摘要
常村煤矿为高瓦斯矿井,3号煤层渗透性差,为提高3号煤层瓦斯抽采效果,必须对低渗透性煤层采取有效的增透措施。为此,本论文研究3号低渗煤层水力割缝增透技术,确定了现场试验钻孔参数及其布置方式。研究表明：水力割缝增透技术可使瓦斯抽采流量可提高3-3.75倍,高浓度抽放时间延长1.2倍,因此水力割缝增透技术可取得较理想的瓦斯抽排效果。
Changcun Mine is a high gas mine,the No.3 coal seam with poor permeability. In order to effectively increase the permeability of No.3 coal seam and improve gas drainage effect,permeability measures must be taken to solve Low permeability of the coal seam. Study of hydraulic cutting seam in low permeability No. 3 coal seam was carried out,drilling parameters and their arrangement on experiment site were settled. The study showed that hydraulic cutting seam permeability improvement technology improved the gas drainage quantity by 3 -3.75 times,high concentrations of drainage time extended to 1.2 times,the technology got good effect of gas drainage.
出处
《煤炭与化工》
CAS
2015年第12期12-14,共3页
Coal and Chemical Industry
基金
国家自然科学基金面上项目(51374083)
关键词
低渗透煤层
增透
水力割缝
瓦斯抽放
low permeability coal seam
permeability improvement
hydraulic cutting seam
gas drainage
