PROBABILISTIC SLOPE STABILITY ASSESSMENT FOR SUSTAINABLE MINING AT ANKPA COAL MINE, NIGERIA
- Authors
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Idris, M.A
Federal University of Technology, Akure, Ondo State, Nigeria
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Kolade, A.S
Federal University of Technology, Akure, Ondo State, Nigeria
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- Keywords:
- Probabilistic analysis, slope stability, Point estimate method, Finite element method, Reliability index, Factor of safety
- Abstract
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The Ankpa Coal Mine plays a crucial role in meeting the energy demands of Dangote cement plants in Nigeria. However, mining activities at the site pose significant risks to slope stability, potentially impacting the sustainability and safety of mining operations. To ensure responsible and sustainable mining practices, this study conducted a probabilistic slope stability assessment of the mine. Samples of laterite, shale, and coal were collected from three distinct locations (A, B, and C) within the mine, and their physical and strength parameters were determined through laboratory tests. The slope's probabilistic assessment using the factor of safety (FOS) was implemented into numerical modelling utilizing the Point Estimate Method (PEM). The slope random shear strength parameters were used as inputs for the finite-element numerical simulations to determine the corresponding FOS for each location. This study also investigates the influence of slope angle on the probability of slope failure, providing valuable insights into potential instability triggers. The results indicated that location C exhibited higher susceptibility to slope instability compared to the other locations. Consequently, appropriate slope angle recommendations were proposed for each location to mitigate the risk of slope failure effectively.
- Author Biographies
- References
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Akande, J. M., and Idris, M. A. (2007). Mechanism of Rock Slope Failure in Selected Quarries in Oyo State, Nigeria. Advanced Materials Research, 18, 13-19.
ASTM (American Society for Testing and Materials). (1999). Annual Book of ASTM Standards: Section 4, Construction: Soil and Rock. Philadelphia, PA: ASTM.
Bishop, A. W. (1955). The use of the slip circle in the stability analysis of slopes. Geotechnique, 5(1), 7-17.
Duncan, W. C. and Norman, N. I. (1996). Rock Slope Stability Analysis. Landslides: investigation and mitigation, 391-425.
Eberhardt, E. (2003). Rock slope stability analysis–utilization of advanced numerical techniques. Earth and Ocean sciences at UBC, 41.
El-Ramly, H., Morgenstern, N. R., and Cruden, D. M. (2002). Probabilistic slope stability analysis for practice. Canadian Geotechnical Journal, 39(3), 665-683.
Griffiths, D. V., and Fenton, G. A. (2004). Probabilistic slope stability analysis by finite elements. Journal of geotechnical and geoenvironmental engineering, 130(5), 507-518.
Hoek, E. (2007). Practical rock engineering. 2007. Online. ed. Rocscience.
Idris, M. A. (2014). Probabilistic stability analysis of underground mine excavations (Doctoral dissertation, Luleå tekniska universitet).
Idris, M. A. (2022). Probabilistic slope stability assessment of laterite borrow pit using artificial neural network. International Journal of Geotechnical Engineering, 16(9), 1152-1164.
ISRM (1981) Suggested method for determining the uniaxial compressive strength of rock materials, Rock Characterization, Testing and Monitoring (ISRM Suggested Methods), 113.
Janbu, N. (1955). Application of composite slip surfaces for stability analysis. European Conference on Stability of Earth Slopes, 1955, 3, 43-49.
Jiang, S. H., Chen, J. D., Wang, Z. Z., Zheng, J., Huang, J., and Lü, Q. (2023). Three-Dimensional Discrete Element Analysis of Jointed Rock Slope Stability Based on the Universal Elliptical Disc Model. Rock Mechanics and Rock Engineering, 1-21.
Kolade, A. S. (2019). Reliability assessment of open pit slope stability using numerical modelling approach: A case study of Dangote Coal Mine project in northcentral Nigeria. (MEng. thesis, Federal University of Technology, Akure).
Krahn, J. (2003). The 2001 RM Hardy Lecture: The limits of limit equilibrium analyses. Canadian geotechnical journal, 40(3), 643-660.
Lorig, L, and D. Stead. 2018. Numerical Analysis. In Rock Slope Engineering: Civil Applications. 5ed., edited by D.C. Wyllie, 319–348. Boca Raton, FL: CRC Press.
Phoon, K. K., and Kulhawy, F. H. (1999). Characterization of geotechnical variability. Canadian geotechnical journal, 36(4), 612-624.
Rabie, M. (2014). Comparison study between traditional and finite element methods for slopes under heavy rainfall. HBRC Journal, 10(2), 160-168.
Rosenblueth, E. (1981). Two-point estimates in probabilities. Applied mathematical modelling, 5(5), 329-335.
Steffen, O. K. H., Contreras, L. F., Terbrugge, P. J., and Venter, J. (2008, June). A risk evaluation approach for pit slope design. In ARMA US Rock Mechanics/Geomechanics Symposium (pp. ARMA-08). ARMA.
US. Army Corps of Engineers. (1997). Engineering and Design Introduction to Probability and Reliability Methods for Use in Geotechnical Engineering, Engineering Technical Letter No. 1110-2-547. Washington, DC: Department of the Army.
Wesseloo, J., and Read, J. (2009). Acceptance criteria. Guidelines for open pit slope design, 221-236.
Xiao, J., Gong, W., Martin II, J. R., Shen, M., and Luo, Z. (2016). Probabilistic seismic stability analysis of slope at a given site in a specified exposure time. Engineering Geology, 212, 53-62.
Zhang, W., Gu, X., Han, L., Wu, J., Xiao, Z., Liu, M., and Wang, L. (2022). A short review of probabilistic slope stability analysis considering spatial variability of geomaterial parameters. Innovative Infrastructure Solutions, 7(4), 249.
Zienkiewicz, O. C., Humpheson, C., and Lewis, R. W. (1975). Associated and non-associated visco-plasticity and plasticity in soil mechanics. Geotechnique, 25(4), 671-689.
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