtightness concrete as first, to form airtightness concrete layer 3；
S4 is in the inner side spraying gas sealant of airtightness concrete layer 3 with obtained gas sealant coating 4；
S5 performs foam pad foam carpet 5 is made in the inner side of gas sealant coating 4；
S6 performs gas division board in the inner side of foam carpet 5 and isolates flaggy 6 so that gas is made；
S7 performs secondary lining secondary lining layer 7 is made in the inner side of gas isolation flaggy 6.
Understand for convenience the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical scheme is described in detail.
The present invention prevents gas from being permeated along tunnel ring by impervious barrier, and impervious barrier is followed successively by air-tightness and mixed from outside to inside
Solidifying soil layer 3, gas sealant coating 4, foam carpet 5, gas isolation flaggy 6 and secondary lining layer 7, the first and last of gas tunnel 1
Two ends set gas shading ring 2, to prevent gas from being spread along tunnel axial direction, pass through being total to for gas shading ring 2 and impervious barrier
Same-action completely cuts off gas.
The present invention carries out multi-level gas by impervious barrier when gas tunnel 1 passes through coal seam 8 to tunnel support structure
Anti-seeping technology, it is to excavate the rapid injection air-tightness on the inside of gas tunnel 1 after gas tunnel 1 on coal seam 8 to mix that it, which applies order,
Solidifying soil sprays the gas sealant formation gas sealant coating 4 that coal mine roadway is used, foam is applied afterwards afterwards as just branch
Bed course 5 and gas division board, apply secondary lining again afterwards.In addition the beginning and end region in coal seam is passed through in gas tunnel 1,
Backbreak during constructing tunnel towards ring, form the deep cavity of a 1m thickness, 2m, recycle airtightness concrete to be backfilled, formed
The gas shading ring 2 of one ring, by gas isolation in coal seam, switchs to above-mentioned impervious barrier and applies afterwards.
To sum up, by means of the above-mentioned technical proposal of the present invention, multi-level gas antiseepage supporting, Ke Yiyou are on the one hand utilized
Effect prevent gas along tunnel ring permeate, on the other hand can prevent gas along tunnel axial direction spread so that by gas every
From in coal seam.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (3)
1. a kind of gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam, it is characterised in that in gas tunnel（1）Circumference
The gas shading ring as made from airtightness concrete is provided with head and end on the outside of face（2）, the gas tunnel（1）Circle
Impervious barrier is provided with the inside of side face, the impervious barrier includes the airtightness concrete layer set gradually from outside to inside（3）, gas it is close
Seal agent coating（4）, foam carpet（5）, gas isolation flaggy（6）With secondary lining layer（7）.
2. gas tunnel according to claim 1 passes through the multi-level leakage preventing structure applied behind coal seam, it is characterised in that institute
State gas shading ring（2）Radial width be 1m, axial depth is 2m.
3. a kind of gas tunnel passes through the multi-level leakage preventing structure construction method applied behind coal seam, it is characterised in that including following
Step：
S1 is in the coal seam of populated with gas（8）Upper excavation gas tunnel（1）, and in the gas tunnel（1）Original position and
End position outwards excavates a cavity along its periphery；
S2 backfills airtightness concrete gas shading ring is made in the cavity（2）；
S3 is in gas tunnel（1）Airtightness concrete is sprayed as first branch in inner side, to form airtightness concrete layer（3）；
S4 is in airtightness concrete layer（3）Inner side sprays gas sealant gas sealant coating is made（4）；
S5 is in the gas sealant coating（4）Inner side performs foam pad foam carpet is made（5）；
S6 is in the foam carpet（5）Inner side performs gas division board and isolates flaggy so that gas is made（6）；
S7 isolates flaggy in the gas（6）Inner side performs secondary lining secondary lining layer is made（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286594.0A CN107060807A (en) | 2017-04-27 | 2017-04-27 | Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286594.0A CN107060807A (en) | 2017-04-27 | 2017-04-27 | Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060807A true CN107060807A (en) | 2017-08-18 |
Family
ID=59605091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286594.0A Pending CN107060807A (en) | 2017-04-27 | 2017-04-27 | Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060807A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162545A (en) * | 2017-11-28 | 2018-06-15 | 安徽徽风新型合成材料有限公司 | Splash guard is isolated in a kind of polyethylene gas |
| CN109113758A (en) * | 2018-09-21 | 2019-01-01 | 中铁十六局集团有限公司 | A kind of the gas axial isolation band and its construction method of tunnel gas aggregation zone |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324139A (en) * | 1992-02-21 | 1994-06-28 | Ingenieure Mayreder, Kraus & Co. Consult Gesellschaft M.B.H. | Method for the construction of long tunnel with a lining |
| CN2372127Y (en) * | 1999-06-28 | 2000-04-05 | 周海东 | Tunnel sticking cloth rubber gas isolating board |
| CN201705364U (en) * | 2010-06-28 | 2011-01-12 | 中铁二十局集团有限公司 | Full-closed integral type lining structure of tunnel in coal-seam gob area |
| CN204572002U (en) * | 2015-04-02 | 2015-08-19 | 四川省交通运输厅公路规划勘察设计研究院 | For the tunnel structure of gas tunnel |
-
2017
- 2017-04-27 CN CN201710286594.0A patent/CN107060807A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324139A (en) * | 1992-02-21 | 1994-06-28 | Ingenieure Mayreder, Kraus & Co. Consult Gesellschaft M.B.H. | Method for the construction of long tunnel with a lining |
| CN2372127Y (en) * | 1999-06-28 | 2000-04-05 | 周海东 | Tunnel sticking cloth rubber gas isolating board |
| CN201705364U (en) * | 2010-06-28 | 2011-01-12 | 中铁二十局集团有限公司 | Full-closed integral type lining structure of tunnel in coal-seam gob area |
| CN204572002U (en) * | 2015-04-02 | 2015-08-19 | 四川省交通运输厅公路规划勘察设计研究院 | For the tunnel structure of gas tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 熊鲲: "瓦斯隧道施工安全风险管理及应用研究", <<西南交通大学硕士学位论文>> * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162545A (en) * | 2017-11-28 | 2018-06-15 | 安徽徽风新型合成材料有限公司 | Splash guard is isolated in a kind of polyethylene gas |
| CN109113758A (en) * | 2018-09-21 | 2019-01-01 | 中铁十六局集团有限公司 | A kind of the gas axial isolation band and its construction method of tunnel gas aggregation zone |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Dong Inventor after: Li Gengxu Inventor after: Yang Yanling Inventor after: Wang Jingbin Inventor after: Xie Guangming Inventor after: Gong Yanliang Inventor after: Li Yonggang Inventor after: Zheng Wenhua Inventor before: Li Gengxu Inventor before: Yang Yanling Inventor before: Wang Jingbin Inventor before: Xie Guangming Inventor before: Gong Yanliang Inventor before: Li Yonggang Inventor before: Zheng Wenhua |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170918 Address after: 101400 No. 2 Yingbin Middle Road, Huairou District, Beijing Applicant after: China Railway 16th Bureau Group Fourth Engineering Co., Ltd. Applicant after: China Railway Construction Engineering Bureau No.16 Group Corp., Ltd. Address before: 101400 No. 2 Yingbin Middle Road, Huairou District, Beijing Applicant before: China Railway 16th Bureau Group Fourth Engineering Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |