声发射技术在地压监测中的应用  

Application of acoustic emission technology in monitoring of underground pressure

作　　者：张洋[1,2] 李占金[1,2] 李示波[1,2] 张艳博[1,2] 付振 

机构地区：[1]河北联合大学矿业工程学院,河北唐山063009 [2]河北矿业开发与安全技术重点实验室,河北唐山063009 [3]中煤平朔集团有限公司井工一矿,山西朔州036006

出　　处：《工矿自动化》2013年第6期10-12,共3页Journal Of Mine Automation

基　　金：国家自然科学基金资助项目(51174071);河北省自然科学基金资助项目(E2012209047);河北省高等学校科学技术研究重点项目(ZH2012072)

摘　　要：对某矿的采空区围岩试样进行了单轴压缩声发射实验,得到了岩石破坏时能率、事件率等声发射参数值,根据这些数值对声发射监测系统参数进行了设置;通过对声发射监测系统长期运行结果的统计,总结出了井下多种活动即岩石声发射、打钻、爆破、人工破碎大块矿石、放矿、敲击的波形及各类波形的参数范围;确定了以能率、事件率为特征的采空区失稳判据,为判断地压灾害提供了可靠依据。Through uniaxial compression acoustic emission experiments to goaf surrounding rock sample of a Mine, acoustic emission parameter values such as energy rate and event rate were obtained when rock failure. According to these values, parameters of acoustic emission monitoring system were set. Through statistics for long-term operation result of the acoustic emission monitoring system, waveforms of various underground activities namely rock acoustic emission, drilling, blasting, artificial crushing of large ore, ore drawing and percussion and parameter range of all kinds of the waveforms were summarized. Instability criterion of the goaf with characteristics of the energy rate and event rate were determined, so as to provide a reliable basis for judgment of underground pressure disaster.

关 键 词：采空区 地压监测 声发射 声发射事件率 声发射能率 

分 类 号：TD324[矿业工程—矿井建设]