娘子关泉域岩溶水SO42-、δ34S特征及其环境意义

赵春红; 梁永平; 卢海平; 唐春雷; 申豪勇; 王志恒

doi:10.11932/karst20190604

娘子关泉域岩溶水SO42-、δ34S特征及其环境意义

doi: 10.11932/karst20190604

1.
中国矿业大学环境与测绘学院，江苏徐州 221116/中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室，广西桂林 541004
2.
中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室，广西桂林 541004

基金项目: 国家自然科学基金项目（41672253）；国家重点研发计划(2017YFC0406104)；中国地质调查局地质调查项目（DD20190334；DD20160242）

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出版历程
- 发布日期: 2019-12-25

Chemical characteristics and environmental significance of SO42- and sulfur isotope in the karst watershed of the Niangziguan spring，Shanxi Province

1.
School of Environment Science and Spatial Informatics，China University of Mining and Technology，Xuzhou，Jiangsu 221116， China/Institute of Karst Geology, CAGS / Key Laboratory of Karst Dynamics, MNR& GZAR, Guilin, Guangxi 541004, China
2.
Institute of Karst Geology, CAGS / Key Laboratory of Karst Dynamics, MNR& GZAR, Guilin, Guangxi 541004, China

摘要

摘要: 在分析区域地质、水文地质条件及水化学同位素的基础上，研究了山西娘子关泉域岩溶水的SO42-、硫同位素分布特征。研究表明：（1）泉域西北、西南地区岩溶水的SO42-主要来源于石膏的溶解；（2）泉域中部汇流区岩溶水的SO42-含量高而δ34S值低，其中的SO42-主要来源于煤系矿坑水，这是因为温河、桃河及南川河沿岸的岩溶水接受了被矿坑水污染的河水的渗漏补给以及部分地区受到钻孔串层污染；（3）娘子关泉群中城西泉水中的SO42-主要来源于煤系矿坑水，而五龙泉和集泉站水中的SO42-主要来源于石膏的溶解；（4）泉域东北部及东部河流沿岸以外的地区，岩溶水中的SO42-主要来源于大气降水、石膏溶解，并受到所处地层岩性的影响。
- 水化学特征 /
- 硫同位素 /
- 岩溶水 /
- 娘子关泉域
Abstract: The Niangziguan spring watershed is located in the hinterland of the Taihang mountains, eastern Shanxi Province, with an area of 7,217 km2. The middle Ordovician limestone dominates its aquifer group, and the lower Ordovician is the aquifer floor of the aquifer system in most areas except the drainage area and part of the recharge area. The middle-upper Cambrian aquifer formation is mainly located in the eastern and northeastern margins of the spring watershed. The karst groundwater in the spring area is supplied by the recharge of atmospheric precipitation infiltration and river leakage, and the Niangziguan spring and karst water exploitation are the discharge sites. The karst groundwater in Niangziguan spring is the primary source of water supply in Yangquan City, which accounts for more than 70% of the total water intake in the city. In recent years, the total hardness and sulfate radical of karst groundwater in this spring area have increased, and the water quality has been deteriorating. Therefore, it is very important to clarify the characteristics and sources of sulfate in karst groundwater of the spring area. On the basis of previous studies, this work tests and analyzes the chemical composition and sulfur isotope of karst water in the Niangziguan spring area were tested and analyzed, and studies the influencing factors of hydrochemical characteristics and the source of sulfate in karst water to provide scientific basis for the development and protection of karst water. The research shows that， (1) SO42- of karst water in the northwest and southwest of the watershed is mainly derived from the dissolution of gypsum. (2) The karst water near the Wenhe /Taohe /Nanchuanhe rivers of the central confluence area is recharged by the river water which is polluted by the mine pit water, or polluted by the drilling string in some areas. In the karst water, SO42- mainly comes from the coal mine water. (3) The SO42- in the Chengxi spring is mainly derived from coal mine water, while SO42- of the Wulong spring and Jiquan spring is mainly derived from the gypsum dissolution. (4) In the northeast of the spring and the east of the river, SO42- comes from meteoric precipitation and gypsum dissolution, and is also affected by stratum lithology.
- hydrochemical characteristics /
- sulfur isotope /
- karst water /
- Niangziguan spring area

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