煤矿安全2024，Vol.55Issue(7)：188-197,10.DOI:10.13347/j.cnki.mkaq.20231406
转龙湾煤矿高氟地下水水化学特征及成因分析
Hydrochemical characteristics and cause analysis of high fluoride groundwater in Zhuanlongwan coal mine
摘要
Abstract
In order to gain insight into the hydrochemical characteristics and formation mechanism of high fluoride groundwater in Zhuanlongwan Coal Mine,we conducted a comprehensive analysis of 48 samples including quaternary groundwater(QGW),sand-stone groundwater(SGW),and mine water(MGW)using statistical analysis and hydrochemical methods.The findings demonstrate that the groundwater in Zhuanlongwan Coal Mine generally exhibits weak alkalinity,with predominant cations comprising of Ca2+and Na+,and anions consisting of HCO3-and Cl-.The mean mass concentration of SO4 2-,Cl-,TDS,pH,and CO3 2-in groundwater fol-lows the order of MGW>SGW>QGW,whereas HCO3-and F-exhibit the trend of SGW>MGW>QGW.Specifically,the average mass concentration of F-in QGW,SGW,and MGW is 0.76 mg/L,4.55 mg/L,and 4.35 mg/L,respectively.Notably,most samples from SGW and MGW significantly exceed the permissible F-concentration threshold of 1.0 mg/L.The hydrochemical type of low fluoride(ρF-<1 mg/L)groundwater is primarily identified as HCO3-Ca·Mg,whereas,the hydrochemical types of high fluoride groundwater(ρF->1 mg/L)are mainly HCO3-Na(35.42%)and SO4·Cl-Na(45.83%).The dissolution of fluorinated minerals serves as the main source of F-in the high fluoride groundwater of Zhuanlongwan Coal Mine.Moreover,cation exchange,competitive ad-sorption,as well as the dissolution and precipitation of dolomite and calcite,are significant factors influencing the occurrence of high fluoride groundwater.关键词
地下水/水化学特征/高氟/形成机制/转龙湾煤矿Key words
groundwater/hydrochemical characteristic/high fluoride/formation mechanism/Zhuanlongwan Coal Mine分类
矿业与冶金引用本文复制引用
齐俊铭,刘久潭,王保齐,李廷,朱敬,高波,乔斌,谷允鹏..转龙湾煤矿高氟地下水水化学特征及成因分析[J].煤矿安全,2024,55(7):188-197,10.基金项目
山东省自然科学基金资助项目(ZR2021QD048) （ZR2021QD048）
山东省博士后创新资助项目(202103019) （202103019）
