Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)

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Experimental Study on the Evolution Characteristics of Pore Structure in Soil-Rock Mixtures under Stress-Permeation Conditions

Authors
Tianming Chen1, Wen Sun1, *
1School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
*Corresponding author. Email: sunwen@lzjtu.edu.cn
Corresponding Author
Wen Sun
Available Online 13 June 2024.
DOI
10.2991/978-94-6463-435-8_43How to use a DOI?
Keywords
Soil-rock mixtures; Seepage erosion; Nuclear Magnetic Resonance; Pore evolution
Abstract

Within soil-rock mixtures, there exist numerous pores, and under the action of seepage, particles migrate along internal pore channels, leading to structural damage and disasters such as dam collapses and landslides. In practical situations, pore development under seepage often occurs under complex stress conditions, influenced by factors such as confining pressure and water pressure. To address research needs, triaxial permeability tests and Nuclear Magnetic Resonance (NMR) experiments were conducted on cohesive soil-rock mixtures to investigate the influence of confining pressure and water pressure-induced changes in internal porosity and pore structure on permeability. The results indicate that: the greater the water pressure, the larger the permeability coefficient, while the greater the confining pressure, the smaller the permeability coefficient; the action of water pressure promotes the development of pores under seepage, whereas the action of confining pressure inhibits pore development; pores of different sizes exhibit different sensitivities to confining pressure and water pressure; the relationship between pores and permeability coefficient is complex, influenced by multiple factors.

Copyright
© 2024 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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Volume Title
Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)
Series
Atlantis Highlights in Engineering
Publication Date
13 June 2024
ISBN
978-94-6463-435-8
ISSN
2589-4943
DOI
10.2991/978-94-6463-435-8_43How to use a DOI?
Copyright
© 2024 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.

Cite this article

risenwbib
TY  - CONF
AU  - Tianming Chen
AU  - Wen Sun
PY  - 2024
DA  - 2024/06/13
TI  - Experimental Study on the Evolution Characteristics of Pore Structure in Soil-Rock Mixtures under Stress-Permeation Conditions
BT  - Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)
PB  - Atlantis Press
SP  - 406
EP  - 413
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-435-8_43
DO  - 10.2991/978-94-6463-435-8_43
ID  - Chen2024
ER  -