| 康定北部高原构造岩溶发育特征与地下水径流带识别 |
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| 引用本文： | 马剑飞,付昌昌,张春潮,白占学.康定北部高原构造岩溶发育特征与地下水径流带识别[J].地质科技通报,2022,41(1):288-299. |
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| 作者姓名： | 马剑飞 付昌昌 张春潮 白占学 |
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| 作者单位： | 中国地质科学院水文地质环境地质研究所;中国地质科学院第四纪年代学与水文环境演变重点实验室 |
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| 基金项目： | 中国地质调查局项目20190505中国地质调查局项目DD20201123中国地质调查局项目DD20211374 |
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| 摘 要： | 受自然环境和技术方法制约,青藏高原岩溶发育演化和岩溶地下水循环特征研究相对薄弱,制约了青藏高原碳酸盐岩区的经济发展、民生设施建设和地质灾害防治。通过野外地质测量,岩溶地下水、地表水和大气降水水化学和同位素特征分析,泉水流量动态,水均衡计算和物探等技术方法,系统分析了四川省康定市北郊碳酸盐岩分布区的岩溶发育特征,识别了岩溶径流通道和岩溶大泉主要补给来源。结果表明:康定市北郊碳酸盐岩分布于高山峡谷地貌类型区,可溶岩地层分布、岩溶发育程度和岩溶水补给、径流、排泄均受构造控制,可溶岩与非可溶岩接触带和活动断裂附近的岩溶发育程度较强。岩溶水呈管道流径流,主要以岩溶大泉形式集中排泄,泉流量约1.5×104 m3/d且动态较为稳定。通过水文地质条件分析,识别出研究区存在通化组岩溶水径流带和雅拉河断裂岩溶水径流带。水化学-同位素数据、岩溶泉流量动态和水均衡计算结果显示,雅拉河河水是岩溶大泉的主要补给源,岩溶地下水主要沿雅拉河断裂岩溶水径流带径流并集中排泄。
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| 关 键 词： | 高原构造岩溶 鲜水河断裂 岩溶水径流带 青藏高原 康定市 |
| 收稿时间： | 2021-11-19 |
Plateau tectonic karst development characteristics and underground conduits identification in the northern part of Kangding |
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| Ma Jianfei,Fu Changchang,Zhang Chunchao,Bai Zhanxue.Plateau tectonic karst development characteristics and underground conduits identification in the northern part of Kangding[J].Bulletin of Geological Science and Technology,2022,41(1):288-299. |
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| Authors: | Ma Jianfei Fu Changchang Zhang Chunchao Bai Zhanxue |
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| Affiliation: | (Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang 050061,China;Key Laboratory of Quaternary Chronology and Hydro-Environmental Evolution,Chinese Academy of Geological Sciences,Shijiazhuang 050061,China) |
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| Abstract: | Restricted by the natural environment and technical methods, the study on the evolution characteristics of karst development and the karst groundwater cycle process in the Qinghai-Xizang Plateau is relatively weak, which restricts the economic development, construction of livelihood facilities and the prevention and control of geological disasters.This paper systematically analyzes the karst development characteristics of the carbonate rock distribution area in the northern part of Kangding in Sichuan Province through the methods of geological survey, chemistry-isotope characteristics analysis of karst groundwater, surface water and precipitation water, spring water flow dynamics and water balance calculations.And the karst runoff zone was identified.The results show that the carbonate rocks in the northern part of Kangding are distributed in the alpine valley area.The distribution of karst strata, the degree of karst development, karst water supply and runoff are mainly controlled by structures.The degree of karst development on the contact zone of soluble and non-soluble rocks and the vicinity of active faults is relatively strong.The karst water flows as pipeline runoff, which is mainly discharged in the form of karst springs.The spring flow is about 1.5×104 m3/d and the flow dynamics are relatively stable.Through the analysis of hydrogeological conditions, the karst water runoff zone of the Tonghua Formation and the karst water runoff zone of the Yala River fault have been identified.Hydrochemistry-isotopic data, karst spring flow dynamics and water balance calculation results show that Yala River water is the main source of replenishment for large karst springs.Karst groundwater mainly flows downstream along the karst water runoff zone of the Yala River fault and is discharged in a concentrated manner. |
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| Keywords: | plateau tectonic karst Xianshuihe fault karst water runoff zone Qinghai-Xizang Plateau Kangding City |
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