Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 15, issue 4
Articles | Volume 15, issue 4
https://doi.org/10.5194/nhess-15-919-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/nhess-15-919-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 15, issue 4
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, H.-W. Yu, and M.-C. Weng

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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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