Rock Burst Prevention and Control Technology of Fully Mechanized Coal Mining Face for Deep Thick Seam

"Stress concentration" generated by volume expansion after the fracture of deep thick coal seam could easily lead to a wide range of rock burst. 5304 working face of Tangkou Coal Mine, with nearly 1 kilometer deep thick seam, its coal seam and roof has burst tendency. From the view of changing or eliminating the dominant cause of rock burst, four principles for controlling the rock burst are proposed: to reduce, transfer, cancel or avoid the stress conditions; to release energy; to eliminate the material conditions; to control the induced factors. With the regional and local measures of weakening rockburst and reducing danger, rock burst prevention and control technology is adopted to reduce or change the dominant causing factor of rock burst. The prevention effect is tested to guarantee the safety production of 5304 mining face.