Results 61 to 70 of about 6,260 (209)

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

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

Feedback Analysis of Deformation Modulus for an Extra‐High Arch Dam With Dam Height of 300 m Level

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
Deformation is a critical indicator for safety monitoring of arch dams in operation; comparing measured deformation values with calculated ones is a common approach to assess dam behavior. However, deformation calculated based on design deformation parameters often significantly differs from measured values, especially for extra‐high arch dams; to ...
Zhiyong Qi, Dawen Tan, Futing Sun, Shilin Gong, Xuhuang Du, Li Qingchao   +5 more
wiley   +1 more source

Experimental study on hardening effect of creep in rockfill material

Yantu gongcheng xuebao, 2020
The excessive long-term deformation may lead to crack and damage problems in high earth-rockfill dams. The creep effect of rockfill is crucial for the long-term deformation of rockfill dams.
ZHOU Mo-zhen 1, ZHANG Bing-yin 2, QIAN Xiao-xiang 3, SUN Xun 2
doaj   +1 more source

Coupling sPCA‐Based Statistical Modeling With Deep Residual Networks Considering Thermal Effect for Deformation Forecasting in High Dams

Structural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
Accurate prediction of deformation under thermal influences is critical for the safety assessment and long‐term performance of high dams. This study proposes a novel two‐stage prediction framework that integrates statistical modeling with deep learning to enhance the interpretability and accuracy of dam deformation forecasting.
Bo Liu, Fangfang Liu, Fei Song, Francesc Pozo   +3 more
wiley   +1 more source

Construction Problems with an Earth and Rockfill Dam

, 1988
Earth and rockfill dams became popular in the 1960\u27s primarily because of increased heights of dams, poor foundation conditions that rule out concrete dams, and vast improvements in excavation and vibratory compaction equipment.
Hejazi, Hasan
core  

Force Analysis of Inclined Asphalt Concrete Wall Rockfill Dam Structure

, 2011
Through analyzing inclined asphalt concrete wall rockfill dam structure’s mechanical characteristics in construction process and operational process, this paper adopts finite element method to carry out simulation analysis for inclined asphalt concrete ...
Li Xin Han
core   +1 more source

Numerical simulation of size effect on shear strength and deformation behavior of rockfill materials

Yantu gongcheng xuebao, 2018
The scale effect of rockfill materials is crucial to predicting the strength and deformation of earth-rockfill dams. Due to their large particle size and the experimental restrictions, large triaxial tests on full scale samples are seldom conducted.
SHAO Xiao-quan 1,2, CHI Shi-chun 1,2, TAO Yong 3
doaj   +1 more source

Altered flow and sediment transport impacts on the ecosystems of Chinese major rivers: An urgent call for eco‐fluvial dynamics

River, Volume 3, Issue 4, Page 341-361, November 2024.
Abstract River ecosystems face challenges due to environmental degradation and alterations in flow and sediment transport resulting from climate change and other anthropogenic impacts. These changes may substantially affect river morphology, nutrient dynamics, wetland vegetation, aquatic habitats, and river ecological stability.
Hongwei Fang, Guojian He, Lei Huang, Chenwei Zhao, Jianyu Wang, Yong Han, Qifeng Gao, Tao Zhang, Jianan Meng   +8 more
wiley   +1 more source