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http://dx.doi.org/10.7843/kgs.2014.30.4.81

Numerical Analysis of Hydrograph Determination for Cohesive Soil Levee  

Kim, Jin-Man (Geotechnical Disaster & Environment research Division, KICT)
Kim, Ji-Sung (Geotechnical Disaster & Environment research Division, KICT)
Oh, Eun-Ho (Geotechnical Disaster & Environment research Division, KICT)
Cho, Won-Beom (Geotechnical Disaster & Environment research Division, KICT)
Publication Information
Journal of the Korean Geotechnical Society / v.30, no.4, 2014 , pp. 81-92 More about this Journal
Abstract
The integrity evaluation of river levee includes slope stability evaluation of riverside land and protected low-land, and safety of piping with respect to critical gradient and critical velocity based on related regulations, such as Design Criteria Rivers Commentary (2009), Structural Design Criteria Based Commentary (2009). The design hydro-graph is the most important design input factor for the integrity evaluation; it can be inaccurate due to the absence of its decision methods suggested by the national level. The authors in this paper evaluated numerical analytic levee integrity for piping and slope stability by changing each design hydro-graph, including rising ordinary water level, lasting flood water level, falling water level, and flood frequency for Mun-san-jae on Nak-dong River. Finally, the authors suggested that the levee integrity of piping and slope stability are very sensitive to the changes of increasing time of ordinary water level by 57 hours and lasting time of the flood water level by 53 hours, respectively, for Mun-san-jae.
Keywords
River embankment; Integrity evaluation; Piping; Slope stability; Design Hydrograph; Flood Event;
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