煤矿现代化
煤礦現代化
매광현대화
COAL MINE MODERNIZATION
2013年
6期
32-34
,共3页
远距离%保护层开采%坚硬顶底板%抽采规律
遠距離%保護層開採%堅硬頂底闆%抽採規律
원거리%보호층개채%견경정저판%추채규률
remote%protection layer mining%hard roof and floor%gas extraction rule
祁东煤矿61、71煤平均间距为44m，属远距离远距离保护层开采，两层煤之间为石英质坚硬砂岩；通过对抽采及未抽采条件下，被保护层71煤层的瓦斯压力、煤层变形量、抽采量、浓度等参数的考察，确定远距离上保护层开采、坚硬顶底板条件下，被保护煤层的瓦斯治理效果及卸压瓦斯抽采规律。
祁東煤礦61、71煤平均間距為44m，屬遠距離遠距離保護層開採，兩層煤之間為石英質堅硬砂巖；通過對抽採及未抽採條件下，被保護層71煤層的瓦斯壓力、煤層變形量、抽採量、濃度等參數的攷察，確定遠距離上保護層開採、堅硬頂底闆條件下，被保護煤層的瓦斯治理效果及卸壓瓦斯抽採規律。
기동매광61、71매평균간거위44m，속원거리원거리보호층개채，량층매지간위석영질견경사암；통과대추채급미추채조건하，피보호층71매층적와사압력、매층변형량、추채량、농도등삼수적고찰，학정원거리상보호층개채、견경정저판조건하，피보호매층적와사치리효과급사압와사추채규률。
In Qidong coal mine the average distance between 71 and 61 coal is 44 m, and it belongs to remote protective layer mining, be-tween two coal layers is hard quartzose sandstone;By investigating the protected layer of 71 coal seam parameters such as gas pressure,coal seam deformation,gas extraction rate and density in either after extraction or not yet, to determine the remote upper protective layer mining un-der the condition of hard roof and floor and the protected coal seam gas control and pressure relief gas extraction rule.
