CN103527199B - A kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method - Google Patents
A kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method Download PDFInfo
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- CN103527199B CN103527199B CN201310527149.0A CN201310527149A CN103527199B CN 103527199 B CN103527199 B CN 103527199B CN 201310527149 A CN201310527149 A CN 201310527149A CN 103527199 B CN103527199 B CN 103527199B
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Abstract
The invention belongs to Mineral Engineering field, be specifically related to a kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method.In order to solve the large difficult problem of island working face thin coal pillar gob side entry driving surrouding rock deformation, the present invention proposes gob side entry to be arranged in the relatively low depressor area of lateral-supporting pressure, as far as possible reduces thin coal pillar width under the prerequisite ruptured avoiding roof strata; And improve lane side coal body and thin coal pillar stability by changing lane side anchor pole combination, in order to overcome the shortcoming that gob side entry driving lane helps short steel band vertically to arrange, side anchor rod connection piece in lane adopts short steel band horizontal arrangement.The method applicability is strong, and practical operation is convenient, and be easy to field conduct, safety is high, can the safety and high efficiency of effective guarantee mining face under mine, improves the rate of recovery of coal resources to greatest extent.
Description
Technical field
The invention belongs to Mineral Engineering field, be specifically related to a kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method.
Background technology
In recent years, along with the increase of exploitation of coal resources intensity, the many mining areas of China face resource exhaustion and take over nervous situation, in order to improve coal recovery rate, shortening tunnelling time, extend the mine main length of service, working face extraction tunnel adopts more stays thin coal pillar gob side entry driving mode.Ambient stress residing for gob side entry driving country rock has particularity compared with the working face extraction tunnel of routine, deformation of the surrounding rock in tunnel controls to have complexity, therefore how gob side entry driving surrouding rock deformation is control effectively, become one of focus of the vast focus of attention in mining circle.Island working face roadway surrounding rock internal stress is more concentrated, and Face Ground Pressure Behavior is more violent, and roadway surrounding rock destroys more serious, causes island working face thin coal pillar gob side entry driving Surrounding Rock Control to compare routine work face gob side entry driving Surrounding Rock Control more difficult.When gob side entry driving coal column stays and establishes, reserved coal pillar is too wide easily causes larger coal resources waste; The too narrow gob side entry that easily causes of reserved coal pillar is difficult to safeguard.Rational coal pillar width, during both can preventing tunnelling and working face extraction, back ruptures above tunnel or above coal body, can ensure that again tunnel normally uses and safety.
Summary of the invention
Technical problem: the object of the invention is to provide a kind of practical operation island working face thin coal pillar gob side entry driving surrouding rock deformation easily control method to solve the large difficult problem of island working face thin coal pillar gob side entry driving surrouding rock deformation.
Technical scheme: island working face thin coal pillar gob side entry driving surrouding rock deformation control method of the present invention: first gob side entry being arranged in the relatively low depressor area of lateral-supporting pressure, reducing thin coal pillar width as far as possible under the prerequisite ruptured avoiding roof strata; Secondly lane side coal body and thin coal pillar stability is improved by changing lane side anchor pole combination, islet face gob side entry driving top board there will be violent sinking adopting under Action of Fixed Abutment Pressure, also significant compressive strain can be there is in lane side coal body and thin coal pillar, in order to overcome the shortcoming that gob side entry driving lane helps short steel band vertically to arrange, side anchor rod connection piece in lane adopts short steel band horizontal arrangement, lane side immediate support can be realized on the one hand, can ensure that lane side coal body and thin coal pillar compressive strain process inter-road side steel band are close to a coal ancient piece of jade, round, flat and with a hole in its centre all the time on the other hand, supporting is effective all the time.
Beneficial effect: the present invention effectively can control the surrouding rock deformation of island working face thin coal pillar gob side entry driving, makes up the deficiency of current island working face thin coal pillar gob side entry driving roadway deformation supporting method, the safety and high efficiency of effective guarantee mining face under mine.The method applicability is strong, and practical operation is convenient, and be easy to field conduct, safety is high, can improve the rate of recovery of coal resources to greatest extent.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the I-I cross-sectional view of Fig. 1;
Fig. 3 is short steel band horizontal arrangement schematic diagram of the present invention.
In figure: 1-gob side entry, 2-depressor area, 3-thin coal pillar, 4-lane is helped, the short steel band of 5-, 6-coal body.
Detailed description of the invention
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, embodiments of the present invention are further described: when carrying out roadway workface and disposing, for reducing or avoiding the surrouding rock deformation of island working face thin coal pillar gob side entry driving, first gob side entry 1 being arranged in the relatively low depressor area of lateral-supporting pressure 2, under the prerequisite ruptured avoiding roof strata, reducing thin coal pillar 3 width as far as possible, secondly 4 anchor pole combinations raising lanes are helped to help 4 coal bodies 6 and thin coal pillar 3 stability by changing lane, islet face gob side entry driving top board there will be violent sinking adopting under Action of Fixed Abutment Pressure, lane helps 4 coal bodies 6 and thin coal pillar 3 also significant compressive strain can occur, in order to overcome the shortcoming that gob side entry driving lane helps 4 short steel bands 5 vertically to arrange, lane helps 4 anchor rod connection piece to adopt short steel band 5 horizontal arrangement, can realize lane helps 4 immediate supports on the one hand, can ensure that lane helps 4 coal bodies 6 and thin coal pillar 3 compressive strain process inter-road to help 4 short steel bands 5 to be close to a coal ancient piece of jade, round, flat and with a hole in its centre all the time on the other hand, supporting is effective all the time.
Claims (1)
1. an island working face thin coal pillar gob side entry driving surrouding rock deformation control method, being arranged in gob side entry (1) in the relatively low depressor area of lateral-supporting pressure (2), reducing thin coal pillar (3) width avoiding roof strata under the prerequisite ruptured as far as possible; It is characterized in that: described thin coal pillar (3) is arranged on coal body (6) below the overhanging top board of goaf side, lane side (4) coal body (6) and thin coal pillar (3) stability is improved by changing lane side (4) anchor pole combination, in order to overcome the shortcoming that gob side entry driving lane side (4) short steel band (5) is vertically arranged, side (4) anchor rod connection piece in lane adopts short steel band (5) horizontal arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310527149.0A CN103527199B (en) | 2013-10-31 | 2013-10-31 | A kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method |
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| CN201310527149.0A CN103527199B (en) | 2013-10-31 | 2013-10-31 | A kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method |
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| CN103527199A CN103527199A (en) | 2014-01-22 |
| CN103527199B true CN103527199B (en) | 2015-11-04 |
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| CN201310527149.0A Active CN103527199B (en) | 2013-10-31 | 2013-10-31 | A kind of island working face thin coal pillar gob side entry driving surrouding rock deformation control method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569699A (en) * | 2015-12-22 | 2016-05-11 | 大同煤矿集团有限责任公司 | Inclined shaft development support technology for isolated coal pillar |
| CN106089207B (en) * | 2016-06-23 | 2018-06-08 | 大同煤矿集团有限责任公司 | Super high seam working face gob side entry driving thin coal pillar stays equipment, method |
| CN106934178B (en) * | 2017-04-07 | 2020-03-24 | 中国矿业大学 | Pre-mining impact risk pre-evaluation method for island working surface |
| CN107101617B (en) * | 2017-05-12 | 2019-05-17 | 中国矿业大学 | Stope overlying strata activity control method under a kind of coombe landform based on remote sensing monitoring |
| CN112459813B (en) * | 2020-10-30 | 2022-11-18 | 山东东山新驿煤矿有限公司 | Anchor cable setting calculation method for fully mechanized mining face advance support |
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| CN1083896A (en) * | 1993-07-24 | 1994-03-16 | 徐州矿务局庞庄煤矿 | The laneway support method that is used for gob side entry driving under the coal mine |
| CN101122235A (en) * | 2007-10-31 | 2008-02-13 | 中国矿业大学 | Method for controlling wall rock of fully mechanized coal face goaf side coalbed laneway |
| CN201187308Y (en) * | 2008-05-06 | 2009-01-28 | 中国科学院武汉岩土力学研究所 | Gob-side entry driving support for large-inclination thick coal seam with small coal pillars |
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|---|---|---|---|---|
| CN1083896A (en) * | 1993-07-24 | 1994-03-16 | 徐州矿务局庞庄煤矿 | The laneway support method that is used for gob side entry driving under the coal mine |
| CN101122235A (en) * | 2007-10-31 | 2008-02-13 | 中国矿业大学 | Method for controlling wall rock of fully mechanized coal face goaf side coalbed laneway |
| CN201187308Y (en) * | 2008-05-06 | 2009-01-28 | 中国科学院武汉岩土力学研究所 | Gob-side entry driving support for large-inclination thick coal seam with small coal pillars |
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| 孤岛工作面沿空掘巷快速掘进研究;王永强;《煤炭与化工》;20131026;第36卷(第6期);全文 * |
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