微震监测技术在矿山民采定位中的应用

矿山民采活动带来大量的不明采空区,使得生产作业人员生命安全受到威胁,国家矿产资源严重浪费。微震监测技术是通过检测岩体破坏产生的弹性应力波来定位其发生的震源位置。民采活动一般通过凿岩爆破的方式进行,岩体破坏会产生弹性应力波,因此可以通过震源定位技术找到民采作业区域。研究结果表明,微震监测技术能够很好地探明民采活动区域,在具有民采活动的矿山具有重大的应用价值。

Study on hypocentral location of private mining based on microseismic monitoring technology

This paper mainly expounds the influential factors to the selection of delayed time in millisecond blasting of open-pit mining. Based on the former study in the optimal delayed time, this paper summarizes several theoretical hypothesis and semi empirical mathematical models. Also, emphasis points and mechanism in different influential factors have been discussed. After systematic comparison, different applicable conditions, as well as advantages and disadvantages in different hypothesis are pointed out. Consequently, this paper offers theoretical guidance to the improvement of millisecond blasting in open-pit mining and economic revenue. In the meantime, on the basis of experimental data, millisecond blasting shows a better effect than traditional blasting.