Precise evaluation method for the stability analysis of multi-scale slopes

Yin, Xiangjie; Lin, Hang; Chen, Yifan; Wang, Yixian; Zhao, Yanlin

doi:10.1177/0037549720943274

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…Numerical simulation method is widely applied in geotechnical engineering , Yin et al 2020). The self-customized fish program, which reduces the strength parameters of the slope in turn according to a specific ratio in FLAC 3D , was used to simulate the progressive failure of slope caused by the attenuation of strength.…”

Section: Energy Evolution and Failure Mechanismmentioning

confidence: 99%

Stability Analysis of Slope Considering the Energy Evolution of Locked Segment

et al. 2021

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Researches on the energy evolution of the key blocks is helpful to reveal the failure process of locked-segment type slope, whose stability is governed by the locking section along the potential slip surface. In order to study the failure mechanism of the locked segment in the process of slope progressive failure due to strength attenuation, a series of stability analysis on the numerical models of lockedsegment type slope were implemented to record the relationship curve between energy and strength reduction coefficient. Then, according to the variation law and characteristic of energy evolution, the failure process of the locked segment was divided into four stages: elastic stage, initial damage stage, extensive damage stage and failure stage. And the reduction coefficient corresponding to the peak of the energy evolution curve was employed to achieve landslide warning. In addition, the method to determine the safety factor of locked-segment type slope was given, and its reliability was verified by comparing with other traditional methods. Finally, the formula for calculating the initial sliding velocity was presented based on the residual strain energy which is defined as the elastic strain energy of the locked segment when the slope is unstable.

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Section: Energy Evolution and Failure Mechanismmentioning

confidence: 99%

Stability Analysis of Slope Considering the Energy Evolution of Locked Segment

et al. 2021

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“…Irrespectively of what method is proposed, the purpose is to determine the slope stability accurately (Johari et al, 2013;Tang et al, 2016). Yin et al (2020) have proposed a precise evaluation method for the stability analysis of multi-scale slopes by establishing numerical models of slopes with various scales as well as different grid shapes and sizes to conduct stability analysis.…”

Section: Introductionmentioning

confidence: 99%

Multi-level and Precise Evaluation of Slope Stability in Large Open-pit Mines: a Case Study at Dexing Copper Mine, China

Shi-gui

Saroglou

Chen

et al. 2021

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As the mining industry developed significantly in the last decades and the depth of open-pit mining has increased, the stability of large open-pit slopes has become a major problem directly related to the safety production and development of a mine. However, the overall slope is indeed safer than the local slope based on the existing stability estimation methods. So the existing methods of directly analyzing the stability of the overall slope will produce some errors in the calculation results of the safety factor, and cannot comprehensively reflect the stability of the mine slope. Based on these problems, this paper adopted the idea of gradual analysis and the precise determination of discontinuity properties to perform a limit equilibrium analysis for the evaluation of mine slope stability. A case study slope, referred to as Yangtaowu Slope in Dexing Copper Mine, was selected for the demonstration of the accuracy of this approach. The results indicate that the adopted method can accurately reflect the actual stability of the slope, especially when the mine slope is near the critical state of stability.

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