A5026735220- Landslides and related hazards
- Geotechnical Engineering and Soil Mechanics
- Soil and Unsaturated Flow
- Rock Mechanics and Modeling
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Climate change and permafrost
- Geotechnical Engineering and Analysis
- Cryospheric studies and observations
- Geoscience and Mining Technology
- Geomechanics and Mining Engineering
- Grouting, Rheology, and Soil Mechanics
- Geotechnical and Geomechanical Engineering
- Granular flow and fluidized beds
- Civil and Geotechnical Engineering Research
- Dam Engineering and Safety
- Geophysical Methods and Applications
- Tunneling and Rock Mechanics
- Model Reduction and Neural Networks
- Drilling and Well Engineering
- Fluid Dynamics Simulations and Interactions
- Mineral Processing and Grinding
- Nonlinear Waves and Solitons
- Random lasers and scattering media
- Microwave Engineering and Waveguides
Central South University
2016-2025
Commercial Aircraft Corporation of China (China)
2025
Institute of Rock and Soil Mechanics
2024
University of Chinese Academy of Sciences
2022-2024
Qinghai University
2023-2024
Southwest Jiaotong University
2006-2024
China Academy of Space Technology
2022-2024
Hohai University
2024
Powerchina Huadong Engineering Corporation (China)
2020-2024
PowerChina (China)
2020-2024
Substantial frost heave has been observed in coarse fills high-speed railway embankments. These have very low water contents, and are located above the groundwater table. In an attempt to explain unexpected heave, it is proposed that cyclic train loads cause development of excess pore pressure underlying subgrade soil, hence ‘pump' up table front, which turn feeds formation ice results continuous heave. A simple quantitative model then developed simulate pumping-enhanced The numerical show...
Canopy effect in this paper refers to the phenomenon whereby moisture accumulates underneath an impervious cover. Field observations reveal that canopy can occur relatively dry soils where groundwater table is deep and lead full saturation of soil immediately However, numerical analysis based on existing theories heat mass transfer unsaturated only reproduce a minor amount accumulation caused by cover, particularly when deep. In attempt explain observed field, proposes new mechanism freezing...
This paper first presents a simple frost heave model. Frost is assumed to be caused by the formation of ice lenses in freezing soil. The governed Clapeyron equation thermodynamics and relies on existence frozen fringe between unfrozen zones. Both water co-exist pores fringe. suction at water–ice interface driving force for flow that feeds growth lens. initiation new lens effective stress concept. model contains only few soil parameters can used compute penetration stratified profiles. second...
A series of laboratory experiments is carried out to replicate moisture accumulation in an unsaturated coarse-grained soil underneath impervious cover. The results show that significant occurs relatively dry specimens when the temperature at cover drops below freezing point. tested a sand and not expected generate much according existing frost susceptibility criteria literature. primary mechanism migration observed be vapour diffusion, ice formation by way vapour–ice desublimation. It also...
The Harbin–Dalian high-speed railway in northeastern China has a significant portion of track foundation built on seasonally frozen ground. Wide-spread frost heave was observed during the first winter its operation and occurred mainly coarse fills that were considered not susceptible to heave. This paper presents field data depth along railway. It then analyses alternative mechanisms have been caused three most likely are poor quality control fine content fill, top-down water supply...
Frost heave in coarse-grained soils caused by vapour transfer has attracted much attention, but little experimental or numerical evidence been reported thus far. A series of laboratory experiments is carried out a frost apparatus and an X-ray micro-computed tomography instrument. The only water supply mechanism to the tested specimen transfer. results indicate that considerable occurs soil specimens with zero fines content. ratio initial height can reach 13·8% 25·1% at 14 days 18 days,...
This paper proposes a simple method for studying the evolution of particle breakage. A two-parameter statistical model is first proposed to describe distribution new particles generated from breakage an initially uniformly graded sample. Markov chain then size non-uniformly samples. The shown be able capture different patterns such as asperity and splitting observed during In model, it that concept ‘effective probability’, define relative extent whole sample, comparable well-established...