鹤壁矿区奥陶系灰岩地下水水文地球化学特征及反向模拟  

Hydrogeochemical characteristics and its reverse simulation of Ordovician Limestone groundwater in Hebi Mining area

作　　者：武亚遵[1,2] 潘春芳 林云 曹飞龙[1] 王子杰 WU Yazun;PAN Chunfang;LIN Yun;CAO Feilong;WANG Zijie(School of Resources ＆ Environment,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region,Jiaozuo 454000,China)

机构地区：[1]河南理工大学资源环境学院,河南焦作454000 [2]中原经济区煤层(页岩)气河南省协同创新中心,河南焦作454000

出　　处：《水资源与水工程学报》2018年第4期25-32,40,共9页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金项目(41602265;41502224);河南省高等学校重点科研项目(16A170012)

摘　　要：为探讨采矿活动对岩溶地下水水质的影响,以鹤壁矿区奥陶系灰岩地下水为研究对象,基于不同时期岩溶地下水水化学资料,采用Piper图结合离子组合比例分析法,分析矿区岩溶地下水主要组分的物质来源和水岩相互作用过程,并借助PHREEQC软件对其进行了反向水文地球化学模拟。结果表明:研究区岩溶水水化学类型主要为HCO_3-Ca·Mg型、HCO_3·SO_4-Ca·Mg型和SO_4·HCO_3-Ca·Mg型。主要水岩作用为碳酸盐岩、石膏和岩盐的溶解与阳离子交替吸附作用。煤矿区的岩溶水水质受采煤活动影响,水中SO_4^(2-)、Cl^-与TDS的含量较高,且采矿活动对水质的影响随时间增强。The Ordovician limestone in Hebi mining area was taken as example to study the influence of mining activities on karst groundwater quality.Based on the hydrochemical data of karst groundwater in different periods,this paper analyzed the source of main components of karst groundwater and the process of interaction between water and rock using the Piper diagram and ion combination analysis method.The reverse hydrogeochemical simulation of Ordovician karst groundwater was carried out using the PHREEQC software.The results show that the chemical types of karst water in studied area are mainly HCO3-Ca·Mg,HCO3·SO4-Ca·Mg and SO4·HCO3-Ca·Mg.The main water-rock processes are dissolution of carbonate rock,dissolution of gypsum and rock salt,and alternating adsorption of cations.The water quality of karst water in coal mining area was affected by coal mining activity,the contents of SO4（2-）、Cl and TDS in water are higher and the influence of mining activity on water quality increases with time.

关 键 词：岩溶地下水 水化学特征 Piper图 主成分分析 反向水文地球化学模拟 鹤壁矿区 

分 类 号：P641[天文地球—地质矿产勘探]