| 贵阳市三桥地区岩溶地下水水化学特征及其演化规律 |
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| 引用本文： | 李华,文章,谢先军,罗朝辉,顾栩.贵阳市三桥地区岩溶地下水水化学特征及其演化规律[J].地球科学,2017,42(5):804-812. |
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| 作者姓名： | 李华 文章 谢先军 罗朝辉 顾栩 |
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| 作者单位： | 中国地质大学环境学院，湖北 武汉 430074 |
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| 基金项目： | 贵州省地勘基金项目[2014]23 |
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| 摘 要： | 贵阳市三桥地区岩溶地下水是贵阳市重要的生活及工农业用水水源，而贵州省岩溶系统发育异常复杂，对于岩溶水水化学及其演化特征尤其是水-岩相互作用方面的研究尚未见报道，为了保障该地区供水水质安全，以贵阳市三桥地区岩溶地下水为研究对象，通过系统的样品采集与氢氧同位素分析和水文地球化学模拟，针对岩溶地下水水化学组分的空间分布、演化特征及水-岩作用过程进行了系统的研究.研究表明:岩溶地下水水化学类型主要为HCO3·SO4-Ca·Mg型、HCO3·SO4-Ca型、HCO3-Ca型和HCO3-Ca·Mg型；研究区岩溶水主要来源于大气降水补给；研究区水化学特征主要受方解石、白云石、岩盐和石膏的溶解作用以及阳离子交替吸附作用控制.
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| 关 键 词： | 贵阳市三桥地区 岩溶地下水 水化学演化 水文地球化学模拟 水文地质 |
| 收稿时间： | 2016-12-20 |
Hydrochemical Characteristics and Evolution of Karst Groundwater in Sanqiao District of Guiyang City |
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| Abstract: | The karst groundwater in Sanqiao district of Guiyang City is the main water sources for local people, and the development of karst system in Guiyang is very complicated. However, the study of karst water chemistry and its evolutionary characteristics, especially water-rock interaction, has not been reported. In order to ensure the safety of water supply in the region, chemical components and hydrogen and oxygen isotopic data of the groundwater in the Sanqiao district of Guiyang are combined to determine the spatial distribution and evolution of chemical components in groundwater and distinguish the water-rock interaction processes in this study. It is found that the hydrochemical type of groundwater can be classified into HCO3·SO4-Ca·Mg, HCO3·SO4-Ca, HCO3-Ca and HCO3-Ca·Mg. The hydrogen and oxygen isotopes of groundwater show that the recharge of groundwater in research area is precipitation. Besides, hydrogeochemical simulation shows that the hydrochemical characteristics are controlled by the solution of calcite, dolomite, halite and gypsum as well as cation exchange. |
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