【摘要】 大量沉积岩样的电镜与岩相微观研究表明 ,岩石是由含不同形态的晶体和孔隙构成 ,由此建立岩石微结构损伤模型。进而导出了各自损伤演化过程、力学参数、有效应力、不等围压等因素的多层复合岩石三维非线性损伤本构方程及损伤演化方程。实验结果表明 ,二者吻合良好更多还原

【Abstract】 The microcosmical study on many speciments of sedimentary rock by SEM and petrography theory show that rock is formed of microcrystalline and micropore with all kinds of forms.Therefrom the microstructure model of rock is established.Further the three dimensional nonlinear damage constitutive equation and damage evolution equation of layered rock including respective process of damage evolution,mechanical parameter,effective stresses,and unequal biaxial stress in different rocks are derived.The results of the experiment indicate that the theoretical curve is fairly close to the experimental curve.更多还原