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将裂隙岩体看作是由主干裂隙和网络状裂隙共同构成的,分别用随机离散裂隙网络模型和等效连续介质模型描述裂隙中的水流运动,利用裂隙壁与岩块之间的水位连续和流量均衡将两模型耦合起来,建立各向异性离散-连续耦合模型,并给出了求解方法.与其他耦合模型不同的是,各向异性离散-连续耦合模型采用了Monte-Carlo方法随机生成裂隙网络系统,具有随机性.通过算例比较了等效连续介质模型和离散-连续耦合模型对裂隙岩体渗流场影响模拟的差异.结果表明,裂隙间距和隙宽越大,2种模型模拟的差异越大.
The fractured rock mass is regarded as a combination of the main fracture and the network-like fracture. The stochastic discrete fracture network model and the equivalent continuum model are respectively used to describe the water flow in the fracture. By using the continuous water level between the fracture wall and the rock mass, Flow equilibrium model is coupled with two models to establish anisotropic discrete - continuous coupling model, and gives the solution method.Compared with other coupled models, anisotropic discrete - continuous coupling model using Monte-Carlo method to generate random cracks Network system with randomness.The differences between the simulations on seepage field of fractured rock mass with equivalent continuous medium model and discrete-continuous coupling model are compared by examples.Results show that the larger the crack spacing and the gap width, The greater the difference.