川东华蓥山废弃矿井水化学特征及影响因素分析  

Analysis of Hydrochemical Characteristics and Influencing Factors of Groundwater in Abandoned Mines in Huayingshan,Eastern Sichuan

作　　者：李青山 杨广焱 康小兵[3] 霍庆林 左蔚 LI Qing-shan;YANG Cuang-yan;KANG Xiao-bing;HUO Qing-lin;ZUO Wei(Sichuan Tianshengyuan Enwironmental Service Co.,Ltd,Chengdu 610036,China;Sichuan Geological Engineering Survey Institute Group Co.,Ltd.,Chengdu 610036,China;State Key Laboratory of Geohazard Prevention&Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]四川省天晟源环保股份有限公司,成都610036 [2]四川省地质工程勘察院集团有限公司,成都610036 [3]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059

出　　处：《四川环境》2023年第3期130-139,共10页Sichuan Environment

基　　金：西南地区废弃矿井酸性废水治理技术应用研究与示范项目(kyxm-2021-004);地质灾害防治与地质环境保护国家重点实验室自主研究项目(SKLGP2018Z018)。

摘　　要：对废弃煤矿酸性矿井水(AMD)、地表水、地下水的水化学特征及影响因素进行分析,可为保护华蓥山水环境提供理论支撑。以广安市华蓥山废弃煤矿群为研究对象,基于水化学参数统计,运用水化学、相关性分析和离子比等方法对水样进行了综合分析研究。结果表明:岩溶水化学类型大多为HCO_(3)-Ca型;非酸性矿井水主要为HCO_(3)-Ca型为主;酸性矿井水主要主要为SO_(4)-Ca和SO_(4)-Na;受酸性矿井水影响的地表水化学类型以SO_(4)-Ca和SO_(4)-Na型为主;酸性矿井水的形成演化除了受溶滤、浓缩、混合及阳离子交换作用外,主要受黄铁矿(FeS_(2))的氧化还原反应影响。研究该区废弃矿井水化学特征及控制因素,将为酸性矿井水治理方案提供理论基础,从而削减入江污染负荷,从“源头”上保护长江生态环境。The analysis of the hydrochemical characteristics and influencing factors of acid mine drainage,surface water and groundwater in abandoned coal mines can provide theoretical support for protecting the water environment of Huaying Mountain.Taking the Huaying mountain abandoned coal mines in Guangan City as the research object,based on the statistics of hydrochemical parameters,the water samples were comprehensively analyzed and studied by using the methods of hydrochemistry,correlation analysis and ion ratio.The results showed that the chemical types of karst water are mostly HCO_(3)-Ca type;the non-acid mine water is mainly HCO_(3)-Ca type;the acid mine water is mainly SO_(4)-Ca and SO_(4)-Na;the surface water affected by acid mine water is mainly SO_(4)-Ca and SOf-Na.The formation and evolution of acidic mine water is mainly affected by the redox reaction of pyrite(FeS_(2))in addition to leaching,concentration,mixing and cation exchange.Studying the chemical characteristics and control factors of the abandoned mine water in this area can provide theoretical basis for the acid mine water treatment scheme,thereby reducing the pollution load into the river and protecting the ecological environment of the Yangtze River from the"source".

关 键 词：废弃矿井 酸性矿井水(AMD) 水化学演化 氧化还原反应 

分 类 号：X523[环境科学与工程—环境工程]