Comparative analyses of finite element and limit-equilibrium methods for heavily fractured rock slopes

Koca, Tümay Kadakci; Koca, Mehmet Yalçın

doi:10.1007/s12040-019-1314-3

Cited by 18 publications

(2 citation statements)

References 37 publications

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“…Currently, the residual thrust method is typically used in slope stability analysis [27][28][29][30][31] . By introducing the above-mentioned 2D equivalent shear strength parameters into the residual thrust method, a 3D stability calculation method of intermediate bridge supporting slope can be established [32,33] .…”

Section: Stability Calculation Methods Of Intermediate Bridge Support...mentioning

confidence: 99%

Three-dimensional stability calculation method and application of intermediate bridge supporting consequent bedding slope in open-pit mine

Wang,

Liang,

et al. 2024

Preprint

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Solving the dynamic synergistic design challenge of slope and intermediate bridge during parallel stripping of multi-pits is crucial to realizing both safe production and economic benefits of mines. Based on the analysis of the failure mode of the intermediate bridge supporting consequent bedding slope, constructed a 3D mechanical model of the intermediate bridge, and analyzed the 3D supporting effect quantitatively. Combined with Mohr-Coulomb shear strength theory, a 2D equivalent method considering the 3D supporting effect of intermediate bridge under different failure modes is proposed, and a 3D stability calculation method of slope under this effect is established. In addition, the main influencing factors of the intermediate bridge supporting effect are analyzed. The 3D stability coefficient regression model is constructed by using the response surface method, and the validity of the model for solving practical engineering problems is verified by engineering application. The results show that when considering the combined sliding failure mode, the design bottom width d should be given priority in the establishment of supporting structures such as dump bridges, for the intermediate bridge demolition design project, the design bridge length should be given priority b. The interaction between the bottom width d and the bridge height h has a significant effect on the 3D stability of the slope; For the shear dilatancy failure mode, the supporting and demolition engineering should give priority to the design of bridge height h and bottom width d respectively. The interaction between bridge height h and bridge length b has the most significant effect on the 3D stability of the slope. The error rate between the 3D stability calculation results and the predicted value of the regression model is 1.9–3.3%, and the regression model can fully meet the actual needs of the project. This study lays a theoretical and application foundation for the dynamic collaborative design, stability control and engineering implementation of slope and intermediate bridge in multi-pit parallel stripping open-pit coal mine.

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Section: Stability Calculation Methods Of Intermediate Bridge Support...mentioning

confidence: 99%

Three-dimensional stability calculation method and application of intermediate bridge supporting consequent bedding slope in open-pit mine

Wang,

Liang,

et al. 2024

Preprint

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“…1), cutting the main and secondary mass movements to obtain a factor of safety value (SrF). an elastic-perfectly plastic behaviour can be readily used for faulted, densely fractured, and disturbed rock mass that reaches its residual strength values [38]. For this reason, elastic-perfectly plastic material behaviour for moderately to extremely weathered and disturbed gneiss units was used by considering the Generalized Hoek-Brown criterion [37].…”

Section: Rock Mass Behaviour and Fe Modelmentioning

confidence: 99%

Archives of Mining Sciences

Koca

2022

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A ConCeptuAl SeCtor-SCAle numeriCAl modeling of A lAndSlidein An open pit mine in this study, an old rotational landslide that has reactivated in the NW sector of an open-pit mine operated within the gneiss rock unit was evaluated for geological and hydrogeological properties. The pit slopes were susceptible to mass movement when there were variations in water inflows. considering this fact, a conceptual numerical model concerning geostructural features, rainfall infiltration, and varying hydrological conditions was constructed. initially, finite element (FE) groundwater seepage analyses were performed to evaluate the effect of water flow on stability in the dry and rainy seasons. The rainy season was simulated by vertical infiltration. Since the dewatering measures are of importance in open pit slope instability mitigation, pumping wells were designed to control water flow through the disturbed zone to improve the stability of the sector that can be triggered again with changing environmental conditions. The performance and organization of the pumping wells were also simulated in the FE model. This FE model was part of a dewatering plan. From this, the effect of the pumping rate from the wells on the stability of the sector was revealed. it was also found that there should be an increase in the pumping rate in the rainy season.

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Correlating Circular Failure Charts, Limit Equilibrium and Finite Element Method Based Safety Factor for Circular Failure Type Landslides

Varshney,

Siddique,

Ahamad

et al. 2024

Advances in Natural and Technological Hazards Research

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Comparative analyses of finite element and limit-equilibrium methods for heavily fractured rock slopes

Cited by 18 publications

References 37 publications

Three-dimensional stability calculation method and application of intermediate bridge supporting consequent bedding slope in open-pit mine

Three-dimensional stability calculation method and application of intermediate bridge supporting consequent bedding slope in open-pit mine

Archives of Mining Sciences

Correlating Circular Failure Charts, Limit Equilibrium and Finite Element Method Based Safety Factor for Circular Failure Type Landslides

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