An experiment on dynamic rock fracture toughness test using edge-notched disc specimen is presented.

提出用边切槽圆盘试样测量岩石动态断裂韧度的实验方法。

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Based on substantial experimental data, the effects of loading rates on the strength, fracture toughness and fragmentation efficiency of rock materials are discussed in this paper.

本文以充分的实验结果为依据，讨论了加载率对岩石材料的强度、断裂韧度和破碎效果的影响。

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But the damage and fracture of rock is closely related to each other. And the relationship between strength criterion parameters of rock and fracture toughness of fracture theory is particular.

然而，岩石的破坏和断裂是紧密相联的，岩石强度准则的材料参数和断裂理论的断裂韧度存在特定的方程关系。

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