APPLICATION OF HIGH-LEVEL COAL TUNNEL TO ABSTRACT GAS IN THREE SOFT SEAM IN FULLY MECHANIED COAL CAVING MINING FACE

Gas suction is a fundamental measure to control gas.At present,most high-level suction tunnels are driven in rock stratum and cost much.Suction in coal tunnel is successfully carried out in Peigou Coal Mine,Zhengzhou Coal Mining Group Corp.Ltd.The gas is controlled so that the high output is ensured,and the circumstance of the working face is also improved.Gas suction in high-level coal tunnel is a new way to control gas in three soft coal seam in fully mechanized coal caving mining face.It has great importance to improve safety state and working circumstance as well as to raise economical benefit in mining area with similar conditions.