Affiliation:
1. School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
2. School of Civil Engineering, Shaoxing University, Shaoxing 312000, China
3. Chongqing College of Mobile Communication, Chongqing 401520, China
4. China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Abstract
This study investigated the crack propagation law of expansive soil slopes under drying–wetting conditions and the influence of cracks on slopes by conducting a large-scale indoor slope test subjected to drying–wetting cycles. The change in soil moisture content at different depths during the drying–wetting cycles was monitored using a moisture content sensor, and the variation in crack depths in the expansive soil during the drying process was measured using a crack depth detector. The cracks on the slope’s surface were processed using a self-made binarization program, and the crack evolution mechanism of the expansive soil during the drying process was analyzed. The rainfall-induced change in moisture content in the fractured soil was used to obtain the influence of moisture content change on expansive soils, and to analyze the dry–wet cycle failure mode of surface soil. The surface cracks of the soil were quantified by binary processing, and the area of the cracks and the area ratio of cracked soil to intact soil were calculated. Finally, by using PFC simulation software with the slope cracks and quantitative analysis results as parameters, it was confirmed that the greater the number of drying–wetting cycles, the greater the number of cracks, and the greater the damage to the slope.
Funder
National Key R&D Program of China
National Natural Science Foundation of China
China Occupational Safety and Health Association
Natural Science Foundation project of Chongqing Science and Technology Commission
Chongqing Special Postdoctoral Science Foundation
Post-Funded Projects of Chongqing University of Science and Technology
Self-made Equipment Foundation of Chongqing University of Science and Technology
Scientific and Technological Research Program of the Chongqing Municipal Education Commission
“Youth Innovation Talent Introduction and Education Plan” of Shandong Colleges and Universities
Guizhou Province Science and Technology Planning Project
National Natural Science Foundation of Shandong Province of China
The State Key Laboratory of Coal Resources and Safe Mining CUMT
Open Fund of National Engineering and Technology Research Center for Development and Utilization of Phosphate Resources of China
the Open Fund of Key Laboratory of Geological Hazards on Three Gorges Reservoir Area
Ministry of Education
2022 Chongqing Municipal Education Commission Science and Technology Research Plan Project Contract
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction
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