摘要
危岩是一种全球性高频率的地质灾害,其中滑塌式危岩破坏是危岩主要的破坏类型之一。该文针对滑塌式岩石破坏类型,通过考虑自重、裂隙水压力和地震力3种组合荷载构建滑塌式危岩力学模型,采用断裂力学的方法推导其Ⅰ-Ⅱ型复合应力强度因子。根据最大周向应力理论,使用三角形万能公式计算变形得出其理论断裂角。
Unstable rock is a kind of global geological disaster with high frequency. This paper,considering three kinds of combined loads which are gravity, fracture water pressure and seismic force, constructs a unstable rock mechanics model and it uses a fracture mechanics method to deduce the composite stress intensity factor of the type I-II. Based on the maximum circumferential stress theory,this article calculates the theoretical fracture angle by triangle universal formula.
作者
陈斯祺
Chen Siqi(College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang Hubei, 443002, China)
出处
《科技创新导报》
2017年第3期9-13,共5页
Science and Technology Innovation Herald
