岩溶发育地区煤层顶底板突水危险性分析  

Analysis on Water Inrush Danger from Roof and Floor of Coal Seam in Karst Growth Area

作　　者：魏中举[1] 余芳芳[1] 李健[1] 

机构地区：[1]六盘水师范学院矿业工程系,贵州六盘水553004

出　　处：《煤炭技术》2017年第8期134-136,共3页Coal Technology

基　　金：贵州省科技厅技术基金项目(黔科合LH字[2015]7607号);贵州省采矿工程特色重点学科(黔学位合字ZDXK[2015]9号);贵州省矿山压力与岩层控制工程中心项目(黔教合KY字[2012]027号)

摘　　要：以贵州某岩溶发育矿区为研究背景,通过对煤矿水文地质条件和矿井充水因素进行分析,并应用高密度电法对矿井水文地质进行了勘查,得出矿区水文条件属于岩溶裂隙充水矿床,顶、底板直接进水。煤层开采后导水裂隙带发育至吴家坪组第2段,并与该段含水层连通起来,对上覆含水层形成卸压作用,该含水层含水量较小补给能力差,顶板突水可能性小。Taking some karst growth mining area in Guizhou provinces for research background, the hydrological conditions of coal mine and water filling factors were analyzed. High-density electrical technique was used in geological prospecting. The mining area hydrology conditions were belong to karst fissured water hydrological conditions, and roof and floor directly influent. The water flowing fractured zone after coal mining grew to Wujiaping Group second section, and it connected with the aquifer, which formed pressure relief function of overlying aquifer. The result is the pressure of aquifer dropped substantially and the danger of water inrush from roof was small.

关 键 词：岩溶 充水因素 煤层顶、底板 突水危险性 

分 类 号：TD74[矿业工程—矿井通风与安全]