Results 21 to 30 of about 1,714 (203)

Numerical simulation of coupled water-heat-stress processes related to frost damage of earth rock dam protective structures

Shuili Shuiyun Gongcheng Xuebao
This study focuses on the common problem of frost heave damage to slope protection structures of earth-rock dams in cold regions. An earth-rock dam project located in a cold climate zone is selected as the research subject.
LI Zhuo, JIANG Xin, ZHANG Jixun, ZHAO Yu, WANG Yuqing, FANG Yixiang   +5 more
doaj   +1 more source

Reasonable connection type for cutoff wall and core wall of earth-rock dams on deep overburden layers

Yantu gongcheng xuebao, 2017
The earth-rock dams built on deep overburden layers often use a closed seepage control system which is composed of core wall of dam body and impervious wall of dam foundation.
SHEN Zhen-zhong , TIAN Zhen-yu , XU Li-qun , GAN Lei
doaj   +1 more source

Research on a Critical Hydraulic Gradient of Piping in Noncohesive Soils

Advances in Civil Engineering, 2021
The critical hydraulic gradient of cohesive soil is an important condition for judging soil piping. For force analysis of movable particles in pore channels of soil, this study proposes to consider the influence of surrounding particles on the drag force
Can-Hong Zhang, En-Yue Ji, Bao-Tian Wang
doaj   +1 more source

Experimental study on internal erosion behaviors under fluctuating hydraulic condition using transparent soil

Rock and Soil Mechanics, 2022
Internal erosion is a phenomenon that fine particles migrate through the channels within coarse matrix under seepage flow. Previous studies mainly focused on the internal erosion under steady hydraulic gradient, while the studies on the behavior and ...
DENG Ze-zhi, JI En-yue, WANG Gang
doaj   +1 more source

A state-of-the-art review on the simulation technologies of overtopping-induced breaching process of earth-rock dams

Shui kexue jinzhan
In recent years，climate change has triggered increasingly frequent extreme precipitation events，thereby posing significant challenges to the safe operation of earth-rock dams.
Qiming ZHONG, Zhengchun JIANG, Lingchun CHEN, Yibo SHAN   +3 more
doaj   +1 more source

Safety risk analysis of earth-rock dams based on the DEMATEL-ISM-ANP coupled model: With lianghekou hydropower station for example

Ain Shams Engineering Journal
Earth-rock dams are one of the most widely used dam types worldwide. The safety risk factors of dams typically demonstrate multi-source, inter-coupled, and dynamic features. There are complex interrelationships between these risk factors.
Ankui Hu, Xiaoyang Zhang, Yajing Li, Tianlong Zhang, Baoda Wang   +4 more
doaj   +1 more source

Modal identification of high earth-rock dams based on seismic records and SSI method

Yantu gongcheng xuebao, 2021
Using the measured seismic records to identify the modal parameters of high earth-rock dams is a feasible way to study the dynamic characteristics of dams.
WANG Mao-hua 1, 2, CHI Shi-chun 1, 2, ZHOU Xiong-xiong 3
doaj   +1 more source

Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

American Journal of Botany, EarlyView.
Abstract Premise Changing climates are leading to more frequent and severe heat waves, potentially threatening plant populations. Both acclimation to stress and selection for heat‐escape or heat‐resistance phenotypes occur during heat waves. However, plastic responses and selection do not necessarily interact cohesively—even producing trait responses ...
Lana F. Gaspard, Elissa Harb, Stacy D. Holt Jr., Courtney M. Patterson, Nicholas J. Kooyers   +4 more
wiley   +1 more source

Poseidon's Sanctuary at Samikon—The Discovery of an Ancient Temple Through an Integrated Geophysical and Geoarchaeological Survey Approach for Lagoonal and Swampy Environments

Archaeological Prospection, EarlyView.
ABSTRACT Below the classical fortress of Samikon at the coast of the western Peloponnese, ancient writer Strabo mentioned a sanctuary of Poseidon which served as the centre of the religious association of the Triphylian cities. In this paper, we describe the discovery and investigation of a building structure by means of geophysical and ...
Dennis Wilken, Birgitta Eder, Sarah Bäumler, Elena Appel, Peter Fischer, Tina Georg, Federica Iannone, Lena Slabon, Timo Willershäuser, Erofili‐Iris Kolia, Andreas Vött   +10 more
wiley   +1 more source

Major Technologies for Safe Construction of High Earth-Rockfill Dams

Engineering, 2016
The earth-rockfill dam is one of the primary dam types in the selection of high dams to be constructed in Western China, since it is characterized by favorable adaptability of the dam foundation; full utilization of local earth, rock, and building ...
Hongqi Ma, Fudong Chi
doaj   +1 more source