CN102383728A - Coal mine rockburst defect segmentation and control method - Google Patents
Coal mine rockburst defect segmentation and control method Download PDFInfo
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- CN102383728A CN102383728A CN2011102829129A CN201110282912A CN102383728A CN 102383728 A CN102383728 A CN 102383728A CN 2011102829129 A CN2011102829129 A CN 2011102829129A CN 201110282912 A CN201110282912 A CN 201110282912A CN 102383728 A CN102383728 A CN 102383728A
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Abstract
The invention discloses a coal mine rockburst defect segmentation and control method comprising the following steps: defining a high-stress area as the key rockburst prevention area; excavating two rockburst releasing tunnels in the tunnel of the high-stress area along the coal bed in the vertical direction of the tunnel; carrying out rockburst releasing blasting to coal pillars between the two rockburst releasing tunnels after finishing excavating the two rockburst releasing tunnels; filling waste rock into the two rockburst releasing tunnels; and solidifying the filled waste rock by using cement slurry. In the invention, because the high-stress coal is blasted at intervals, the coal pillars are destroyed, a large destruction belt is created, the local stress distribution is changed, and a rockburst-free isolation belt is created manually, the energy release scope is reduced, the amount of energy released one time is controlled in an allowed scope, and the danger of destructive rockburst is reduced radically.
Description
Technical field
The invention belongs to the coal mining technical field.
Background technology
Got into since 21st century; Comprise China; South Africa, Canada, Ukraine, Germany, Australia, Poland, Russia, the U.S., etc. a plurality of countries and regions the bump phenomenon has appearred in coal mining, caused the loss of huge personnel and equipment.Along with the increase of the pit mining degree of depth, the expansion of limit of mining, the fringe conditions of exploitation complicated, the control of bump is more and more serious, has become a generally acknowledged world-class difficult problem.The damaging impact ground of deep-well bump seam mining presses cause dangerous constantly to increase; The control of deep-well bump does not at present have the essence difference with the conventional method of preventing and treating; Mainly take to separate the danger measure, comprise measures such as drilling and blasting release, boring release, top board processing.Along with mining depth increases; These conventional measures are difficult to reach the purpose that reduces the danger of burst degree in itself, owing to there are shortcomings such as the release scope of operating difficulties, manufacturing is little, cause heavily stressed transfer not in place simultaneously; Energy discharges insufficient; Bump is difficult to control, and the bigger energy release of rank takes place easily, causes great loss.When there is the unusual region of high stress in stope, when implementing conventional drilling and blasting, just creep into very difficulty with the boring release, it is relatively poor to separate the danger effect.Therefore the bump under big buried depth (greater than 800 meters) heavily stressed (greater than the 20Mp) condition controls to and does not also fundamentally reach the degree of control fully so far, invents the technical method that a kind of employing cuts apart principle control bump coal mine safety management is significant.
Summary of the invention
The objective of the invention is to control the problem of bump, proposes a kind of the impact energy effective ways of release gradually that " break the whole up into parts " to the present local solution danger measure that has high stress areas more than 800 meters in the deep mining bump control.
Technical scheme of the present invention is:
The first step: delineation danger of burst zone
In the driving in the dangerous coal seam of bump and the zone that exploitation relates to; Through analogy, face analysis, the judgement of stope bump presentation attributes mutually; Adopt the drilling cuttings method to carry out the scene simultaneously and detect, mark off high stress areas, as the control key area of bump;
Second step: large diameter, deep borehole destroys the coal seam, produces isolation " band "
In the tunnel of high stress areas, every interval 60-70m is vertical two release tunnels of driving in the coal seam along the tunnel, two release tunnel spacing 15-20m, and the release drift section is long-pending to be 6-8 square metre, degree of depth 15-18m and to run through heavily stressed peak region; Simple and easy supporting is adopted in the tunnel, limit monitoring, limit release, limit driving;
Driving carries out the release explosion to the coal column between two release tunnels after accomplishing; During explosion, at first in two release tunnels, hole the diameter 42mm in hole, hole depth 6.0-7.0m respectively to the release tunnel on opposite; Pitch-row roadway floor 1.0～1.3m, spacing of wells 3-4m, 0～3 ° at the boring elevation angle; Loaded length 2.0-3.0m and being filled at the bottom of the hole evenly arranges the detonator of 2-3 to parallel connection, line outside the hole in the hole; Detonate once simultaneously in per 5 holes, quick-fried intact until whole holes, and whole complete coal column is destroyed.
The 3rd step: then, waste filling is carried out in the release tunnel, and solidified with the spoil of cement paste with filling.
Good effect of the present invention is: 1, through in high-stress coal, implementing blasting technique at interval; Coal column is destroyed, produce big destruction " band ", changed the local stress distribution; The people does not have the isolation strip of impact for producing; Exergonic scope is reduced, and the energy rank that once discharges is controlled in the allowed band, fundamentally reduces damaging impact danger.2, waste filling has changed the coal seam impact tendentiousness of regional area, makes the physical property of impacting the coal seam produce gross differences property.
Description of drawings
Below in conjunction with description of drawings enforcement of the present invention.
Fig. 1 is the deathtrap sketch map;
Fig. 2 is that defective is cut apart sketch map;
Fig. 3 is that waste filling and coal body destroy sectional drawing.
The specific embodiment
With reference to the accompanying drawings technical scheme of the present invention is further specified.
The first step: as shown in Figure 1, before certain working face mining, at first draw a circle to approve the danger of burst zone.
Specifically be; In the driving in the dangerous coal seam of bump and the zone that exploitation relates to, through analogy, face analysis, the judgement of stope bump presentation attributes mutually, adopt the drilling cuttings method to carry out scene detection simultaneously; Mark off high stress areas, as the control key area of bump;
Second step: as shown in Figure 2, adopt large diameter, deep borehole to destroy the coal seam, produce isolation " band ".
Specifically be; In the tunnel of high stress areas, every interval 60-70m vertically tunnels 2 release tunnels, two release tunnel spacing 15-20m in the coal seam along the tunnel; Article two, the release drift section is long-pending is 6-8 square metre, degree of depth 15-18m, and runs through heavily stressed peak region; Simple and easy supporting is adopted in the tunnel, limit monitoring, limit release, limit driving;
Driving carries out the release explosion to the coal column between two release tunnels after accomplishing; At first in two release tunnels, hole the diameter 42mm in hole, hole depth 6.0-7.0m during explosion respectively to the release tunnel on opposite; Pitch-row roadway floor 1.0～1.3m, spacing of wells 3-4m, 0～3 ° at the boring elevation angle; Loaded length 2.0-3.0m and being filled at the bottom of the hole evenly arranges the detonator of 2-3 to parallel connection, line outside the hole in the hole; Detonate once simultaneously in per 5 holes, quick-fried intact until whole holes, and whole complete coal column is destroyed.
The 3rd step: then, waste filling is carried out in the release tunnel, and solidified with the spoil of cement paste with filling, implementation result is seen Fig. 3.
Claims (1)
1. a coal mine rock burst defective is cut apart control method, it is characterized in that step is following:
The first step: delineation danger of burst zone
In the driving in the dangerous coal seam of bump and the zone that exploitation relates to; Through analogy, face analysis, the judgement of stope bump presentation attributes mutually; Adopt the drilling cuttings method to carry out the scene simultaneously and detect, mark off high stress areas, as the control key area of bump;
Second step: large diameter, deep borehole destroys the coal seam, produces the isolation strip
In the tunnel of high stress areas, every interval 60-70m is vertical two release tunnels of driving in the coal seam along the tunnel, two release tunnel spacing 15-20m, and the release drift section is long-pending to be 6-8 square metre, degree of depth 15-18m and to run through heavily stressed peak region; Simple and easy supporting is adopted in the tunnel, limit monitoring, limit release, limit driving;
Driving carries out the release explosion to the coal column between two release tunnels after accomplishing; During explosion, at first in two release tunnels, hole the diameter 42mm in hole, hole depth 6.0-7.0m respectively to the release tunnel on opposite; Pitch-row roadway floor 1.0～1.3m, spacing of wells 3-4m, 0～3 ° at the boring elevation angle; Loaded length 2.0-3.0m and being filled at the bottom of the hole evenly arranges the detonator of 2-3 to parallel connection, line outside the hole in the hole; Detonate once simultaneously in per 5 holes, quick-fried intact until whole holes, and whole complete coal column is destroyed;
The 3rd step: waste filling is carried out in the release tunnel, and solidified with the spoil of cement paste with filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102829129A CN102383728A (en) | 2011-09-12 | 2011-09-12 | Coal mine rockburst defect segmentation and control method |
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| CN2011102829129A CN102383728A (en) | 2011-09-12 | 2011-09-12 | Coal mine rockburst defect segmentation and control method |
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| CN102383728A true CN102383728A (en) | 2012-03-21 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350965A (en) * | 2015-11-27 | 2016-02-24 | 西安科技大学 | Rock burst control method for coal mining tunnel |
| 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 |
| 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 |
| CN110714764A (en) * | 2019-12-10 | 2020-01-21 | 山西工程技术学院 | Short-distance overlying residual coal pillar pressure relief method |
| CN110905528A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Method for repairing rock burst dangerous roadway by strong disturbance and segmentation |
| CN112709571A (en) * | 2019-10-24 | 2021-04-27 | 西安闪光能源科技有限公司 | Coal mine tunnel rock burst prevention and control method based on controllable shock wave pre-splitting pressure relief |
| CN112922600A (en) * | 2021-02-26 | 2021-06-08 | 中国恩菲工程技术有限公司 | Stress cut-off type ground pressure control method |
| CN113482720A (en) * | 2021-07-02 | 2021-10-08 | 中煤第三建设（集团）有限责任公司 | Mechanized operation line construction process under rock burst condition |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350965A (en) * | 2015-11-27 | 2016-02-24 | 西安科技大学 | Rock burst control method for coal mining tunnel |
| CN105350965B (en) * | 2015-11-27 | 2017-12-29 | 西安科技大学 | Press prevention and controls exploiting colliery roadway 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 |
| 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 |
| CN112709571A (en) * | 2019-10-24 | 2021-04-27 | 西安闪光能源科技有限公司 | Coal mine tunnel rock burst prevention and control method based on controllable shock wave pre-splitting pressure relief |
| CN110714764A (en) * | 2019-12-10 | 2020-01-21 | 山西工程技术学院 | Short-distance overlying residual coal pillar pressure relief method |
| CN110714764B (en) * | 2019-12-10 | 2020-10-13 | 山西工程技术学院 | Short-distance overlying residual coal pillar pressure relief method |
| CN110905528A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Method for repairing rock burst dangerous roadway by strong disturbance and segmentation |
| CN112922600A (en) * | 2021-02-26 | 2021-06-08 | 中国恩菲工程技术有限公司 | Stress cut-off type ground pressure control method |
| CN113482720A (en) * | 2021-07-02 | 2021-10-08 | 中煤第三建设（集团）有限责任公司 | Mechanized operation line construction process under rock burst condition |
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Application publication date: 20120321 |