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首先介绍可用于边坡开挖及加固分析的弹粘塑性块体元方法。该法把岩体视为具有弹粘塑性性质的结构面切割形成的刚性块体系统,考虑加固构件在结构面上变形的协调条件,建立求解块体系统和加固构件系统的变形和破坏过程。然后介绍该方法在小湾高拱坝坝肩和坝基开挖施工期稳定性研究中的应用情况。
Firstly, the method of elastic-viscoplastic block element that can be used for slope excavation and reinforcement analysis is introduced. In this method, the rock mass is regarded as a rigid block system formed by cutting of the structural surface with elastic-viscoplastic properties. The deformation and failure process of the system of bulk and reinforced components are established by considering the coordination conditions of the deformation of the reinforced structure on the structural surface. Then the application of this method to the stability research of Xiaowan high arch dam abutment and dam foundation excavation is introduced.