锦屏二级水电站大理岩拉张型板裂化破坏研究

Research on Tensile Slabbing Failure of Marble At Jinping Ⅱ Hydropower Station

以锦屏二级水电站隧洞完整大理岩拉张型板裂化破坏的两种形式,即拉张型板裂化岩爆和拉张型板裂化片帮为研究对象,给出其发生发展全阶段的破坏机理,包括从断裂力学的角度解释拉张型破裂面的产生及拉张型板裂化岩爆和拉张型板裂化片帮各自发展至破坏的机制。为深入研究拉张型板裂化岩爆,还使用FLAC3D有限差分数值分析软件对岩板积聚能量过程进行模拟研究。

Taking the two types of tensile slabbing failure of intact marble at Jinping II Hydropower Station,i.e.tensile slabbing rockburst and tensile slabbing spalling,as research objects,the failure mechanism of all steps of this two failure types is given here,including the explanation for the occurrence of fracture plane from the perspective of fracture mechanics and explanation about how these two failure types failing.For the further study on tensile slabbing rockburst,the finite difference numeric analysis software FLAC3D is used to simulate and study the process of energy accumulation of rock plates.