中文摘要：

在全面分析韩城矿区地质与水文地质条件的基础上,应用相关因素分析方法,提出研究区 煤层底板奥灰含水层突水的指标体系,并以多个典型煤矿为例,重点分析了受奥灰含水层威胁最 严重的11号煤层底板突水的影响因素;构建了有效隔水层厚度、褶皱规模、含水层富水性、断层 规模4 个评价指标;采用脆弱性指数评价方法对11号煤层底板突水的危险性进行了分区.

英文摘要：

Based on the comprehensive analysis of the geological and hydrogeological conditions of the study area （Hancheng mining area）, this paper puts forward the index system of water inrush from Ordovician limestone aq-uifer in the coal seam floor by using the relevant factor analysis method. Taking several typical coal mines as ex-amples, the factors influencing water inrush from the No.ll coal seam floor the most threatened by the Ordovician limestone aquifer, are analyzed emphatically. Four evaluation indexes, which are the effective thickness of the con-fining bed, the scale of fold, the water content of the aquifer, and the scale of the fault, are constructed. The water inrush risk zoning map of the No.l l coal seam floor is obtained based on the vulnerability index method.