Failure analysis of arch dam under fault action based on inter-generational coordination

Wang, Haijiang; Liu, Yaolai; Yan, Long; Lyu, Changhao; Xu, Xiaoyi; Xu, Weiya

doi:10.1016/j.engfailanal.2024.108721

Engineering Failure Analysis

2024

DOI: 10.1016/j.engfailanal.2024.108721

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Failure analysis of arch dam under fault action based on inter-generational coordination

Haijiang Wang,

Yaolai Liu,

Long Yan

et al.

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Study on Valley Shrink Deformation of the High Arch Dam with Large Faults near Dam Area during Initial Impoundment

Liu,

Wang,

Yan

et al. 2024

Water

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Valley shrink deformation is a common physical and mechanical phenomenon during the reservoir operation of high arch dams. This phenomenon is particularly significant in the initial stages of impoundment and can severely impact the operational safety of the arch dam. This study focuses on the arch dam under construction in the upstream of the Lancang River. By considering the secondary structural planes F115 and F111 at the dam site, a numerical model of valley shrink deformation was established. The study investigates the characteristics of valley shrink deformation during the initial impoundment phase of the arch dam. The results show that during the impoundment process, the valley slopes on both sides of the reservoir shrink towards the center of the valley. The deformation on the right bank is greater than that on the left bank due to the influence of the F115 fault. When the elevation is lower than the exposure position of F115, the deformation on the right bank increases with elevation; when it is higher than this position, the deformation decreases. On the left bank, due to the influence of F111 and the seepage field, the deformation value increases first and then decreases with the increase in elevation. After the water level stabilizes, the deformation rate decreases and approaches zero. This research results provide a reference for addressing valley shrink deformation issues during the initial impoundment of the arch dam.

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Study on Valley Shrink Deformation of the High Arch Dam with Large Faults near Dam Area during Initial Impoundment

Liu,

Wang,

Yan

et al. 2024

Water

View full text Add to dashboard Cite

show abstract

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Failure analysis of arch dam under fault action based on inter-generational coordination

Cited by 1 publication

References 44 publications

Study on Valley Shrink Deformation of the High Arch Dam with Large Faults near Dam Area during Initial Impoundment

Study on Valley Shrink Deformation of the High Arch Dam with Large Faults near Dam Area during Initial Impoundment

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