基于微震单通道事件的地压灾害预警研究

Research On Ground PressureDisaster Warning Based On Microseismic Single Channel Even

文章针对地下矿山地压灾害监测预警问题,建立了基于微震单通道事件的地压灾害预警模型。通过室内岩石单轴压缩变形破坏累计声发射变化曲线的4个特征阶段,建立以累计微震单通道触发事件数变化曲线为基础的地压灾害预警方法,将累计微震单通道触发事件数曲线分为初始增长阶段、平静阶段、初加速增长阶段、加速增长阶段4个阶段,在加速增长阶段之前发出预警,将该方法应用到国内某矿山,多次成功预警,取得了良好的预警效果,该预警方法可以为类似矿山提供参考。

In this paper,a ground pressure disaster warning model based on microseismic single channel event is established to solve the problem of underground mine ground pressure disaster monitoring and warning.According to the four characteristic stages of the cumulative acoustic emission curve of rock uniaxial compression deformation and failure,the ground pressure disaster warning method based on the cumulative microseismic single channel trigger event number curve is established.The cumulative microseismic single-channel trigger event number curve is divided into four stages,including the initial growth stage,the calm stage,the initial accelerated growth stage and the accelerated growth stage,and the warning is issued before the accelerated growth stage.The method is applied to a mine in China,and the warning has been successfully warned for many times,and good warning effect has been obtained.