摘要
为科学合理地指导矿井采掘工作面排放钻孔设计,避免盲目布置排放钻孔浪费大量人力、物力,文章采用理论分析和现场实测等综合研究方法,利用钻屑瓦斯解吸指标Δh_(2)测定分析五矿8508工作面进风巷不同孔径条件下的瓦斯排放规律及不同时间、不同深度Δh_(2)值的下降率,从而确定不同孔径钻孔有效排放半径与时间关系,为相似地质条件的矿井瓦斯排放提供参考。
In order to guide the design of discharge borehole scientifically and rationally,and avoid waste of manpower and material resources by blindly arranging discharge borehole,this paper adopts comprehensive research methods such as theoretical analysis and field measurement.Using drill gas desorption index Δh_(2) minmetals 8508 face into the wind lane measurement analysis under the condition of different diameter and gas emission rule and different time,different depth Δh_(2) value decline rate,so as to determine the different aperture drilling effective discharge radius and time relationship,this provide a reference for similar geological conditions of mine gas emission.
作者
高明
GAO Ming(The No.5 Coal Mine of Lu 'an Chemical Group,Yangquan 045000,China)
出处
《煤》
2022年第7期25-29,41,共6页
Coal
关键词
不同孔径
钻屑瓦斯解吸指标
瓦斯排放规律
Δh_(2)下降率
有效排放半径
different aperture
gas desorption index of drill cuttings
gas emission law
decrease rate of Δh_(2)
effective discharge radius
