摘要
以淮南矿业集团谢桥矿1161(3)工作面煤体瓦斯赋存特性为研究基础,研究获得了水力冲孔所需临界水压值12.6 MPa,进行了设备的选型并实施了水力冲孔强化增透工程试验。冲孔后,干管瓦斯最大抽采浓度87.4%,是水力冲孔措施前的1.92倍;单孔瓦斯抽采纯量最大值0.093 4 m3/min,是原始抽采纯量的7.4倍;以瓦斯抽采率35%作为抽采达标指数,达标所需时间缩短了45.83%。
Completing the equipment type selection on the basis of researching on the characteristic of surrounding rock and mine in the 1161(3) working face of Xieqiao coal mine and getting the critical internal water pressure of the borehole hydraulic jet in the end.The maximum of gas pre drainage concentration and purity respectively are 87.4% and 0.093 4 m3/min and it is 1.92 and 7.4 times the original coal;taking the efficiency of gas extraction in 35% as the standard index and reduced by45.83%.
出处
《煤炭技术》
CAS
北大核心
2015年第10期175-178,共4页
Coal Technology
关键词
水力冲孔
穿层钻孔
瓦斯抽采
borehole hydraulic jet
borehole through strata
gas extraction
