Results 51 to 60 of about 423 (176)

Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate

Journal of Flood Risk Management, Volume 18, Issue 1, March 2025.
ABSTRACT A large‐scale experimental model of instantaneous dike‐break induced flow was conducted in this work. Water level variations in the river channel and floodplain, breach discharge, and the surface velocity field at the breach were measured during dike failure.
Dawei Zhang, Zhongxiang Wang, Huiwen Liu, Wuxia Bi   +3 more
wiley   +1 more source

Effects of porosity on strength and deformation of rockfill materials

Yantu gongcheng xuebao, 2018
In view of the rockfill materials utilized in a 300 m - grade high earth-rock core rockfill dam to be constructed, large static triaxial tests under different porosities are performed to analyze the influences of porosity on strength and deformation of ...
XU Wei-wei1 , SHI Bei-xiao 2,3, CHEN Sheng-shui 2, LING Hua 2,3
doaj   +1 more source

Three‐dimensional characterization of particle morphology in natural gravel and blasted rock fragments using SfM‐MVS photogrammetry

River, Volume 4, Issue 1, Page 70-83, February 2025.
Structure from Motion‐Multi‐View Stereo photogrammetry 3D reconstruction. Abstract This study aims to develop a high‐precision and cost‐efficient method for the three‐dimensional reconstruction of large particles in natural gravel and blasted rock fragments, utilizing Structure from Motion (SfM) and Multi‐View Stereo (MVS) techniques.
Hongchen Liu, Zitao Zhang, Huaizhi Su, Xuedong Zhang, Jing Hu   +4 more
wiley   +1 more source

Coarse‐Grained Ore Distribution on Conveyor Belts With TRCU Neural Networks

IET Image Processing, Volume 19, Issue 1, January/December 2025.
(1) The method can be used as technical support and the basis for subsequent real‐time particle size detection in the beneficiation process. (2) The proposed model combines Transformer and residual blocks with the CBAM attention mechanism in the encoder‐decoder. (3) The proposed model can effectively partition the ore particles of different grain sizes.
Weinong Liang, Xiaolu Sun, Yutao Li, Yang Liu, Guanghui Wang, Jincheng Wang, Chunxia Zhou   +6 more
wiley   +1 more source

Research on the influence of gradation variation on the mechanical properties of rockfill material

Shuili Shuiyun Gongcheng Xuebao
The variation in particle gradation of the rockfill material used for dam construction significantly affects its mechanical properties, thus influencing the stability and safety of the rockfill dams.
WU Shiyong, ZHANG Shi, WU Zhong, SHI Beixiao, FU Hua, LING Hua   +5 more
doaj   +1 more source

Marine Fish Passage—Underappreciated Threats to Connectivity Within the Marine Environment

Marine Ecology, Volume 46, Issue 1, January 2025.
ABSTRACT Habitat fragmentation is a major threat to aquatic biodiversity loss. However, much of the focus is on the connectivity of freshwaters, with much less attention given to marine ecosystems. We contend that coastal infrastructure including bridges, causeways, tidal turbines, land infilling and harbours, wharfs, quays, piers and docks have ...
Robert J. Lennox, Kim Birnie‐Gauvin, Caitlin Bate, Steven J. Cooke, Tormod Haraldstad, Saron Berhe, Heather D. Penney, Charles W. Bangley, Knut Wiik Vollset, Morgan L. Piczak   +9 more
wiley   +1 more source

Study on adaptability of generalized plasticity model of rockfill materials under various stress paths

Shuili Shuiyun Gongcheng Xuebao, 2017
Taking tests of granite rockfill materials under various stress paths (e.g., triaxial test, constant p test and constant stress ratio test) as a case study, comparison between the generalized plasticity model and Shen's double yield surface model is made
BIAN Shihai, LI Guoyin, WEI Kuangmin, MI Zhankuan   +3 more
doaj   +1 more source

Enhanced Stability and Liquefaction Resistance of Earth Dams With a Proposed Method of Geosynthetic Reinforcements

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
This study evaluates the static and seismic stability of the Narasimharaya Sagar (Gorukallu Balancing Reservoir) earthen dam, located in India’s seismically active Zone II. Using GeoStudio software, seepage, slope stability, and liquefaction analyses were conducted to assess the dam’s performance under static and dynamic conditions.
Chih-Wei Lu, Sufiyan Ahmad, Zaid Mohammad, Wei-Lin Lee, Hsiu-Chen Wen, Yu-Feng Lin, Arnab Biswas   +6 more
wiley   +1 more source

Causes of Tensile Strain of Asphalt Concrete Core Wall of Rockfill Dam in High‐Cold Area During Construction

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
Asphalt concrete core rockfill dams, favored for their superior impermeability and adaptable deformation capacity (effectively accommodating uneven settlement), have been gaining increasing attention in Chinese engineering practice. However, ensuring safety during high‐temperature paving and subsequent cooling remains crucial.
Min Yuan, Lu Zhang, Jianqiao Wan, Yongfeng Qi, Zhiqiang Xie, Wenqiang Xu, Caihong Zhang, Yun Dong, Yi Shan   +8 more
wiley   +1 more source

Experimental study on particle breakage behaviors of rockfill under cyclic loadings

Yantu gongcheng xuebao, 2017
Using the large-scale dynamic triaxial apparatus, a series of cyclic drained triaxial shearing tests are performed on there kinds of rockfill materials with different confining pressures, consolidation stress ratios and dynamic stress amplitudes to ...
ZHANG Zhen-dong 1, 2, LI Guo-ying 1
doaj   +1 more source