潘谢矿区深部灰岩水离子来源解析与水循环示踪  

Source analysis and water cycle tracer of deep limestone water ions in Panxie mining area

作　　者：谢毫 查君珍 姜春露[2] 陈永春 安士凯 郑刘根[2] XIE Hao;ZHA Junzhen;JIANG Chunlu;CHEN Yongchun;AN Shikai;ZHENG Liugen(Pingan Mining Engineering Technology Research Institute Co.,Ltd.,Huainan 232001,China;Anhui Province Engineering Laboratory for Mine Ecologica Remediation,School of Resource and Environmental Engineering,Anhui University,Hefei 230601,China)

机构地区：[1]平安煤炭开采工程技术研究院有限责任公司,安徽淮南232001 [2]安徽大学资源与环境工程学院安徽省矿山生态修复工程实验室,安徽合肥230601

出　　处：《中国矿业》2020年第S02期258-264,共7页China Mining Magazine

摘　　要：采集潘谢矿区太灰水和奥灰水共28个水样,通过Piper三线图、因子分析、离子比例系数及氢氧稳定同位素分析,研究矿区深层灰岩地下水离子成分特征及其来源,揭示水岩相互作用与水循环。结果表明:①研究区太灰水为低矿化度水,水化学类型主要为HCO3-Na型和Cl-Na型;奥灰水为高矿化度水,水化学类型主要为Cl-Na型;两含水层为碱性水,常规离子变异系数较小,水环境较为稳定;②太灰水中Na+不仅来源于蒸发岩的溶解,还来源于硅酸盐矿物的风化作用,奥灰水中水岩交互作用以蒸发岩溶解为主;两含水层均发生了阳离子交替吸附作用,太灰水的交替吸附比奥灰水强烈;③太灰水和奥灰水主要源于暖季大气降水的入渗补给,氘盈余均低于全球大气降水氘盈余平均值(10‰),蒸发作用不强烈,空气相对湿度高。A total of 28 water samples were collected from the Taiyuan formation limestone aquifer and Ordovician limestone aquifer in the Panxie mining area.Through the piper three-line diagram,factor analysis,ion scale coefficient and hydrogen and oxygen stable isotope analysis,the characteristics and sources of ions in the deep limestone groundwater in the mining area were studied,and the water was revealed the rock interacts with the water cycle.The results show that:①Taiyuan formation limestone aquifer in the study area is low-salinity water,and the main hydrochemical types are HCO 3-Na and Cl-Na;Ordovician limestone aquifer is high-salinity water,and the main hydrochemical type is Cl-Na type;the two aquifers are alkaline water,the coefficient of variation of conventional ions is small,and the water environment is relatively stable;②Na+in Taiyuan formation limestone aquifer not only comes from the dissolution of evaporite,but also comes from the weathering of silicate minerals.The water-rock interaction in gray water is dominated by evaporite dissolution;alternate cation adsorption has occurred in both aquifers,and the alternate adsorption of too gray water is stronger than that of the Ordovician limestone aquifer;③the Taiyuan formation limestone aquifer and the Ordovician limestone aquifer are mainly derived from warm for seasonal atmospheric precipitation infiltration and replenishment,the deuterium surplus is lower than the average value of global atmospheric precipitation deuterium surplus(10‰),evaporation is not strong,and the relative humidity of the air is high.

关 键 词：太灰水 奥灰水 水化型特征 离子来源 氢氧稳定同位素 

分 类 号：TD74[矿业工程—矿井通风与安全]