Three-dimensional stability analysis and groundwater table estimation of a retrogressive shallow soil landslide: A case study of the Zhongzhai landslide in Gansu Province, China

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-08 DOI:10.1007/s10064-025-04160-y

Shiyao Jia, Qiang Xu, Wanlin Chen, Dalei Peng, Pinliang Li, Haoxing Zhao, Haoyu Li, Xiaoling Song, Hailong Chen

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引用次数: 0

Abstract

Earthquakes, extreme rainfall, and other conditions can trigger a considerable number of shallow landslides, posing significant safety hazards. Due to the lack of obvious warning signs before sliding, such landslides are not apparent. Traditional remote sensing images and conventional aerial survey data cannot effectively and accurately reflect deformation-related warning signs of sliding. Thus, investigating the subsurface structural characteristics of slopes has become crucial for studying retrogressive shallow soil landslides. This paper takes the Zhongzhai landslide in Niangniangba town, Qinzhou District, Tianshui city, Gansu Province, China, as the research object. Electrical resistivity profiles of the landslide area were obtained by electrical resistivity tomography (ERT), using in situ light dynamic penetration tests and core drilling to confirm the relationship between resistivity and formation lithology to realize the fusion of multisource data. A three-dimensional model of electrical resistivity was constructed to characterize the stratigraphic structure. Combined with unmanned aerial vehicle (UAV) photogrammetry and on-site investigation to obtain terrain features, a three-dimensional geological model of the Zhongzhai landslide was constructed. The development process and genesis mechanism of landslides at the loess–bedrock interface were explored via numerical simulation. The results demonstrate how the stratigraphic structure and water table influence the development of retrogressive shallow soil landslides. This article can provide a reference for the stability evaluation and prediction of retrogressive shallow soil landslides.

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.