Results 21 to 30 of about 12,735,996 (314)

Effects of Grain Size Distribution on Landslide Dam Breaching—Insights From Recent Cases in China

open access: yesFrontiers in Earth Science, 2021
Landslide dams are common geological features in mountainous areas, which may have serious consequences due to sudden breaching of the dam. An effective emergency response requires rapid and accurate forecasts regarding the landslide dam breach process ...
Shengyao Mei   +7 more
doaj   +1 more source

Numerical model for breach of concrete face sand-gravel dams due to overtopping

open access: yesYantu gongcheng xuebao, 2019
Based upon the data of field investigations and back analysis of centrifugal model tests for the beach case of the Gouhou concrete face sand-gravel dam (CFSGD), a numerical model for breach of CFSGD is developed. The major highlights of the model are the
ZHONG Qi-ming 1, 2, SHEN Guang-ze 1
doaj   +1 more source

Numerical analysis of optimization of revetment structures of soil bank slopes of inland rivers

open access: yesYantu gongcheng xuebao, 2020
The revetment structure can reduce the damage of soil bank slopes caused by water erosion, but its influences on the physical and mechanical processes such as seepage and deformation of the existing bank slopes should be fully considered in practice ...
ZHANG Chen 1, QIAN Ya-jun 1, ZHANG Gui-rong 1, 2, ZHAN Xiao-lei 1, ZHU Rui 1
doaj   +1 more source

Application of displacement multi-point constraint refinement method in simulation of concrete-faced rockfill dams

open access: yesYantu gongcheng xuebao, 2020
In the numerical simulation of a concrete-faced rockfill dam, to consider the accuracy and efficiency of calculation, the concrete slab can be simulated using fine mesh and the rockfill can be simulated using relatively coarse mesh. Therefore, the proper
WEI Kuang-min 1, 2, CHEN Sheng-shui 1, 2, LI Guo-ying 1, 2, MI Zhan-kuan 1, 2, FU Zhong-zhi 1, 2
doaj   +1 more source

Numerical modeling of breach process of landslide dams due to overtopping and its application

open access: yesYantu gongcheng xuebao, 2018
As a production of natural process, the landslide dam has poor structural stability, and most of which will finally fail due to overtopping, which will pose tremendous risks to the people and property in the inundated area.
SHEN Guang-ze 1, SHENG Jin-bao 1,2, XIANG Yan 1,2, ZHONG Qi-ming 1,2
doaj   +1 more source

Experimental study on strength and deformation of filling materials of super-high dams with wide confining pressures under loading and unloading conditions

open access: yesYantu gongcheng xuebao, 2021
The triaxial tests with wide confining pressures under loading and unloading conditions are carried out to study the strength and deformation of filling materials of super-high dams.
LING Hua1, 2, , CHEN Sheng-shui 1, 2, ZHAI Ying-chun 3, FU hua 1, 2, SHI Bei-xiao 1, 2, WANG Fang 1, 2
doaj   +1 more source

A simplified physically-based breach model for a high concrete-faced rockfill dam: A case study

open access: yesWater Science and Engineering, 2018
A simplified physically-based model was developed to simulate the breaching process of the Gouhou concrete-faced rockfill dam (CFRD), which is the only breach case of a high CFRD in the world.
Qi-ming Zhong   +2 more
doaj   +1 more source

Numerical modeling of earthen dam breach due to piping failure

open access: yesWater Science and Engineering, 2019
Based on model tests of earthen dam breach due to piping failure, a numerical model was developed. A key difference from previous research is the assumption that the cross-section of the pipe channel is an arch, with a rectangle at the bottom and a ...
Sheng-shui Chen   +2 more
doaj   +1 more source

Development of centrifuge model test equipment for canals in seasonal frozen areas under cyclic action of wetting-drying and freeze-thaw

open access: yesYantu gongcheng xuebao, 2020
Seasonal frozen soil accounts for more than half of China's land area. The canals located in the seasonal frozen areas undergo a wetting-drying and freeze-thaw cycle with seasonal change and periodic change of water supply and suspension, thus causing ...
HUANG Ying-hao 1, 2, CAI Zheng-yin 1, 2, ZHU Rui 2, ZHANG Chen 2, GUO Wan-li 2, ZHU Xun 2, CHEN Yong 2
doaj   +1 more source

Experimental study on effects of gradation on strength and deformation of coarse-grained soil

open access: yesYantu gongcheng xuebao, 2017
Eight large-scale triaxial tests on coarse-grained soil with different lithologies are carried out. The effects of gradation on strength, deformation, dilatancy and particle breakage characteristics of coarse-grained soil are discussed.
LING Hua 1,2, FU Hua 1,2, HAN Hua-qiang 1,2
doaj   +1 more source

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