301工作面均压抽放采空区瓦斯技术实践  

Technical Practice of Pressure Equalizing Drainage of Goaf Gas in the 301 Working Face

作　　者：赵强 Zhao Qiang(Shanxi Orchid Coalbed Gas Co.,Ltd.,Shanxi Jincheng 048000)

机构地区：[1]山西兰花煤层气有限公司,山西晋城048000

出　　处：《山东煤炭科技》2020年第10期121-122,125,127,共4页Shandong Coal Science and Technology

摘　　要：针对大宁煤矿301工作面采空区瓦斯易涌入回风巷导致瓦斯超限的问题,采用均压抽放法治理采空区瓦斯超限的方案。在留巷与开切眼交汇处、主进风巷与工作面交汇处、开切眼与回风巷交汇处分别设置密闭,同时在留巷安装移动泵抽放采空区瓦斯。试验结果表明:301面Y形回风巷瓦斯浓度降低到了0.28%,风排瓦斯量减少了2.35 m^3/min。In view of the problem that gas in the goaf of the 301 working face of Daning Coal Mine is easy to pour into the return air roadway,resulting in gas overrun,the scheme of controlling the gas overrun in goaf by pressure equalizing drainage method is proposed.At the intersection of left roadway and open off cut,intersection of main air intake roadway and working face,intersection of open off cut and return air roadway,the closed air is respectively set up,and mobile pump is installed in the left roadway to drain gas in goaf.The test results show that the gas concentration of 301 Y-shaped return air roadway is reduced to 0.28%,and the amount of gas discharged by air is reduced by 2.35 m3/min.

关 键 词：采煤工作面 Y形通风 均压 瓦斯抽放 

分 类 号：TD712.6[矿业工程—矿井通风与安全]