Results 31 to 40 of about 578 (183)
Development and initial application of test devices for leakage of earth-rockfill dams
To accurately simulate the seepage characteristics of earth-rockfill dams during leakage, a test device is developed. The device can precisely control the test variables such as platform slope, water supply discharge, water temperature, etc.
MA Zhaoyang , REN Jie , NAN Shenghao , XU Song
doaj +1 more source
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
wiley +1 more source
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
doaj +1 more source
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
wiley +1 more source
New Type of Dam for Longitudinal Reinforced Rockfill Dam and Its Operation Safety Analysis
After a long time operation, a conventional earth rockfill dam (e.g. homogeneous dam or core wall dam) may suffer from a lot of dam diseases such as dam-break, overtopping, landslides and leakage. On the basis of a large number of practices of rebuilding
Jun LIANG
doaj
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
wiley +1 more source
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
doaj +1 more source
Abstract Underpinned by the ultrahigh‐core rockfill dam at the Nuozhadu Hydropower Station, comprehensive studies and engineering practices have been conducted to address several critical challenges: coordination of seepage deformation in dam materials, prevention and control of high‐water‐pressure seepage failure, static and dynamic deformation ...
Biao Liu +6 more
wiley +1 more source
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
doaj +1 more source
Abstract Degradation within a manmade earth embankment structure is often unobservable from the surface. In order to evaluate the structural integrity of earth embankment levees and dams and identify subsurface zones of weakness that may result in the future failures of such structures, various geophysical methods have been proposed as effective ...
Steven J. Maniscalco, John E. Ebel
wiley +1 more source

