CN102425418A - Method for controlling rock burst in artificial defect body of coal mine structural area - Google Patents
Method for controlling rock burst in artificial defect body of coal mine structural area Download PDFInfo
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- CN102425418A CN102425418A CN2011103786686A CN201110378668A CN102425418A CN 102425418 A CN102425418 A CN 102425418A CN 2011103786686 A CN2011103786686 A CN 2011103786686A CN 201110378668 A CN201110378668 A CN 201110378668A CN 102425418 A CN102425418 A CN 102425418A
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Abstract
The invention discloses a method for controlling rock burst in artificial defect body of coal mine structural area, which comprises the following steps that: during the mining process of an impact ground pressure dangerous coal layer, a structural high stress area is determined, then a defect space is manufactured in the structural high stress area, an energy cumulative terrane of a coal layer roof is cut off, the structural stress distribution is changed, the stress is shifted towards the upper part and is away from a mining field, and the energy is greatly released, so the structural impact danger structural high stress area is fundamentally reduced. Due to the adoption of the method, local energy of the deep mining structural area can be adequately released, and the control problem of the rock burst can be solved.
Description
Technical field
The invention belongs to the coal mining technical field.
Background technology
China's coal-mine belongs to complex structure, mine coal seam is composed the characteristics big, that coal petrography architectural difference property is big that change of depositing.Along with the increase of the pit mining degree of depth, the fringe conditions of exploitation complicated, the bump that geological structure causes is more outstanding.A large amount of bump statistics show that the inferior one-level in coalfield is the zone that tectonic stress is easy to concentrate to arch structure (band) axial region, and the possibility that bump (dynamic pressure) takes place is maximum.It is more and more serious with the bump of the dynamic stress field of exploitation formation to occur in structure realm; Particularly adopt dark increase; Strengthened the exergonic difficulty of structure type bump, structure realm tunnelling process often is attended by big coal big gun, in synclinal axis portion; Energy discharges great efforts, the serious disaster that causes.Therefore, bump control in deep-well complex structure coal seam is the technical barrier that needs solution at present.Occurring in dangerous that the structure type bump of structure realm causes constantly increases, and the control of this type 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 drilling and blasting release, boring release.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 are the concealed characteristics of structure; Its control difficulty strengthens, and present means are poor to the releasing effect of tectonic stress, the release scope is little, cause 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 there was anomalous structure with the dynamic region of high stress in stope, when implementing conventional drilling and blasting with the boring release, it was relatively poor to separate the danger effect.Therefore the bump under tectonic province, heavily stressed, the big buried depth condition controls to and does not also fundamentally reach the degree of control fully so far, invents a kind of technical method of engineering defect principle control structure realm bump that adopts and has great realistic meaning.
Goal of the invention
The objective of the invention is to discharge insufficient, as can not to control bump problem, proposed a kind of method of artifacts body control bump to the local energy of present deep mining structure realm.
Technical scheme of the present invention is:
The first step: delineation structure high stress areas
In the mining process in the dangerous coal seam of bump, through analysis, the judgement of analogy, tunnel bump presentation attributes, simultaneously based on tunneling the structure spread situation that occurs; Adopt the crustal stress practical observation method; Carry out crustal stress observation, obtain the crustal stress size and Orientation, utilize monitoring means such as drilling cuttings method to carry out scene detection then; Mark off the structure high stress areas, as the control key area of bump;
Second step: artificial large space defect body
After work plane forms mining system, in the structure high stress areas, tunnel a release tunnel of running through to construct high stress areas, the release drift section amasss at 6-8m
2The release tunnelling is carried out the base plate deep hole blasting from the way of escape of meeting head on after accomplishing, and cuts off roof strata, impels board structure stress fully to discharge; Driving is taked to blow out in the release tunnel, simple and easy supporting, limit monitoring, limit release, limit driving.
Good effect of the present invention is: 1. through in the structure high stress areas, making big defective space, cut off the cumulative rock stratum of roof, changed the tectonic stress distribution; Stress shifts to top; Away from stope, energy discharges significantly, fundamentally reduces the structure shock hazard.2. carry out explosion in meeting head on the whole process of the tunnel way of escape from the tunnel, vibrations, destroy coal rock layer, stope top is the soft formation structure, cranny development, and energy is fully discharged.3. it is wide that big defective causes energy to discharge scope, and roadway workface is played protective action, and the staff in tunnel, the work plane is played isolation, protective effect.
Description of drawings
Fig. 1 is certain work plane plane and deathtrap floor map;
Fig. 2 is an artifacts body section sketch map.
The specific embodiment
Below in conjunction with description of drawings enforcement of the present invention.
The first step: in the mining process in the dangerous coal seam of bump, through analysis, the judgement of analogy, tunnel bump presentation attributes, the structure spread situation that occurs according to driving simultaneously; Adopt the geostatic stress practical observation method; Carry out geostatic stress observation, obtain the geostatic stress size and Orientation, utilize monitoring means such as drilling cuttings method to carry out scene detection then; Mark off the structure high stress areas, as the control key area of bump; As shown in Figure 1.
Second step: after work plane forms mining system; In the structure high stress areas; For example a relative softer coal rock layer is selected in layer position, the top of synclinal axis portion or this layer position, apart from the coal seam apart from generally at 15-20m; Tunnel a release tunnel of running through to construct high stress areas, the release drift section amasss at 6-8m
2The release tunnelling is carried out the base plate deep hole blasting from the way of escape of meeting head on after accomplishing, and destroys floor strata, cuts off roof strata, impels board structure stress fully to discharge; Driving is taked to blow out in the release tunnel, simple and easy supporting, limit monitoring, limit release, limit driving.See shown in Figure 2.
Claims (1)
1. the method for a colliery structure realm artifacts body control bump is characterized in that step is following:
The first step: delineation structure high stress areas
In the mining process in the dangerous coal seam of bump, through the analysis and the judgement of analogy, tunnel bump presentation attributes, simultaneously based on tunneling the structure spread situation that occurs; Adopt the crustal stress practical observation method; Carry out crustal stress observation, obtain the crustal stress size and Orientation, utilize drilling cuttings method monitoring means to carry out the scene then and detect; Mark off the structure high stress areas, as the control key area of bump;
Second step: artificial large space defect body
After work plane forms mining system, in the structure high stress areas, tunnel a release tunnel of running through to construct high stress areas, the release drift section amasss at 6-8m
2The release tunnelling is carried out the base plate deep hole blasting from the way of escape of meeting head on after accomplishing, and cuts off roof strata, impels board structure stress fully to discharge; Driving is taked to blow out in the release tunnel, simple and easy supporting, limit monitoring, limit release, limit driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103786686A CN102425418A (en) | 2011-11-14 | 2011-11-14 | Method for controlling rock burst in artificial defect body of coal mine structural area |
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| CN2011103786686A CN102425418A (en) | 2011-11-14 | 2011-11-14 | Method for controlling rock burst in artificial defect body of coal mine structural area |
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| CN102425418A true CN102425418A (en) | 2012-04-25 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457459A (en) * | 2014-10-20 | 2015-03-25 | 西安科技大学 | Coal mine roof deep hole roof breaking charging structure and detonation method |
| CN104564086A (en) * | 2014-12-29 | 2015-04-29 | 中国矿业大学 | Optimization method for stress field of area of main roadway |
| CN106285680A (en) * | 2016-10-20 | 2017-01-04 | 山东科技大学 | Impact soft seam tunnel way of escape Controlling of Coal Outburst method |
| CN106368705A (en) * | 2016-10-20 | 2017-02-01 | 山东科技大学 | Method for controlling rock burst during roadway tunneling in fault fracture zone |
| CN106437711A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Coal seam impact type mine earthquake prevention and control method |
| CN106499393A (en) * | 2016-10-20 | 2017-03-15 | 山东科技大学 | Compound seam tunnel way of escape Controlling of Coal Outburst method |
| CN106522949A (en) * | 2016-10-20 | 2017-03-22 | 山东科技大学 | Composite coal seam tunnel head-on impact ground pressure control method |
| 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 |
| CN110878694A (en) * | 2019-12-13 | 2020-03-13 | 山东科技大学 | Protection method for mining-influenced impact dangerous roadway during overhaul |
| CN110924945A (en) * | 2019-12-13 | 2020-03-27 | 山东科技大学 | Safe working method under condition of lateral suspended roof rock burst |
| CN112483096A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for preventing and controlling rock burst of stope with syncline shaft part |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457459A (en) * | 2014-10-20 | 2015-03-25 | 西安科技大学 | Coal mine roof deep hole roof breaking charging structure and detonation method |
| CN104564086A (en) * | 2014-12-29 | 2015-04-29 | 中国矿业大学 | Optimization method for stress field of area of main roadway |
| WO2016107434A1 (en) * | 2014-12-29 | 2016-07-07 | 中国矿业大学 | Regional stress field optimization method for main haulageway |
| CN104564086B (en) * | 2014-12-29 | 2016-08-24 | 中国矿业大学 | A kind of big lane regional stress field optimization method |
| CN106285680A (en) * | 2016-10-20 | 2017-01-04 | 山东科技大学 | Impact soft seam tunnel way of escape Controlling of Coal Outburst method |
| CN106368705A (en) * | 2016-10-20 | 2017-02-01 | 山东科技大学 | Method for controlling rock burst during roadway tunneling in fault fracture zone |
| CN106437711A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Coal seam impact type mine earthquake prevention and control method |
| CN106499393A (en) * | 2016-10-20 | 2017-03-15 | 山东科技大学 | Compound seam tunnel way of escape Controlling of Coal Outburst method |
| CN106522949A (en) * | 2016-10-20 | 2017-03-22 | 山东科技大学 | Composite coal seam tunnel head-on impact ground pressure control method |
| 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 |
| CN110878694A (en) * | 2019-12-13 | 2020-03-13 | 山东科技大学 | Protection method for mining-influenced impact dangerous roadway during overhaul |
| CN110924945A (en) * | 2019-12-13 | 2020-03-27 | 山东科技大学 | Safe working method under condition of lateral suspended roof rock burst |
| CN112483096A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for preventing and controlling rock burst of stope with syncline shaft part |
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Application publication date: 20120425 |