层状岩石损伤本构关系的研究

The Study on Damage Constitutive Relation ofThree-Dimensional Stratified Composite Rock

对常见层状复合岩石的损伤结构与本构关系进行了研究,电镜微观研究表明了其微观结构与微孔隙特征,导出各分层在不等围压、不同有效应力、不同参数及不同损伤演化过程下的三维非线性损伤本构方程与演化方程,并得到实验的较好验证。

The damage structure and constitutive relation of common bedded composite rock are researched. Rock micrcosmic study by SEM shows the characteristic of their microstructure and micropore. The damage constitutive equations and damage evolutions equation in three dimensional nonlinear are derived under unequal biaxial stress, different effective stress, different mechanical parameter and damage evolution processes for every stratification. They have been well testified by experiments.