CN105736040A - Method for pumping and exhausting gas of coal beds in front of parallel adit and main cave by means of parallel adit drilling construction - Google Patents
Method for pumping and exhausting gas of coal beds in front of parallel adit and main cave by means of parallel adit drilling construction Download PDFInfo
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- CN105736040A CN105736040A CN201610073190.9A CN201610073190A CN105736040A CN 105736040 A CN105736040 A CN 105736040A CN 201610073190 A CN201610073190 A CN 201610073190A CN 105736040 A CN105736040 A CN 105736040A
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- adit
- parallel
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- flat
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Abstract
The invention discloses a method for pumping and exhausting gas of coal beds in front of a parallel adit and a main cave by means of parallel adit drilling construction. The method comprises the steps that (1) construction of the parallel adit is conducted before construction of the main cave till an outburst elimination position in front of a coal measure stratum is reached; (2) a working chamber is formed in the side, close to the main cave, of the interior of the parallel adit; (3) punching is conducted in the parallel adit area of a parallel adit face and then pumping and exhausting are conducted in the parallel adit area of the parallel adit face, so that outburst elimination is completed; (4) pumping and exhausting holes in the main cave area are punched with the working chamber as the starting point during pumping and exhausting of the parallel adit; (5) after outburst elimination of the parallel adit succeeds, construction of the pumping and exhausting holes in the main cave area is completed and pumping and exhausting are conducted, checking of the outburst elimination effect of the parallel adit area and coal uncovering construction are conducted, tunneling of the parallel adit is recovered, and pumping and exhausting of the working chamber continue to be conducted; and (6) pumping and exhausting do not need to be conducted any more when the main cave continues to be excavated to the outburst elimination position of the main cave area, checking and coal uncovering construction are conducted directly, and tunneling of the main cave is recovered. By pumping and exhausting the gas of the coal beds within the ranges of the parallel adit and the main cave in advance by means of the parallel adit, the construction period is greatly shortened.
Description
Technical field
The invention belongs to tunnel boring technical field of construction, be specifically related to a kind of utilize flat combined layout construction drill pump drainage of leading to put down and lead and the method for each coal-bed gas in Zheng Dong front.
Background technology
At present, coal measure strata construction in tunnel is generally adopted, at face, this front of tunnel heading region is carried out the mode of gas extinction construction, and the face that namely positive hole peace is led needs to take a whole set of extinction measure respectively.Lead that to only have about 22 meters of rock pillars between positive hole alternate as it is shown in figure 1, flat, less than the outer minimum span of control sum of 14m of both excavation contour lines.Putting down and lead advanced just wide open digging, positive hole peace is led and is carried out pump drainage hole drilling operation and gas exhaust respectively, and the duration is very long, and efficiency of construction is low.
Summary of the invention
It is contemplated that utilize the flat feature leading advanced positive hole construction, using whole Tunnel Passing coal measure strata section as an overall region, in flat leading, carry out extinction measure, to save the duration, improve efficiency of construction.
For this, the technical solution adopted in the present invention is: a kind of utilize flat construction drill pump drainage of leading to put down and lead and the method for each coal-bed gas in Zheng Dong front, comprises the following steps:
(1) construct in flat positive hole in advance of leading, and puts down and leads the extinction position constructed to coal measure strata front, positive hole normal construction；
(2) work chamber is set in the flat side leading interior close positive hole；
(3) carry out putting down the first punching leading in region, rear pump drainage at flat face of leading, to complete extinction；
(4) utilize the flat time leading pump drainage, with the chamber that works for starting point, carry out the drilling operation in pump drainage hole, Zheng Dong region；
(5) flat lead extinction success and the construction of pump drainage hole, Zheng Dong region is complete and after starting pump drainage, carry out flat leading region extinction validity check, exposed coal construction, and recover the flat driving led；Meanwhile, the pump drainage of work chamber is proceeded；
(6) positive hole is continued when propelling is excavated to extinction position, Zheng Dong region without carrying out pump drainage, is made directly checking, exposed coal construction, and recovers the driving in positive hole.
It is preferably, described flat leads, the extinction position in positive hole is positioned at, 20～50 meters of coal measure strata front.
Beneficial effects of the present invention: utilize and flat lead advanced pump drainage and put down the coal-bed gas led with within the scope of positive hole, it is directly entered exposed coal construction according to checking situation when positive hole is advanced into coal measure strata front, without carrying out pump drainage, can effectively solve the gas extinction of big region to process, substantially reduce the construction period, and economy is high, it is adaptable to highway, railway large-bore gas tunnel gas exhaust control construction.
Accompanying drawing explanation
Fig. 1 be traditional utilize flat lead, schematic diagram is arranged in the boring of the independent drawing-off gas in positive hole.
Fig. 2 is the Construction Arrangement schematic diagram of the present invention.
Detailed description of the invention
By the examples below and in conjunction with accompanying drawing, the invention will be further described:
Utilize flat construction drill pump drainage of leading to put down and lead and the method for each coal-bed gas in Zheng Dong front as in figure 2 it is shown, a kind of, comprise the following steps:
(1) flat lead must positive hole construction in advance, flat lead can positive about about 500 meters of hole in advance, flat lead the extinction position constructed to coal measure strata front, positive hole normal construction；
(2) according to coal measure strata feature, flat lead the interior side near positive hole arrange work chamber, the particular location of work chamber and size bore according to executing it needs to be determined that；
(3) flat lead face carry out flat lead in region first punching, rear pump drainage, to complete gas extinction, flat lead interior exhaust pipe and stretch in coal measure strata, the approximate divergent shape distribution of exhaust pipe；
(4) utilizing the flat time leading pump drainage, with the chamber that works for starting point, carry out the drilling operation in pump drainage hole, Zheng Dong region, the extinction for positive hole is ready；
(5) flat lead extinction success and the construction of pump drainage hole, Zheng Dong region is complete and after starting pump drainage, carry out flat leading region extinction validity check, exposed coal construction, and recover the flat driving led；Meanwhile, proceeding the pump drainage of work chamber, its objective is to be the extinction of positive hole in advance, the exhaust pipe of work chamber stretches in coal measure strata, approximate divergent shape distribution；
(6) positive hole is continued when propelling is excavated to extinction position, Zheng Dong region without carrying out pump drainage, is made directly checking, exposed coal construction, and recovers the driving in positive hole.
Utilize flat advanced feature of leading, increase work chamber, concentrate carry out flat leading, Zheng Dong region gas exhaust drilling construction, reduce quantities, reduction of erection time.
Generally, flat lead, the extinction position in positive hole is positioned at, 20～50 meters of coal measure strata front.
Claims (2)
1. one kind utilizes flat construction drill pump drainage of leading to put down and lead and the method for each coal-bed gas in Zheng Dong front, it is characterised in that comprise the following steps:
(1) construct in flat positive hole in advance of leading, and puts down and leads the extinction position constructed to coal measure strata front, positive hole normal construction；
(2) work chamber is set in the flat side leading interior close positive hole；
(3) carry out putting down the first punching leading in region, rear pump drainage at flat face of leading, to complete extinction；
(4) utilize the flat time leading pump drainage, with the chamber that works for starting point, carry out the drilling operation in pump drainage hole, Zheng Dong region；
(5) flat lead extinction success and the construction of pump drainage hole, Zheng Dong region is complete and after starting pump drainage, carry out flat leading region extinction validity check, exposed coal construction, and recover the flat driving led；Meanwhile, the pump drainage of work chamber is proceeded；
(6) positive hole is continued when propelling is excavated to extinction position, Zheng Dong region without carrying out pump drainage, is made directly checking, exposed coal construction, and recovers the driving in positive hole.
2. the flat construction drill pump drainage of leading that utilizes described in claim 1 is put down and is led and the method for each coal-bed gas in Zheng Dong front, it is characterised in that: described flat lead, the extinction position in positive hole is positioned at, 20～50 meters of coal measure strata front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073190.9A CN105736040A (en) | 2016-02-02 | 2016-02-02 | Method for pumping and exhausting gas of coal beds in front of parallel adit and main cave by means of parallel adit drilling construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073190.9A CN105736040A (en) | 2016-02-02 | 2016-02-02 | Method for pumping and exhausting gas of coal beds in front of parallel adit and main cave by means of parallel adit drilling construction |
Publications (1)
| Publication Number | Publication Date |
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| CN105736040A true CN105736040A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610073190.9A Pending CN105736040A (en) | 2016-02-02 | 2016-02-02 | Method for pumping and exhausting gas of coal beds in front of parallel adit and main cave by means of parallel adit drilling construction |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091111A (en) * | 2017-04-18 | 2017-08-25 | 中交路桥华南工程有限公司 | The gas preprocess method in tunnel |
| CN107489443A (en) * | 2017-08-22 | 2017-12-19 | 西南交通大学 | Toxic and harmful gas constructing tunnel hydrogen sulfide mash gas harnessing method |
| CN110067591A (en) * | 2018-01-24 | 2019-07-30 | 中铁二院工程集团有限责任公司 | Tunnel and flat lead pass through coal seam construction gas drainage method |
| CN111396118A (en) * | 2020-03-19 | 2020-07-10 | 贵州盘江精煤股份有限公司 | Coal seam group rapid rock cross-cut coal uncovering outburst eliminating method |
| CN112196610A (en) * | 2020-09-23 | 2021-01-08 | 贵州大学 | Water drilling mining structure for eliminating gas outburst of inclined coal seam and mining method thereof |
| CN112324489A (en) * | 2020-12-08 | 2021-02-05 | 湖南科技大学 | Gas drainage drill hole arrangement method for large-section tunnel penetrating through coal seam with small included angle |
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| CN101514637A (en) * | 2009-04-02 | 2009-08-26 | 中铁二局股份有限公司 | Execution system of gas tunnel outburst prevention comprehensive measures |
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| CN202520369U (en) * | 2012-03-06 | 2012-11-07 | 中铁二十二局集团第五工程有限公司 | Gas outburst tunnel crosscut coal uncovering construction system |
| KR101508661B1 (en) * | 2014-09-26 | 2015-04-08 | 주식회사 리트코 | Tunnel air purification system mounted at the exit of the tunnel |
| CN204299612U (en) * | 2014-12-11 | 2015-04-29 | 中铁二十局集团第六工程有限公司 | Flat the leading in a kind of tunnel passes through coal seam construction drawing-off gas structure |
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- 2016-02-02 CN CN201610073190.9A patent/CN105736040A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091111A (en) * | 2017-04-18 | 2017-08-25 | 中交路桥华南工程有限公司 | The gas preprocess method in tunnel |
| CN107489443A (en) * | 2017-08-22 | 2017-12-19 | 西南交通大学 | Toxic and harmful gas constructing tunnel hydrogen sulfide mash gas harnessing method |
| CN110067591A (en) * | 2018-01-24 | 2019-07-30 | 中铁二院工程集团有限责任公司 | Tunnel and flat lead pass through coal seam construction gas drainage method |
| CN111396118A (en) * | 2020-03-19 | 2020-07-10 | 贵州盘江精煤股份有限公司 | Coal seam group rapid rock cross-cut coal uncovering outburst eliminating method |
| CN112196610A (en) * | 2020-09-23 | 2021-01-08 | 贵州大学 | Water drilling mining structure for eliminating gas outburst of inclined coal seam and mining method thereof |
| CN112324489A (en) * | 2020-12-08 | 2021-02-05 | 湖南科技大学 | Gas drainage drill hole arrangement method for large-section tunnel penetrating through coal seam with small included angle |
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Application publication date: 20160706 |