岩溶管道与裂隙介质间溶质交换研究进展
摘要
The solute exchange between karst conduit and matrix is a common phenomenon during solute transport in karst groundwater, which has a key control effect on pollutant transport in karst water system.The solute exchange between conduit and matrix becomes very complicated under the concentrated recharge condition, which is a challenge to characterize the physical process and simulation.Based on literature in related fields, in this paper it summarizes the observation, test methods, mechanism, control factors, as well as current simulation methods of solute exchange between karst conduit and matrix, and points out the existing problems in the researches.The solute exchange control experiments under the conditions of unsteady flow should be conducted by indoor conduit-matrix physical models for further researches, which will help analyze its influencing control factors and reveal the physical mechanism of solute exchange between the conduit and matrix.The mathematical model of solute transport coupled solute exchange process should be established by describing solute exchange boundary conditions, which needs to be verified by field tracer tests.