刚性元方法和块状岩体稳定性分析

本文提出的刚性元方法是一种数值分析方法,它将变形体离散为一些刚性块体(剐性元)和块体之间的可变形薄层(节理元)的组合体,在各种载荷条件下求出块体的运动以及薄层的变形和应力分布。本文联合岩石系统的失稳准则来使用刚性元方法,成功地研究了块状岩体的稳定性问题。计算实例表明,本文提出的方法可以正确地反映块状岩体的失稳机制,是一种合理和可行的岩体稳定性分析手段。

RIGID-BODY JOINT-ELEMENT METHOD AND STABLITY ANALYSIS OF JOINTED ROCK MASSES

The rigid-body joint-element method provided in this paper is a numerical analysis method that idealizes the deformation body as an assemblage of some rigid blocks and deformable thin layers (joint-elements) between the blocks and can be used to solve the movement of the blocks and the deformation and the stress distribution in the layers under various loading conditions. This, method together with a criterion for determining the stability of a rock system can be used successfully to study the stability problem of jointed rock masses. From an example of engineering application, it is shown that the method presented in this paper may reflect correctly the mechanism of in stability of the jointed rock masses and is a reasonable and feasible means for their stability analysis.