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岩石的平面断裂韧度K_(IC)是断裂分析的重要参数,是衡量岩石抵抗断裂破坏能力的指标,它与岩石材料的物理性状有关。 本文简述了经不同条件处理后的岩石试样,在一般实验室条件下测定其断裂韧度的方法及成果。探讨了部分岩石材料的断裂韧度的物理性状效应,即岩石断裂韧度随烘干温度的变化、随湿度的变化和随岩石材料本身的弹性及强度的变化规律。这些规律对工程实践和研究岩石材料的断裂破坏的本质是有价值的。
The plane fracture toughness K_(IC) of rock is an important parameter of fracture analysis and it is an index to measure the resistance to rock fracture resistance. It is related to the physical properties of rock materials. This article briefly describes the method and results of determining the fracture toughness of rock samples treated under different conditions under general laboratory conditions. The physical property effects of fracture toughness of some rock materials are discussed, namely the change of fracture toughness of rock with drying temperature, the change with humidity, and the variation law of elasticity and strength of rock material itself. These laws are valuable for engineering practice and the study of the nature of the fracture destruction of rock materials.