Research on Advanced Control Technology of Coal Mine Rock Burst Based on Active Presplitting

In view of the difficult problem of rock burst prevention and control caused by intact coal body structure and stress concentration under the coupling condition of high gas and weak rock burst in Binxian Shuiliandong Coal Mine, an active presplitting advanced intervention control technology is constructed, hydraulic fracturing and blasting presplitting collaborative parameters are optimized and designed, and on-site industrial tests are carried out. Through quantitative comparative analysis of multi-dimensional data such as microseismic monitoring, roof displacement observation, support stress monitoring and others, the results indicate that the frequency of high-energy microseismic events in the presplitting area is decreased by 62.8%, and the cumulative impact energy release is reduced by 65.8%; The roof subsidence speed and the convergence speed of the roadway side are decreased by 56.6% and 57.1% respectively, and the fluctuation amplitude of the bracket working resistance is decreased by 55.8%. The research shows that this active presplitting technology can effectively regulate and control the release of impact energy, and provides a reliable technical support for the pre control design of rock burst in high gas and weak rock burst coupled mines.