摘要
矿集区水体水化学形成和驱动因子研究对流域水环境保护和污染修复治理具有重要意义.以大兴安岭南段巴音高勒流域为研究对象,利用水化学Piper和Schoeller图解结合水化学多元统计方法,比较不同水体的水化学组分差异,识别水化学组分相关关系和主要离子的潜在来源.根据水化学离子比值关系、矿物饱和指数计算、水化学组分的空间分布规律和典型剖面离子含量变化曲线揭示研究区水化学形成与演化的驱动因子.结果表明,研究区地表水和泉水样品水化学类型以HCO3-Ca型为主,井水样品水化学类型以HCO3-Ca型、HCO3-Ca+Mg型和HCO3+SO4-Ca型为主,矿区尾矿库周边井水水化学类型由HCO3-Ca型向SO4-Ca型和SO4-Ca+Mg型变化.Gibbs模型和离子比值关系表明,地表水水化学形成受大气降水作用控制;泉水水化学形成受岩石风化和大气降水作用共同控制;井水水化学形成受岩石风化作用控制,蒸发浓缩作用和人为活动影响.人为活动影响分析表明,工矿活动对流域地下水SO42-含量影响明显,工矿活动是巴音高勒流域水化学特征演化的关键驱动因子.
It is of great significance for watersheds water environment protection and remediation to carry out an investigation on the hydrogeochemical evolution of surface water and groundwater in mining areas.Taking the Bayingaole Basin in the Southern Great Xing′an Range as the study area,hydrogeochemical diagram of Piper and Schoeller combing with multiple statistical methods were conducted to identify the differences,correlation between different hydrochemical parameters and clarify the potential sources of major ions in surface water and groundwater.Ion ratio coefficient analysis,characteristic mineral saturation calculation and ions spatial distribution characteristics analysis were used to identify the controlling factors of hydrogeochemical evolution.The results showed that the main water type of spring water and surface water samples was HCO3-Ca type while the main water type of well water samples were HCO3-Ca,HCO3-Ca+Mg and HCO3+SO4-Ca types.The water types of well water around the mine tailings reservoir changed from HCO3-Ca to SO4-Ca and SO4-Ca+Mg types.The Gibbs model and ion ratio coefficient analysis indicated that the main controlling factor of surface water hydrogeochemical evolution was atmospheric precipitation,and controlling factors of the hydrochemistry of spring water were rock weathering and atmospheric precipitation,while the hydrochemistry of well water samples were controlled by rock weathering,affected by human activities as well as water evaporation and condensation.Anthropogenic analysis suggested that the sulfate content of groundwater was greatly impacted by the mining activities and the mining activities were the key driving factors for the changes of hydrochemical characteristics in water system of the study area.
作者
孙厚云
王晨昇
卫晓锋
祝新友
黄行凯
SUN Houyun;WANG Chensheng;WEI Xiaofeng;ZHU Xinyou;HUANG Xingkai(School of Water Resources and Environment,China University of Geoscience,Beijing,100083,China;Beijing Institute of Geology for Mineral Resources,Beijing,100012,China)
出处
《环境化学》
CAS
CSCD
北大核心
2020年第9期2507-2519,共13页
Environmental Chemistry
基金
中国地质调查局国家二级项目(DD20160072)资助
关键词
水化学
离子来源
矿集区
驱动因子
巴音高勒
hydrogeochemistry
ion source
mining area
driving factor
Bayingaole
