水压力分布作用下楔形体稳定性分析

Stability analysis of wedge in water pressure distribution

不同的裂隙岩体中水压力的分布形式不同,研究水压力分布规律对坡体稳定性分析极其重要.传统的裂隙水压力分布规律存在问题,本文就几种特殊情形提出了合理的水压力分布规律,利用Swedge软件,分析有无张拉裂缝情况下的楔形体岩质边坡在不同水压力分布形式下的坡体稳定性.计算结果表明:当楔形体结构面无水压力分布时,楔形体稳定性在有张拉裂缝情况下比无张拉裂缝情况下低.水压力分布形式对楔形体稳定性影响很大,不同结构面其水压力分布形式不同,如果按照统一水压力分布形式计算,将会产生很大的误差.

The distribution of water pressure in different fractured rock masses is different. It is important to study the water pressure distribution to the analysis of slope stability. Problems are existed in the distribution law of the traditional fissure water pressure distribution. A reasonable law of water pressure distribution is proposed for several special cases. The stability of wedge rock slope is analyzed by Swedge software in different water pressure distribution and with tension crack whether or not. The results show that the stability of wedge with tension crack is lower than without tension crack when the wedge discontinuity without water pressure distribution. The distribution of water pressure has a great influence on the stability of wedge. The distribution of water pressure in different discontinuity is different. If it is calculated in the form of uniform water pressure distribution,there will be a lot of error.