Stability analysis of an ancient landslide considering shear strength reduction behavior of slip zone soil

Chen, Xiaoping; Zhu, Hong‐Hu; Huang, Jing-wu; Liu, Dong

doi:10.1007/s10346-015-0629-7

Cited by 31 publications

(9 citation statements)

References 19 publications

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“…In China, applying a surcharge to the toe of the landslide had previously successfully prevented similarly reactivated fossil landslides induced by manmade excavation (Popescu 2001;Li et al 2006;Picarelli 2011;Chen et al 2015). Here this method was applied to decrease the sliding rate of the DRL to guarantee the transportation of the heavy electrical equipment and the electric power delivery work as scheduled.…”

Section: Emergency Mitigation Construction Of the Drlmentioning

confidence: 99%

Stability evaluation and prediction of the Dongla reactivated ancient landslide as well as emergency mitigation for the Dongla Bridge

Luo

Bowman

et al. 2017

Landslides

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eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Following complete failure of the DRL, the probability of landslide-dam and dam breach is proved to be small by Risk Analyses. This paper can provide an insight into the problems associated with the interaction between the human structures and landslide instabilities.

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Section: Emergency Mitigation Construction Of the Drlmentioning

confidence: 99%

Stability evaluation and prediction of the Dongla reactivated ancient landslide as well as emergency mitigation for the Dongla Bridge

Luo

Bowman

et al. 2017

Landslides

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“…However, limited writers have drawn on systematic research into the deformation pattern of landslides subjected to reservoir water level fluctuations using centrifugal model tests [32]. In a previous study, the reduction in the shear strength of the slip zone soil plays an important role in the failure process, and hydrodynamic pressure produced by rapid drawdown can reduce the slope stability further [33,34]. The landslides in the Wudongde Reservoir area are also mainly affected by the rapid drainage of the reservoir and exhibit the characteristics of retrogressive failure [35].…”

Section: Introductionmentioning

confidence: 99%

Centrifuge Modeling and the Analysis of Ancient Landslides Subjected to Reservoir Water Level Fluctuation

Tang

et al. 2020

Sustainability

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Landslides are among the most severe natural hazards with significant impacts in human life and infrastructure. The Three Gorges Reservoir Area (TGRA) is vulnerable to landslides because of the geological environment and human activities. A centrifuge model test of a landslide with a planar sliding surface in the TGRA was conducted. Based on the multiple monitoring systems composed of a 3D laser scanner, pore water pressure transducers, particle image velocimetry and earth pressure sensors, multiphysical data were obtained. The work described here had the objective of researching the long-term deformation pattern of this kind of landslide that was subjected to periodic fluctuations in the reservoir water level. The results indicated that the failure processes were characterized by progressive retrogression and cracks caused by the reservoir drawdown. Transverse tensile cracks first appeared in the submerged zone of the slope. The front part of the slope was dominated by horizontal displacement, while the consolidation and compaction deformation in the vertical direction dominated at the mid-rear part of the slope. When the water level dropped again, the front part slid down and fell into the river, but the mid-rear part had no obvious deformation and exhibited a phenomenon of self-stabilization. Moreover, the phreatic line is a concave shape directed into the slope during reservoir filling and converts to a convex shape pointing out of the slope during reservoir drawdown. The earth pressures in the slope vary with the failure process of the landslide. Good agreement is obtained for the deformation characteristics between the experimental results and those of prototype landslides.

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“…Slope management techniques have evolved over the years, and involves continuous monitoring to mitigate any eventuality that may result from slope instability. The stability analysis of natural and engineered slopes is a problem that is further complicated when there exists a slip zone whose shear strength behavior has to be taken into account [1]. An in-depth knowledge of the stability condition of a slope is crucial for guaranteeing the safety of the humans as well property that are in close proximity to high slope faces [2].…”

Section: Introductionmentioning

confidence: 99%

“…Extensive research has gone into the analysis of the stability conditions of slopes with a number of quantitative studies being done for estimating the slope safety factor over the past few decades [1].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Slope Stability by Strength Reduction in Finite Elements Using ANSYS a Case Study of Qinglong-Xingyi Expressway Contract Section T1(K11+790~K11+875)

Onyango¹,

Zhang²

2019

EESRJ

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This research aims at examining the stability condition of the slope on which Qinglong-Xingyi Expressway Contract Section T1(K11+790~K11+875) is built as well as put forward a suitable stabilization method. A 2D simulation model of the slope was developed for analysis using the Finite Element Software ANSYS. The main slip section (K11+850) was considered for developing the 2D model of the slope for simulation. The simulation results revealed a deep-seated failure surface in slip zone. The safety factor of the slope after the landslide was found to be 1.085, just around equilibrium. This meant that the slope was highly susceptible to failure in case of any trigger mechanisms hence reinforcement was inevitable in order to keep any eventuality at bay. Piles embedded in the bedrock were the best reinforcement method to contain the deep-seated failure surface developing in the sliding layer. Assurance of slope stability after reinforcement with piles is evident in the disappearance of the failure surface in the plastic strain plot, significant reduction in displacement, plastic strain and stress values. The findings of this research serve to strengthen numerical analysis by strength reduction as a tool for decision making in taking care of slope stability issues.

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Stability analysis of an ancient landslide considering shear strength reduction behavior of slip zone soil

Cited by 31 publications

References 19 publications

Stability evaluation and prediction of the Dongla reactivated ancient landslide as well as emergency mitigation for the Dongla Bridge

Stability evaluation and prediction of the Dongla reactivated ancient landslide as well as emergency mitigation for the Dongla Bridge

Centrifuge Modeling and the Analysis of Ancient Landslides Subjected to Reservoir Water Level Fluctuation

Numerical Analysis of Slope Stability by Strength Reduction in Finite Elements Using ANSYS a Case Study of Qinglong-Xingyi Expressway Contract Section T1(K11+790~K11+875)

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