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在干旱、半干旱的隐伏岩溶区进行地下水资源评价中，地下水的形成及补给是最基础，也是最棘手的工作。本文应用环境同位素技术对研究区隐伏岩溶水的来源、补给做了研究。结果表明，区内不同时代的岩溶水均由大气降水组成。隐伏岩溶水的补给局限在大岔河流域内，并有大量现代降水的混入，混入量平均为54％，说明该区隐伏岩溶水汇水条件良好，具有可观的开发利用价值。
Groundwater formation and recharge are the most basic and most difficult task in the assessment of groundwater resources in arid and semi-arid subterranean karst regions. In this paper, the source and supply of hidden karst water in the study area are studied using environmental isotope techniques. The results show that the karst water in different periods in the area consists of precipitation. The supply of hidden karst water is confined in the Dachahe River Basin with a large amount of modern precipitation mixed with an average of 54%. This shows that the conditions of hidden karst water catchment in this area are good and have considerable development and utilization value.