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| Titel |
Levee reliability analyses for various flood return periods – a case study in southern Taiwan |
| VerfasserIn |
W.-C. Huang, H.-W. Yu, M.-C. Weng |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 4 ; Nr. 15, no. 4 (2015-04-24), S.919-930 |
| Datensatznummer |
250119430
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| Publikation (Nr.) |
 copernicus.org/nhess-15-919-2015.pdf |
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| Zusammenfassung |
| In recent years, heavy rainfall conditions have caused disasters around the
world. To prevent losses by floods, levees have often been constructed in
inundation-prone areas. This study performed reliability analyses for the
Chiuliao First Levee
in southern Taiwan. The failure-related parameters were
the water level, the scouring depth, and the in situ friction angle. Three
major failure mechanisms were considered: the slope sliding failure
of the levee and the sliding and overturning failures of the retaining wall.
When the variability of the in situ friction angle and the scouring depth are
considered for various flood return periods, the variations of the factor of
safety for the different failure mechanisms show that the retaining wall
sliding and overturning failures are more sensitive to the change of the
friction angle. When the flood return period is greater than 2 years, the
levee could fail with slope sliding for all values of the water level
difference. The results of levee stability analysis considering the
variability of different parameters could aid engineers in designing the
levee cross sections, especially with potential failure mechanisms in mind. |
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