岩溶多重介质泉水流量衰减过程的室内模拟及分析

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。

Laboratory Simulation and Analyses of Spring Attenuation Process of Karst Multi-media

In the southern areas of China,there are a large number of carbonate rock with different karst landforms.The dynamic properties of groundwater flow are very complex in karst aquifers because of its complex hydrogeological conditions.The karst multi-media structure is high heterogeneity,and the outflow process is simulated by using laboratory experiment,especially the discharge attenuation process is deeply analyzed.During the rain event,there are three processes, namely rise,stabilization and attenuation,and all the three processes are in response to the precipitation events.The attenuation process can be divided into two or three regime sub-processes,and each regime sub-process has different attenuation speed because of different types void of the water-bearing media.