Results 51 to 60 of about 409 (179)

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

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

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

Research on Grouting Pressure of Earth–Rock Dams Reinforced by Polymer Based on Discrete Elements

Applied Sciences
As a novel seismic reinforcement measure for earth–rock dams, the PFA-reinforced rockfill materials technology lacks comprehensive investigation into both its reinforcement efficacy and the underlying mechanisms. In this study, we establish a fluid–solid
Yanyuan Lv, Jianxin Wang, Hongmei Li, Jianing Zhu   +3 more
doaj   +1 more source

Experimental study on filling standard of high rockfill dams with soil core

Yantu gongcheng xuebao, 2019
The monitoring data of high ECRDs have shown that the deformation coordination in dam material zones does not meet the design goal, which is related to the degree of matching in the current specifications of filling for the filtration zone, transition ...
ZHU Sheng 1, 2, ZHONG Chun-xin 1, WANG Jing 1, 2, HE Shun-bin 3
doaj   +1 more source

Field Experimental Study on Dynamic Response of Soft Foundation During Dynamic Compaction Replacement Construction

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
To investigate the dynamic response of soft soil foundation, field tests were conducted on a highway project in the mountainous area of Guizhou, where the dynamic replacement (DR) method was applied for foundation improvement. The evolution of excess pore water pressure and ground acceleration response during the compaction process was studied.
Shaolong Li, Zheng Liu, Xiangchuan Zhang, Guifang Qin, Rusong Nie, Yi Shan   +5 more
wiley   +1 more source

A three-dimensional elasto-plastic dynamic response procedure for concrete-faced rockfill dams

International Journal of Distributed Sensor Networks, 2018
Equivalent linear dynamic analysis is the primary method of analysis for concrete-faced rockfill dams during earthquake. However, this method cannot be directly used to estimate permanent deformation during earthquake, which is important to evaluate the ...
Bin Xu, Yang Zhou, Jingmao Liu, Xiang Yu
doaj   +1 more source

Experimental study on sand slate rockfill materials for ultra-high asphalt concrete core dams

Yantu gongcheng xuebao
A series of tests are conducted on the engineering mechanical properties of sand slate rockfill materials for an ultra-high asphalt concrete core dam. It is found that with the increase of the porosity and slate content, the softening behavior of stress ...
ZHANG Shi 1, WU Shiyong 1, WU Zhong 1, LING Hua 2, 3, FU Hua 2, 3, SHI Beixiao 2, 3
doaj   +1 more source

Slaking deformation model for rockfill materials

Yantu gongcheng xuebao, 2017
The safety of core wall type rockfill dams during reservoir impounding is greatly affected by the slaking deformation of upstream shell materials. The slaking deformation of the rockfill materials is analyzed using the triaxial slaking tests, in which ...
CHI Shi-chun , ZHOU Xiong-xiong
doaj   +1 more source