基于脆弱性指数法的里必煤矿3号煤层底板突水危险性评价  

Risk assessment of water inrush of No.3 coal seam floor in Libi mining area on the basis of vulnerability index method

作　　者：穆金霞[1] Mu Jinxia(The First Hydrogeological Exploration Team,CNACG,Handan 056004,China)

机构地区：[1]中国煤炭地质总局第一水文地质队,河北邯郸056004

出　　处：《煤炭与化工》2021年第10期56-59,63,共5页Coal and Chemical Industry

摘　　要：在全面分析里必井田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3号煤层底板奥灰含水层突水的指标体系,分析了奥灰含水层突水的影响因素。构建了脆性岩厚度、脆塑岩性比值、构造规模指数、陷落柱分布密度、水压值、含水层富水性6个评价指标。采用脆弱性指数法对3号煤层底板突水危险性进行了分区评价。Based on the comprehensive analysis of the geological and hydrogeological conditions of Libi mining area,this paper puts forward the index system of water inrush from Ordovician limestone aquifer in the coal seam floor by using the relevant factor analysis method.Six evaluation indexes,including the thickness of brittle rock,the ratio of brittle plastic lithology,the index of structural scale,the distribution density of collapse column,the value of water pressure and the water content of aquifer,were established.The water inrush risk zoning map of the No.3 coal seam floor was obtained based on the vulnerability index method.

关 键 词：底板水害 奥灰突水 脆弱性指数法 层次分析法 危险性评价 

分 类 号：TD74[矿业工程—矿井通风与安全]