Toe drain size and slope stability of homogeneous embankment dam under rapid drawdown
DOI:
https://doi.org/10.54355/tbus/1.3.2021.0001Keywords:
slope stability, embankment dam, seepage, toe drain, rapid drawdown, factor of safetyAbstract
The slope stability of an embankment dam has been always a serious concern of any design team. Unfortunately, the information on the potential influence of a toe drain size on the slope stability of an embankment dam under rapid drawdown conditions is still scarce. This study investigated the potential effect of a toe drain size on the slope stability of a homogeneous embankment dam under rapid drawdown conditions. Three different sizes (5m, 10m, and 15m) of the toe drain were investigated under instantaneous (worst scenario) and 5 days (more realistic) drawdown rates with the help of numerical modeling in GeoStudio. From the results, it was observed that the pore-water pressures at the upstream face of the embankment decreased with the increase in the toe drain size, while the pore-water pressures at the downstream toe were increasing with the increase in the toe drain size. The factor of safety values were also observed to be affected by the changes in the toe drain size.
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The Brumadinho dam rupture disaster, Brazil 2019: Analysis of the narratives about a disaster from the perspective of disaster law / D.W. de Carvalho // Revista de Estudos Constitucionais, Hermeneutica e Teoria do Direito. — 2020. — Vol. 12, No. 2. — P. 227-238. https://doi.org/10.4013/rechtd.2020.122.04 DOI: https://doi.org/10.4013/rechtd.2020.122.04
Control of Seepage through Earth Dams Based on Pervious Foundation Using Toe Drainage Systems / M.M. Aboelela // Journal of Water Resource and Protection. — 2016. — Vol. 08, No. 12. — P. 1158–1174. https://doi.org/10.4236/jwarp.2016.812090 DOI: https://doi.org/10.4236/jwarp.2016.812090
A numerical modeling study on the seepage under embankment dams / G. Kheiri, H. Javdanian, G. Shams // Modeling Earth Systems and Environment. — 2020. — Vol. 6. — P. 1075–1087. https://doi.org/10.1007/s40808-020-00742-9 DOI: https://doi.org/10.1007/s40808-020-00742-9
The failure of Teton Dam / H. Bolton Seed, J.M. Duncan // Engineering Geology. — 1987. — Vol. 24, No. 1-4. — P. 173-205. https://doi.org/10.1016/0013-7952(87)90060-3 DOI: https://doi.org/10.1016/0013-7952(87)90060-3
Upstream Cutoff and Downstream Filters to Control of Seepage in Dams / F. Salmasi, M. Nouri, J. Abraham // Water Resources Management. — 2020. — Vol. 34. — P. 4271–4288. https://doi.org/10.1007/s11269-020-02674-6 DOI: https://doi.org/10.1007/s11269-020-02674-6
Reliability analysis of slope stability in earthen dams following rapid drawdown / Z. Kahot, R. Dkiouak, A. Khamlichi // International Review of Applied Sciences and Engineering. — 2019. — Vol. 10, No. 1. — P. 101–112. https://doi.org/10.1556/1848.2018.0011 DOI: https://doi.org/10.1556/1848.2018.0011
Investigation of permeability effect on slip velocity and temperature jump boundary conditions for FMWNT/Water nanofluid flow and heat transfer inside a microchannel filled by a porous media / M. Nojoomizadeh, A. D’Orazio, A. Karimipour, M. Afrand, M. Goodarzi // Physica E: Low-dimensional Systems and Nanostructures. — 2018. — Vol. 97. — P. 226–238. https://doi.org/10.1016/j.physe.2017.11.008 DOI: https://doi.org/10.1016/j.physe.2017.11.008
Effect of groundwater table on slope stability and design of retaining wall / R. Ahmad, A.B. Mardhanie, P. Suroso, T.E. Sutarto, R. Alfajri // Journal of Physics: Conference Series. — 2020. — Vol. 1500. — P. 012072. https://doi.org/10.1088/1742-6596/1500/1/012072 DOI: https://doi.org/10.1088/1742-6596/1500/1/012072
Performance of analysis methods of slope stability for different geotechnical classes soil on earth dams / T.D.S. Pereira, A.D. Robaina, M.X. Peiter, F.D.V.A. Braga, R.B. Rosso // Engenharia Agrícola. — 2016. — Vol. 36, No. 6. — P. 1027–1036. https://doi.org/10.1590/1809-4430-eng.agric.v36n6p1027-1036/2016 DOI: https://doi.org/10.1590/1809-4430-eng.agric.v36n6p1027-1036/2016
Instability of a geogrid reinforced soil wall on thick soft Shanghai clay with prefabricated vertical drains: A case study / J.-F. Xue, J.-F. Chen, J.-X. Liu, Z.-M. Shi // Geotextiles and Geomembranes. — 2014. — Vol. 42, No. 4. — P. 302–311. https://doi.org/10.1016/j.geotexmem.2014.05.003 DOI: https://doi.org/10.1016/j.geotexmem.2014.05.003
Performance of a geogrid reinforced soil wall on PVD drained multilayer soft soils / J.-F. Chen, A. Tolooiyan, J.-F. Xue, Z.-M. Shi // Geotextiles and Geomembranes. — 2016. — Vol. 44, No. 3. — P. 219–229. https://doi.org/10.1016/j.geotexmem.2015.10.001 DOI: https://doi.org/10.1016/j.geotexmem.2015.10.001
Measurement and Simulation on Consolidation Behaviour of Soft Foundation Improved with Prefabricated Vertical Drains / C. Qi, R. Li, F. Gan, W. Zhang, H. Han // International Journal of Geosynthetics and Ground Engineering. — 2020. — Vol. 6, No. 2. — P. 23. https://doi.org/10.1007/s40891-020-00208-z DOI: https://doi.org/10.1007/s40891-020-00208-z
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