任楼煤矿地下水化学组成及其控制因素分析  

Analysis of chemical composition and control factors of groundwater in Renlou Coal Mine

作　　者：陈凯 孙林华 CHEN Kai;SUN Linhua(School of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China;National Engineering Research Center of Coal Mine Water Hazard Controlling,Suzhou University,Suzhou 234000,China)

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001 [2]宿州学院国家煤矿水害防治工程中心,安徽宿州234000

出　　处：《煤炭科学技术》2019年第10期240-244,共5页Coal Science and Technology

基　　金：安徽省高校学科(专业)拔尖人才学术资助项目(gxbjZD48)

摘　　要：不同含水层中地下水化学信息的差异性是进行水源识别的关键所在。为查明任楼煤矿地下水化学组成及其控制因素,采用离子比值及数理统计方法对4个含水层水样的主要离子浓度进行分析。结果表明,矿区地下水样品中阴离子以Cl-和SO2-4为主,而阳离子以Na+和K+为主,水化学类型主要为Na-Cl型,但不同含水层水样的主要离子浓度存在明显差异,表明其控制因素互不相同。基于离子比值分析,研究区主要含水层中地下水离子主要来源于硅酸盐的风化、蒸发盐(主要为盐岩)、碳酸盐及硫酸盐矿物的溶解作用,同时伴有不同程度的离子交换。因子分析显示,松散层第四含水层水处于相对开放的环境,硅酸盐的风化及蒸发盐的溶解对二叠系煤系砂岩裂隙含水层水的贡献较大,而石炭系太原组岩溶裂隙含水层和奥陶系岩溶裂隙含水层中地下水化学形成作用以蒸发盐和碳酸盐矿物的溶解为主,此结论通过聚类分析得到了进一步证实。The difference of groundwater chemical information in different aquifers is the key to water source identification.In order to investigate the chemical composition and control factors of groundwater in Renlou Coal Mine,the major ion concentrations of groundwater samples were collected from four aquifers have been analyzed by ion ratios and mathematical statistical methods.The results indicate that the anions in the groundwater samples in the mining area are mainly Cl^-and SO4^2-,the cation is mainly K^++Na^+,the main hydrochemical type is Na-Cl,but the major ion concentrations of water samples in different aquifers are different,which means the chemical control factors of groundwater in each aquifer are distinctive.Based on the ion ratio analysis,the major ion concentrations of the groundwater are controlled by the weathering of silicate and dissolution of the evaporation(halite),carbonate and sulfate minerals,with different extent ion exchange.Factor analysis indicates that the Quaternary aquifer is in the relatively open environment,the Coal bearing sandstone aquifer is dominated by silicate weathering and dissolution of evaporation minerals,and the Carboniferous limestone aquifer as well as the Ordovician limestone aquifer are dominated by dissolution of carbonate and evaporite minerals,and the analysis results are further confirmed by cluster analysis.

关 键 词：水化学 地下水 因子分析 聚类分析 煤矿突水 

分 类 号：P641[天文地球—地质矿产勘探]