In Deep Mining Working Face Rock Burst Evaluation by Multifactor Coupling Method

The impact of the rock burst to the deep mining working face has been a serious problem for a long time. According to the geological structure and actual production situation in 3201 working face, this paper used the method of multifactor coupling to divide the latent dangerous area and the dangerous level affected by mining and determine the level of rock burst danger. The results of the study show that the red beds will be disturbed during the process of mining, and the red beds may be fractured in the overlying strata of the coal seam, which may lead to the rock burst. The 3201 working faces were affected by the fault FX2, fault F2-2 and the main roof which was fractured, and the 3201working faces were evaluated by the method of multifactor coupling. The conclusion that comes to is the dangerous area at the distance 180 - 250 m to the open-off cut at the process of mining. Through the practice in 3201 working faces, this paper used the technology of micro-seismic monitoring to verify the scientific and practical of the division of the dangerous area and the dangerous level. The study is helpful to the improvement of the accuracy of the forecasting to the rock burst, and finally to realize the safe mining in 3201 working face.