巨厚松散层下采煤防砂煤岩柱留设的实践  

Coal pillar design and practice concerning quicksand within thick overlying Quaternary sediments

作　　者：朱传峰[1] 

机构地区：[1]淮北矿业集团公司孙疃煤矿筹备处,安徽淮北235121

出　　处：《煤田地质与勘探》2006年第1期19-21,共3页Coal Geology & Exploration

摘　　要：两淮地区的大多煤系被巨厚松散层覆盖,而松散层底部的第四含水层直接覆于煤系之上,威胁煤矿安全生产。为防止“四含”水进入矿井,矿井留设了厚层防水煤岩柱,这使过多的浅部煤炭资源积压。通过淮北地区童亭、桃园、祁东等矿井开采实践,认为巨厚松散层下采煤煤岩柱的留设原则为:初期以防水为主,后期以防砂为主。Quaternary sediments, which are super-thick, overlie most coal-bearing formations in Huaibei and Huainan areas. At the bottom of sediments is No. 4 water-bearing formation, which immediately overlie coal-bearing formations and threatens safe mining operations. Coal pillars have been designed to prevent water flowing into the faces and improper designs contributed much waste of coal reserve. Investigation of mining engineering conducted in Tongting Mine, Taoyuang Mine and Qidong Mine in Huaibei area justifies the following principle of coal pillar design under super-thick sediments for the sake of mining safety： at early stages focusing on water control, and later shifting to quicksand.

关 键 词：巨厚松散层 防砂煤岩柱 开采上限 

分 类 号：TD822.3[矿业工程—煤矿开采]