基于颗粒流法的含软弱结构面岩质边坡稳定性分析

软弱结构面的分布情况对岩质边坡失稳破坏的形式有较大影响,主要是因为软弱结构面的存在一定程度上影响了岩质边坡抗剪强度薄弱面的分布。采用颗粒流法对岩质边坡的失稳破坏过程进行模拟,并预加不同分布形式的软弱结构面,研究了软弱结构面的分布深度及倾角对边坡破坏形式的影响。研究结果显示,浅层软弱结构面对边坡稳定性威胁最大,随着分布深度的增加,其影响也越来越小;随着预加软弱结构面与坡体中部初始滑裂面夹角的增大,岩质边坡失稳破坏的程度也在增大,由局部的破坏转变成崩塌破坏。

Stability analysis of rock slope with weak structural surface based on particle flow method

: The distribution of weak structural surface has a great influence on the form of rock slope failure, mainly because the existence of weak structure plane affects the distribution of weak shear strength of rock slope to a certain extent. The failure process of rock slope is simulated by particle flow method, and the weak structure plane with different distribution forms is preliminarily added. The influence of the depth of distribution and inclination angle on the failure mode of the slope is studied. The results show that the shallow weak structure has the greatest threat to slope stability, and its influence is getting smaller and smaller with the increase of the distribution depth. With the addition of the weak structure plane and the initial slip surface Increase, rock slope instability damage is also increasing, from the local damage into collapse and destruction.