The stability of slopes and underground openings against flexural toppling and their stabilisation

Aydan, Ömer; Kawamoto, T.

doi:10.1007/bf01019709

Cited by 177 publications

(71 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unlike the circular slip failure mode, the toppling failure mode was formed due to the slope's geological structure. According to the limiting equilibrium method, the fundamental assumption for the existence of the limiting equilibrium state is that the "base plane" inclines at a specific angle to the normal to the rock layer dip angle (Aydan and Kawamoto, 1992). This linear crack formed in the anti-dip portion of the slope, and it validated the "base plane" assumption well.…”

Section: Simulated Toppling Failurementioning

confidence: 88%

“…The first type is the limit-equilibrium method (Goodman and Bray, 1976;Aydan and Kawamoto, 1992;Amini et al, 2009), which is a simple but robust analytical technique for predicting toppling. The second type is physical modeling, which includes the base friction model (Bray and Goodman, 1981), the tilt table model (Wong and Chiu, 2001) and the centrifuge model (Adhikary et al, 1997;Adhikary and Dyskin, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Under gravity, the interacting rock layers tend to bend toward the excavation side, resulting in different degrees of deflection of the rock layers; this leads to mutual sliding and dislocation, and finally a bending (tensile) stress is induced. Once the bending stress exceeds the tensile strength of the rock layers, fracturing of rock layers will be initiated (Aydan and Kawamoto, 1992;Adhikary et al, 1996;Adhikary and Dyskin, 2007;Amini et al, 2009). Thus, flexural toppling failure is a progressive process that changes from continuous deformation to discontinuous deformation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit

Zhao

Jin-an

Li³

et al. 2015

Engineering Geology

View full text Add to dashboard Cite

Toppling failure of rock slopes is a complicated mode due to a combination of both continuous and discontinuous deformation, especially in dealing with anti-dip rock slopes. In this paper, a novel continuum-based discrete element method (CDEM), which is useful in modeling the entire progressive process from continuous to discontinuous deformation, is proposed to analyze the deformation characteristics, the failure mechanism and the evolution process of a large-scale open pit slope with a typical anti-dip structure. To simulate the slope deformation, the shear strength reduction method (SSR) is adopted to represent the strength degradation of rock mass in the deterioration process. The simulated results are validated using data obtained from a field investigation and continuous monitoring by employing an advanced remote sensing technique called ground-based interferometric synthetic aperture radar (GB-InSAR). To analyze the evolution trend of the anti-dip slope, the subsequent toppling failure mode is predicted using the validated CDEM models. Based on a case study of a slope at the Fushun open pit mine (in Fushun, China), the unique geological structure with various joints and discontinuities, groundwater, intense rainfall, and mining activities are identified as the main triggers for different failure stages. The comparison between the field data and the simulation shows that CDEM accurately depicts the rock deformation and the failure pattern of the studied slope. The proposed numerical modeling techniques can be used for predicting failures of other similar excavated rock slopes. The simulated evolution process and the recorded deformation patterns help engineers to gain a better understanding of rock mass movement of anti-dip slopes, and the presented methodology could be utilized for similar studies and engineering designs.

show abstract

Section: Simulated Toppling Failurementioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit

Zhao

Jin-an

Li³

et al. 2015

Engineering Geology

View full text Add to dashboard Cite

show abstract

“…The equations to reach other geometric parameters including a1, a2, b and yn can be addressed in Appendix A. It is shown that the interface between deformation blocks and the base is stepped, and its overall dip ψb can be valued in the range shown in Equation (1) [8,14,23]. It is shown that the interface between deformation blocks and the base is stepped, and its overall dip ψ b can be valued in the range shown in Equation (1) [8,14,23].…”

Section: Mechanical Model and Analytical Solution To Toppling Slope Fmentioning

confidence: 99%

“…Liu et al (2008Liu et al ( , 2010 [12,13] extended the continuum solution developed by [10,11] and presented an analytical approach for analyzing block toppling of those slopes that can be considered as continua. Considering rock layers as cantilever beams, Aydan and Kawamoto (1992) [14] proposed a limit equilibrium stability analysis method for slopes and underground openings under various loading conditions against the flexural toppling. Adihikary et al (1997) [15] adopted this limit equilibrium approach to analyze a centrifuge test data and found this method can accurately predict the failure load for the tests.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Solution for Block Toppling Failure of Rock Slopes during an Earthquake

Guo

Yang

et al. 2017

Applied Sciences

View full text Add to dashboard Cite

Toppling failure is one of the most common failure types in the field. It always occurs in rock masses containing a group of dominant discontinuities dipping into the slope. Post-earthquake investigation has shown that many toppling rock slope failures have occurred during earthquakes. In this study, an analytical solution is presented on the basis of limit equilibrium analysis. The acceleration of seismic load as well as joint persistence within the block base, were considered in the analysis. The method was then applied into a shake table test of an anti-dip layered slope model. As predicted from the analytical method, blocks topple or slide from slope crest to toe progressively and the factor of safety decreases as the inputting acceleration increases. The results perfectly duplicate the deformation features and stability condition of the physical model under the shake table test. It is shown that the presented method is more universal than the original one and can be adopted to evaluate the stability of the slope with potential toppling failure under seismic loads.

show abstract

The State of Art on Large Cavern Design for Underground Powerhouses and Some Long‐Term Issues

Aydan¹

2016

Alternative Energy and Shale Gas Encyclopedia

View full text Add to dashboard Cite

The stability of slopes and underground openings against flexural toppling and their stabilisation

Cited by 177 publications

References 3 publications

A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit

A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit

An Analytical Solution for Block Toppling Failure of Rock Slopes during an Earthquake

The State of Art on Large Cavern Design for Underground Powerhouses and Some Long‐Term Issues

Contact Info

Product

Resources

About