摘要
系统采集了哈拉沟煤矿20组不同埋深的矿井水,分析了高氟矿井水的含量分布和空间特征,并探讨其来源和形成机制。研究结果表明,哈拉沟煤矿矿井水中F-浓度范围为0.01~12.72 mg/L,平均值为2.96 mg/L,有55.00%的样品超过了GB5749-2022《生活饮用水卫生标准》。高氟矿井水的赋存埋深为125~225 m,主要赋存于3-1煤矿井水中。高氟矿井水的形成主要受含氟矿物的溶解控制,方解石和白云岩的溶解饱和、阳离子的交换作用、蒸发浓缩和竞争吸附作用也是促进高氟矿井水形成的重要原因。
In this study,20 mine water samples were collected in August and September 2022 from the Halagou coal-mining district,Shanxi,China.Samples were analyzed to investigate the distribution,geochemical behavior,and formation mechanisms of high-fluoride mine water.The F-concentrations in the mine water samples ranged from 0.01 to 12.72 mg/L,with a mean value of 2.96 mg/L.The F-concentrations in 55.00%of the mine water samples exceeded China’s national standards for drinking(1.00 mg/L).The results show that the high-F-mine water is mainly distributed in 3-1 coal mine water and in the depth of 125~225 m,respectively.The weathering of F-bearing minerals was the main source of F-in the mine water.Dissolved saturation of calcite and dolomite,evaporation,cation exchange and competitive effect were considered to have promoted elevated F-concentrations in study area.
作者
刘波
王彦堂
郝春明
LIU Bo;WANG Yan-tang;HAO Chun-ming(Halagou Coal of Shenhua Shendong Coal Group Co.,Ltd.,Shenmu,Shaanxi 719315,China;North China Institute of Science and Technology,Sanhe,Hebei 065201,China)
出处
《煤炭加工与综合利用》
CAS
2023年第6期94-100,共7页
Coal Processing & Comprehensive Utilization
基金
河北省自然科学基金项目(D2021508004)
“煤炭开采水资源保护与利用”国家重点实验室开放课题资助项目(SHJT-17-42.17)。
关键词
氟化物
矿井水
分布特征
形成机制
氢氧同位素
fluoride
mine water
enrichment mechanism
spatial distribution
hydrogen and oxygen isotopes
