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ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Geohazards and Georisks
Volume 13 - 2025 |
doi: 10.3389/feart.2025.1523076
This article is part of the Research Topic Prevention, Mitigation, and Relief of Compound and Chained Natural Hazards Volume II View all 13 articles
Experimental study of geotextiles for karst subgrade collapse under static and dynamic loads
Provisionally accepted- 1 School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China, Guilin, China
- 2 Guangxi Institute of Geological Survey, Nanning, Guangxi, 530023, China, Nanning, China
- 3 Guangxi Zhuang Autonomous Region Natural Resources Ecological Restoration Center, Nanning, Guangxi, 530028, China, Nanning, China
- 4 School of Civil Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P.R. China, Zigong, China
Karst subgrade collapse has the characteristics of suddenness and concealment, which poses a major challenge to the stability of infrastructure. A scale model test was designed to investigate the effects of different reinforcing conditions and different loading modes on the load transfer and distribute of reinforced cushions, with emphasis on monitoring the vertical pressure, internal fill and surface displacements in the subsided area and the stable area during the collapse process. The results show that during subsidence, vertical stresses decrease in the subsidence area and increase in the stable area. The load affects the soil arch effect, with dynamic loads having a greater impact on soil stability compared to static load and unloaded conditions. Geotextile reinforcement enhances the soil arch and tensile membrane effects, reducing vertical displacement by 5.58%-10.95% under dynamic loads and by 34.76%-66.56% under static load and unloaded. This research provides theoretical and experimental support for geotextile reinforcement design in karst subsidence, helping to prevent karst collapse.
Keywords: karst subgrade collapse1, geotextiles2, mode tests3, static and dynamic loading4, earth pressure5
Received: 05 Nov 2024; Accepted: 27 Jan 2025.
Copyright: © 2025 Wu, Yi, Chen, Wu, Yang, Wu and Amin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Di Wu, School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China, Guilin, China
Qingshu Chen, Guangxi Institute of Geological Survey, Nanning, Guangxi, 530023, China, Nanning, China
Jing Wu, Guangxi Zhuang Autonomous Region Natural Resources Ecological Restoration Center, Nanning, Guangxi, 530028, China, Nanning, China
Yanxin Yang, School of Civil Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P.R. China, Zigong, China
Jianjian Wu, School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China, Guilin, China
Ruhul Amin, School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China, Guilin, China
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