Articles | Volume 15, issue 4
Nat. Hazards Earth Syst. Sci., 15, 919–930, 2015
https://doi.org/10.5194/nhess-15-919-2015
Nat. Hazards Earth Syst. Sci., 15, 919–930, 2015
https://doi.org/10.5194/nhess-15-919-2015

Research article 24 Apr 2015

Research article | 24 Apr 2015

Levee reliability analyses for various flood return periods – a case study in southern Taiwan

W.-C. Huang et al.

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Cited articles

Brandon, T., Wright, S., and Duncan, J.: Analysis of the stability of I-Walls with gaps between the I-Wall and the levee fill, J. Geotech. Geoenviron., 134, 692–700, 2008.
Briaud, J., Chen, H., Govindasamy, A., and Storesund, R.: Levee erosion by overtopping in New Orleans during the Katrina Hurricane, J. Geotech. Geoenviron., 134, 618–632, 2008.
Chang, L. P.: The Disaster Investigation and Improvement Measures of Hydraulic Facilities after Typhoon Morakot. Risk Assessment for Geotechnical Facilities under Extreme Events, Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, 2012.
Dos Santos, R. N. C., Caldeira, L. M. M. S., and Serra, J. P. B.: FMEA of a tailings dam, Georisk, 6, 89–104, 2011.
Dou, S.-T., Wang, D.-W., Yu, M.-H., and Liang, Y.-J.: Numerical modeling of the lateral widening of levee breach by overtopping in a flume with 180° bend, Nat. Hazards Earth Syst. Sci., 14, 11–20, https://doi.org/10.5194/nhess-14-11-2014, 2014.
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Short summary
For Chiuliao first levee, the slope sliding failure is the most likely mode to occur under all flood water level heights. However, the levee may undergo foundation sliding failure with a water level difference coefficient of 0.25 to 0.3 over a long flood return period. This is because of the high water levels and large local scouring depths. Therefore, the updated levee design cross section with rows of piles and thickened backfill material was designed to overcome possible failure modes.
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