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Stability Analysis of Upgraded Flood Embankments
Flood embankments are usually constructed along river banks using locally available materials to prevent loss of human life, infrastructure, and valuable property that can be caused by catastrophic floods during the monsoon season. Since they are built along the river plains, these structures are vulnerable to many problems, majorly due to seepage, and hence should be repaired or upgraded timely. In this paper, numerical analyses have been performed to investigate the stability of flood embankments when upgradation is done. Two different types of flood embankments have been considered, i.e. homogeneous and zoned, and are analysed in both steady state and complete drawdown conditions. For the case of homogeneous embankment, different types of upgradation processes are considered: widening on both sides, widening on one side, and without widening. For the case of the zoned embankment, the permeability of the core is varied, and stability is assessed. The results demonstrate that the downstream slope is more vulnerable to collapse in steady state conditions, while the upstream slope is most vulnerable in drawdown situations. In addition, the flood embankment widened on both sides is the most stable compared to the other types. Also, incorporation of an impervious core along with toe drain has also shown better results and can be recommended where the location area is confined.
Stability Analysis of Upgraded Flood Embankments
Flood embankments are usually constructed along river banks using locally available materials to prevent loss of human life, infrastructure, and valuable property that can be caused by catastrophic floods during the monsoon season. Since they are built along the river plains, these structures are vulnerable to many problems, majorly due to seepage, and hence should be repaired or upgraded timely. In this paper, numerical analyses have been performed to investigate the stability of flood embankments when upgradation is done. Two different types of flood embankments have been considered, i.e. homogeneous and zoned, and are analysed in both steady state and complete drawdown conditions. For the case of homogeneous embankment, different types of upgradation processes are considered: widening on both sides, widening on one side, and without widening. For the case of the zoned embankment, the permeability of the core is varied, and stability is assessed. The results demonstrate that the downstream slope is more vulnerable to collapse in steady state conditions, while the upstream slope is most vulnerable in drawdown situations. In addition, the flood embankment widened on both sides is the most stable compared to the other types. Also, incorporation of an impervious core along with toe drain has also shown better results and can be recommended where the location area is confined.
Stability Analysis of Upgraded Flood Embankments
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Shukla, Sanjay Kumar (editor) / Krishna, A. Murali (editor) / Thomas, Jimmy (editor) / Veena, V. (editor) / Aditya, Tholeti Venkata Satya (author) / Singh, Baleshwar (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
Proceedings of the Indian Geotechnical Conference 2022 Volume 7 ; Chapter: 31 ; 363-375
2024-07-14
13 pages
Article/Chapter (Book)
Electronic Resource
English
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