Stability Analysis of Atomized Slope beside Spillway at Hydropower Station of
详细信息
- 责任者：Ju Nengpan (State Key Laboratory of Geo-Hazard Prevention and GeoEnvironment Protection ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zhao Jianjun
- 刊名：Journal of Engineering Geology
- 出版年：2010
- 卷期：18(3)
- 关键词：边坡稳定性 ; slope stability
- 页码：p.425-430
- 图表：illus., 3 tables, 12 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
This paper is based on the structural features of slope slippage belt, cracks and control joints structure developing in atomized slope in the chute segment of the spillway in one south-west hydropower station. It analyzes the boundary conditions and deformation and failure modes of potential instability in the condition of flood discharge atomization after the excavation and supporting of the slope. It examines the geological environment conditions of the slope. It uses the mechanism of the flood discharge atomization role on the rock slope. It finds that the major impact of rain and fog to slope is infiltration of rain and fog along the tension crack surfaces of the slope. The infiltration influences the mechanical properties of the structural plane, thus affects the stability of the slope. The analysis of the deformation characteristics is carried out on structural plane of the different softening coefficient in the slope. The trend of the slope deformation and failure after the infiltration of flood discharge atomizing rain and fog is further analyzed using numerical simulation. The results show that different softening coefficients can result in a larger difference among the downstream side slope rock mass of the spillway 0+555.00.