【摘要】 从大量岩石断口的光学显微镜和电镜观察结果表明,岩石的微观断裂,主要是表现为沿晶断裂、穿晶断裂、微孔聚合断裂,有时是以相互偶合的形式,体现其拉破坏的特征.本文从损伤力学概念出发分析岩石的破坏,认为主要是由局部损伤拉破坏造成的,并由此解释了一些宏观现象.更多还原

【Abstract】 The results of fractography of rock show that the microscopical fractures of rock are cha-racterized mainly by intergranular brittle fracture, transgranular brittle fracture,coales-cence fracture of microvoids and their combination. They form of manifest themselves ina ten-sile fracture. Combining these experimental phenomena with the analysis of damage mechanics,it is clear that the failure of rock is caused mainly by local tensile stresses of damagedrock. On the basis some macro-phenomena are explained.更多还原