岩体裂隙介质各向异性耦合模型研究

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,建立各向异性离散一连续耦合模型,并给出了求解方法.与其他耦合模型不同的是,各向异性离散一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一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.

Anisotropic coupled model for fractured rock medium

A fractured rock mass was considered to include two compositions of arterial and ramificate fractures.The flow movement in the fractures could be described using the stochastic discrete fractured network model and the equivalent continuum medium model,respectively.The two models were coupled with the continuum groundwater table and the discharge equilibrium between the fractured walls and the block mass.The solution of the discrete and continuum coupled model is given.As opposed to other coupled models,the ...