基于最大值的岩层断裂监测机理与方法研究
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摘要
研究由矿山开采引起的覆岩断裂,可探究地表沉陷的原因及覆岩断裂与地表沉陷的时空关系。从岩层断裂时诱发的微震现象入手,利用微地震定位原理,建立微震计算模型。在获得微波同时不考虑振幅、频率与能量的基础上,只要每个检波器能够检测到的是同一性质的最大值时刻,就可以实现岩体断裂(震源)的空间定位,从而利用最大值达到时刻来确定岩体断裂的即时位置,确定微震波速,进而研究地表沉陷的内部原因。
Through study on the overburden rock fracture caused by mining,the paper explores the factors for surface subsidence and its temporal and spatial relations between the overburden rock fracture and surface subsidence.From the angle of micro seismic phenomenon induced by rock fracture,with the micro seismic orientation principle,the micro seismic calculation model is established.With the microwave only,and without considering the amplitude,frequency and energy,as long as each detector is able to detect the maximum moment with the same nature,the spatial orientation for the rock fracture(micro-seismic source) can be realized.Thereby,the instant position of rock fracture can be determined according to the maximum value moment.And then,the micro-seismic wave velocity is fixed to study the internal causes of surface subsidence.
Through study on the overburden rock fracture caused by mining,the paper explores the factors for surface subsidence and its temporal and spatial relations between the overburden rock fracture and surface subsidence.From the angle of micro seismic phenomenon induced by rock fracture,with the micro seismic orientation principle,the micro seismic calculation model is established.With the microwave only,and without considering the amplitude,frequency and energy,as long as each detector is able to detect the maximum moment with the same nature,the spatial orientation for the rock fracture(micro-seismic source) can be realized.Thereby,the instant position of rock fracture can be determined according to the maximum value moment.And then,the micro-seismic wave velocity is fixed to study the internal causes of surface subsidence.
引文
[1]宋振骐,等.实用矿山压力控制[M].徐州:中国矿业大学出版社,1988.
[2]史红.煤矿岩层破裂的微震监测与力学机理[M].北京:海洋出版社,2008.
[3]卢爱红,徐征峰.含裂纹结构的断裂监测与预警[J].河北建筑科技学院学报,2002,19(1):43-45.
[4]姜福兴,Xun Luo.微震监测技术在矿井岩层破裂监测中的应用[J].岩土工程学报,2002,24(2):147-149.
[5]屈成民,何峰,冯冠一.近距离下煤层开采岩层破断微震监测研究枣[J].金属矿山,2012(6):129-132.
[6]董陇军,李夕兵,唐礼忠,等.无需预先测速的微震震源定位的数学形式及震源参数确定[J].岩石力学与工程学报,2011,30(10):2057-2067.
[2]史红.煤矿岩层破裂的微震监测与力学机理[M].北京:海洋出版社,2008.
[3]卢爱红,徐征峰.含裂纹结构的断裂监测与预警[J].河北建筑科技学院学报,2002,19(1):43-45.
[4]姜福兴,Xun Luo.微震监测技术在矿井岩层破裂监测中的应用[J].岩土工程学报,2002,24(2):147-149.
[5]屈成民,何峰,冯冠一.近距离下煤层开采岩层破断微震监测研究枣[J].金属矿山,2012(6):129-132.
[6]董陇军,李夕兵,唐礼忠,等.无需预先测速的微震震源定位的数学形式及震源参数确定[J].岩石力学与工程学报,2011,30(10):2057-2067.
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