Real-Time Monitoring and Characterization of Microseismic in Coal Mining Working Face
High impact ground pressure coal mining is highly susceptible to production safety accidents,which seriously restricts the development of coal resources.Microseismic monitoring technology can effectively reflect the damage characteristics of the surrounding rock and provide early warning for coal mine production.The IMS microseismic monitoring system was used to monitor the deformation and damage of the working face of the Makou coal mine in real time,and the change process of microseismic parameters such as microseismic event rate,apparent volume,energy index,Schmidt number,b-value and seismic response coefficient and their relationship with the damage of the surrounding rock were studied.It is shown that some of the parameters have obvious precursors before large-scale damage,and the prediction accuracy is divided by the above parameters,with Schmidt number having the highest prediction sensitivity,b-value the second and energy index the third.
microseismic monitoringMakou coal minecoal mining working face
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