柳林泉域滞流区岩溶水的热源及其Na+、Cl-来源探讨
柳林泉域滞流区岩溶水以高温、高Na+和Cl浓度为主要特征。文章在区域地质及水文地质条件分析基础上,采用化学计量学原理,判断了该区岩溶水的热源及Na+和Cl-的来源。结果显示:在泉域的补给区、径流区和排泄区的上青龙、龙门会、杨家港和寨东泉组,岩溶水中的Na+和Cl主要来源于岩盐的溶解,其中多余的Na+可能来自于阳离子交换、黄土中含Na+矿物的溶解及城市污水的排放;滞流区和排泄区的刘家疙瘩泉组岩溶水中高浓度的Na^+和Cl-也主要来自于岩盐的溶解,而多余的Cl-可能由岩溶水中的Na+交换吸附介质中的Ca&2+或Mg^2+所致。西部滞流区岩溶水的热源主要包括地温梯度增热、当地正常地温、岩石中放射性元...
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Published in | 中国岩溶 Vol. 34; no. 6; pp. 570 - 576 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
太原理工大学水利科学与工程学院,山西太原030024
2015
山西省水资源研究所,山西太原030000%太原理工大学水利科学与工程学院,山西太原,030024 |
Subjects | |
Online Access | Get full text |
ISSN | 1001-4810 |
DOI | 10.11932/karst20150605 |
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Summary: | 柳林泉域滞流区岩溶水以高温、高Na+和Cl浓度为主要特征。文章在区域地质及水文地质条件分析基础上,采用化学计量学原理,判断了该区岩溶水的热源及Na+和Cl-的来源。结果显示:在泉域的补给区、径流区和排泄区的上青龙、龙门会、杨家港和寨东泉组,岩溶水中的Na+和Cl主要来源于岩盐的溶解,其中多余的Na+可能来自于阳离子交换、黄土中含Na+矿物的溶解及城市污水的排放;滞流区和排泄区的刘家疙瘩泉组岩溶水中高浓度的Na^+和Cl-也主要来自于岩盐的溶解,而多余的Cl-可能由岩溶水中的Na+交换吸附介质中的Ca&2+或Mg^2+所致。西部滞流区岩溶水的热源主要包括地温梯度增热、当地正常地温、岩石中放射性元素产热和石膏的溶解放热,其贡献率分别为45%、28%、20%和7%。 |
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Bibliography: | Karst groundwater constitutes the major water supply source for industry, agriculture and urban domestic water use for six counties in the Liulin spring basin. The value of the water supply is influenced by high temperature and high concentrations of sodium (as Na^+ ) and chlorine (as Cl-) of karst groundwater in the stagnant area. Thus, the research on the origin of Na^+ and Cl- and thermal source is of significance for the understanding of the karst groundwater system, reasonable exploitation and conservation of the water resource. Based on analyses of regional geographic and geomorphic, geologic and hydrogeologic conditions, the spatial distribution and origins of Na^+ , Cl and temperature of the karst groundwater are explored using methods of Kriging interpolation, chemical thermodynamics and stoichiometry. The results show that: (1) The temperature and concentrations of Na^+ and Cl- of the karst groundwater in the stagnant area increase in the flow direction with a significant gradient of 0.95℃/km. 140 m |
ISSN: | 1001-4810 |
DOI: | 10.11932/karst20150605 |