Study On The Coupling Law And Prediction Technology Of Mining Impact And Outburst Danger In Isolated Island

With the increasing of mining depth and mining scale day by day, the research on coupling occurrence mechanism and prediction technology of rock impact and outburst in the coal seam with high gas and high in-situ stress has become an important subject that should be to be solved urgently. The main influence factors of rock burst and coal and gas outburst are firstly analyzed in the paper, and then a mechanical model of coupling of burst and outburst is established with acme mutation theory. Based on this model, the conclusion that the coupling mine disaster is a system unstable failure by mining disturbance under the mutual action of in-situ stress, gas press and coal structure is drawn. By the tendency experiment the combined samples of Wu 9.10 coal and roof rock are weak impact trend, and then abutment pressure field along inclination direction and the stress distribution law of mechanical roadway and air entry in the isolated island is simulated with numerical simulation software of FLAC. Besides, subarea forecasting of the isolated island is done using relation measure model and entropy function model. At last, the critical value of predicting indexes is obtained by the synthetical forecasting method and data analysis software of SPSS.