矿震前兆分区监测方法及应用  

A zoning monitoring method of microseismic premonition and its application

作　　者：李志华[1] 窦林名[1] 管向清 柳俊仓 巩思园[1] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]临沂矿业集团古城煤矿,山东充州272100

出　　处：《煤炭学报》2009年第5期614-618,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50490273,50474068);“十一五”国家科技支撑计划基金资助项目(2006BAK04B02,2006BAK03B06);国家重点基础研究发展计划(973)基金资助项目(2005CB221504)

摘　　要：根据岩土介质冲击震动能量衰减规律,确定了冲击震动破坏的最大动力响应范围,提出了矿震前兆分区监测方法,采用编程工具VB对CAD的二次开发,实现了矿震监测结果在矿图上的合成和分区统计处理.以古城煤矿2次冲击矿压前矿震信号为研究对象,分区分析和利用这些前兆信息,结果表明:在冲击矿压发生前,矿井矿震活动活跃,矿震总能量、矿震最大能量和矿震频次均较高;冲击矿压发生后,由于释放了煤岩体中积聚的大量弹性能,矿震能量和矿震次数迅速降低.矿震分区监测冲击矿压方法快速准确地反映出采掘区域矿震变化趋势,以便对冲击危险进行预测并及时采取解危措施.the law of The maximum dynamic response range of failure subjected to an impulse load was ascertained based on earthquake energy attenuation in geomaterials, a zoning monitoring method of microseismic （MS） premonition was presented. Through further development of CAD based on VB software, projection drawing onto mining map and zoning statistic of MS monitoring results were realized. According to the MS signals before two rock bursts of Gucheng Coal Mine, some rules of MS premonition were obtained by zoning monitoring. The results show that the MS is activity before rock burst, the MS signals are very high in total energy, maximum energy and frequency. The energy and frequency of MS decrease rapidly after rock burst because a lot of energy is released. To sum up, the method of zoning monitoring is useful in promoting the forecast of rock burst.

关 键 词：矿震 前兆异常特征 分区监测 冲击矿压 预测预报 

分 类 号：TD324[矿业工程—矿井建设]