山寨煤矿巷道底鼓裂隙瓦斯溢出危害及防治

Harm and Prevention of Gas Spillover from Roadway Heaving Floor Fissures in Shanzhai Coal Mine

针对山寨煤矿25031工作面切眼底板底鼓破坏造成的裂隙引起甲烷有害气体溢出及裂隙水突然释放造成有害气体危害,对甲烷等有害气体和底鼓裂隙的防治方法进行了研究与分析。采用巷道底鼓治理、封闭技术、Y型通风和瓦斯抽采消除瓦斯积聚,加强巷道底鼓治理。在一系列措施下,巷道综合治理后瓦斯浓度稳定在0.1%以下,工作面未发生瓦斯超限事故。

A study and analysis were conducted on the prevention and control methods for methane and other harmful gases,as well as the damage caused by the bottom bulge of the cutting floor plate in the 25031 working face of Shanzhai Coal Mine,which caused methane harmful gas overflow and the sudden release of crack water,causing harmful gas hazards.Adopting roadway floor heave control,sealing technology,Y-shaped ventilation,and gas extraction to eliminate gas accumulation,and strengthening roadway floor heave control.Under a series of measures,the gas concentration stabilized below 0.1%after comprehensive treatment of the roadway,and there were no gas exceeding limit accidents in the working face.