摘要
为了提高滴道盛和矿30^#工作面瓦斯抽采钻孔间距布置的合理性，优化抽采效果，以钻孔瓦斯自然涌出量为指标，在不同孔间距条件下开展钻孔瓦斯抽采有效半径的测试。结果表明：采用瓦斯流量法对该煤层钻孔瓦斯有效抽采半径进行测试是可行的，抽采60d时，其有效抽采半径为2．84m；抽采90-180d时，有效抽采半径为3．22～3．89m。
In order to improve the rationality of gas drainage borehole space layout and optimize drainage effect in 30# working face of Didaoshenghe mine. The effective radius of gas drainage was tested under different borehole spacing condition by using the natural gas emission as the index. The results show that it is feasible to use the gas flow method to test the effective gas drainage radius in the coal seam. The effective gas drainage radius is 2.84 m after draining 60 d, and the effective gas drainage radius is 3.22-3.89 m when the pumping time is 90-180 d.
出处
《煤炭技术》
CAS
北大核心
2016年第12期235-237,共3页
Coal Technology
关键词
钻孔
瓦斯抽采
抽采半径
瓦斯流量法
borehole
gas drainage
drainage radius
gas flow method
