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新疆阿舍勒铜矿矿体赋存比较浅,前期开采留下大量的采空区,随着矿山开采方法多样化,造成矿山地压活动突出。为预测预报800m中段以上和700m中段以下采空区活动,矿山建立了一套24通道微震监测系统,用多次测试爆破调试系统对事件的定位精度,最好精度达到7.1m。通过对微震事件活动性b值和微震体变势一阶差分的变化研究,分析震源能量变化,圈定能量集中区域,对矿山的地压灾害进行预测预报,为矿山安全生产提供了技术保障。
The Ashele copper ore body in Xinjiang is relatively shallow, leaving a large number of goafs in the early stage of mining. With the diversification of mining methods, the underground pressure in the mine is prominent. In order to predict and forecast the goaf activity above the mid-800m and the mid-700m, a set of 24-channel microseismic monitoring system was set up in the mine, and the precision of event location was tested with the multi-test blasting debugging system with the best precision of 7.1m. Based on the study of the first-order difference of the b value of the microseismic event and the first-order difference of the microseismic body potential, the change of source energy is analyzed, the energy concentration area is delineated, and the prediction and prediction of the underground pressure disaster of the mine is carried out, providing technical support for mine safety production.