高位裂隙带瓦斯抽放技术应用分析

Application and Analysis of Gas Drainage Technology in High Fracture Zone

基于1301工作面回采期间上隅角瓦斯超限,采空区瓦斯涌出量大等现象,李村煤矿抽采科分析了瓦斯主要来源于工作面顶板上覆岩层裂隙带,提出了高位裂隙带瓦斯抽放技术,通过实际应用效果分析发现,高位裂隙带瓦斯抽放技术使顶板裂隙瓦斯含量降低至7%,采空区内瓦斯浓度控制在3%以下,上隅角瓦斯浓度控制在0.5%以下,取得了显著应用成效。

Based on the phenomena of excessive gas in upper corner and large gas emission in goaf during the mining period of 1301 working face,the extraction Department of Licun Coal Mine analyzed that the gas mainly came from the fracture zone of overburden strata on the work-ing face roof,and put forward the gas drainage technology in high fracture zone.Through the analysis of practical application effect,it was found that the gas drainage technology in high fracture zone.The technology can reduce the gas content in roof fissures to 7%,control the gas concentration in goaf to less than 3%,and control the gas concentration in upper corner to less than 0.5%,which has achieved remarkable ap-plication results.