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Загальна кількість знайдених документів : 2
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Saadoun A. Numerical modeling of slope stability in Chouf Amar limestone quarry (M’sila, Algeria) [Електронний ресурс] / A. Saadoun, A. Hafsaoui, Y. Khadri, M. Fredj // Науковий вісник Національного гірничого університету. - 2018. - № 5. - С. 24-29. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2018_5_5 Purpose. The aim of this paper is numerical modeling of the slope stability of limestone quarry in dry and wet cases. Methodology. The study of slope stability was performed by the limit equilibrium method (LEM) through the SLIDE software, and numerical methods through PLAXIS and FLAC. Findings. In this study, the presence of water in the marl layer has a heavy influence on the safety factor (SF), which allows for instability of the slope. Originality. The originality of this work is based on two different approaches to determine the safety factor in the dry and wet cases through three methods, the limit equilibrium, finite element and finite difference methods (FEM, FDM). Practical value. This study has shown that numerical modeling of the slope stability using three methods, LEM, FDM and FEM can be expected to produce similar results. The different methods indicate that the finite difference method in our case is the most efficient and can be used as a practical check for the other methods.
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Fredj M. Back-analysis study on slope instability in an open pit mine (Algeria) [Електронний ресурс] / M. Fredj, A. Hafsaoui, H. Riheb, R. Boukarm, A. Saadoun // Науковий вісник Національного гірничого університету. - 2020. - № 2. - С. 24-29. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2020_2_6 Purpose. To analyze the sliding from the geotechnical point of view and to identify the plausible causes that influence it. Methodology. To analyze the sliding from the geotechnical point of view and to identify the plausible causes that influence it, our study follows the following chronological order. Firstly, a feedback reconstructs the slip from the geotechnical point of view; a back-analysis is required to confirm the surface failure. Next, a check will be made of the surface failure through the finite difference method and using the shear strength reduction by finite difference method (SSR-FD). A parametric study on the influence of the geometric parameters is performed to see the influence of the latter on the stability. The plausible cause that has directly influenced this sliding is shown. Findings. This paper considers the application of three methods: limit equilibrium method (LEM), finite element method (FEM) and finite difference method (FDM) to perform back analysis and find out the layer of slope failure in an open pit mine. Originality. Three different approaches LEM, FEM and FDM were used to perform the back-analysis the rock mass properties and to investigate the slope failure mechanism and the accuracy of this method in mining engineering field. Practical value. This study has illustrated that non-compliance with the art, open pit mining standards and early planning of the mining method can most often lead to critical situations and catastrophic results. The back analysis of the slip site allowed us to reconstruct the break already observed and to draw maximum lessons on the mode, location and mechanical parameters that triggered this break.
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