【摘要】 为揭示岩溶基质—管道系统中水流交换的动态过程，构建了相应的耦合物理模型，并开展了不同补给方式与管壁渗透性条件下的室内模拟试验。结果表明，基质—管道系统的水流交换受水头差驱动，其交换方向随补给方式的不同而呈现显著差异；同时，水流交换量随补给强度的增加而显著增大，且与水头差之间呈现明显的线性正相关。此外，较高的管壁渗透性会显著提升水流交换强度并延长其持续时间。研究为阐明岩溶含水系统的水力连通机制提供了理论依据与实验支撑。更多还原

【Abstract】 To investigate the dynamic processes of water exchange between karst matrix and conduit systems, a coupled physical model of such systems was constructed. Laboratory simulations were conducted under different recharge modes and conduit wall permeability conditions. Results indicate that water exchange is driven by the head difference between the matrix and conduit, with significant directional variation under different recharge modes. Additionally, the exchange flow rate increases markedly with recharge intensity, exhibiting a clear linear positive correlation with head difference. Furthermore, higher conduit wall permeability notably enhances the exchange intensity and prolongs its duration.. These findings provide theoretical and experimental insights into the hydraulic connectivity mechanisms of karst aquifer systems.更多还原