316 / 2018-05-04 10:45:53

In deep mining working face rock burst evaluation by multifactor coupling method

Multi-factor coupling; Micro-seismic monitoring; Dangerous area; Division of the dangerous area

矿山动力灾害 > 岩爆冲击

The impact of the rock burst to the deep mining working face has been a serious problem for a long time. In this paper, according to the geological structure and actual production situation in 3201 working face, using the method of multifactor coupling to divide the latent the dangerous area and the dangerous level which 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 face affected by the fault FX2, fault F2-2 and the main roof which was fractured, and the 3201 working face evaluated by the method of multifactor coupling. The conclusion we come to is the dangerous area at the distance 180-250m to the open-off cut at the process of mining. Through the practice in 3201 working face, using 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.