近距离下煤层岩层破断监测及煤柱确定研究
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摘要
针对木瓜矿近距离下煤层109工作面巷道支护、区段煤柱的合理宽度确定的技术难题,基于微震监测理论,采用现场监测的方法,对工作面回风巷上覆岩层破断的时空位置、能量和微震事件分布形态特征等随工作面推进的变化进行监测,确定109工作面侧向矿山压力分布规律、上覆岩层的破断规律及破坏程度,为确定区段煤柱的合理宽度提供现场科学数据,实现近距离煤炭资源的安全高效回采,该成果对近距离下煤层安全开采研究具有现场指导意义。
The closed distance lower coal mining in Mugua mine,the technical problems were roadway supporting of 109 working face and the reasonable width of coal pillar.Based on the microseismic monitoring theory,the in-situ monitoring method is used in the return airway strata break of time and space position,energy and microseismic distribution form characteristics with working face impelling,the 109 working face of mine pressure distribution rule and lateral strata break law and damage degree were determined,and it has provided scientific data with determining the reasonable coal pillar width,the closed distance of the coal resources realized safety and efficiency mining,the monitoring results had onsite guidance significance of closed distance lower coal seam mining.
The closed distance lower coal mining in Mugua mine,the technical problems were roadway supporting of 109 working face and the reasonable width of coal pillar.Based on the microseismic monitoring theory,the in-situ monitoring method is used in the return airway strata break of time and space position,energy and microseismic distribution form characteristics with working face impelling,the 109 working face of mine pressure distribution rule and lateral strata break law and damage degree were determined,and it has provided scientific data with determining the reasonable coal pillar width,the closed distance of the coal resources realized safety and efficiency mining,the monitoring results had onsite guidance significance of closed distance lower coal seam mining.
引文
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[2]宋振骐.实用矿山压力控制[M].徐州,中国矿业大学出版社,1992:22-33.
[3]钱鸣高,石平五.矿山压力与岩层控制[M].徐州,中国矿业大学出版社,2003:55-58.
[4]张百胜,杨双锁,翟英达,等.极近距离煤层回采巷道合理位置确定方法的探讨[J].岩石力学与工程学报,2008,27(1),97-101.
[5]谢文兵,史振凡.近距离跨采对巷道围岩稳定性影响分析[J].岩土工程与力学学报,2004,23(12):1986-1991.
[6]黄艳利,张吉雄.近距离煤层回采巷道合理布置方案[J].煤矿安全,2009(9):66-68.
[7]姜福兴,杨淑华,成云海,等.煤矿冲击地压的微地震监测研究[J].地球物理学报,2006,49(5):1511-1516.
[8]姜福兴,杨淑华.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.
[9]于克君,骆循,张兴民.煤层顶板“两带”高度的微地震监测技术[J].煤田地质与勘探,2002(1):47-51.
[10]姜福兴,张兴民.煤矿井下微震检测仪:中国,ZL200420039442.9.[P].2005-03-23.
[11]杨淑华,张兴民,姜福兴,等.微地震定位监测的深孔检波器及其安装技术[J].北京科技大学学报,2006(1):68-70.
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