Results 11 to 20 of about 1,830,996 (296)

Creep behavior of frozen soil and creep analytical model of frozen wall. [PDF]

Sci Rep
Taking the Gubei Mine as the research object, indoor uniaxial creep tests were carried out at temperatures of -5, -10, and -15℃ under loads of 0.3, 0.5, and 0.7σs to study the creep characteristics of deep soil, Based on the Burgers rheological model and the auxiliary formula of viscoelastic rheological formula, the freezing pressure under the combined
Chen Z, Lin B, Hou H.
europepmc   +4 more sources

Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions

Advances in Materials Science and Engineering, 2021
Traditional embankment is widely used in the permafrost regions along the Qinghai-Tibet Railway (QTR) because of its simple construction and lower cost. However, this form of embankment has insufficient ability to resist external thermal disturbance.
Qihang Mei, Ji Chen, Shouhong Zhang, Xin Hou, Jingyi Zhao, Jinchang Wang, Haiming Dang, Guojun Liu, Guilong Wu   +8 more
doaj   +1 more source

Heterogeneity of Surface Heat Exchange of Slopes and Potential Drivers of the Initiation of Thaw Slump, Qinghai-Tibet Plateau

International Journal of Disaster Risk Science, 2023
In the mountainous permafrost area, most thaw slumps are distributed in north or northeast-facing shady slope areas. It is commonly known that there is a heterogeneity in permafrost between different slope aspects, but there has been a lack of detailed ...
Xingwen Fan, Wenjiao Li, Xuyang Wu, Miaomiao Yao, Fujun Niu, Zhanju Lin   +5 more
doaj   +1 more source

Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes

Advances in Climate Change Research, 2023
Pile foundations combined with ventilation spaces under floors are the most common method in buildings over permafrost. The safety and stability of buildings are closely related to the temperature of permafrost.
Xin HOU, Ji CHEN, Yu SHENG, Peng-Fei RUI, You-Qian LIU, Shou-Hong ZHANG, Tian-Chun DONG, Jia-Wei GAO   +7 more
doaj   +1 more source

Identification and Correlation Analysis of Engineering Environmental Risk Factors along the Qinghai–Tibet Engineering Corridor

Remote Sensing, 2022
Global warming has increased the security risk of permafrost environment in the Tibetan Plateau, which has been threatening infrastructures along the Qinghai–Tibet Engineering Corridor (QTEC).
Tianqi Zhang, Wenbing Yu, Yan Lu, Lin Chen   +3 more
doaj   +1 more source

The Rheology of Frozen Soils

Applied Rheology, 2007
Applied ...
Kroger, Martin, Editor Applied Rheology, editors@appliedrheology.org   +2 more
openaire   +3 more sources

Strengthening effect of crushed rock revetment and thermosyphons in a traditional embankment in permafrost regions under warming climate

Advances in Climate Change Research, 2021
The embankment of the Qinghai–Tibet Railway (QTR) has been experiencing severe problems due to permafrost degradation, especially in warm and ice-rich permafrost regions.
Qi-Hang Mei, Ji Chen, Jin-Chang Wang, Xin Hou, Jing-Yi Zhao, Shou-Hong Zhang, Hai-Ming Dang, Jia-Wei Gao   +7 more
doaj   +1 more source

Differences in respiration components and their dominant regulating factors across three alpine grasslands on the Qinghai−Tibet Plateau

Advances in Climate Change Research, 2023
Greenhouse gases (GHGs) emissions from high-cold terrestrial ecosystems underlain by permafrost on the Qinghai–Tibet Plateau (QTP) have received widespread attention. However, the dominant factors regulating ecosystem respiration (Re) and its components (
Ya-Li Liu, Jun-Feng Wang, Guan-Li Jiang, Lu-Yang Wang, Zi-Teng Fu, Ho-Jeong Kang, Qing-Bai Wu   +6 more
doaj   +1 more source

Microbial mineralization of cellulose in frozen soils [PDF]

Nature Communications, 2017
AbstractHigh-latitude soils store ~40% of the global soil carbon and experience winters of up to 6 months or more. The winter soil CO2 efflux importantly contributes to the annual CO2 budget. Microorganisms can metabolize short chain carbon compounds in frozen soils. However, soil organic matter (SOM) is dominated by biopolymers, requiring exoenzymatic
Segura JH, Nilsson MB, Haei M, Sparrman T, Mikkola JP, Gräsvik J, Schleucher J, Öquist MG   +7 more
openaire   +4 more sources

Microcosmic pore characteristics evolution of the cement improved frozen soil after thawing compression

Shuiwen dizhi gongcheng dizhi, 2021
The research on microcosmic characteristics evolution of the cement improved frozen soil under thawing compression is of great significance to understand the process of the improvement. In this study, Thawing compression test is conducted with the cement
Zhenhua YIN, Jianming ZHANG, Hu ZHANG, Honglei WANG   +3 more
doaj   +1 more source