摘要
分析了煤层顶板走向布置钻孔瓦斯抽放的基本原理和影响抽放效果的因素。通过对新集二矿1808工作面8煤层顶板走向布置钻孔瓦斯抽放实验,分析了顶板走向布置钻孔的位置确定的关键技术和最佳抽放效果的匹配参数。实践证明,采用顶板走向布置钻孔抽放瓦斯取得了良好的抽放效果,解决了上隅角瓦斯超限问题,保证了工作面的安全回采。
The fundamentai principles of gas drainage by arranging holes along the seam roof strike and the elements of influencing drainage efficiency are analyzed. The key technology of location determination of arranging holes along roof strike and the best matching parameters of drainage efficiency are analyzed through the gas drainage experiment at 1808 face in NO.8 coal seam of Xinji NO.2 Coal Mine. The practice proofs that the gas drainage by arranging holes along roof strike can obtain good results , the problem of corner gas overrun is solved, the safe minning of working face is ensured.
出处
《煤炭技术》
CAS
北大核心
2011年第12期68-69,共2页
Coal Technology
