scholarly journals Mechanisms of salt rejection at the ice-liquid interface during the freezing of pore fluids in the seasonal frozen soil area

China Geology ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 449-457
Author(s):  
Huan Huang ◽  
◽  
Chang-fu Chen ◽  
Xiao-jie Mo ◽  
Ding-ding Wu ◽  
...  
Keyword(s):  
Liquid Interface ◽  
Frozen Soil ◽  
Pore Fluids ◽  
Salt Rejection ◽  
Seasonal Frozen Soil ◽  
Soil Area

Research on Frost Heaving of Subgrade Filling in Seasonal Frozen Soil Area

2014 ◽  
Vol 1065-1069 ◽  
pp. 783-787
Author(s):  
Jin Fang Hou ◽  
Rui Qi Zhang ◽  
Jian Yu
Keyword(s):  
Water Content ◽  
High Speed ◽  
Freezing Temperature ◽  
Frozen Soil ◽  
Coarse Grained ◽  
Freezing And Thawing ◽  
Frost Heaving ◽  
Factors Affecting ◽  
Seasonal Frozen Soil ◽  
Soil Area

Research on frost heaving of high speed railway subgrade filling in seasonal frozen soil area is developed indoor. Through freezing and thawing strength and frost heaving amount test, the research analyzes factors affecting frost heaving of subgrade filling, points out that water content, fine stuff admixing amount and plasticity of fine-grained soil have relatively large influence on frost heaving, while freezing temperature and freezing and thawing cycle index have relatively small influence. Water content is main factor to have effect on frost heaving of subgrade filling. When the water content reaches to some certain value, even coarse-grained soil can produce considerable frost heaving amount. Therefore, taking effective waterproof and drainage measures is of great importance in subgrade frost heaving prevention and treatment.

scholarly journals Detection of Pipeline Deformation Induced by Frost Heave Using OFDR Technology

2021 ◽  
Vol 9 ◽  
Author(s):  
Tao Jiang ◽  
Jing-wen Zhu ◽  
Yi Shi
Keyword(s):  
Oil And Gas ◽  
Plane Curve ◽  
Reconstruction Algorithm ◽  
Deformation Monitoring ◽  
Frozen Soil ◽  
Frost Heave ◽  
Curve Reconstruction ◽  
Seasonal Frozen Soil ◽  
Distributed Strain ◽  
Soil Area

Oil and gas pipelines are critical structures. For pipelines in the seasonal frozen soil area, frost heave of the ground will result in deformation of the pipeline. If the deformation continually increases, it will seriously threaten the pipeline safety. Therefore, it is important to monitor the deformation of the pipeline in the frozen soil area. Since optic frequency–domain reflectometer (OFDR) technology has many advantages in distributed strain measurement, this paper utilized the OFDR technology to measure the distributed strain and use the plane curve reconstruction algorithm to calculate the deformed pipeline shape. To verify the feasibility of this approach, a test was conducted to simulate the pipeline deformation induced by frost heave. Test results showed that the pipeline shape can be reconstructed well via the combination of the OFDR and curve reconstruction algorithm, providing a valuable approach for pipeline deformation monitoring.

Influence of Seasonal Frozen Soil on Near‐Surface Shear Wave Velocity in Eastern Hokkaido, Japan

2019 ◽  
Vol 46 (16) ◽  
pp. 9497-9508 ◽  
Author(s):  
Y. Miao ◽  
Y. Shi ◽  
H. Y. Zhuang ◽  
S. Y. Wang ◽  
H. B. Liu ◽  
...  
Keyword(s):  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Frozen Soil ◽  
Surface Shear ◽  
Near Surface ◽  
Seasonal Frozen Soil ◽  
Surface Shear Wave

Effects of different biochar application methods on soybean growth indicator variability in a seasonally frozen soil area

CATENA ◽  
2020 ◽  
Vol 185 ◽  
pp. 104307 ◽  
Author(s):  
Qinglin Li ◽  
Heng Li ◽  
Qiang Fu ◽  
Tianxiao Li ◽  
Dong Liu ◽  
...  
Keyword(s):  
Frozen Soil ◽  
Application Methods ◽  
Soil Area ◽  
Growth Indicator

Pile Foundation Antifreezing Measures Research in Seasonal Frozen Soil Region

2014 ◽  
Vol 578-579 ◽  
pp. 767-771 ◽  
Author(s):  
Ji Qiang Song
Keyword(s):  
Water Content ◽  
Water Level ◽  
Pile Foundation ◽  
Underground Water ◽  
Frozen Soil ◽  
Foundation Soil ◽  
Freeze Injury ◽  
Seasonal Frozen Soil ◽  
Bored Piles ◽  
Underground Water Level

Canal bridge and aqueduct main foundation types include well column, pier, bored piles, bent pile etc. Most of these foundations are in low-lying conduit. The water content of foundation soil is very rich. Especially pile foundation in the drain, due to the high underground water level, pile foundation around soil is in a state full of water. So such type of foundation freeze injury phenomenons are very serious. In order to solve such freeze injury problems, some antifreezing measures are adopted.

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