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Stability Analysis of Mine Embankment Against River at Opencast Coal Mine
The present paper discusses the stability analysis of mine embankment and the effect of river river water. Structural stability of the embankment is calculated using the limit equilibrium method and analyse the effect of width on the structural stability of the embankment. Numerical simulations have been performed with the help of finite element based ‘PHASE2’ software, and the Factor of Safety has been calculated by strength reduction technique. The riverbed profile has been determined to simulate the water pressure with depth. Major geological discontinuity has also been included in the model. In the initial analysis, various models have been simulated only for embankment stability with and without water in the river. The Factor of Safety varies from 1.29 to 1.82, which indicates the embankment is stable without water. The effect of seepage due to river water within the embankment has been simulated. The seepage of water leads to a reduction of the Factor of Safety and it varies from 1.20 to 1.60. Complete structure i.e. embankment, fault, benches on the mining side and slope on the river side, have been simulated in the last set of analysis. The embankment slope and width been recommended based on the above study. Based on the analysis, the slope of the embankment on the river side as well as on the mining side should be flattened and it should not be more than 40°. The minimum base width of the embankment should not be less than 30 m.
Stability Analysis of Mine Embankment Against River at Opencast Coal Mine
The present paper discusses the stability analysis of mine embankment and the effect of river river water. Structural stability of the embankment is calculated using the limit equilibrium method and analyse the effect of width on the structural stability of the embankment. Numerical simulations have been performed with the help of finite element based ‘PHASE2’ software, and the Factor of Safety has been calculated by strength reduction technique. The riverbed profile has been determined to simulate the water pressure with depth. Major geological discontinuity has also been included in the model. In the initial analysis, various models have been simulated only for embankment stability with and without water in the river. The Factor of Safety varies from 1.29 to 1.82, which indicates the embankment is stable without water. The effect of seepage due to river water within the embankment has been simulated. The seepage of water leads to a reduction of the Factor of Safety and it varies from 1.20 to 1.60. Complete structure i.e. embankment, fault, benches on the mining side and slope on the river side, have been simulated in the last set of analysis. The embankment slope and width been recommended based on the above study. Based on the analysis, the slope of the embankment on the river side as well as on the mining side should be flattened and it should not be more than 40°. The minimum base width of the embankment should not be less than 30 m.
Stability Analysis of Mine Embankment Against River at Opencast Coal Mine
Lecture Notes in Civil Engineering
Verma, Amit Kumar (editor) / Singh, T. N. (editor) / Mohamad, Edy Tonnizam (editor) / Mishra, A. K. (editor) / Gamage, Ranjith Pathegama (editor) / Bhatawdekar, Ramesh (editor) / Wilkinson, Stephen (editor) / Kumar, R. E. S. C. (author) / Rai, Rajesh (author) / Jasiwal, Ashok (author)
International Conference on Geotechnical Issues in Energy, Infrastructure and Disaster Management ; 2024 ; Patna, India
2024-12-01
12 pages
Article/Chapter (Book)
Electronic Resource
English
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