CN102425416B - Coal mine high stress area roadway driving face impact ground pressure control method - Google Patents

Coal mine high stress area roadway driving face impact ground pressure control method Download PDF

Info

Publication number
CN102425416B
CN102425416B CN 201110282841 CN201110282841A CN102425416B CN 102425416 B CN102425416 B CN 102425416B CN 201110282841 CN201110282841 CN 201110282841 CN 201110282841 A CN201110282841 A CN 201110282841A CN 102425416 B CN102425416 B CN 102425416B
Authority
CN
China
Prior art keywords
boring
pressure relief
hole
tunnel
release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN 201110282841
Other languages
Chinese (zh)
Other versions
CN102425416A (en
Inventor
潘立友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN 201110282841 priority Critical patent/CN102425416B/en
Publication of CN102425416A publication Critical patent/CN102425416A/en
Application granted granted Critical
Publication of CN102425416B publication Critical patent/CN102425416B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a coal mine high stress area roadway driving face impact ground pressure control method, which comprises the following steps that: a control key area of the impact ground pressure is firstly determined; then large-diameter drilling pressure relief is performed for two times on a roadway working face of the control key area along the direction of a roadway; conventional deep hole blasting pressure relief is performed, and driving is performed while the pressure is released so as to thoroughly release the pressure. Deep hole drilling is performend in the high stress coalbody, so on one hand, fine distribution of the impact danger is obtained; and on the other hand, the primary pressure relief effect can be realized, the head-on stress distribution can be changed, the impact energy can be greatly released, and the destructive impact danger can be fundamentally reduced.

Description

Colliery high stress areas roadway head bump is prevented and treated method
Technical field
The invention belongs to coal mine roadway driving technology field.
Background technology
Increase along with the pit mining degree of depth, the expansion of limit of mining, fringe conditions complicated of exploitation, the bump that occurs in the dynamic stress field that primary stress field, exploitation form is more and more serious, it is unusual etc. that the place ahead of meeting head on of tunnelling process usually is attended by structure, coal rock layer textural anomaly, gas, therefore, the control of deep-well complex structure heading boring head bump is the technical barrier that needs solution at present.Occur in the damaging impact ground of meeting head in the tunnel and press cause dangerous constantly to increase, the control of this class bump does not at present have the essence difference with the conventional method of preventing and treating, and mainly takes to separate the danger measure, comprises measures such as boring release, common unloading pressure by blasting.Along with mining depth increases, these conventional measures are difficult to reach the purpose that reduces the danger of burst degree in itself, simultaneously owing to there is concealed danger, its control difficulty is difficult unusually, and the release scope that present means form is little, causes heavily stressed transfer not in place, energy discharges insufficient, bump is difficult to control, and the bigger energy release of rank takes place easily, causes great loss.When meet head on to have the unusual region of high stress in the tunnel, when implementing conventional drilling and blasting and boring release, creep into just very difficultly, it is relatively poor to separate the danger effect.Therefore the bump of meeting head on of the tunnel under heavily stressed, the big buried depth condition controls to and does not also fundamentally reach the degree of control fully so far, invents the meet head on technical method of (being driving face) bump of a kind of employing diffusion principle control tunnel and has great realistic meaning.
Goal of the invention
The objective of the invention is to prevent and treat problem at present deep tunnel boring head bump, the bump that proposes a kind of impact energy " diffusion gradually " release is prevented and treated method.
Technical scheme of the present invention is:
The first step: the control key area of determining bump
At the digging laneway work plane with the dangerous coal seam of bump, by analogy, face analysis, the judgement of stope bump presentation attributes mutually, adopting the deep drilling means that the scene is carried out in the coal seam in driving the place ahead simultaneously detects, obtain the taxis zone of danger of burst, as the meet head on control key area of bump of tunnelling;
Second step: large diameter, deep borehole destroys the coal seam, and " expansion " goes out release " band "
(1) at the tunnel work plane of preventing and treating the key area, move towards along the tunnel, carry out the large diameter borehole release first time, bore diameter is more than 80mm, bore arrangement mode is that in tunnel work plane layout one gang drill hole, a gang drill hole is divided into three groups, every group of three borings, middle one group of boring is crept into along the tunnel trend, and two groups of borings on both sides are crept into to oblique the place ahead respectively, and boring direction and section angle are the 55-65 degree, boring in centre of every group of boring is main pressure relief vent, the boring of both sides is time pressure relief vent, three main pressure relief vents of subdrilling, and hole depth is greater than 20m, bore time pressure relief vent then, the inferior pressure relief vent degree of depth is less than main pressure relief vent hole depth 5m; The preliminary release in boring back, and beginning tunnelling;
(2) behind the tunnelling 5m, move towards large diameter borehole release for the second time again along the tunnel, bore diameter is more than 80mm, bore arrangement mode is, arrange a gang drill hole at the tunnel work plane, one gang drill hole is divided into three groups, every group of three borings, middle one group of boring continues to creep into forward in former boring for the first time, and two groups of borings on both sides are crept into along the tunnel trend respectively, boring in centre of every group of boring is main pressure relief vent, the boring of both sides is time pressure relief vent, three main pressure relief vents of subdrilling, and hole depth is greater than 20m, bore time pressure relief vent then, the inferior pressure relief vent degree of depth is less than main pressure relief vent hole depth 5m; The preliminary release in boring back, and beginning tunnelling; The further release of boring back, and beginning tunnelling;
The 3rd step: conventional deep hole blasting release
Behind the tunnelling 5m, help and carry out conventional deep hole blasting release at two on the driving face and behind the driving face; During explosion, at first meet head on to arrange 3 unloading pressure by blasting holes in the tunnel, help to arrange 4-6 unloading pressure by blasting hole two, the diameter 42mm in unloading pressure by blasting hole, hole depth 6.0-7.0m is apart from roadway floor 1.0~1.3m, pitch of holes 4-5m, 0~3 ° at the elevation angle, loaded length 2.0-3.0m evenly arranges 2-3 detonator in parallel, the line of connecting outside the hole in the hole, per 5 hole once detonations carry out final release; Continue driving;
Tunnel according to the monitoring of above-mentioned steps limit, limit release, limit during the driving.
Good effect of the present invention is: 1, by carry out dark " spy " hole in high-stress coal, obtain the trickle distribution of shock hazard on the one hand, play preliminary release effect on the other hand.2, take deep major diameter " expansion " hole, coal body is destroyed, produce big release " band ", changed the stress distribution of meeting head on, discharge impact energy significantly.3, take overlapping major diameter release technology, reservation buffer strip, ensured the safety during the zone of meeting head on is tunneled.4, take to meet head on and way of escape blasting technique, the energy gradation is discharged, fundamentally reduce damaging impact danger.
Description of drawings
Below in conjunction with the description of drawings embodiments of the invention.
Fig. 1 is that the preliminary pressure relief vent of the present invention is arranged schematic diagram;
Fig. 2 is the present invention's pressure relief vent layout schematic diagram for the second time
Fig. 3 is the conventional deep hole blasting pressure relief vent of the present invention schematic diagram.
The specific embodiment
As Figure 1-3, colliery of the present invention high stress areas roadway head bump is prevented and treated the concrete steps of method and is:
The first step: the control key area of determining bump
At the digging laneway work plane with the dangerous coal seam of bump, by analogy, face analysis, the judgement of stope bump presentation attributes mutually, adopting the deep drilling means that the scene is carried out in the coal seam in driving the place ahead simultaneously detects, obtain the taxis zone of danger of burst, as the meet head on control key area of bump of tunnelling;
Second step: large diameter, deep borehole destroys the coal seam, and " expansion " goes out release " band "
(1) as shown in Figure 1, tunnel work plane in the control key area, move towards along the tunnel, carry out the large diameter borehole release first time, bore diameter is more than 80mm, and bore arrangement mode is, arrange a gang drill hole at the tunnel work plane, one gang drill hole is divided into three groups, every group of three borings, and middle one group of boring is crept into along the tunnel trend, two groups of borings on both sides are crept into to oblique the place ahead respectively, boring direction and section angle are the 55-65 degree, and boring in centre of every group of boring is main pressure relief vent, and the boring of both sides is time pressure relief vent, three main pressure relief vents of subdrilling, hole depth is bored time pressure relief vent then greater than 20m, and the inferior pressure relief vent degree of depth is less than main pressure relief vent hole depth 5m; The preliminary release in boring back, and beginning tunnelling;
(2) as shown in Figure 2, behind the tunnelling 5m, move towards large diameter borehole release for the second time again along the tunnel, bore diameter is more than 80mm, bore arrangement mode is, arrange a gang drill hole at the tunnel work plane, a gang drill hole is divided into three groups, every group of three borings, middle one group of boring continues to creep into forward in former boring for the first time, two groups of borings on both sides are crept into along the tunnel trend respectively, and boring in centre of every group of boring is main pressure relief vent, and the boring of both sides is time pressure relief vent, three main pressure relief vents of subdrilling, hole depth is bored time pressure relief vent then greater than 20m, and the inferior pressure relief vent degree of depth is less than main pressure relief vent hole depth 5m; The preliminary release in boring back, and beginning tunnelling; The further release of boring back, and beginning tunnelling;
The 3rd step: conventional deep hole blasting release
As shown in Figure 3, behind the tunnelling 5m, help and carry out conventional deep hole blasting release at two on the driving face and behind the driving face; At first meet head on to arrange 3 unloading pressure by blasting holes in the tunnel, help to arrange 4-6 unloading pressure by blasting hole two, the diameter 42mm in unloading pressure by blasting hole, hole depth 6.0-7.0m, apart from roadway floor 1.0~1.3m, pitch of holes 4-5m, 0~3 ° at the elevation angle, loaded length 2.0-3.0m, evenly arrange 2-3 detonator in parallel in the hole, the line of connecting outside the hole, per 5 hole once detonations carry out final release; Continue driving.
Tunnel according to the monitoring of above-mentioned steps limit, limit release, limit during the driving.

Claims (1)

1. a colliery high stress areas roadway head bump is prevented and treated method, it is characterized in that step is as follows:
The first step: the control key area of determining bump
At the digging laneway work plane with the dangerous coal seam of bump, by analogy, face analysis, the judgement of stope bump presentation attributes mutually, adopting the deep drilling means that the scene is carried out in the coal seam in driving the place ahead simultaneously detects, obtain the taxis zone of danger of burst, as the meet head on control key area of bump of tunnelling;
Second step: large diameter, deep borehole destroys the coal seam, expands to unload pressure zone
(1) at the tunnel work plane of preventing and treating the key area, move towards along the tunnel, carry out the large diameter borehole release first time, bore diameter is more than 80mm, bore arrangement mode is that in tunnel work plane layout one gang drill hole, a gang drill hole is divided into three groups, every group of three borings, middle one group of boring is crept into along the tunnel trend, and two groups of borings on both sides are crept into to oblique the place ahead respectively, and boring direction and section angle are the 55-65 degree, boring in centre of every group of boring is main pressure relief vent, the boring of both sides is time pressure relief vent, three main pressure relief vents of subdrilling, and hole depth is greater than 20m, bore time pressure relief vent then, the inferior pressure relief vent degree of depth is less than main pressure relief vent hole depth 5m; The preliminary release in boring back, and beginning tunnelling;
(2) behind the tunnelling 5m, move towards large diameter borehole release for the second time again along the tunnel, bore diameter is more than 80mm, bore arrangement mode is, arrange a gang drill hole at the tunnel work plane, one gang drill hole is divided into three groups, every group of three borings, middle one group of boring continues to creep into forward in former boring for the first time, and two groups of borings on both sides are crept into along the tunnel trend respectively, boring in centre of every group of boring is main pressure relief vent, the boring of both sides is time pressure relief vent, three main pressure relief vents of subdrilling, and hole depth is greater than 20m, bore time pressure relief vent then, the inferior pressure relief vent degree of depth is less than main pressure relief vent hole depth 5m; The preliminary release in boring back, and beginning tunnelling;
The 3rd step: conventional deep hole blasting release
Behind the tunnelling 5m, help and carry out conventional deep hole blasting release at two on the driving face and behind the driving face; During explosion, at first meet head on to arrange 3 unloading pressure by blasting holes in the tunnel, help to arrange 4-6 unloading pressure by blasting hole two, the diameter 42mm in unloading pressure by blasting hole, hole depth 6.0-7.0m is apart from roadway floor 1.0~1.3m, pitch of holes 4-5m, 0~3 ° at the elevation angle, loaded length 2.0-3.0m evenly arranges 2-3 detonator in parallel, the line of connecting outside the hole in the hole, per 5 hole once detonations carry out final release; Continue driving;
Tunnel according to the monitoring of above-mentioned steps limit, limit release, limit during the driving.
CN 201110282841 2011-09-12 2011-09-12 Coal mine high stress area roadway driving face impact ground pressure control method Active CN102425416B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110282841 CN102425416B (en) 2011-09-12 2011-09-12 Coal mine high stress area roadway driving face impact ground pressure control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110282841 CN102425416B (en) 2011-09-12 2011-09-12 Coal mine high stress area roadway driving face impact ground pressure control method

Publications (2)

Publication Number Publication Date
CN102425416A CN102425416A (en) 2012-04-25
CN102425416B true CN102425416B (en) 2013-09-25

Family

ID=45959441

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110282841 Active CN102425416B (en) 2011-09-12 2011-09-12 Coal mine high stress area roadway driving face impact ground pressure control method

Country Status (1)

Country Link
CN (1) CN102425416B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216265B (en) * 2013-04-24 2015-08-05 安徽理工大学 A kind of high stress tunnel surrouding rock deformation control method
CN103397883B (en) * 2013-08-21 2016-01-20 大同煤矿集团有限责任公司 Mutil-coal seam mining Rock Burst method for integrated control
CN103557755B (en) * 2013-11-04 2015-09-09 中国水电顾问集团华东勘测设计研究院有限公司 Deep-lying tunnel rockburst control effect evaluation method
CN103726872B (en) * 2013-12-30 2016-01-13 北京科技大学 A kind of high mine pressure roadway of coal mine oriented solution danger method
CN104564086B (en) * 2014-12-29 2016-08-24 中国矿业大学 A kind of big lane regional stress field optimization method
CN104989405B (en) * 2015-06-12 2017-09-29 北京科技大学 Mining steeply dipping coal seam bump orients prevention and controls
CN105201510B (en) * 2015-10-27 2018-02-06 山东科技大学 A kind of creepage type bump preventing control method
CN105626070B (en) * 2015-12-14 2018-01-16 辽宁工程技术大学 A kind of deep hole demolition uploading pressure Controlling of Coal Outburst method
CN105627846B (en) * 2016-03-10 2017-09-22 安徽理工大学 A kind of method that deephole bench blasting prevents and treats bump
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
CN106285674A (en) * 2016-10-20 2017-01-04 山东科技大学 The method of impact soft seam tunnel with meeting head on release pressure energy
CN107013214B (en) * 2017-05-12 2018-12-28 中国矿业大学(北京) A kind of solution danger method of bump
CN108386192A (en) * 2018-01-31 2018-08-10 中国矿业大学 A kind of method of active Enhanced support and active release prevention bump
CN108594295B (en) * 2018-05-31 2019-12-17 天地科技股份有限公司 Method for evaluating coal bed blasting pressure relief effect
CN109915141A (en) * 2019-04-13 2019-06-21 山东科技大学 The control method of not wide protection pillar mining roadway bump
CN109915142A (en) * 2019-04-13 2019-06-21 山东科技大学 A kind of major fault fringe region Controlling of Coal Outburst method
CN109915143A (en) * 2019-04-13 2019-06-21 山东科技大学 The control method of not wide protection pillar working face bump
CN109915140A (en) * 2019-04-13 2019-06-21 山东科技大学 Press control method to a kind of irregular gob-surrounded pillar roadway bump
CN110080768B (en) * 2019-05-01 2021-06-29 山东科技大学 Coal mine tunnel large-scale rock burst prevention and control method
CN111365077B (en) * 2020-03-19 2021-02-12 中国矿业大学(北京) Pressure relief and monitoring method for continuous large deformation of deep roadway coal side

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1664310A (en) * 2005-02-28 2005-09-07 清华大学 Control method for coal mine detached island coal pillar rock burst
CN101285384A (en) * 2008-06-05 2008-10-15 昆明理工大学 Large diameter, deep borehole and non undercutting mining method
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
CN101737050A (en) * 2008-11-25 2010-06-16 宝钢集团上海梅山有限公司 Deep hole arranging method in mining

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1664310A (en) * 2005-02-28 2005-09-07 清华大学 Control method for coal mine detached island coal pillar rock burst
CN101285384A (en) * 2008-06-05 2008-10-15 昆明理工大学 Large diameter, deep borehole and non undercutting mining method
CN101737050A (en) * 2008-11-25 2010-06-16 宝钢集团上海梅山有限公司 Deep hole arranging method in mining
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
掘进中预防矿山冲击地压发生的措施;陈仲宣;《工业安全与防尘》;19970731(第7期);第9-11页 *
陈仲宣.掘进中预防矿山冲击地压发生的措施.《工业安全与防尘》.1997,(第7期),第9-11页.

Also Published As

Publication number Publication date
CN102425416A (en) 2012-04-25

Similar Documents

Publication Publication Date Title
CN102425416B (en) Coal mine high stress area roadway driving face impact ground pressure control method
CN102296958A (en) Method for preventing rock burst by artificial space defect body
CN102678120B (en) Method for releasing pressure and removing danger of rock burst
CN102518436B (en) Method for controlling tectonic rock burst in coal mine tunneling
CN104100266B (en) The method of preventing and treating gob side entry bump
CN103821516B (en) The method of secondary release preventing and treating bump
CN102425418A (en) Method for controlling rock burst in artificial defect body of coal mine structural area
CN102383828A (en) Refection reducing and outburst eliminating method for deep-hole hydraulic fracture driving gas shallow hole extraction
CN104790954A (en) Roadside packing gob-side entry retaining top-cutting explosion pressure relief method
CN102296957B (en) Method of transfixing and distressing with one explosion during tunneling of seam roadway with rock burst
CN102518471A (en) Rock burst energy releasing method of roadway of high stress area in coal mine
CN102322267A (en) Method for preventing and controlling rock burst in soft rock of deep well
CN101666241A (en) Integrated drilling-blasting-pressurizing-drawing protrusion preventing method for regional gas control
CN107304676A (en) A kind of prevention and controls for leaving bump under coal column
CN105937395A (en) Fast and highly-efficient tunneling method for large section of hard-rock tunnel in coal mine by combination of fully-mechanized tunneling and blasting driving
CN109209472B (en) Punching, blasting and water injection mutual coupling coal seam pressure relief and outburst prevention method
CN105627846A (en) Method for preventing and treating rock burst through deep-hole pressure release blasting
CN110374599A (en) A kind of coal petrography drills the method for forming tunnel erosion control weak structure repeatedly
CN106930766A (en) Great burying TBM construction tunnel rock burst processing structures
CN106285674A (en) The method of impact soft seam tunnel with meeting head on release pressure energy
CN106401588A (en) Method for preventing and treating rock burst during exploiting of working face in fault zone
CN109209495A (en) The stopping of a kind of fully-mechanized mining working cutting top unloading pressure protection method on the face of adopting
CN106246184A (en) A kind of recovery method of half-edge coal seam
CN110067557B (en) Pressure relief method for fully mechanized caving mining bottom coal of steeply inclined coal seam
CN206592127U (en) Great burying TBM construction tunnel rock burst processing structures

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant