CN103557000B - Method for preventing gob-side entry rock burst through side-drawing filling - Google Patents

Method for preventing gob-side entry rock burst through side-drawing filling Download PDF

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Publication number
CN103557000B
CN103557000B CN201310549934.6A CN201310549934A CN103557000B CN 103557000 B CN103557000 B CN 103557000B CN 201310549934 A CN201310549934 A CN 201310549934A CN 103557000 B CN103557000 B CN 103557000B
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Prior art keywords
entry
tunnel
throwing
gob
filling
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Expired - Fee Related
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CN201310549934.6A
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Chinese (zh)
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CN103557000A (en
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姜福兴
朱斯陶
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Abstract

The invention discloses a method for preventing gob-side entry rock burst through side-drawing filling. The method comprises the following steps: additionally arranging a bracket for supporting behind a stope face bracket; constructing, exploding and drilling holes in entry sides behind the support bracket at certain intervals, wherein shallow holes are pre-cracking holes for loosening coal, and deep holes are throwing holes for throwing loosened coal into the entry; filling a part of the entry to form a pressure relief protection zone, and forming a wedged clamping anti-burst structure through top plates and bottom plates; tunneling in a previous mining surface filling entry following the mining surface gob-side entry, supporting by using a shed, carrying out guniting on the surface of the entry behind a tunneling head, and reinforcing and preventing and extinguishing fire in partial areas by taking backfill grouting measures. A novel anti-burst technical system for performing explosion, filling, in-situ tunneling and supporting behind the mining surface is established.

Description

Utilize the method for taking out side filling control gob side entry bump
Technical field
The invention belongs to Coal Mining Technology field, the method for side filling control gob side entry bump is taken out in the utilization particularly relating to a kind of colliery control gob side entry bump.
Background technology
The control problem of coal mine rock burst is still an international difficult problem, and especially deep-well is usually pressed with damaging impact along empty working face mining, causes serious personnel casualty accidents.Current Roadway along Gob in Deep Mine major part takes future small coal pillar to protect lane method, and mining Practice shows that the method exists the shortcomings such as resource recovery is low, deformation of the surrounding rock in tunnel amount is large, advance support is difficult, Controlling of Coal Outburst workload is large.As CN1664310A discloses a kind of control method for coal mine detached island coal pillar rock burst; first it arrange coal cutting roadway in the low stress area of gob-surrounded pillar; and stay 3.0 ~ 4.0 meters of protection coal pillar; unloading pressure by blasting hole is bored along empty crossheading every 3.0 ~ 4.0 meters upper and lower; hole depth is 3 times of coal seam thickness or span length; then upper and lower gate road side body superficial part is reinforced, finally to Bang Ti deep, tunnel physical modification.The mode complex process adopted, engineering quantity is huge, and release effect can not get ensureing.Therefore the control problem of Roadway along Gob in Deep Mine bump does not also solve at present at all, larger along the degree of danger in empty working face mining process.
Summary of the invention
In order to solve the problem, the object of the invention is to adopt future small coal pillar to protect the great deficiency that lane exists many Controlling of Coal Outburst problems for current gob side entry major part, utilize change top board structure and roadway layout position to propose a kind of utilization and take out the method helping filling control gob side entry bump.
Technical scheme of the present invention is: utilize the method for taking out side filling control gob side entry bump, specifically comprise the following steps:
The back supporting of step 1. work plane rear:
First when upper working face extraction, increase a support of the same type at back production support rear and carry out supporting, guarantee that the top board within the scope of the tunnel 10 ~ 15m of support rear is complete, and the needs that can meet ventilation, blow out;
Step 2. is arranged and is taken out side filling shot hole explosion:
According to face advanced distance, side portion's sidewall in tunnel, described support frame rear is beaten apart from base plate 1.0 ~ 1.3m place pre-splitting hole and throwing boring, described pre-splitting hole and the throwing spacing of wells are 1m, the degree of depth of described pre-splitting hole is 6 ~ 7m, side portion's sidewall in angle and tunnel is 40 ~ 45 °, borehole bottom location is 4 ~ 5m apart from the rib degree of depth, and sealed borehole length is 2.5 ~ 3m; Described throwing drilling depth is 11 ~ 12m, side portion's sidewall in angle and tunnel is 65 ~ 70 °, borehole bottom location is 8 ~ 10m apart from the rib degree of depth, sealed borehole length is 4 ~ 5m, outside hole, line adopts short-delay blasting, explosion extracts the side portion's coal body loosened out throwing in tunnel, pack portion tunnel, form unloading pressure protection band on a large scale, along with the advance of the face, top board is break convergence gradually, and base plate is heaved gradually under geostatic stress effect, roof and floor can form wedge shape clamping anti-washing structure, and in structure, coal body is substantially without going out possibility;
Step 3. gob side entry is arranged:
Subsequent duty face gob side entry tunnels in upper work plane stowboard position, and roof and floor is solid rock, and adopt shed shoring, whitewash to surface, tunnel in heading end rear, subregion can take grouting behind shaft or drift lining measure to carry out reinforcing and fire extinguishing.
The invention has the beneficial effects as follows: subsequent duty face gob side entry and former stowboard location overlap are arranged by the method, can weaken or eliminate gob side entry shock hazard.Tunnel filling is constructed in goaf, work plane rear, does not affect working face extraction, and minimizing coal column stays to be established, and reduction gob side entry deflection and advance support are bottled up greatly, and roof and floor can form wedge shape clamping anti-washing structure, substantially eliminates bump danger.
Accompanying drawing explanation
Fig. 1 is embodiments of the present invention schematic diagrames.
Fig. 2 is the layout schematic diagram of boring of the present invention.
Fig. 3 is the wedge shape clamping anti-washing structure schematic diagram that the present invention is formed.
In figure:
1, coal seam; 2, tunnel; 3, support; 4, support frame; 5, throwing boring; 6, shallow pre-splitting hole; 7, explosion produces fracture area; 8, coal body in throwing to tunnel; 9, main roof strata; 10, immediate roof rock stratum; 11, floor strata; 12, subsequent duty face; 13. goafs.
Detailed description of the invention
Below in conjunction with specific embodiment, specific embodiments of the invention are described further technical scheme of the present invention.
As Figure 1-3, the present invention utilizes the method for taking out side filling control gob side entry bump, specifically comprises the following steps:
1. in deep-well coal wall, tunnel 2 width is 4.5m, first increases a support of the same type at working face of coal seam 1 back production support 3 rear and carries out supporting, as support frame 4, guarantee that the top board 10 within the scope of the tunnel 210 ~ 15m of support rear is complete, and ventilation can be met, the needs such as to blow out.
2, if work plane average advance distance every day is 5m, to construct two blasting boreholes increasing the portion of side in tunnel, support 4 rear 2, aperture is 42mm, aperture is arranged in apart from base plate 1.2m place, pre-splitting hole 6 is pre-ceasma, quick-fried for coal body pine, drilling depth is 7m, side portion's sidewall in angle and tunnel is 45 °, borehole bottom location is 5m apart from the rib degree of depth, sealed borehole length is 3m, deep hole 5 is throwing hole, loosening side portion's coal body 8 is extracted out throwing in tunnel 2, pack portion tunnel, drilling depth is 11m, side portion's sidewall in angle and tunnel is 65 °, borehole bottom location is 10m apart from the rib degree of depth, sealed borehole length is 4m.
3, coal body soft broken in blast area 7, can form unloading pressure protection band on a large scale, along with the advance of the face, top board 9 break convergence gradually, base plate 11 is heaved gradually under geostatic stress effect, and top board 9, base plate 11 can form wedge shape clamping anti-washing structure, and in structure, coal body is substantially without going out possibility;
4, after work plane 1 exploitation terminates, tunnel 2 also filling is complete; Subsequent duty face 12 gob side entry tunnels in upper work plane stowboard 2 position, top board 9, base plate 11 are solid rock, adopt shed shoring, whitewash to surface, tunnel in heading end rear, subregion can take grouting behind shaft or drift lining measure to carry out reinforcing and fire extinguishing.

Claims (1)

1. utilize the method for taking out side filling control gob side entry bump, specifically comprise the following steps:
The back supporting of step 1. work plane rear:
First when upper working face extraction, increase a support frame at back production support rear and carry out supporting, guarantee that the top board within the scope of the tunnel 10 ~ 15m of support frame rear is complete, and the needs that can meet ventilation, blow out;
Step 2. is arranged and is taken out side filling shot hole explosion:
According to face advanced distance, side portion's sidewall in tunnel, described support frame rear is beaten apart from base plate 1.0 ~ 1.3m place pre-splitting hole and throwing boring, described pre-splitting hole and the throwing spacing of wells are 1m, the degree of depth of described pre-splitting hole is 6 ~ 7m, side portion's sidewall in angle and tunnel is 40 ~ 45 °, borehole bottom location is 4 ~ 5m apart from the rib degree of depth, and sealed borehole length is 2.5 ~ 3m; Described throwing drilling depth is 11 ~ 12m, side portion's sidewall in angle and tunnel is 65 ~ 70 °, borehole bottom location is 8 ~ 10m apart from the rib degree of depth, sealed borehole length is 4 ~ 5m, outside hole, line adopts short-delay blasting, explosion extracts the side portion's coal body loosened out throwing in tunnel, pack portion tunnel, form unloading pressure protection band on a large scale, along with the advance of the face, top board is break convergence gradually, and base plate is heaved gradually under geostatic stress effect, roof and floor can form wedge shape clamping anti-washing structure, and in structure, coal body is substantially without going out possibility;
Step 3. gob side entry is arranged:
Subsequent duty face gob side entry tunnels in upper work plane stowboard position, and roof and floor is solid rock, and adopt shed shoring, whitewash to surface, tunnel in heading end rear, subregion takes grouting behind shaft or drift lining measure to carry out reinforcing and fire extinguishing.
CN201310549934.6A 2013-11-07 2013-11-07 Method for preventing gob-side entry rock burst through side-drawing filling Expired - Fee Related CN103557000B (en)

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100266B (en) * 2014-08-04 2016-08-24 山东科技大学 The method of preventing and treating gob side entry bump
CN104675398B (en) * 2014-12-25 2016-07-06 大同煤矿集团有限责任公司 The method crossing total rock section in seam mining process
CN105863647B (en) * 2016-03-28 2017-11-21 辽宁工程技术大学 A kind of colliery high stress areas roadway head Controlling of Coal Outburst method
CN106194186A (en) * 2016-07-06 2016-12-07 中国矿业大学 The drilling release control method of coal wall stope drift active workings advance support section deformation
CN108661642B (en) * 2018-04-23 2019-08-06 北京科技大学 A kind of method of the nearly upright Bumping Pressure in Coal Layers of depth hole relieving shot prevention and treatment
CN111502662B (en) * 2020-04-28 2021-12-14 中煤能源研究院有限责任公司 Prevention and control method for deep pressure relief shallow part reinforcement of rock burst mine advanced coal body
CN111456758B (en) * 2020-06-03 2021-05-14 中国水利水电第十工程局有限公司 Double-shield TBM pipe back supporting method for dealing with rock burst
CN112483089A (en) * 2020-12-18 2021-03-12 山东科技大学 One-movement multi-static protection method for working face lateral suspended roof type rock burst
CN114352355B (en) * 2022-03-15 2022-06-24 中国矿业大学(北京) Deep mine rock burst control method

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SU798297A1 (en) * 1976-07-19 1981-01-23 Казахский Политехнический Институтим.B.И.Ленина Rock-breaking device
CN200999613Y (en) * 2007-01-24 2008-01-02 沈阳天安矿山机械科技有限公司 Roadside filling rear falsework
CN101117890A (en) * 2007-08-17 2008-02-06 淮南矿业(集团)有限责任公司 Method of support along spatially keeping lane
CN101713290A (en) * 2009-12-10 2010-05-26 天地科技股份有限公司 Method for clearing rock burst of full-mine laneway deep in mine
CN102852550A (en) * 2012-04-01 2013-01-02 中国矿业大学 Coal-pillar-free semi-normal-position goaf-side entry retaining method
CN103321677A (en) * 2013-06-04 2013-09-25 山东科技大学 Method for actively controlling motion of coal mine critical layers by using strip filling walls

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU798297A1 (en) * 1976-07-19 1981-01-23 Казахский Политехнический Институтим.B.И.Ленина Rock-breaking device
CN200999613Y (en) * 2007-01-24 2008-01-02 沈阳天安矿山机械科技有限公司 Roadside filling rear falsework
CN101117890A (en) * 2007-08-17 2008-02-06 淮南矿业(集团)有限责任公司 Method of support along spatially keeping lane
CN101713290A (en) * 2009-12-10 2010-05-26 天地科技股份有限公司 Method for clearing rock burst of full-mine laneway deep in mine
CN102852550A (en) * 2012-04-01 2013-01-02 中国矿业大学 Coal-pillar-free semi-normal-position goaf-side entry retaining method
CN103321677A (en) * 2013-06-04 2013-09-25 山东科技大学 Method for actively controlling motion of coal mine critical layers by using strip filling walls

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