CN110005431A - A kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method - Google Patents
A kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method Download PDFInfo
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- CN110005431A CN110005431A CN201910296257.9A CN201910296257A CN110005431A CN 110005431 A CN110005431 A CN 110005431A CN 201910296257 A CN201910296257 A CN 201910296257A CN 110005431 A CN110005431 A CN 110005431A
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- working face
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- 239000003245 coal Substances 0.000 title claims abstract description 36
- 230000001788 irregular Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005065 mining Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 239000003657 drainage water Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 claims description 2
- 239000010437 gem Substances 0.000 claims description 2
- 229910001751 gemstone Inorganic materials 0.000 claims description 2
- 230000008092 positive effect Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst methods, it is as follows: in the return airway for irregular gob-surrounded pillar of constructing, it is arranged along low stress area cut-off, form some irregular areas, impact danger zone is determined into irregular area corresponding gob-surrounded pillar side location, using the both wings within the scope of the 30-50m of impact danger zone as risk transitional region；Before working face mining, exploited again after working face is to risk transitional region release first；When working face enters impact danger zone; the method for taking conventional drill eye blasting manufactures a wide release drainage; enable the deformation of impact danger zone in an a wide range of interior release for a long time, plays the protective effect buffered after first release, it is ensured that coal production safety.
Description
Technical field
The invention belongs to coal mining technology fields.
Background technique
There is irregular gob-surrounded pillar, often after regular stope completes exploitation in order to as far as possible in some old coal mines of China
Reclaiming coal resource needs to carry out remnants of defeated troops' exploitation to these gob-surrounded pillars.Gob-surrounded pillar especially irregular type gob-surrounded pillar is opened
It adopts and presses with being often associated with damaging impact.The reason is that irregular coal column causes stress field that significant changes occur, work as working face mining
Afterwards, this working face and top working face will form narrow and small coal pillar, and when pressure reaches certain numerical value, which can occur unstability, lure
Send out large area bump.The prevention and control of bump are world-class problems.The bump of irregular coal pillar mining is anti-at present
It controls essentially identical with the control method in routine work face, mainly takes danger releasing measures, including coal-bed flooding, strong supporting, coal seam are strong
Release, disconnected top, disconnected bottom etc..These measures in the specific implementation process, due to the propulsion with working face, in advance and lateral stress
Increase, especially irregular area will lead to high-level energy release, be easy to make in irregular area due to lateral traction
It is concentrated at locality stress, presses possibility to increase damaging impact occurs.After this working face mining, in the larger area of coal pillar width
Domain will form the high mining induced stress of superposition, gather high-level deformation energy, and the biggish impact failure of intensity occurs.When coal column is irregular
When degree height, narrower width, buried depth are big, the shock hazard under working face dynamic action is higher, the routine techniques of conventional method
Parameter is poor to the bump solution danger effect of irregular coal column, and is difficult to achieve the effect that clear.Therefore irregular lonely
Up to the present the prevention and control of bump during the coal pillar mining of island there are no the degree fully controlled is fundamentally reached, are opened
Degree of danger during adopting is larger.
Summary of the invention
For Controlling of Coal Outburst during solving the problems, such as irregular pillar face exploitation at present, the present invention proposes a kind of pre-
First take the control method of stress transfer, energy dissipation.
The technical scheme is that
A kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method is as follows:
One, the arrangement and region division of return airway
In the return airway for the irregular gob-surrounded pillar of constructing, arranged along low stress area cut-off, and between goaf there are
The shield lane fender of 3.0 ~ 4.0m width, and constructed according to coal seam conditions and meet production, other tunnels that ventilation needs；Working face
After the completion of crossheading construction, it will form some outwardly projecting locations along goaf side and greater than the fender location of 7-8m width,
Using these locations as irregular area, by irregular area corresponding gob-surrounded pillar side location, according to previous mining Practice with
It impacts the example shown and carries out analogy, determine impact danger zone, it will be within the scope of the 30-50m of impact danger zone
Both wings are as risk transitional region；
Two, previously fabricated not wide release drainage
Before working face mining, conventional large diameter borehole destressing method is taken risk transitional region in working face first, is manufactured
One transition release drainage；The large diameter borehole that diameter is greater than 100mm, spacing of wells 1- are beaten to coal seam specifically on working face
2m, depth 5-8m, is exploited again after release；During working face mining, the impact energy of transition release drainage is released in advance
It puts, enables working face smoothly close to impact danger zone；When working face enters impact danger zone, conventional jewel hole is taken
The method of explosion manufactures a wide release drainage；The depth of wide release drainage is 2-3 times of transition release drainage, i.e. drilling depth 10-
25m enables the deformation of impact danger zone in an a wide range of interior release for a long time, while drilling and carrying out to wide release drainage
Water filling softens coal seam, so that the coal body with burst trend is converted into weak burst trend, plays the protection buffered after first release
Effect；
Three, validity check
Working face in progradation, carries out advanced validity check using traditional drilling cuttings method in impact danger zone；Exist
The perforating in the lateral coal seam of coal column of diameter 42mm drill bit, eye depth 7.0-8.0m, 0 ~ 3 ° of the elevation angle, eye distance 5.0- are used in return airway
10m；When drilling cuttings method, which is examined, occurs exceeded, continue to carry out release to transition release drainage and wide release drainage, until shock hazard
It completely eliminates, working face is further continued for promoting.
The positive effect of the present invention is: the principle by taking preparatory stress transfer, energy dissipation solves irregular coal
Controlling of Coal Outburst problem during column working face mining, it is ensured that coal production safety.
Illustrate implementation of the invention with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the roadway layout and region division plan view of embodiment；Fig. 2 is that the large diameter borehole destressing method of embodiment shows
It is intended to.
Specific embodiment
Those skilled in the art are according to the technical solution of summary of the invention, roadway layout shown in FIG. 1 and region division plane
Figure and large diameter borehole destressing method schematic diagram shown in Fig. 2, that is, implementable, this will not be detailed here.
Claims (1)
1. a kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method, as follows:
(1) arrangement and region division of return airway
In the return airway for the irregular gob-surrounded pillar of constructing, arranged along low stress area cut-off, and between goaf there are
The shield lane fender of 3.0 ~ 4.0m width, and constructed according to coal seam conditions and meet production, other tunnels that ventilation needs；Working face
After the completion of crossheading construction, it will form some outwardly projecting locations along goaf side and greater than the fender location of 7-8m width,
Using these locations as irregular area, by irregular area corresponding gob-surrounded pillar side location, according to previous mining Practice with
It impacts the example shown and carries out analogy, determine impact danger zone, it will be within the scope of the 30-50m of impact danger zone
Both wings are as risk transitional region；
(2) previously fabricated not wide release drainage
Before working face mining, conventional large diameter borehole destressing method is taken risk transitional region in working face first, is manufactured
One transition release drainage；The large diameter borehole that diameter is greater than 100mm, spacing of wells 1- are beaten to coal seam specifically on working face
2m, depth 5-8m, is exploited again after release；During working face mining, the impact energy of transition release drainage is released in advance
It puts, enables working face smoothly close to impact danger zone；When working face enters impact danger zone, conventional jewel hole is taken
The method of explosion manufactures a wide release drainage；The depth of wide release drainage is 2-3 times of transition release drainage, i.e. drilling depth 10-
25m enables the deformation of impact danger zone in an a wide range of interior release for a long time, while drilling and carrying out to wide release drainage
Water filling softens coal seam, so that the coal body with burst trend is converted into weak burst trend, plays the protection buffered after first release
Effect；
(3) validity check
Working face in progradation, carries out advanced validity check using traditional drilling cuttings method in impact danger zone；Exist
The perforating in the lateral coal seam of coal column of diameter 42mm drill bit, eye depth 7.0-8.0m, 0 ~ 3 ° of the elevation angle, eye distance 5.0- are used in return airway
10m；When drilling cuttings method, which is examined, occurs exceeded, continue to carry out release to transition release drainage and wide release drainage, until shock hazard
It completely eliminates, working face is further continued for promoting；
The positive effect of the present invention is: the principle by taking preparatory stress transfer, energy dissipation solves irregular coal column work
Make Controlling of Coal Outburst problem during the exploitation of face, it is ensured that coal production safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910296257.9A CN110005431A (en) | 2019-04-13 | 2019-04-13 | A kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910296257.9A CN110005431A (en) | 2019-04-13 | 2019-04-13 | A kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005431A true CN110005431A (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910296257.9A Withdrawn CN110005431A (en) | 2019-04-13 | 2019-04-13 | A kind of irregular gob-surrounded pillar working face Controlling of Coal Outburst method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905508A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Roadway anti-scour method for artificially manufacturing differential medium laminar flow |
| CN110905596A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Hard roof type rock burst prevention and treatment method based on change of medium properties |
| CN112483141A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for predicting impact risk by support resistance |
| CN112901169A (en) * | 2021-01-19 | 2021-06-04 | 安徽理工大学 | Impact instability judging and anti-impact mining method for asymmetrical island working surface |
| CN113931682A (en) * | 2021-10-27 | 2022-01-14 | 彬县水帘洞煤炭有限责任公司 | Multi-disaster combined prevention and control system used before coal seam mining on high-gas low-lying island working face |
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|---|---|---|---|---|
| CN1664310A (en) * | 2005-02-28 | 2005-09-07 | 清华大学 | Control method for coal mine detached island coal pillar rock burst |
| CN102296957A (en) * | 2011-07-22 | 2011-12-28 | 山东科技大学 | Method of transfixing and distressing with one explosion during tunneling of seam roadway with rock burst |
| CN104453899B (en) * | 2014-11-06 | 2016-08-24 | 大同煤矿集团有限责任公司 | Complex condition island working face safety coal extraction method |
| 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 |
| 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 |
-
2019
- 2019-04-13 CN CN201910296257.9A patent/CN110005431A/en not_active Withdrawn
Patent Citations (5)
| 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 |
| CN102296957A (en) * | 2011-07-22 | 2011-12-28 | 山东科技大学 | Method of transfixing and distressing with one explosion during tunneling of seam roadway with rock burst |
| CN104453899B (en) * | 2014-11-06 | 2016-08-24 | 大同煤矿集团有限责任公司 | Complex condition island working face safety coal extraction method |
| 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 |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905508A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Roadway anti-scour method for artificially manufacturing differential medium laminar flow |
| CN110905596A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Hard roof type rock burst prevention and treatment method based on change of medium properties |
| CN112483141A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for predicting impact risk by support resistance |
| CN112901169A (en) * | 2021-01-19 | 2021-06-04 | 安徽理工大学 | Impact instability judging and anti-impact mining method for asymmetrical island working surface |
| CN113931682A (en) * | 2021-10-27 | 2022-01-14 | 彬县水帘洞煤炭有限责任公司 | Multi-disaster combined prevention and control system used before coal seam mining on high-gas low-lying island working face |
| CN113931682B (en) * | 2021-10-27 | 2024-03-22 | 彬县水帘洞煤炭有限责任公司 | High-gas low-lying island working face coal seam pre-mining multi-disaster combined control system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190712 |