针对岩体中主干裂隙和网络状裂隙提出了耦合渗流数值模型模拟分析岩体地下水三维渗流的方法。使用离散介质渗流模型描述岩体主干裂隙中的水运动，使用连续介质渗流模型描述网络状裂隙中水运动。连续介质充满整个研究域，离散介质按主干裂隙的实际空间分布嵌入连续介质中，并依据裂隙壁水力条件耦合两者。该方法逐个计算主干裂隙的渗流，充分体现主干裂隙的特殊水力作用；同时又避免了逐个计算网络状裂隙中的渗流所带来的困难，可以在较大尺度上分析渗流，便于工程应用。理论例子显示它能比较客观地反映裂隙岩体的渗流特性。该方法被应用到乌江构皮滩水利枢纽岩体渗流的分析中。 Aiming at the main fractures and network fractures in rock mass, a coupled numerical model of seepage flow is proposed to simulate the three-dimensional seepage of groundwater in rock mass. Discrete-medium seepage model is used to describe the water movement in the main fracture of the rock mass. The continuous medium seepage model is used to describe the water movement in the network-like fracture. The continuous medium fills the entire research area. The discrete medium is embedded in the continuous medium according to the actual spatial distribution of the main fractures and coupled with each other according to the hydraulic conditions of the fractured walls. The method calculates the percolation of the main cracks one by one and fully embodies the special hydraulic effects of the main cracks. At the same time, it avoids the difficulty of calculating the percolation in the network-like fractures one by one. The seepage can be analyzed on a large scale for engineering application. Theoretical examples show that it can objectively reflect the seepage characteristics of fractured rock mass. The method is applied to the rock mass seepage analysis of the Goupitan Hydroproject in Wujiang River.