Prediction System Research In Different Types Of Stope

In recent years, with the coal mine in China more and more come into the deep mining, the rockburst which will influence the mine and the miners’ safety has become one of the main obstacles of mine in our country and even the world.At present,because of the ground pressure of coal mine,many coal mines use the large strip mining,the first mining face used to be solid coal of both sides,then to one side empty face and enven the "isolated island" face.The working faces in different boundary conditions have great difference in the stress field and the rock burst occurrence,So it is necessary for us to combine the different types of mining field and consider the influence of the various factors of rockburst to establish a unified rockburst prediction system.Paper Based on the overlyingmulti-strata spatial structure theory,the dominant stratum theory and numerical simulation technology,compair the overlying strata spatial structure forms, rules and distribution of stress field of some different working faces in Chaoyang which have different different boundary conditions,and directly reflect the different types of mining sites in stress field and the occurrence of rockburst hazard difference.At the same time,by combining the different boundary conditions with the influence of the various factors of rockburst establish a unified rockburst prediction system,which break the previous system application to a specific mining conditions and to a single boundary conditions.In addition,the paper also uses the prediction system to forecast the dangerous areas of 3201 working face in Chaoyang,and combined with the existing microseismic monitoring results and the actual situation of rock bursts to verify the predicted results, and ensure the accuracy of the prediction results.