摘要
介绍了特大煤样采用水力割缝提高瓦斯渗透率的实验研究 .实验表明 ,割缝能提高瓦斯的排放量 ;当埋深 4 0 0m时 ,割缝较钻孔的瓦斯排放量提高 2 5 % ;相同埋深的煤层 ,割缝后 ,初期瓦斯排放速度急增 ,为钻孔的 2 0～ 2 5倍 .
The testing research about enhancing permeability rate by hydraulic cutting seam on outsize coal sample is introduced. This research shows that permeability capacity could enhance by hydraulic cutting. The permeability capacity increase by 25% by cutting seam than by drilling under 400 m degree of depth, the initial permeability rate increase by 200%～250% under same degree of depth. This study aids to develop pumping gas from hard permeability coal seam and exploiting coal gas.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2002年第1期50-53,共4页
Journal of China Coal Society
基金
国家杰出青年基金资助项目 (5 962 5 40 9)
山西省自然科学基金资助项目 (9810 2 5 )
关键词
低渗透煤层
水力割缝
钻孔
瓦斯渗透率
瓦斯排放
low permeability coal seam
hydraulic cutting seam
bore
rate of gas permeability
