摘要
为治理首山一矿上隅角瓦斯超限,采用高抽巷对采空区瓦斯进行抽采,根据倾向覆岩裂隙分布特征,对高抽巷合理布置层位及其与回风巷合理平距进行了理论计算,并依据综采工作面初采期矿压显现特征,建立初采期覆岩裂隙发育模型,对高抽巷的合理终巷位置进行计算。结果表明:高抽巷位置对采空区瓦斯抽采具有重要影响,确定首山一矿高抽巷布置的合理位置应为:与回风巷内错平距16~20 m(中对中),与回风巷垂距保持20~25 m;终巷最佳位置为距离开切眼水平距离为80 m。
In order to control the upper corner gas overlimit of Shoushan No.1 Mine,upper level drainage-way was adopted to extract gas from the goaf,according to the distribution characteristics of inclined overburden fractures,rational layout of upper level drainage-way a reasonable horizontal distance and tailentry has carried on the theoretical calculation,on the basis of fully-mechanized working face in the early mining stage pressure characteristics,to build a new model of rock fracture development,calculate the reasonable final lane position for upper level drainage-way. The results showed that the location of upper level drainage-way has an important influence on gas drainage in goaf,it is determined that rational layout position of upper level drainage-way in No.1 Shoushan Coal Mine is drainage 16 ~ 20 m( medium to medium) offset in the tailentry,keep the vertical distance of 20 ~ 25 m with the return airway; the optimal position of the terminal line is 80 m horizontal distance from the open-off cut.
作者
徐永佳
XU Yongjia(Henan Pingbao Coal Mine Corporation Ltd.,Pingdingshan 467000,China)
出处
《煤炭科学技术》
CAS
北大核心
2018年第11期93-100,共8页
Coal Science and Technology
关键词
高抽巷
布置层位
覆岩裂隙
瓦斯抽采
upper level drainage-way
layout level
strata fissures
gas drainage
