哈拉沟煤矿高氟矿井水分布特征和形成机制刘波1,王彦堂2,郝春明2(1.神东煤炭集团哈拉沟煤矿,陕西神木719315;2.华北科技学院化工安全学院,河北三河065201)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0.01~12.72mg/L,平均值为2.96mg/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125~225m,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。关键词:氟化物;矿井水;分布特征;形成机制;氢氧同位素中图分类号:X703文献标识码:A文章编号:1005-8397(2023)06-0094-07SpatialdistributionandformationmechanismofhighfluorideminewaterinHalagouCoalMineLIUBo1,WANGYan-tang2,HAOChun-ming2(1.HalagouCoalofShenhuaShendongCoalGroupCo.,Ltd.,Shenmu,Shaanxi719315,China;2.NorthChinaInstituteofScienceandTechnology,Sanhe,Hebei065201,China)Abstract:Inthisstudy,20minewatersampleswerecollectedinAugustandSeptember2022fromtheHalagoucoal-miningdistrict,Shanxi,China.Sampleswereanalyzedtoinvestigatethedistribution,geochemicalbehavior,andformationmechanismsofhigh-fluorideminewater.TheF-concentrationsintheminewatersamplesrangedfrom0.01to12.72mg/L,withameanvalueof2.96mg/L.TheF-concentrationsin55.00%oftheminewatersamplesexceededChina’snationalstandardsfordrinking(1.00mg/L).Theresultsshowthatthehigh-F-minewaterismainlydistributedin3-1coalminewaterandinthedepthof125~225m,respectively.TheweatheringofF-bearingmineralswasthemainsourceofF-intheminewater.Dissolvedsaturationofcalciteanddolomite,evaporation,cationexchangeandcompetitiveeffectwereconsideredtohavepromotedelevatedF-concentrationsinstudyarea.Keywords:fluoride;minewater;enrichmentmechanism;spatialdistribution;hydrogenandoxygenisotopes收稿日期:2023-03-28DOI:10.16200/j.cnki.11-2627/td.2023.06.023基金项目: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)作者简介:刘波(1990—)...
