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我国南方地区碳酸盐岩丰富,发育着各种类型的岩溶地貌。岩溶地区水文地质条件十分复杂,很难清楚地认识地下水流的运动规律。本文借助室内实验装置,模拟了结构不均匀的岩溶多重介质的出流过程,并着重对流量衰减过程进行了分析。岩溶介质对降雨的响应可以分为3个阶段:流量增大过程、流量稳定过程和流量衰减过程。其中,衰减过程具有多个亚动态,每个亚动态的衰减速度不同,这是由岩溶介质内部结构的差异所引起的。
Carbonate rocks in southern China are rich in development of various types of karst landforms. The hydrogeological conditions in the karst area are very complicated and it is difficult to clearly understand the movement law of the groundwater flow. In this paper, the outflow process of karst multi-media with non-uniform structure is simulated with indoor experimental device, and the flow decay process is emphatically analyzed. The response of karst media to rainfall can be divided into three stages: increasing flow, steady flow and flow attenuation. Among them, the decay process has multiple sub-dynamics, each sub-dynamics decay rate is different, which is caused by the difference in the internal structure of karst medium.