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- Title
Research on the Failure Mode of Dam Foundation under the Influence of Dense Gently Inclined Weak Interlayer.
- Authors
LUO Chang-wei; LIU Ran; CHEN Yuan; LIU Zi-an; CHEN Jian-ye; YANG Bao-quan; DONG Jian-hua; TAN Chun
- Abstract
Gently inclined weak interlayer is one of important factors affecting anti-sliding stability of dam foundation. The densely developed gently inclined weak interlayer makes the stability of dam foundation more complicated. It is of great significance to engineering safety and treatment of dam foundation under complex foundation conditions to study the instability mode of dam foundation under the influence of dense gently inclined weak interlayer. In this paper, two typical dam sections of Datengxia Sluice Dam are studied by using geomechanical model and numerical simulation method respectively. In this study, the adverse effects of dense gently inclined weak interlayer and faults are taken into full consideration, and the failure process and form of the dam foundation are obtained. The stability safety factor of the comprehensive method is determined to be KSC=3.30-4.18. It is revealed that the failure mode of the dam foundation of Datengxia Sluice Gate is the compression yield failure of shallow bedrock, and the gently inclined weak interlayer does not form a slip channel. No deep sliding failure occurs in the dam foundation. The results show that the dam heel area and the dam toe area are the weak parts of the project, which needs to be strengthened by engineering measures. The research results provide an important basis for the design of engineering reinforcement scheme and a reference for similar engineering dam foundation stability researches.
- Subjects
FAILURE mode &; effects analysis; DAMS; DAM failures; DAM safety; ENGINEERING design; SAFETY factor in engineering; WATER conservation projects
- Publication
China Rural Water & Hydropower, 2023, Issue 10, p240
- ISSN
1007-2284
- Publication type
Article
- DOI
10.12396/znsd.222565