Results 61 to 70 of about 803 (219)

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

Elastoplasticity constitutive model considering loading-induced deformation and creep behavior of coarse granular soils and its application

Yantu gongcheng xuebao, 2019
The field observations show that the existing widely-used constitutive models tend to underestimate the settlement of dams higher than 200 m. One of the main reasons is the separation of load-induced deformation and creep in such models and the ...
CHEN Sheng-shui 1,2, FU Zhong-zhi 1,2, SHI Bei-xiao 1, YUAN Jing 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

Modelling the equalizing process of rockfill dumps with a plough: Subsea cut and transport processes

, 2011
A way to equalize granular rockfill dumps at a sea or river bed is the use of a plough. A plough can be modeled as a set of straight blades in sequence. Several cutting models for dry and saturated sand are present in the literature.
Kranendonk, W.J. (Wouter), Kranendonk, W.J. (author)   +1 more
core   +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

Back analysis on damage mechanism of concrete face slab of JL CFRD

Yantu gongcheng xuebao
In this study, JL Concrete Faced-Rockfill Dam (CFRD) has a maximum height of 140.3 m and is constructed using granite and quartz porphyry rockfills. During its initial operation, the dam encountered issues such as water-stop damage, slab cracking, and ...
HUANG Wenbin1 , WU Junjie2, MI Zhankuan1, 3 , WEI Kuangmin1, 3, WANG Fang1
doaj   +1 more source

Theoretical basis and application verification of scale effects of deformation characteristics of rockfill

Yantu gongcheng xuebao, 2020
In view of the scale effects of deformation characteristics of rockfill, based on the contact deformation theory, the research is carried out from the perspective of particle sizes, specimen sizes and external factors, combined with the test method.
WEI Ran , WU Shuai-feng , WANG Xiao-gang , CAI Hong
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

Cyclic and post-cyclic monotonic behavior of crushed conglomerate rockfill material under dry and saturated conditions

, 2012
The seismic behavior of two conglomerate rockfill materials used in two high rockfill dams, subjected to earthquake loads, has been studied. In order to evaluate the dynamic behavior, an extensive series of monotonic and cyclic tests were carried out on ...
Aghaei Araei, A., Hashemi Tabatabaei, S., Razeghi, H.R.   +2 more
core   +1 more source

Dependence of shape on particle size for a crushed rock railway ballast [PDF]

, 2013
Laboratory testing of railway ballast poses practical difficulties because the particle size is often too large for most standard apparatus. There are therefore advantages in developing a scaled material whose behavior is representative of the full size ...
Le Pen, Louis, Powrie, W., Ahmed, S., Ahmed, Sharif, Zervos, Antonis, Powrie, William, Le Pen, L., Aingaran, Sinthuja, Zervos, A., Aingaran, S.   +9 more
core   +1 more source