Results 21 to 30 of about 549 (185)
Deformation of rockfill in bodies of rockfill dams
Introduction. The main factor determining the stress-strain state (SSS) of rockfill dam with reinforced concrete faces is deformability of the dam body material, mostly rockfill. However, the deformation properties of rockfill have not been sufficiently studied yet for the time being due to technical complexity of the matter, Materials and methods. To
openaire +2 more sources
ABSTRACT The reliability of flood event simulations is a crucial aspect in terms of saving lives. The worst flood scenarios derive from possible dam failures. For earthen dams, the breaching mechanism, triggered by overtopping or piping, is affected by several modelling uncertainties, which propagate downstream and may influence flood hazard mapping ...
Andrea Antonella Graziano +2 more
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The unclear impact of temperature on rockfill dam settlement and the lack of a solid basis for selecting temperature parameters in prediction models are problematic. These issues significantly limit the accuracy and applicability of deformation monitoring models for rockfill dams.
Chunhui Ma +6 more
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Field compaction tests on rockfill dams based on surface settlement method
Changheba Dam has been a world-class high rockfill dam in China with the second highest height and the first largest filling volume in the world. The dam body is the dam shell filled by the local rock, and its compaction quality directly affects the dam ...
LI Shu-yong 1, LI Hai-bo 3, HAN Xing 2, HOU Qi-dong 1, YANG Xing-guo 1
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Abstract Addressing the limitations of traditional overtopping risk analysis methods, which either consider only a single failure mode or fail to accurately characterize the nonlinear characteristics of reservoir levels, this paper proposes a novel overtopping risk model for dams.
Liang Pei +5 more
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Supervised parameter updating of deformation analyses for rockfill dams using prior knowledge
Abstract Accurate and reliable numerical simulation is crucial for the safe construction and operation of infrastructure such as rockfill dams. Model parameter updating through inverse analysis based on monitoring data is key to improving analysis accuracy.
Zhitao Ai +6 more
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To consider the influence of material parameter uncertainty on the structural deformation of a dam effectively and to establish a reasonable and reliable safety monitoring index for the displacement of a rockfill dam, a method for determining the ...
Li Ran +5 more
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Rockfill dams have better stability than homogeneous soil dams. It allows to design the dam more slim with a higher slope. The disadvantage of rockfill dam is in the core zone as an impermeable zone.
Siswanto Siswanto +2 more
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A characterization model for time‐dependent displacement of concrete dams
Abstract Time‐dependent displacement caused by creep and shrinkage can significantly affect the structural performance and even shorten the service life of a concrete structure, which is designed for decades or longer, resulting in a safety risk. Unlike in long‐spanning structures such as bridges, where the time‐dependent displacement is readily ...
Kefu Yao +4 more
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Air entrainment and splash characteristics in jet flows: Effect of downstream water levels
Abstract This study investigates the air–water interaction dynamics in jet streams, with particular emphasis on the transition from the cavity to the far‐field regions. A dual‐tip conductivity phase‐detection probe was employed to analyze four distinct downstream water levels.
Bai Ruidi, Chen Yang, Xu Weilin
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