| 山东新巨龙煤矿区场地高TDS地下水水化学特征及成因机制 |
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| 引用本文： | 张玉卓,徐智敏,张莉,吕伟魁,袁慧卿,周丽洁,高雅婷,朱璐璐.山东新巨龙煤矿区场地高TDS地下水水化学特征及成因机制[J].煤田地质与勘探,2021,49(5):52-62. |
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| 作者姓名： | 张玉卓 徐智敏 张莉 吕伟魁 袁慧卿 周丽洁 高雅婷 朱璐璐 |
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| 基金项目： | 国家重点研发计划项目2019YFC1805400中央高校基本科研业务费专项资金项目2020ZDPY0201 |
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| 摘 要： | 针对山东巨野新巨龙煤矿区地下水高TDS的现状，基于历史水质资料和取样测试结果，运用Piper三线图、相关性分析、氢氧同位素、Gibbs图解、离子比值与饱和指数等方法，探究其高TDS地下水水化学特征及成因。结果表明:随着建井和煤矿开采，研究区水化学环境发生改变，水化学类型不再是单一的SO4-Na型，深层灰岩水的类型中出现SO4·HCO3-Na和SO4-Ca·Mg型；研究区高TDS地下水的形成主要是因为含水层水动力条件差，高温水岩作用强，溶滤、蒸发浓缩作用明显，同时存在一定程度的反向阳离子交换作用；地下水体中白云岩和方解石表现为沉淀状态，石膏和盐岩处于溶解状态，是地下水主要成分Na+和SO42-的主要来源。研究成果不但为研究矿井水的构成、揭示煤矿区地下水污染及多场耦合的地下水演化过程和成因机制提供依据，还可为煤炭开采水害防治和矿井水处理利用奠定基础。
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| 关 键 词： | 煤矿区场地 高矿化度 水化学特征 水化学成因 离子比值 饱和指数 |
| 收稿时间： | 2021-01-19 |
Hydrochemical characteristics and genetic mechanism of high TDS groundwater in Xinjulong Coal Mine |
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| Abstract: | Based on historical water quality data and sampling test results, using Piper three-line diagram, correlation analysis, hydrogen and oxygen isotope, Gibbs diagram, ion ratio and saturation index, etc., the hydrochemical characteristics and genetic mechanism of the groundwater with high TDS in Xinjulong Coal Mine area were explored. The results show that with the proceeding of mine construction and coal mining, the water chemistry environment in the study area has changed. The water chemistry type is no longer a single SO4-Na type, with SO4·HCO3-Na and SO4-Ca·Mg type appearing in the deep limestone water. The high-TDS groundwater in the study area is mainly caused by poor hydrodynamic conditions in the upper layers, strong high-temperature water-rock action, obvious leaching, evaporation and concentration, and a certain degree of reverse cation substitution and exchange. The dolomite and calcite in the groundwater are in a precipitated state, and gypsum and salt rock are in a dissolved state, which are the main sources of Na+ and SO42- in groundwater. The above conclusions not only provide a basis for studying the composition of mine water, revealing the evolution process and formation mechanism of groundwater pollution and multi-field coupling in coal mining areas, but also lay the foundation for coal mining water hazard prevention and mine water treatment and utilization in coal mining. |
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