摘要
针对小常矿3~#煤层瓦斯含量高、钻孔布置不均匀、瓦斯抽采率低等问题,提出用相对压力指标法对小常矿进行瓦斯抽采半径考察研究来提高瓦斯抽采效率。通过对抽采钻孔数据分析,总结得出小常矿3~#煤层在抽采天数达到180 d及以上时,抽采达标的有效抽采半径为1.0 m,当抽采天数达到330 d及以上时,抽采达标的有效抽采半径为1.5 m。
According to the problems of high gas content, asymmetric borehole layout and low gas extraction rate of 3# coal seam in Xiaochang Coal Mine, this paper proposed relative pressure index method to study gas drainage radius of 3# coal seam in Xiao- chang Coal Mine aiming to improve gas extraction rate. By analyzing the data of extraction and borehole, this paper concluded that the effective extraction radius meeting standards was 1.0 m when the extraction time reached 180 d or more, while 1.5 m the nu- mber of days of extraction reached 330 d.
出处
《能源与节能》
2017年第5期56-57,67,共3页
Energy and Energy Conservation
关键词
瓦斯含量
瓦斯抽采率
相对压力指标法
抽采半径
gas content
gas extraction rate
relative pressure index method
extraction radius
