Study on Rock Burst Prevention Process of Extra-high Pressure Fixed-point Hydraulic Fracturing in Coal Seam

For the status that lacking of regional pressure releasing methods in the driving of roadway with strong dynamic in coal mine,based on the mechanism of hydraulic fracturing to prevent the rock burst in coal seam,we propose the process of extra-high pressure fixed-point hydraulic fracturing in coal seam for rock burst prevention by researching the long hole controlling hydraulic fracturing.To test the feasibility of technology,industrial experiments were done in Huafeng Coal Mine,with the micro seismic monitoring system,stress dynamic real-time monitoring system and pressure sensors to monitor and analyze micro seismic events,stress variation in coal-rock and pipeline pressure in the experiments,which proved that the technology can reduce the danger of coal seam with rock burst risk.