Study on the Effect of Subsoil Replacement on the Frozen Deformation of Channel Bank Slopes

DOI

10.2991/978-94-6463-336-8_86How to use a DOI?

Keywords

channel frost heave; frozen soil; replacement soil

Abstract

The water content of base soil is one of the main factors affecting the subsidence of channel bank slopes, the fluffier the soil quality of bank slopes, the greater the water content, the greater the deformation of channel bank slopes, the use of non-frost-sensitive materials to replace the bank slopes of the wet subsidence of the soil is an effective way to solve the frequent freezing and expansion of the channel bank slopes. To solve the problem of frost-distension damage caused by the change of groundwater level and repeated freezing and thawing of seasonally frozen soil foundation in the cold and dry irrigation area of Northwest China, according to the idea of improving the material properties of the frost-distension-sensitive area by replacing the subsoil, we analyze the influence of different replacing materials and depth of replacing on frost-distension of channels through the subsoil replacing test on the site. The results show that: after the soil foundation in the frost-sensitive area of the channel is replaced by 30 mm, 50 mm, and 70 mm thick gravel and fine sand respectively, the frost deformation of the channel bank slope and the base is reduced, and the effect of gravel on the deformation of frost deformation is better than that of fine sand; with the increase of the thickness of the replacement, the reduction of frost deformation is also on a decreasing trend. The research results can provide a theoretical basis and technical support for the anti-freezing and expansion structural modification of channels in permafrost areas.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Qingsheng Yang
AU  - Hairuo Wang
AU  - Haichen Zhang
AU  - Yan Wang
AU  - Hui Xu
PY  - 2023
DA  - 2023/12/30
TI  - Study on the Effect of Subsoil Replacement on the Frozen Deformation of Channel Bank Slopes
BT  - Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
PB  - Atlantis Press
SP  - 758
EP  - 768
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-336-8_86
DO  - 10.2991/978-94-6463-336-8_86
ID  - Yang2023
ER  -