岩石的压拉比与强度准则之间关系的探讨

The relation between ratio of rock's compressive-tensile strength and strength criterion

岩石的抗压与抗拉强度之比 (压拉比 )远大于 1 ,这是岩石类材料与金属类材料的重要区别之一。讨论了微小裂纹发展成破坏面的过程 ,并从椭圆孔周边的应力状态着手 ,得出了岩石类材料的压拉比与内摩擦角之间关系的计算公式。

s:The ratios of rock's compressive tensile strength is much greater than one, which is one of the important differences between rock and metal. From the ambient stress states of ellipse pore, it has discussed the process of micro ellipse developing to excellent cracking and then to plane of fracture. The formulation has been obtained between ratio of rock's compressive tensile strength and angle of internal friction.