玉舍河下煤层开采安全性分析  

Analyses of upper limit of coal mining under Yushe river

作　　者：陈佩佩[1] 许延春[1] 王恩志[2] 刘晓丽[2] 徐法奎[1] 

机构地区：[1]天地科技股份公司,北京100013 [2]清华大学水利系,北京100084

出　　处：《煤田地质与勘探》2007年第4期46-49,共4页Coal Geology & Exploration

基　　金：国家科技攻关项目(2006BAB16B04)

摘　　要：玉舍河自北北西向南南东穿过玉舍煤矿,垂直地层走向横切含煤地层,影响了河床下及周围煤层的开采。通过现场踏勘、水文地质条件分析、覆岩岩性分析及导水裂缝带高度预计等,对不同开采上限条件下开采后玉舍河及其周围地下水流场的变化情况进行了数值模拟,并计算了不同条件下的矿井涌水量,结合矿井充水因素分析,最终确定,玉舍河两岸100 m范围外、玉舍河下及其两岸100 m范围内当煤层与河流垂直距离>260 m时,可以安全开采;玉舍河下及其两岸100 m范围内,当煤层与河流垂直距离<260 m时,不可以开采。Yushe river through the Yushe coal field from northwest to southeast, transversely through the coal seam, affects coal mirning under five. The authors explored in situ, analyzed the hydrological condition and the lithology of upper rocks and forecasted the height of the water conductive fractured zone. To different upper limits of coal mining under river, authors numerically simulated the change of underwater flow field surrounding the river, and forecasted the inflow of water in coal mine, and fix on appropriate upper limit of coal mining under the river, and partitioned the safe mining area under the river. According to that the safety mining areas are limited with a distance of 100 m away from river bands or in area where with distance 100 m near the bands or under fiver but the perpendicalar distance between coal seam and river is over 260 m.

关 键 词：水下采煤 数值模拟 开采上限 

分 类 号：P641.4[天文地球—地质矿产勘探]