考虑节理影响的岩质边坡稳定性分析

为考虑节理对岩质边坡稳定性的影响,采用有限元极限分析软件OPTUM G2建立了岩质边坡数值模型,分析了节理长度、节理距离坡趾的水平距离以及节理倾角对边坡稳定性的影响规律.研究结果表明,随着节理长度的增加,边坡的下、上限安全系数逐渐减小;随着节理距离坡趾水平距离的增加,边坡的下、上限安全系数逐渐增加;岩质边坡的下、上限安全系数随着节理角度的增加先减小后增大,减小及增大的幅度与坡角大小有关.研究结果可为岩质边坡的设计提供一定参考依据.

In order to study the influence of joint on rock slope stability, the finite element limit analysis software OPTUM G2 is used to establish the numerical model. And then the influence of the length of the joint, horizontal distance of joint from toe of slope, and joint angle on the rock slope stability is analyzed. The results show that the lower and upper limit safety factors of rock slopes gradually decrease with the increase of the length of joint, and they increase gradually with the increase of the horizontal distance of joint from the toe of slope. The lower and upper limit safety factors of rock slope decrease first and then increase with the increase of joint angle, and the magnitude of decrease and increase is related to the size of rock slope angle. The research results can provide some reference for the design of rock slopes.