浅埋深矿井工作面冲击地压分析及防治研究
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摘要
针对浅埋深矿井首次发生在工作面的冲击地压问题,通过对宽沟煤矿W1143工作面地质及生产技术条件分析,初步得出煤层强冲击倾向性、坚硬难垮顶板、"三面孤岛"空间结构、地震多发带、水平地应力和断层等地质构造是影响冲击的主要影响因素。基于此,采用钻屑法初步划分了几个冲击危险区,并提出了顶板深孔爆破弱化顶板、煤体爆破卸压和巷帮施工卸压硐室等防冲措施。
For the rock burst that occurred for the first time on the mining face of shallow depth mine,the essay analyzes the geological and technical conditions of Kuangou coal mine's W1143 mining face,and concludes that coal seam strong rock burst tendency,hard roof,the spatial structure of "an island surrounded by minded areas on the three sides",earthquake-prone zone,the level of stress,faults and other geological structures are the main factors that affect the burst.Based on this,the method of drilling and cutting is initially used to demarcate several potential burst zones,and it is proposed that prevention measures such as roof deep-hole blasting to weaken the roof,coal blasting for pressure relief and roadway wall pressure relief chamber.
For the rock burst that occurred for the first time on the mining face of shallow depth mine,the essay analyzes the geological and technical conditions of Kuangou coal mine's W1143 mining face,and concludes that coal seam strong rock burst tendency,hard roof,the spatial structure of "an island surrounded by minded areas on the three sides",earthquake-prone zone,the level of stress,faults and other geological structures are the main factors that affect the burst.Based on this,the method of drilling and cutting is initially used to demarcate several potential burst zones,and it is proposed that prevention measures such as roof deep-hole blasting to weaken the roof,coal blasting for pressure relief and roadway wall pressure relief chamber.
引文
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[4]牟宗龙,窦林名,张广文,等.坚硬顶板型冲击矿压灾害防治研究[J].中国矿业大学学报,2006,35(6):738-741.
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[7]姜福兴,杨淑华,XUN Luo.微地震监测揭示的采场围岩空间破裂形态[J].煤炭学报,2003,28(4):357-360.
[8]张小涛,窦林名.冲击矿压工作面卸压巷卸压法探讨[J].煤炭科学技术.2005,33(10):72-74.
[2]齐庆新,窦林名.冲击地压理论与技术[M].徐州:中国矿业大学出版社,2008.
[3]窦林名,赵从国,杨思光,吴兴荣.煤矿开采冲击矿压灾害防治[M].徐州:中国矿业大学出版社,2006.
[4]牟宗龙,窦林名,张广文,等.坚硬顶板型冲击矿压灾害防治研究[J].中国矿业大学学报,2006,35(6):738-741.
[5]靳钟铭,徐林生.煤矿坚硬顶板控制[M].煤炭工业出版社,1994.
[6]姜福兴,XUN Luo,杨淑华.采场覆岩空间破裂与采动应力场的微震探测研究[J].岩土工程学报,2003,25(1):23-25.
[7]姜福兴,杨淑华,XUN Luo.微地震监测揭示的采场围岩空间破裂形态[J].煤炭学报,2003,28(4):357-360.
[8]张小涛,窦林名.冲击矿压工作面卸压巷卸压法探讨[J].煤炭科学技术.2005,33(10):72-74.
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