河南城建学院学报Issue(3)：18-23,6.
天仙湖库中堆石坝坝坡稳定性有限元强度折减法分析
FEM shear strength reduction technique analysis of dam slope stability rock-fill dam in reservoir
温雨眠 1王涛2
作者信息
- 1. 重庆交通大学国家内河航道整治工程技术研究中心，重庆400074
- 2. 重庆交通大学水利水运工程教育部重点实验室，重庆400074
- 折叠
摘要
Abstract
The rock-fill Dam of Tianxian Lake located in the Three Gorges reservoir is a typical “reservoir dam”. Along with the Three Gorges Reservoir water level changes between 173 . 0 m in dry season to 143 . 3 m in flood season, the downstream water may flows back to upstream caused by downstream water level being higher than the upstream water level. Based on the strength reduction finite element method, this paper ana-lyzed the slope stability of the Tianxian Lake rock-fill dam under four different combinations of the water lev-els, using Mohr-Coulomb constitutive model. The results show that high water level will help the slope on the same side remain stable;the larger the difference between upstream and downstream water levels, the smaller the stability factor is, which means the dam slope's stability decreased. The stability of the dam satisfied the demand of the design code in some cases, while under dangerous combination of water levels, there was poten-tial landslide liability. To eliminate hidden trouble, the dam is proposed to reinforce.关键词
库中坝/坝坡稳定性/有限元强度折减法/水位组合/塑性流动Key words
dam in reservoir/stability of the dam slope/FEM strength reduction method/combinations of water levels/plastic flow分类
建筑与水利引用本文复制引用
温雨眠,王涛..天仙湖库中堆石坝坝坡稳定性有限元强度折减法分析[J].河南城建学院学报,2014,(3):18-23,6.
