深部厚煤层综采工作面冲击地压防治技术

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

深部厚煤层破裂后的体积膨胀产生的"应力集中"易造成大范围的冲击。唐口煤矿5304工作面煤层厚、埋深近千米,其煤层及其顶板均具有冲击倾向性。从改变或消除引起冲击地压的主导因素角度出发,提出了冲击地压的4个治理原则:降低、转移、避开和抵消应力条件;提前释放能量;消除物质条件;控制诱发因素。采用区域解危减震措施与局部解危减震措施相结合的冲击地压防治技术,降低、改变或消除引起冲击地压的主导因素并进行了效果检验,有效保证了5304工作面的安全回采。

＂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.