Results 41 to 50 of about 31,172 (208)

Immersion test and collapsibility evaluation of deep loess site

Shuili Shuiyun Gongcheng Xuebao, 2023
Field immersion test is an important means to study the characteristics of self-gravity collapsibility of deep loess site and evaluate its collapsibility.
WANG Feng, LIU Deren, CHENG Fuqiang, HUO Yuan, BAI Zhizhang, XU Shuochang   +5 more
doaj   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

The treatment of collapsible loess soils using cement materials

, 2008
Loess is a metastable collapsible soil, whose collapse can cause significant distress to the built environment across the world. This paper presents a case history illustrating how with proper pre-treatment assessment and careful selection, a cement ...
Evstatiev, Dimcho, Karastanev, D, Evstatiev, D, Jefferson, Ian; id_orcid, Karastanev, Doncho   +4 more
core   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

Self-weight collapsible characteristics of loess in Xi'an urban area

Yantu gongcheng xuebao
Based on the results of 12 large test pit immersion tests of loess and indoor collapsibility tests conducted during the construction process of Xi'an Rail Transit project, the self-weight collapsible deformation characteristics of loess in Xi'an urban ...
KANG Zuo 1 , KANG Jiawei 2, DENG Guohua 2, 3, ZHENG Jianguo 4, WANG Liqin 2, GAO Huyan 1
doaj   +1 more source

Model tests on bearing behavior of pile groups in collapsible loess ground under water immersion

Yantu gongcheng xuebao, 2021
The artificially prepared collapsible loess is used as the similar material to carry out 2×2 pile group model tests under water immersion.The change law of collapsibility deformation and the load transfer mechanism are analyzed.The results show that with
ZHANG Yan-jie 1, 2, WANG Xu 1, LIANG Qing-guo 1, JIANG Dai-jun 1, LI Jian-dong 1
doaj   +1 more source

Insect communities of late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada

Journal of Quaternary Science, EarlyView.
ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker, Svetlana Kuzmina, Nick Schafstall, Michael A. Monzon, Duane G. Froese   +4 more
wiley   +1 more source

Rainfall‐Induced Physical Crusting Is Associated With Near‐Surface Structural Degradation and Strain Localization During Drying in Loess Soil

Land Degradation &Development, EarlyView.
ABSTRACT Rainfall‐induced physical crusting is associated with degradation of near‐surface soil structure, but its pore‐scale structural and mechanical evolution during drying remains poorly resolved. We combined time‐resolved X‐ray computed tomography (XCT), digital volume correlation (DVC), and surface‐aligned stratification to track pore ...
Ruikun Feng, Yiru Chen, Guanheng Liu, Qinqian Meng, Jian Wang   +4 more
wiley   +1 more source

Numerical limit analysis of the ultimate load bearing capacity of a pier foundation under complex load [PDF]

MATEC Web of Conferences, 2019
A pier foundation has plenty of advantages as the foundation form for large onshore wind turbines in the terrain of the Gobi desert and collapsible loess areas.
Wang H F, Cheng X H
doaj   +1 more source

Ecosystem engineers and functional dominance: when species loss matters for ecosystem function

Oikos, EarlyView.
Understanding when and why species loss affects community function in natural communities remains an open question in ecology. Recent cross‐system analyses have shown that functional dominance is associated with whether species loss matters: in communities dominated by few high‐performing species, lost species contribute little to function.
Gianluca Sarà, Yun‐wei Dong, Maria Cristina Mangano   +2 more
wiley   +1 more source