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通过野外实地考察及室内综合分析研究陕西柞水岩溶洞的分布特征、沉积类型、形成条件和形成过程及形成的地质时代估算。初步认为：以岩溶洞为主的各类岩溶地貌的发育主要是地下（表）水流长期溶（侵）蚀了距今约６００～４００Ｍａ前形成的寒武系—奥陶系碳酸盐岩石的结果；断裂地质构造和新构造运动抬升为溶蚀作用创造了极好的空间条件及溶洞的变位；佛爷洞、天洞及风洞主体形成始于距今约２．４６Ｍａ前的第三纪末期（Ｎ２）或第四纪早期（Ｑ１）。
Through the field investigation and indoor comprehensive analysis, the distribution characteristics, sedimentary types, formation conditions and formation process of the Zhashui karst cave in Shaanxi Province and the formation of geological age are studied. It is preliminarily believed that the development of various types of karst landforms dominated by karst caves is that the Cambrian-Ordovician carbonate rock formed before long-term dissolution (erosion) of the underground (surface) water flow about 600 ~ 400Ma ago As a result, the fracture geology and the uplifting of Neotectonic movement created excellent space conditions and karst cave displacements for dissolution; the formation of the main body of the Foye Cave, the Tiangong Cave and the wind tunnel began at the end of the Tertiary before about 2.46Ma (N2) or early Quaternary (Q1).