| 基于多源人工示踪试验表征岩溶管道结构特征: 以贵州苍蒲凹地下河为例 |
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| 引用本文： | 耿新新,张凤娥,陈宗宇,聂振龙,朱谱成.基于多源人工示踪试验表征岩溶管道结构特征: 以贵州苍蒲凹地下河为例[J].地质科技通报,2022,41(5):324-332. |
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| 作者姓名： | 耿新新 张凤娥 陈宗宇 聂振龙 朱谱成 |
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| 作者单位： | 1.中国地质科学院水文地质环境地质研究所, 石家庄 050061 |
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| 摘 要： | 人工示踪试验是岩溶水文地质领域的重要研究手段, 分别在基流期和降水条件下对苍蒲凹地下河实施了多源示踪试验, 以探究其岩溶管道的展布特征。试验结果显示, 基流期和降水条件下均检测到来自水箐、黄连村及廖家坡3个落水洞的示踪剂, 降水条件下的示踪剂回收率分别为88.12%, 90.01%, 84.01%, 表明苍蒲凹地下河为多源单汇型地下河。基流期及降水条件下示踪剂运移特征均表明, 水箐至苍蒲凹的流动路径曲率最大, 黄连村至苍蒲凹的流动路径为主岩溶管道, 廖家坡至苍蒲凹的流动路径上存在双通道, 且在靠近地下河出口处存在溶潭, 据此建立了苍蒲凹地下河管道结构的概念模型。研究成果可为复杂岩溶地下河的水资源调查及开发利用提供依据。
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| 关 键 词： | 岩溶区 多源示踪试验 管道结构 苍蒲凹地下河 溶质运移 |
| 收稿时间： | 2022-07-11 |
Characterization of karst conduit structure based on multisource artificial tracer test: A case study of the Cangpuwa underground river in Guizhou Province |
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| Affiliation: | 1.Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China2.China University of Geosciences(Beijing), Beijing 100083, China3.Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China4.Command Center of Natural Resources Comprehensive Survey, China Geological Survey, Beijing 100055, China |
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| Abstract: | Artificial tracer test is an important research method in the field of karst hydrogeology. In this study, to understand the distribution characteristics of karst conduits more comprehensively, multisource tracer tests were carried out on the Cangpuwa underground river in the base flow period and precipitation conditions. The results showed that tracers from Shuiqing, Huangliancun, and Liaojiapo were detected in the base flow period and precipitation conditions. The tracer recoveries under precipitation conditions were 88.12%, 90.01%, and 84.01%, respectively, indicating that the Cangpuwa underground river was a multisource and single-sink underground river. According to the tracer transport characteristics in both the base flow period and precipitation conditions, a conceptual model of the Cangpuwa underground river karst conduit structure was constructed. The flow path from Shuiqing to Cangpuwa had the largest curvature, the flow path from Huanglian to Cangpuwa was mainly a karst conduit, there were two channels on the flow path from Liaojiapo to Cangpuwa, and there was a dissolved pool near the outlet of the underground river. The research results can provide a basis for the investigation and exploitation of water resources in complex karst underground rivers. |
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