Three dimension deformation analysis of Jatigede Dam

In large dams, the reservoir water level will become a large hydrostatic pressure and reduce the effective stress due to the effect of seepage on the dam body. The total stress that occurs can cause deformation in the dam body to exceed the allowable deformation. Therefore, it is necessary to evalua...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-01, Vol.419 (1), p.12138
Main Authors: Minmahddun, A, Ngii, E
Format: Article
Language:English
Subjects:
Dam stability
Dams
Deformation
Deformation analysis
Finite element method
Freeboard
Hydrostatic pressure
Reservoirs
Seepage
Stability analysis
Water levels
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Summary:In large dams, the reservoir water level will become a large hydrostatic pressure and reduce the effective stress due to the effect of seepage on the dam body. The total stress that occurs can cause deformation in the dam body to exceed the allowable deformation. Therefore, it is necessary to evaluate the deformation of the dam to know the stability of the dam. This research aimed to analyze the deformation of the dam in a steady-state seepage condition. The reservoir water level was modeled on minimum, normal, and flooded water levels. The deformation was analyzed using the three-dimension finite element method. Deformation analysis results show that the deformation increased when the reservoir water level increased. Significant deformation increase occurred in x-direction deformation i.e. 0.27 m at minimum water level, 0.55 m at normal water level and 0.55 m at flooded water level. The deformation obtained from the analysis still required the maximum deformation criteria of 2 m, which is half of the freeboard.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/419/1/012138