摘要
为了解决寺家庄煤矿15#煤层掘进过程中突出危险性严重、回风流瓦斯浓度大的难题,研究了钻孔合理预抽参数,采用顺层钻孔预抽煤巷条带和钻墙边掘边抽的瓦斯综合治理措施在井下进行试验,结果表明:采用综合治理措施后,掘进期间未发生过突出事故,突出危险性预测指标超标率仅为5.71%,回风流最大瓦斯浓度不超过0.83%,瓦斯治理效果显著。
In order to solve the problem of serious risk in driving face and the high gas concentration of the air return flow in Sijiazhuaug Mine No.15 coal seam , this paper researched the reasonable parameters of the boreholes, the gas comprehensive management measures which inclued excavation and gas drainage simultaneously at coal wall drilling was applied in coal mine. The results showed that after adopting gas comprehensive management measures, it didn＇t occur gas outburst accident during driving process and the exceeded rate of outburst risk presictor was only 5.71%, the maximum gas concentration of the gas return gateway didn＇t exceed 0.83%. The gas control effect was obvious.
出处
《煤炭技术》
CAS
北大核心
2014年第1期103-105,共3页
Coal Technology
基金
国家科技支撑计划资助项目(2007BAB13B01)
关键词
煤与瓦斯突出
抽采负压
封孔深度
顺层钻孔
边掘边抽
coal and gas outburst
negative pressure of gas drainage
sealing hole depth
boreholes along seam
inhal-ing as tunneling
