Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)

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Study on Seepage Characteristics of Soil-rock Mixture Considering the Influence of Gap Grading Conditions

Authors
Qiong Wu1, Mengkai Lin1, Wen Sun1, *, Jing Wu1, Shenqi Yang1, Jiangjiang Zhang1
1Department of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, China
*Corresponding author. Email: sunwen@lzjtu.edu.cn
Corresponding Author
Wen Sun
Available Online 31 January 2025.
DOI
10.2991/978-94-6463-650-5_32How to use a DOI?
Keywords
Soil-rock Mixture; Gap interval; Gap-graded; Seepage characteristics; Permeability coefficient
Abstract

The seepage action leads to a significant loss of fine particles in soil-rock mixtures, which is the primary reason for the seepage failure of hydraulic structures. Existing research mainly focuses on the comprehensive effects of varying fine particle content and confining pressure on the seepage characteristics of soil-rock mixtures, with little attention given to the evolutionary characteristics of seepage under different gap intervals and particle size continuity conditions. Based on this, this paper conducts indoor GDS triaxial permeability tests and coupled numerical simulations to study the effects of gap intervals and particle size continuity on the seepage characteristics of soil-rock mixtures. The results indicate that when the gap interval remains the same, an increase in particle size continuity inhibits the development of internal pores within the soil-rock mixture, leading to a decreasing trend in the permeability coefficient of the samples. Meanwhile, expanding the gap interval reduces the occurrence of local blockage and particle accumulation within the skeletal pores, resulting in an increase in the permeability coefficient of the samples.

Copyright
© 2025 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 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
Series
Advances in Engineering Research
Publication Date
31 January 2025
ISBN
978-94-6463-650-5
ISSN
2352-5401
DOI
10.2991/978-94-6463-650-5_32How to use a DOI?
Copyright
© 2025 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  - Qiong Wu
AU  - Mengkai Lin
AU  - Wen Sun
AU  - Jing Wu
AU  - Shenqi Yang
AU  - Jiangjiang Zhang
PY  - 2025
DA  - 2025/01/31
TI  - Study on Seepage Characteristics of Soil-rock Mixture Considering the Influence of Gap Grading Conditions
BT  - Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
PB  - Atlantis Press
SP  - 306
EP  - 311
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-650-5_32
DO  - 10.2991/978-94-6463-650-5_32
ID  - Wu2025
ER  -