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Updated: Jul 2, 2025
08:01
A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
Published on: August 18, 2022
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Study of hydrothermal processes in ice-layers subgrade under constant temperature and dynamic loading
Jinbang Zhai1, Ze Zhang2, Linzhen Yang3,4,5
1School of Transportation/Ministry of Education Observation and Research Station of Permafrost Geo-Environment System in Northeast China/Permafrost Institute, Northeast Forestry University, Harbin, 150040, People's Republic of China.
Scientific Reports
|February 17, 2024
Summary
Dynamic loading significantly impacts road subgrade hydrothermal states in permafrost regions. Controlling soil temperature is crucial to prevent moisture accumulation in ice-layered subgrades.
Area of Science:
- Geotechnical Engineering
- Permafrost Science
- Civil Engineering
Background:
- Road subgrades in island permafrost regions contain ice layers, making them vulnerable to environmental changes.
- Understanding the hydrothermal behavior of these subgrades is critical for infrastructure stability.
Purpose of the Study:
- To investigate the hydrothermal response of ice-layered subgrade soils under constant temperature and dynamic loading.
- To analyze the effects of dynamic loads on temperature, moisture, and pore water pressure distribution.
Main Methods:
- Conducted a hydrothermal study on subgrade soil samples containing ice layers.
- Applied constant temperature conditions and dynamic loading to simulate environmental and traffic stresses.
- Monitored changes in temperature, moisture content, and pore water pressure.
Main Results:
- Dynamic loading altered the distribution of temperature, moisture, and pore water pressure.
- Significant changes in hydrothermal and pore water pressure states were observed in the upper ice layer soil at the test's start.
- Dynamic loads induced spatial pore water pressure differences, driving moisture migration and concentrating moisture below the load.
Conclusions:
- Dynamic loading affects the hydrothermal state and moisture distribution in ice-layered subgrades.
- Reduced soil temperature can mitigate the impact of dynamic loads.
- Controlling soil temperature is essential for preventing moisture accumulation in frozen subgrades with ice layers.
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