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本文提出了一种确定节理岩体连通率和岩体综合抗剪强度指标的新方法。该方法对传统的连通率的概念作了扩充,将连通率的确定归结为在岩体结构面网络图中寻找节理面和岩桥组合破坏路径的问题。在连通率的确定过程中,考虑了节理和岩桥的组合破坏机制。并应用动态规划原理,基本解决了岩体中存在多组节理面情况下的连通率确定问题,所得成果在漫湾电站左岸边坡稳定分析研究中获得了成功的应用。
This paper presents a new method to determine the joint ratio of jointed rock mass and comprehensive shear strength of rock mass. This method extends the concept of traditional connectivity rate, and the determination of connectivity rate is attributed to the problem of finding the joint surface and rock bridge combination failure path in the network map of rock mass structure plane. In the process of determining the connectivity rate, the combined destruction mechanism of joints and rock bridges was considered. Applying the principle of dynamic programming, the problem of determining the connectivity ratio under the condition of multiple joint planes in the rock mass is basically solved. The obtained results have been successfully applied in the stability analysis of the left bank slope of Manwan Hydropower Station.