Analysis of blocky rock slopes with finite element Shear Strength Reduction analysis

Hammah, R.E.; Yacoub, Thamer; Corkum, B.; Wibowo, Ferry Wahyu; Curran, J.H.

doi:10.1201/noe0415444019-c40

Cited by 82 publications

(56 citation statements)

References 4 publications

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“…The factor is termed as Strength Reduction Factor (SRF). An SRF is said to be critical when the finite element model does not converge to a solution or in a simple term, the system becomes unstable (Hammah et al, , 2007.…”

Section: B Finite Element Methodsmentioning

confidence: 99%

Back Analysis of Failed Slopes - A Case Study

Mandal¹,

Narwal²,

Gupte³

2017

IJERT

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Slope failure has become a common phenomenon around the world, often taking a heavy toll on human lives. Both, natural and man-made slopes created, are susceptible to failure unless sufficient stability is not imparted. Knowledge of all the factors causing failure is an important aspect to understand the mechanical behavior of slope material. The shear strength parameters, cohesion, and angle of internal friction of failed material, determined from laboratory and in-situ tests may be misleading. Back analysis is a much reliable and consistent method to estimate the mobilized parameters in-situ. This paper explores the application of traditional limit equilibrium method (LEM) and Finite Element Method (FEM) to perform back analysis and find out the probability of failure of slopes. It performs probabilistic analysis on a case of failed slope using both the methods. This paper shall discuss certain indispensable drawbacks of limit equilibrium method and how Finite Element method can help to overcome those limitations.

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Section: B Finite Element Methodsmentioning

confidence: 99%

Back Analysis of Failed Slopes - A Case Study

Mandal¹,

Narwal²,

Gupte³

2017

IJERT

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“…A Strength Reduction Factor (SRF) lower than 1 means that the slope is not stable. The application of this method has been discussed by several authors including Hammah et al, (2005), Diederichs et al, (2007) and Hammah et al, (2007). The resulting parameters (Table 1) were subsequently used to perform the simulations on the most representative section (section 3).…”

Section: Model Geometry and Parametersmentioning

confidence: 99%

An investigation into the development of toppling at the edge of fractured rock plateaux using a numerical modelling approach

et al. 2017

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The version presented here may differ from the published version. If citing, you are advised to consult the published version for pagination, volume/issue and date of publication An investigation on the development of toppling phenomena at the edge of fractured rock plateaux using a numerical modelling approach Margherita Cecilia Spreafico (a) , Federico Cervi (a) , Mirko Francioni (b) , Doug Stead (c) , Lisa Borgatti (a) a.

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“…Ensuring the stability of rock slopes requires analyzing the structural fabric of the site to determine if the mechanical parameters of the discontinuities could result in instability of the slope under consideration. Traditionally, analytical calculations of potential instability are carried out by means of limit equilibrium models; more recently, however, numerical models are dominantly in use [4][5][6][7]. Discontinuous numerical methods such as the discrete element method (DEM) has been successfully applied to slope stability analysis and are now in routine use in civil and mining engineering, particularly in the area of disaster prevention [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Rock slope stability evaluation in static and seismic conditions for left bank of Jinsha River Bridge along Lijiang-Xamgyi’nyilha railway, China

Zhao

Ali

et al. 2012

J. Mod. Transport.

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Jinsha River Bridge is located along the Lijiang-Xamgyi'nyilha railway on the southeastern Tibet plateau; it is an area with a high prevalence of earthquakes. The bridge abutments were designed to be constructed in river bank slopes, where rocks are controlled by two sets of joint planes that significantly influence the stability of the left bank slope. According to the engineering-geological conditions and the characteristics of discontinuities, strength properties of the rock mass were obtained based on Barton model and direct shear test. Numerical analyses were performed using FLAC 3D software to examine the slope's response to seismic loading. Then in order to evaluate the damage trends of the rock mass under the different loading conditions, a calculation model based on the geological parameters and slope stability was simulated and analyzed using the discrete element numerical simulation program UDEC (Universal Distinct Element Code), and the effect of degradation of discontinuities on the slope stability was investigated. The results show that the destruction of rock mass under the gravity, bridge foundation, and seismic load are mainly concentrated within 30 m depth of slope, and the slope under loading may slide along joint planes. In addition, the dynamic analysis by amplification of the input loading indicates that instability occurs to the bank slope at a height of about 200 m, and rock blocks will fail under seismic load. Therefore, to prevent the slope from deformation under the engineering loading and strong earthquakes, the bridge foundation should be strengthened.

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Analysis of blocky rock slopes with finite element Shear Strength Reduction analysis

Cited by 82 publications

References 4 publications

Back Analysis of Failed Slopes - A Case Study

Back Analysis of Failed Slopes - A Case Study

An investigation into the development of toppling at the edge of fractured rock plateaux using a numerical modelling approach

Rock slope stability evaluation in static and seismic conditions for left bank of Jinsha River Bridge along Lijiang-Xamgyi’nyilha railway, China

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