View the rock masses as equivalent continuum media characterized as anisotropic material , equivalent elastic matrix of equivalent continuum media mod el is formed based on strain adding theory , and then principal model is arrived , two dimension finite element equations are formed according to the galerkin finite element method which takes both displacement and fluid pressure as un - known variables 把巖體視為具有各向異性本構(gòu)關(guān)系的假想等效連續(xù)體,考慮了裂隙剪切變形非線形特性,根據(jù)應(yīng)變疊加原理,推導(dǎo)出了等效彈性矩陣,從而得到裂隙巖體等效連續(xù)介質(zhì)模型的本構(gòu)模型。