CN107304677A - The regional prevention and controls of the bump of coal seam group mining - Google Patents
The regional prevention and controls of the bump of coal seam group mining Download PDFInfo
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- CN107304677A CN107304677A CN201610251958.7A CN201610251958A CN107304677A CN 107304677 A CN107304677 A CN 107304677A CN 201610251958 A CN201610251958 A CN 201610251958A CN 107304677 A CN107304677 A CN 107304677A
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- 239000003245 coal Substances 0.000 title claims abstract description 98
- 238000005065 mining Methods 0.000 title claims abstract description 35
- 230000002265 prevention Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 2
- 238000009412 basement excavation Methods 0.000 abstract 1
- 230000003628 erosive effect Effects 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The present invention relates to a kind of large-scale prevention and controls in coal seam group bump region, the shock hazard of production zone can be reduced from source.Before the new exploiting field of mine carries out digging, the identification of coal rock layer Burst Tendency and detecting earth stress work are carried out, the conceptual design based on erosion control purpose is carried out according to measurement result combination condition of coal seam occurrence.Rational Protective Coal Seam is determined according to coal rock layer Burst Tendency result first, the determination of coal-mining method and section coal pillar size is carried out further according to coal seam conditions, afterwards according to the crustal stress distribution situation in exploiting field, determine the arrangement of working excavation, after face layout form is determined, rational mining sequence is selected, the large-scale Controlling of Coal Outburst purpose in exploiting field can be reached by the design of determination.The problem of local danger releasing measures of current bump fundamentally can not reduce shock hazard is this method solve, with workable, the features such as quantities is small, Controlling of Coal Outburst effect will be caused to become apparent.
Description
Technical field
The invention belongs to prevention and control of mine disaster technical field, in particular for New Built Mine or new exploiting field, one kind of new height application
Bump regionality prevention and controls.
Background technology
Bump is coal and rock around mine working or stope, produced due to the abrupt release of elastic deformation energy with suddenly,
Drastically, the dynamic phenomenon that fierce destruction is characterized.Current China bump mine quantity has been over 140, distribution
In more than 20 provinces (city, autonomous region).In bump mine, with the increase of China's coal-mine mining rate and mining depth,
So that bump problem is more and more severe.Therefore, strengthen Controlling of Coal Outburst technical research, be to ensure that China's economy is quickly sent out
The exhibition vital task very urgent with social progress and people's life, property safety.
Preventing and treating currently for bump mainly uses pressure relief method, including unloading by blasting, large diameter borehole release, high pressure injection
The measures such as water, top plate presplitting, the above method has played certain effect in terms of Controlling of Coal Outburst, but belongs to local small model
The preventing and controlling enclosed, still can not fundamentally solve the problem of stress concentration occurred in mining process, and such methods engineering amount
Huge, construction cost is high.Therefore, in the urgent need to one kind can on a large scale be set about from region, reduction stress of coal seam concentrates situation,
Prevent and treat the regional means of prevention of bump.
The content of the invention
It is an object of the invention to provide a kind of prevention and controls of bump, realize to the big model in the regions such as mining areas of mine or working face
The Controlling of Coal Outburst enclosed, effectively reduces the bump danger that colliery is likely to occur.
To achieve the above objectives, solution of the present invention is：
The regional prevention and controls of a kind of coal mine rock burst, it is characterised in that comprise the following steps：
A, in the range of mine minable coal seam carry out Burst Tendency identification, determine the Burst Tendency in each coal seam.
B, to mine carry out detecting earth stress.
C, wherein one layer of selection are preferentially exploited as Protective Coal Seam, and other coal seams as being exploited again after by Protective Coal Seam, waiting to liberate.
D, according to condition of coal seam occurrence, selection coal-mining method and coal winning technology；
E, according to geology and mining conditions, using the roadway protection processing that fender is set without coal column or stay；
F, base area stress distribution feature, select gateway layout method, determine that tunnel is moved towards；
G, according to arrangement of mining area situation, determine mining sequence, it is to avoid formed island working face.
The Burst Tendency of Coal Seam identification, refers to and passes through collection in worksite coal seam and roof and floor to the minable coal seam in the range of the field with "nine squares" of colliery
Sample, according to GB/T 25217《Bump is determined, predicted and prevention and controls》First and second part carries out Burst Tendency survey
It is fixed, the Burst Tendency of coal seam and roof and floor is obtained, is divided into without impact, weak impact and thump.
The detecting earth stress, using stress relief method, is adopted to determine the rock mass internal stress under native state by test
Direction, the size of maximum principal stress, minimum principal stress and intermediate principal stress in the range of area.
The Protective Coal Seam should follow following principle in selection：In the coal seam in the range of field with "nine squares", prioritizing selection is answered without impact coal seam
It is used as Protective Coal Seam；If there is Burst Tendency, the weaker coal seam of selection Burst Tendency is used as Protective Coal Seam；If all coal seam punchings
Hit that tendentiousness is the same, then select the coal seam of topmost to be used as Protective Coal Seam.
The selection of the coal-mining method and coal winning technology, should combine ocurrence of coal seam situation, coal-mining method prioritizing selection longwall mining
Method, secondly coal winning technology prioritizing selection mining is fully mechanized mining.
The arrangement principle of the gateway layout method, should be on the basis of the determination of exploiting field crustal stress distribution situation, it is ensured that main roadway
Axis is parallel with maximum horizontal principal stress so that tunnel is influenceed minimum by horizontal stress.
The coal column, which is stayed, to be set characterized in that, using gob side entry retaining or staying for lower curtate exploitation working face and setting 3~5m fenders
Mode, it is to avoid the stress concentration in coal column.
The mining sequence is characterized in that, exploiting field inner working face is exploited in sequence, it is to avoid jump, which is adopted, causes island working face to be opened
Adopt.
As a result of such scheme, the invention has the characteristics that：(1) answering for production zone can be reduced on a large scale from region
Power concentrates situation, and then reduces the degree of danger of bump.(2) invention can reduce the bump in recovery process
Prevention and cure project amount, reduces the cost accounting of bump.(3) this method fundamentally can reduce or release bump to life
The threat of production, is conducive to safety in production.In addition, this method establishes bump regional control principle from another point of view, have
It is workable, the features such as prevention effect is good, with higher application and popularization value.
Brief description of the drawings
The flow chart of Fig. 1 the inventive method.
Embodiment：
The method of the invention is described further with reference to accompanying drawing：
As shown in figure 1, the present invention is a kind of coal mine rock burst extensive area prevention and controls, this method is primarily adapted for use in newly-built
Mine or new exploiting field, the exploitation of new height, bump can be reduced in the progress mining Design stage using this method from source
The danger of generation, reduces local release quantities.
Treat that the geologic information of production zone is analyzed to mine first, determine all minable coal seams in limit of mining.Then pin
The coal seam and its roof and floor of each layer of coal are sampled, can be by the way of collection coal petrography block or core during sampling.By coal petrography
Sample is transported to behind laboratory, according to GB/T 25217《Bump is determined, predicted and prevention and controls》First and second part is carried out
Burst Tendency is determined, and then obtains the Burst Tendency of every layer of coal and roof and floor.According to the Burst Tendency measurement result of gained,
Select Protective Coal Seam (coal seam preferentially exploited) and by Protective Coal Seam (coal seam for obtaining unloading pressure protection).Protective Coal Seam should be followed in selection
Following principle：Prioritizing selection is used as Protective Coal Seam without impact coal seam；If there is Burst Tendency, selection Burst Tendency is weaker
Coal seam is used as Protective Coal Seam；If all Burst Tendency of Coal Seam are the same, the coal seam of selection topmost is used as Protective Coal Seam.
Determine after Protective Coal Seam, according to the occurrence condition in coal seam, determine the recovery method and production practice in coal seam, in the method,
Following principle is mainly followed for preventing and treating bump：Coal-mining method prioritizing selection longwall system, coal winning technology prioritizing selection fully mechanized mining
Sub-Level Caving, is secondly fully mechanized mining.Determine after coal-mining method, with reference to the occurrence condition and coal winning technology in coal seam, determine working face
Between staying for section coal pillar set, for the exploitation of Protective Coal Seam, should take and not stay coal column or only stay the mode that sets 3~5m fenders.
Detecting earth stress is carried out in the development work of production zone, and obtains the maximum principal stress of production zone, minimum principal stress
Size and direction with intermediate principal stress.According to detecting earth stress result, roadway workface arrangement is determined, based on impact ground
Press the arrangement principle of preventing and treating, it is ensured that main roadway axis is parallel with maximum horizontal principal stress so that shadow of the tunnel by horizontal stress
Ring minimum.
Finally after face layout form determination, exploiting field inner working face is exploited in sequence, it is to avoid jump, which is adopted, causes isolated island work
Make face exploitation.
The inventive method is the large-scale prevention and controls in bump region, can by using this method in the Mining block design stage
Bump is reduced from source dangerous, in addition, this method have the advantages that it is efficient and convenient, workable.
The above-mentioned example description to the present invention is understood that for the ease of those skilled in the art and using this hair
It is bright, after person skilled in the art obviously can modify to examples detailed above, and the General Principle of this explanation is applied to
In other embodiment, without passing through performing creative labour.Therefore, the invention is not restricted to example here, people in the art
Member is according to the announcement of the present invention, and the improvement made for the present invention and modification all should be within protection scope of the present invention.
Claims (8)
1. a kind of bump regional control method of coal seam group mining, it is characterised in that comprise the following steps：
A, in the range of exploiting field minable coal seam carry out Burst Tendency identification, determine the burst trend of each coal seam and roof and floor
Property.
B, to mine carry out detecting earth stress.
C, wherein one layer of selection are preferentially exploited as Protective Coal Seam, and other coal seams as being exploited again after by Protective Coal Seam, waiting to liberate.
D, according to condition of coal seam occurrence, selection coal-mining method and coal winning technology；
E, according to geology and mining conditions, using the roadway protection processing that fender is set without coal column or stay；
F, base area stress distribution feature, select gateway layout method, determine that tunnel is moved towards；
G, according to arrangement of mining area situation, determine mining sequence, it is to avoid formed island working face.
2. coal rock layer Burst Tendency described in claim 1 is identified, refer to and scene is passed through to the minable coal seam in the range of the field with "nine squares" of colliery
Coal seam and roof and floor sample are gathered, according to GB/T 25217《Bump is determined, predicted and prevention and controls》First and second part
Burst Tendency measure is carried out, the Burst Tendency of coal seam and roof and floor is obtained, is divided into without impact, weak impact and thump.
3. detecting earth stress described in claim 1 is determines the rock mass internal stress under native state, using stress relief method,
Maximum principal stress, the direction of minimum principal stress and intermediate principal stress, the size in the range of exploiting field are obtained by test.
4. Protective Coal Seam described in claim 1 determines that following principle should be followed：In the coal seam in the range of field with "nine squares", prioritizing selection is answered
Protective Coal Seam is used as without impact coal seam；If there is Burst Tendency, the weaker coal seam of selection Burst Tendency is used as Protective Coal Seam；If
All Burst Tendency of Coal Seam are the same, then select the coal seam of topmost to be used as Protective Coal Seam.
5. the selection of coal-mining method described in claim 1 and coal winning technology, should combine ocurrence of coal seam situation, coal-mining method is excellent
Longwall system is first selected, secondly coal winning technology prioritizing selection mining is fully mechanized mining.
6. the arrangement principle of gateway layout method described in claim 1, should on the basis of the determination of exploiting field crustal stress distribution situation,
Ensure that main roadway axis is parallel with maximum horizontal principal stress so that tunnel is influenceed minimum by horizontal stress.
Set 7. coal column described in claim 1 is stayed characterized in that, using gob side entry retaining for lower curtate exploitation working face or staying
If the mode of 3~5m fenders, it is to avoid the stress concentration in coal column.
8. mining sequence described in claim 1 is characterized in that, exploiting field inner working face is exploited in sequence, it is to avoid jump, which is adopted, draws
Play island working face exploitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251958.7A CN107304677A (en) | 2016-04-22 | 2016-04-22 | The regional prevention and controls of the bump of coal seam group mining |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610251958.7A CN107304677A (en) | 2016-04-22 | 2016-04-22 | The regional prevention and controls of the bump of coal seam group mining |
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| CN107304677A true CN107304677A (en) | 2017-10-31 |
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| CN201610251958.7A Pending CN107304677A (en) | 2016-04-22 | 2016-04-22 | The regional prevention and controls of the bump of coal seam group mining |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111553614A (en) * | 2020-05-12 | 2020-08-18 | 华北科技学院 | Anti-impact safe mining demonstration method for island working face |
| CN113482718A (en) * | 2021-08-10 | 2021-10-08 | 中煤科工开采研究院有限公司 | Method for preventing rock burst through pressure relief arrangement of roadway group of coal seam panel |
Citations (3)
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|---|---|---|---|---|
| CN101162177A (en) * | 2007-11-14 | 2008-04-16 | 南京银茂铅锌矿业有限公司 | Method for measuring ground stress |
| CN103939099A (en) * | 2014-04-11 | 2014-07-23 | 中国矿业大学 | Method for controlling strong shock risk coal seam group rock burst |
| CN104564072A (en) * | 2015-01-14 | 2015-04-29 | 中国矿业大学 | Complete non-coal-pillar continuous depressurized mining method for close-distance coal seam groups |
-
2016
- 2016-04-22 CN CN201610251958.7A patent/CN107304677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162177A (en) * | 2007-11-14 | 2008-04-16 | 南京银茂铅锌矿业有限公司 | Method for measuring ground stress |
| CN103939099A (en) * | 2014-04-11 | 2014-07-23 | 中国矿业大学 | Method for controlling strong shock risk coal seam group rock burst |
| CN104564072A (en) * | 2015-01-14 | 2015-04-29 | 中国矿业大学 | Complete non-coal-pillar continuous depressurized mining method for close-distance coal seam groups |
Non-Patent Citations (1)
| Title |
|---|
| 余峰: "《平顶山矿区煤岩冲击试验及冲击地压预测研究》", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111553614A (en) * | 2020-05-12 | 2020-08-18 | 华北科技学院 | Anti-impact safe mining demonstration method for island working face |
| CN111553614B (en) * | 2020-05-12 | 2022-04-05 | 华北科技学院 | Anti-impact safe mining demonstration method for island working face |
| CN113482718A (en) * | 2021-08-10 | 2021-10-08 | 中煤科工开采研究院有限公司 | Method for preventing rock burst through pressure relief arrangement of roadway group of coal seam panel |
| CN113482718B (en) * | 2021-08-10 | 2024-05-31 | 中煤科工开采研究院有限公司 | Method for preventing rock burst through pressure relief arrangement of coal seam disc zone roadway group |
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Application publication date: 20171031 |
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