不同冲击启动类型的地音前兆信息识别  

Precursor information identification of rock noise in different startup types of rock burst

作　　者：夏永学[1,2,3] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京市朝阳区100013 [2]煤炭科学研究总院开采设计研究分院,北京市朝阳区100013 [3]煤炭资源高效开采与洁净利用国家重点实验室,北京市朝阳区100013

出　　处：《中国煤炭》2015年第3期49-53,共5页China Coal

基　　金：国家自然科学基金项目(51304116);国家科技支撑计划(十二五)项目(2012BAK09B01-06)

摘　　要：将冲击地压地音前兆信息识别方法建立在冲击地压机理分析的基础上,提高了冲击地压预测预报的理论依据和可靠性。通过对大量现场实测地音数据分析,获得了顶板断裂型、采动高应力型和断层活化型冲击地压的典型地音前兆模式。突变型地音模式适合于用来预测顶板断裂型冲击地压,灵敏性较高;持续稳定型则一般不会出现非稳定的突变状态,适合采动高应力引发的冲击地压预测;波动型地音模式包含类似主震-余震型和前震-主震型两种,适合于断层活化型冲击地压预测。The method of precursor information identification of rock noise was developed on the basis of mechanism analysis of rock burst, and it improved the theoretical basis and reliability of forecast and prediction of rock burst. According to a large number of rock noise data from field measurement, three typical rock noise precursor patterns were confirmed, respectively were roof fracture type, high stressing mining type and fault activation type. Mutant type rock noise pat- tern was suitable for forecasting the rock burst of roof fracture type and it had high sensibility; the sustained and stable type was generally not a non-steady state of mutation and suitable for forecasting the rock burst caused by high stressing mining; the fluctuating type pattern contained similar mainshock-aftershock type and foreshock-mainshock, which was suitable for fault activa- tion type.

关 键 词：冲击地压 发生机理 地音监测 前兆信息 模式识别 

分 类 号：TD324[矿业工程—矿井建设]