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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Application of Geophysical and Hydrogeochemical Methods to the Protection of Drinking Groundwater in Karst Regions
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Application of Geophysical and Hydrogeochemical Methods to the Protection of Drinking Groundwater in Karst Regions

机译：物探与水文地球化学方法在喀斯特地区饮用水的保护中的应用。

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To provide theoretical support for the protection of centralized drinking groundwater sources in karst areas, it is necessary to accurately identify the development of karst conduits and analyze the differences in hydrogeochemical characteristics of different karst systems. This provides a scientific basis for the accurate designation of risk zones that may cause drinking groundwater pollution. In this study, a geophysical survey, hydrogeological chemical process analysis and optimized fuzzy cluster analysis were used to gradually improve the understanding of karst water systems. AMT and HDR methods were used to calibrate the resistivity around the water-filling karst conduits, which ranged from 39 to 100 Ω·m. A total of seven karst systems were identified, including four karst systems in the north of the study area, one karst system in the west and two karst systems in the south. Analysis of the hydrochemical data showed that HCO -Ca and HCO -Mg-Ca types accounted for 90% of all samples. The δD and δ O values of their main conduits were −51.70‰ to −38.30‰ and −7.99‰ to −5.96‰, respectively. The optimized fuzzy clustering analysis method based on the weight of variables assigned by AHP more accurately verified karst water systems. Based on these findings, the drinking groundwater source risk zone was designated with an area of 33.90 km , accounting for 34.5% of the study area. This study effectively improved the rationality and accuracy of the designation of drinking groundwater source risk zones in karst areas, and provided a scientific basis for the identification of karst water systems and decision-making of drinking groundwater source protection in karst areas.
机译：为了为保护岩溶地区集中式饮用水源提供理论支持，有必要准确地识别岩溶导管的发育并分析不同岩溶系统水文地球化学特征的差异。这为准确确定可能引起饮用水地下水污染的危险区域提供了科学依据。在这项研究中，通过地球物理调查，水文地质化学过程分析和优化的模糊聚类分析来逐步提高对喀斯特水系的认识。 AMT和HDR方法用于校准充水岩溶导管周围的电阻率，其范围从39到100Ω·m。总共确定了七个岩溶系统，包括研究区域北部的四个岩溶系统，西部的一个岩溶系统和南部的两个岩溶系统。对水化学数据的分析表明，HCO -Ca和HCO -Mg-Ca类型占所有样品的90％。它们的主导管的δD和δO值分别为-51.70‰至-38.30‰和-7.99‰至-5.96‰。基于层次分析法分配的变量权重的优化模糊聚类分析方法可以更准确地验证岩溶水系统。根据这些发现，将饮用水地下水源危险区划为33.90 km，占研究面积的34.5％。该研究有效地提高了岩溶地区饮用水源地危险性区划的合理性和准确性，为岩溶水系统识别和岩溶地区饮用水源地保护的决策提供了科学依据。

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