Novel strength reduction numerical method to analyse the stability of a fractured rock slope from mesoscale failure

Gao, Wei; Chen, Xin; Wang, Xu; Hu, Chengjie

doi:10.1007/s00366-020-00984-2

Cited by 12 publications

(2 citation statements)

References 31 publications

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“…e typical section, which is consistent with the main sliding direction of the Xiashan landslide, is selected as an example and analyzed using the finite element strength reduction method. is method does not need to assume the shape and position of the sliding surface, and the unstable sliding surface and corresponding stability safety factor of the slope can be automatically obtained by the program [23][24][25][26][27].…”

Section: Numerical Model and Related Parametersmentioning

confidence: 99%

A Typical Basalt Platform Landslide: Mechanism and Stability Prediction of Xiashan Landslide

Huang

Sun

Bao

et al. 2021

Advances in Civil Engineering

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The Xiashan landslide, which is classified as a typical basalt platform landslide, is the most massive landslide in Zhejiang Province, China. Once sliding occurs, it will pose a severe threat to the life and property of downstream residents and the nearby section of Hangzhou-Taizhou Expressway. On the basis of the geological conditions, present situation, and latest monitoring data of the landslide, this study finds that rainfall is the main influencing factor, and the creep mode is the main prediction mode of its subsequent deformation. The rainfall statistics of the landslide area in the past 30 years show that the rainfall and rainfall frequency in the landslide area display an increasing trend. The probability of heavy rain with rainfall intensity of 100–250 mm/day in the landslide area is very high. On this basis, combined with the numerical analysis method, a finite element model of the slope considering rainfall and groundwater conditions is constructed to analyze the causes and failure mechanism of this landslide comprehensively. Results indicate that the maximum tensile stress at the top of the trailing edge under the natural state is 5.10 MPa, which is very close to the saturated tensile strength of rock mass. Thus, tensile cracks are easily generated and developed, thereby causing the failure mode to be the hydraulic driving type. Also, with the increase in rainfall intensity, the slope plastic strain increases and the slope plastic zone develops and extends until it is completely penetrated. When the rainfall intensity is more than 200 mm/day, the slope safety factor is close to unity, and the slope approaches a failure condition. Therefore, the landslide should be controlled through water treatment and integrated with engineering measures.

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Section: Numerical Model and Related Parametersmentioning

confidence: 99%

A Typical Basalt Platform Landslide: Mechanism and Stability Prediction of Xiashan Landslide

Huang

Sun

Bao

et al. 2021

Advances in Civil Engineering

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“…A stability analysis approach for fractured rock mass slopes was proposed by combining the SRM with undirected graph theory 20 . Using the extended FEM as a tool and based on the new definition, a new strength reduction numerical method to analyze the stability of a fractured rock slope was proposed 21 . For conventional strength reduction techniques that cannot be directly applied to geotechnical stability analyses involving nonlinear failure criteria, a generalized strength reduction concept was proposed to solve the geotechnical problems involving nonlinear failure models 22 .…”

mentioning

confidence: 99%

Slope monitoring optimization considering three-dimensional deformation and failure characteristics using the strength reduction method: A case study

Wang

Jiang

et al. 2023

Sci Rep

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The potential deformation and failure of a slope with typical 3D shapes involve 3D characteristics, such that these factors cannot be simulated using 2D methods. If 3D characteristics are not considered in expressway slope monitoring, an excessive number of monitoring points may be arranged in the stable/safe part, whereas insufficient monitoring points may be arranged in the unstable/dangerous part. In this study, the 3D deformation and failure characteristics of the Lijiazhai slope of the Shicheng–Ji'an Expressway in Jiangxi Province, China were analyzed by 3D numerical simulations using the strength reduction method. The potential 3D slope surface displacement trends, initial position of failure, and maximum depth of potential slip surface were simulated and discussed. The deformation of Slope A was generally small. The slope ranging from the third platform to the slope top was located in Region I, where the deformation was approximately equal to zero. The deformation of Slope B was located in Region V, where the displacement generally was larger than 2 cm in the range from the first–third platforms to the slope top, and the deformation of the trailing edge exceeded 5 cm. The surface displacement monitoring points should be arranged in Region V. Monitoring was then optimized considering the 3D characteristics of the deformation and failure of a slope. Accordingly, surface and deep displacement monitoring networks were effectively arranged in the unstable/dangerous part of the slope. Results may be used as references for similar projects.

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Multi-adaptive coupling of finite element meshes with peridynamic grids: robust implementation and potential applications

Mossaiby

Sheikhbahaei

Shojaei

2022

Engineering with Computers

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Novel strength reduction numerical method to analyse the stability of a fractured rock slope from mesoscale failure

Cited by 12 publications

References 31 publications

A Typical Basalt Platform Landslide: Mechanism and Stability Prediction of Xiashan Landslide

A Typical Basalt Platform Landslide: Mechanism and Stability Prediction of Xiashan Landslide

Slope monitoring optimization considering three-dimensional deformation and failure characteristics using the strength reduction method: A case study

Multi-adaptive coupling of finite element meshes with peridynamic grids: robust implementation and potential applications

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