Destruction Mechanism of Clay-Covered Karst Collapse

Jiayi Tian; Yan Gao

doi:10.2991/978-94-6463-429-7_4

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Destruction Mechanism of Clay-Covered Karst Collapse

Authors

Jiayi Tian¹, Yan Gao¹^{, 2}^{, *}

¹School of Earth Sciences and Engineering, Sun Yat-sen University, Zhuhai, Guangdong, China

²Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, China

^*Corresponding author. Email: gaoyan25@mail.sysu.edu.cn

Corresponding Author

Yan Gao

Available Online 7 June 2024.

DOI: 10.2991/978-94-6463-429-7_4 How to use a DOI?
Keywords: Karst collapse; Cohesive soil stratum; Destruction mechanism
Abstract: Based on actual engineering geological data in Guangzhou, this study establishes a finite element numerical model for the clay-covered karst collapse. The coupled Euler-Lagrange method (CEL) is adopted to simulate the process of the clay-covered karst collapse. Multiple sets of numerical simulations are conducted using the orthogonal experimental method. By comparing the numerical simulation results of different cavity spans and friction angles of cohesive soil, the development mode of the clay-covered karst collapse is studied. The mechanism of the clay-covered karst collapse is explained, i.e., after the failure of the soil arch, if the span of the soil arch is too large and causes excessive weight of the overlying soil, the new soil arch cannot withstand the gravitational load of the upper soil, leading to further development into complete collapse; if the cavity span is small, it is more likely for soil to form a stable new soil arch and prevent complete collapse.
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 7th International Conference on Structural Engineering and Industrial Architecture (ICSEIA 2024)
Series: Atlantis Highlights in Engineering
Publication Date: 7 June 2024
ISBN: 10.2991/978-94-6463-429-7_4
ISSN: 2589-4943
DOI: 10.2991/978-94-6463-429-7_4 How to use a DOI?
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

ris enw bib

TY  - CONF
AU  - Jiayi Tian
AU  - Yan Gao
PY  - 2024
DA  - 2024/06/07
TI  - Destruction Mechanism of Clay-Covered Karst Collapse
BT  - Proceedings of the 2024 7th International Conference on Structural Engineering and Industrial Architecture (ICSEIA 2024)
PB  - Atlantis Press
SP  - 23
EP  - 30
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-429-7_4
DO  - 10.2991/978-94-6463-429-7_4
ID  - Tian2024
ER  -

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