工作面过褶曲时微震活动规律研究
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摘要
在煤矿的地质灾害构造中,褶曲构造是常常出现的,它是岩层在水平应力挤压下形成的,在高应力状态下褶曲内部聚集了大量的弹性能,当工作面过褶曲时,破坏了褶曲内部原来的应力状态,这必然导致矿震的发生。冲击矿压和矿山震动总是相伴而生,作为一种区域、实时、动态监测手段,微震监测技术用于预测预报冲击矿压等地质灾害乃至防灾减灾完全可行。结合山寨矿微震系统监测到的矿震数据,通过对褶曲的力学分析和对波形的时谱分析,研究了工作面在过褶曲时的矿震活动规律。
In the mine geological disaster tectonic,the fold tectonic is often appeared.The fold was formed when the rock strata was squeezed by the horizontal stress.Under the high stress status,there would be great elastic energy accumulated in the inner of the fold.When the coal mining face passed the fold,the original stress status in the inner of the fold destructed and thus a mine microseism would be occurred certainly.Therefore the mine pressure bumping and mine microseism would be occurred at the same time.As a regional,real-time,dynamic monitoring and measuring means,the microseism monitoring and measuring technology would be fully feasible to predict and prewarn the mine pressure bumping and mine geological disaster and to prevent and control the disaster.In combination with the mine microseism monitored and measured by the microseism system of Shanzhai Mine,and with the mechanics analysis on the fold and time spectrum analysis on the wave,the paper studied the mine microseism activity law when the coal mining face passed through the fold.
In the mine geological disaster tectonic,the fold tectonic is often appeared.The fold was formed when the rock strata was squeezed by the horizontal stress.Under the high stress status,there would be great elastic energy accumulated in the inner of the fold.When the coal mining face passed the fold,the original stress status in the inner of the fold destructed and thus a mine microseism would be occurred certainly.Therefore the mine pressure bumping and mine microseism would be occurred at the same time.As a regional,real-time,dynamic monitoring and measuring means,the microseism monitoring and measuring technology would be fully feasible to predict and prewarn the mine pressure bumping and mine geological disaster and to prevent and control the disaster.In combination with the mine microseism monitored and measured by the microseism system of Shanzhai Mine,and with the mechanics analysis on the fold and time spectrum analysis on the wave,the paper studied the mine microseism activity law when the coal mining face passed through the fold.
引文
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[3]郭然,潘长良.有岩爆倾向硬岩矿床采矿理论与技术[M].北京冶金工业出版社,2003.
[4]张少泉,关杰,等.矿山地震研究进展[J].国际地震动态,1994,(6):1~6.
[5]杨孟达,刘新华.煤矿矿地质学[M].北京:煤炭工业出版社,2000.
[6]徐芝纶,弹性力学(下册)[M].北京:高等教育出版社,2007.
[7]谢新生.挤压带褶皱构造力学解析及其地震意义[J].地震学报,1999,21(3):278~284.
[8]陈国祥,窦林名,等.褶皱区应力场分布规律及其对冲击矿压的影响[J].中国矿业大学学报,2008,37(6):751~755.
[9]陆菜平,窦林名,吴兴容,等.岩体微震监测的频谱分析与信号识别[J].岩土工程学报,2005,27(7):772~775.
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