百色RCC重力坝右岸挡水坝段滑移模式及滑移路径的研究

Study of Sliding Mode and Sliding Paths of 9th Dam Block of Baise RCC Dam

首先采用非线性有限元法,对百色RCC重力坝右岸9B坝段进行破坏模式的研究,确定坝基可能滑移路径范围,而后采用非线性刚体弹簧元法,对可能的滑移路径进行危险滑块搜索,提出各种滑动组合的安全系数,从而确定了最危险滑移路径处于坝基面以下浅层,滑移通道为从上游坝踵拉裂区沿近直线方式向下游坝趾滑出,最小安全系数KS=3.95。

Firstly, nonlinear finite element method is adopted to study the failure mode of the 9B dam block on the right bank of Baise RCC dam and to detect the likely sliding area. Then rigid bodyspring element method is used to determine the safety factors of different sliding paths in the sliding area. The most likely sliding paths are finally detected to be shallowly located under the surface of the dam base and the smallest safety factor to be Ks=3.95.