Prevention and Control Technology of Gas Accumulation for Technique Roadway at Upper Corner of Fully Mechanized Working Face in Thick Coal Seam

To solve the problem of gas accumulation in the upper corner of all high fully mechanized working face in the thick coal seam, it adopted the comprehensive method of technique roadway ventilation and high drainage drilling technology. This technology was verified through numerical simulation and the field application of working face 1210 in Fenxi Shuguang Coal Mine, it had achieved good results, which provided a new method for gas prevention and control in the upper corner of all high fully mechanized working face in the thick coal seam.