摘要
为降低上覆含水层突水引发的煤矿水害事故率,对同生安平煤矿3^(-2)煤层上覆含水层的突水脆弱性进行了评价,基于上覆含水层岩性岩相变化、地质构造、抽水试验结果、突水事件渗流场、地球化学、钻孔泥浆漏失6类地学数据综合分析,构建富水性分区图;将数值计算得到的采动区上方导水裂隙带高度与煤层及上覆含水层的岩层厚度进行对比,构建连通性图。基于突水脆弱性图和模拟结果认为,上覆含水层超前疏放水是上覆含水层突水防治的主要措施。
In order to reduce the coal mine water damage accidents caused by water inrush in the overlying aquifer,the vulnerability of water inrush in the overlying aquifer of the 3-2#coal seam of Tongsheng Anping Coal Mine was evaluated,and the water richness zoning map was constructed based on the comprehensive analysis of the six types of geoscientific data,including lithological changes of the overlying aquifer,geological structure,pumping test results,seepage field of the inrush event,geochemistry,and leakage of mud from the drilling holes;and the numerical calculation-obtained height of the water conducting fissure zone above the mining zone was compared with the thickness of the coal seam and the rock layer of the overlying aquifer to construct a connectivity map.Based on the vulnerability map and the simulation results,it is considered that the overtopping aquifer is the main measure to prevent and control the water inrush in the overlying aquifer.
作者
王敏岐
WANG Minqi(Dimei Datong Co.,Ltd.,Jinneng Holdings Coal Industry Group,Datong 037001,China)
出处
《陕西煤炭》
2025年第5期73-76,109,共5页
Shaanxi Coal
关键词
上覆含水层突水
采矿
突水脆弱性
定量评价
overlying aquifer water inrush
coal mining
water inrush vulnerability
quantitative evaluation
