IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 8 - CLIMATE CHANGE AND HAZARD MITIGATION : Design for River Levee with Increased Resistance against Overflow Erosion
Design for River Levee with Increased Resistance against Overflow Erosion
Author : Yuki Kurakami, Yasuo Nihei, Kojiro Yada, Tatsuya Yamazaki, Shinpei Yamaguchi, Shohei Kawabe, Yoshiaki Kikuchi and Fumio Tatsuoka
Levee breaches occur at a great number of places in Japan mainly due to overflows of huge floods. To increase the resistance of levees to overflow erosion, we proposed a new type of levee in which concrete panels connected to geo-grid layers reinforcing the sand cover the slopes and crest of the levee. Various laboratory tests were conducted to evaluate the resistance of this method to overflow erosion. The results indicated that 1) the sand backfill that has a degree of compaction lower than 85 % has low resistance to overflow erosion due to infiltration that is too large; 2) the previous levee was able to maintain the levee body shape for a long time only by using panels laid, but the levee rapidly fails when erosion progresses; and 3) the proposed levee can survive overflow continuing for a long duration, showing that it can function effectively as a flood barrier.
File Size : 189,492 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 19/07/2016
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