岩溶管道是岩溶水的主要运移通道，研究溶质在岩溶管道中的运移过程对岩溶地区地下水污染预测与防治、水资源管理具有重要意义。岩溶管道中暂时存储区（溶潭、管道障碍物、粗糙管壁，简称暂存区）是造成溶质运移滞后的主要因素之一，研究岩溶管道溶质运移过程与暂存区的关系对岩溶管道溶质运移过程的正确认识和预测至关重要。本项目拟通过室内示踪实验详细研究岩溶管道中暂存区和流速对溶质运移过程的影响，分析实验穿透曲线特征参数的变化规律，在此基础上将常用的两区模型和暂时存储模型用于实验数据模拟，分析模型参数与暂存区结构（类型、形状、组合）和流速的关系，明晰模型参数的物理意义，最后基于野外岩溶管道开展不同流速下的示踪试验，对比分析室内实验和野外试验结果的异同，探索两者差异的主要原因，探求室内实验结果在野外实际场地的适用性。本项目研究成果将完善复杂结构岩溶管道中溶质运移过程的研究，推动岩溶地区溶质运移理论的发展和应用。

For karst aquifers, the water and solute mainly transport in karst conduits. The research of solute transport process in karst conduits is of great significance to prediction and prevention of groundwater pollution and water resources management in karst region. Transient storage zone in karst conduits (pools, conduit blockages, conduit wall roughness) is one of the main factors causing solute retention. It is of great significance to establish the relationships between solute transport process and transient storage zone for correctly understanding and predicting solute transport process in karst conduits. In this project, the tracer experiments are conducted in the laboratory to study the effect of transient storage zone and flow rate on solute transport process in karst conduits. Firstly, the variations of characteristic parameters of the breakthrough curves (BTCs) are analyzed. Then, two-region nonequilibrium model and transient storage model are used to simulate the BTCs and then establish the relationships between model parameters and storage zone structures and flow rates. Based on this, the physical meanings of the model parameters are analyzed and clarified. Finally, the tracer tests are performed under different flow rates in field karst conduits. The similarities and differences between the results of laboratory experiments and field tracer tests are compared and analyzed, also the main reasons for the differences are analyzed so as to exploring and seeking the applicability of experimental results in the field. This research could improve the study of solute transport process in complex karst conduits and promote the development of solute transport theory in karst region.