Experimental study on the deformation and failure of a cut slope under rainfall

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Earth Sciences Pub Date : 2025-05-07 DOI:10.1007/s12665-025-12102-w

Jianjun Gan, Qirui Lu, Chanɡbinɡ Zhou, Fangzhou Liu, Jinglong Wang, Jiacheng Yu, Hui Jiang, Chenghui Wan

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引用次数: 0

Abstract

On June 11, 2016, a landslide occurred in Miaoling village, Jiujiang city, Jiangxi Province, China, following continuous rainfall. An engineering geological profile indicated that the landslide consisted of a stiff crust of residual Quaternary deposits overlying a water-sensitive gravelly clay layer with a soft-plastic consistency. A geotechnical field investigation and physical models of rainfall-induced landslides were carried out in situ and in the laboratory and included the use of a new sensors to develop a geotechnical model of the cut slope. During the rainfall process in the physical simulation experiments, automatic rainfall, three-dimensional scanning, and multiparameter monitoring were conducted to analyze the resulting landslides. The results showed that the increase in moisture and the generation of pore water pressure led to changes in soil pressure and the development of plastic deformation. An analysis performed after rainfall using a strain-softening behavior model showed the initiation and propagation of plastic zones, as well as the development of landslide cracks close to the observed ones. Therefore, it was proposed that the Miaoling–Jiujiang landslide could be explained by a progressive failure mechanism.

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降雨作用下堑坡变形破坏试验研究

2016年6月11日，在持续降雨后，中国江西省九江市妙岭村发生山体滑坡。工程地质剖面表明，该滑坡是由第四纪残余沉积的坚硬外壳覆盖在具有软塑性稠度的水敏砂质粘土层上。在现场和实验室进行了岩土实地调查和降雨引起的滑坡的物理模型，其中包括使用新的传感器来开发切割边坡的岩土模型。在物理模拟实验的降雨过程中，采用了自动降雨、三维扫描、多参数监测等方法对所产生的滑坡进行分析。结果表明：水分的增加和孔隙水压力的产生导致土压力的变化和塑性变形的发展；降雨后利用应变软化行为模型进行的分析显示，塑性区开始和扩展，以及接近观测到的滑坡裂缝的发展。因此，提出妙岭-九江滑坡可以用递进破坏机制来解释。

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来源期刊

Environmental Earth Sciences 环境科学-地球科学综合

CiteScore

5.10

自引率

3.60%

发文量

494

审稿时长

8.3 months

期刊介绍： Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.