The Influence of Soil Cave Diameter and the Thickness of the Overlying Clay Stratum on Ground Collapse in Karst Areas of Guangzhou

Weiqiang Liu; Jiayi Tian; Chunxi Ruan; Antai Yong; Yizhao Wang; Yan Gao

doi:10.2991/978-94-6463-780-9_25

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The Influence of Soil Cave Diameter and the Thickness of the Overlying Clay Stratum on Ground Collapse in Karst Areas of Guangzhou

Authors

Weiqiang Liu¹, Jiayi Tian², Chunxi Ruan¹, Antai Yong³, Yizhao Wang⁴, Yan Gao²^{, *}

¹Guangzhou Road Affairs Center, Guangzhou, 510630, China

²School of Earth Sciences and Engineering, Sun Yat-Sen University, Zhuhai, 510082, China

³Guangzhou Transportation Bureau, Guangzhou, 510630, China

⁴Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou, 510010, China

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

Corresponding Author

Yan Gao

Available Online 3 July 2025.

DOI: 10.2991/978-94-6463-780-9_25 How to use a DOI?
Keywords: Karst; collapse of overlying clay stratum; collapse characteristics
Abstract: Utilizing field-measured engineering geological data, this study developed a finite element numerical model to simulate overlying clay stratum collapse in Guangzhou’s karst terrain. The Euler-Lagrange coupling (CEL) technique was employed to dynamically replicate the evolutionary process of ground collapse. Following the orthogonal experimental design methodology, multiple numerical simulations were performed to quantify the sensitivity of key parameters to collapse magnitude and progression rate. By analyzing the propagation patterns of plastic zones and spatiotemporal variations in plastic strain, distinct evolutionary modes of overlying clay stratum collapse in karst regions were systematically categorized. Under low-intensity external disturbances, insufficient thickness of soil cave roofs triggers collapse, resulting in pronounced ground subsidence or sinkhole formation. Enlarged cave diameters amplify both the magnitude and velocity of collapse, whereas greater overlying clay stratum thickness suppresses these trends.
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 2025 International Conference on Engineering Management and Safety Engineering (EMSE 2025)
Series: Advances in Engineering Research
Publication Date: 3 July 2025
ISBN: 978-94-6463-780-9
ISSN: 2352-5401
DOI: 10.2991/978-94-6463-780-9_25 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  - Weiqiang Liu
AU  - Jiayi Tian
AU  - Chunxi Ruan
AU  - Antai Yong
AU  - Yizhao Wang
AU  - Yan Gao
PY  - 2025
DA  - 2025/07/03
TI  - The Influence of Soil Cave Diameter and the Thickness of the Overlying Clay Stratum on Ground Collapse in Karst Areas of Guangzhou
BT  - Proceedings of the 2025 International Conference on Engineering Management and Safety Engineering (EMSE 2025)
PB  - Atlantis Press
SP  - 255
EP  - 262
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-780-9_25
DO  - 10.2991/978-94-6463-780-9_25
ID  - Liu2025
ER  -

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