冲积层底部含水层下开采防水煤岩柱留设分析  

Analysis of waterproof coal and rock pillar for mining under aquifer at the bottom of alluvium

作　　者：刘明 Liu Ming(CCTEG Ecological Environment Technology Co.,Ltd.,Beijing 100013,China;CCTEG Tangshan Research Institute,Tangshan 063012,China)

机构地区：[1]中煤科工生态环境科技有限公司,北京100013 [2]中煤科工集团唐山研究院有限公司,河北唐山063012

出　　处：《矿山测量》2021年第5期8-11,共4页Mine Surveying

基　　金：唐山市科技计划项目(19150251E);国家重点研发计划资助项目(2016YFC0501105)。

摘　　要：文中通过对某矿第四系底部卵砾石层水文条件及12煤层覆岩结构分析,结合该矿覆岩导水裂缝带实测结果,参照厚煤层分层开采经验公式和其它矿区厚煤层分层开采实践及覆岩导水裂缝带实测成果,对该矿12煤层分层开采条件下覆岩导水裂缝带高度进行了预计,并最终确定了留设的防水煤岩柱尺寸。Based on the analysis of the hydrological conditions of the gravel layer at the bottom of the Quaternary System and the overburden structure of 12 coal seam in a mine,combining with the measured results of the water flowing fracture zone of overburden in the mine,and referring to the empirical formula for slicing mining in thick coal seams,the mining practice for slicing mining in thick coal seams in other mining areas,and the measured results of the water flowing fracture zone of overburden,the height of the water flowing fracture zone of overburden was predicted under the condition of the slicing mining of 12 coal seam in this mine,and finally,the size of the waterproof coal and rock pillar was determined.

关 键 词：导水裂缝带 防水煤岩柱 含水层 安全开采 

分 类 号：TD325[矿业工程—矿井建设]