Seismic stability analysis of bidirectional jointed rock slope

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-04 DOI:10.1007/s10064-025-04188-0

Haiying Fu, Yanyan Zhao, Mingzhe Zhou, Qilin Li

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Abstract

The southwestern region of country is characterized by its complex topography and high average elevation, with numerous jointed rock slopes. Additionally, the intricate terrain of high-altitude areas frequently results in seismic activity. This paper is based on the #1 tunnel slope project in the region, employing both shake table experiments and numerical simulations to analyze the failure modes of the jointed rock slope under seismic conditions and the stability of the jointed rock slope under different parameters. The integrated evaluation method was used in this paper to evaluate the dynamic stability of the slope, which considered both the seismic permanent displacement method and the Dynamic Strength Reduction Method. The specific conclusions are as follows: (1) The failure process of the jointed rock slopes was categorized into three distinct stages: local shear slip, slip surface formation and complete failure. The failure mode was summarized as shear slip failure occurring along the joint surfaces, accompanied by the collapse of locally fragmented rock masses. (2) the slope angle emerged as a significant factor influencing the failure mode of jointed rock slopes. Larger slope angles, greater joint dip angles and smaller joint spacings correlated with increased failure severity and diminished stability. (3) the maximum permanent displacement is positively correlated with both the slope angle and joint dip angle.

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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.