Flood simulation considering probability of heavy rains and uncertainty of soil properties of earth-fill dams

S. Nishimura, T. Shuku, H. Nagao, K. Fujisawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The risk of earth fills during heavy rains is evaluated in this research. The rainfall intensity and the variability of the numerous soil parameters of the earth-fills related to soil erosion are dealt with as probabilistic parameters. When the peak overflow head on a spillway bed becomes greater than the design overflow head, overflow occurs. The peak overflow head, is determined within 72 hours of the rainfall, and the various rainfall patterns are tested by the Monte Carlo method. Furthermore, the statistical values of the parameters for the soil erosion are assumed, and the variability of the discharge hydrographs are derived from the values. The discharge hydrographs are applied for the flood simulation as input waves. The submerged area and the head of the flood discharge in the downstream area can be predicted. Considering disaster loss, the risk to the downstream area of the earth-fill dams can be evaluated.

Original languageEnglish
Title of host publicationGeotechnical Safety and Risk IV - Proceedings of the 4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013
Pages291-297
Number of pages7
Publication statusPublished - Mar 10 2014
Event4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013 - Hong Kong, Hong Kong
Duration: Dec 4 2013Dec 6 2013

Publication series

NameGeotechnical Safety and Risk IV - Proceedings of the 4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013

Other

Other4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013
CountryHong Kong
CityHong Kong
Period12/4/1312/6/13

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ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Safety, Risk, Reliability and Quality

Cite this

Nishimura, S., Shuku, T., Nagao, H., & Fujisawa, K. (2014). Flood simulation considering probability of heavy rains and uncertainty of soil properties of earth-fill dams. In Geotechnical Safety and Risk IV - Proceedings of the 4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013 (pp. 291-297). (Geotechnical Safety and Risk IV - Proceedings of the 4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013).