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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : A new river levee type using geosynthetic-reinforced soil to increase resistance against overflow er...
A new river levee type using geosynthetic-reinforced soil to increase resistance against overflow erosion
Author : YASUO NIHEI(1), YUKI KURAKAMI(2), MAYU MORITA(3), SHO FUTAMI(3), SHOHEI KAWABE(4),YOSHIAKI KIKUCHI(5) and FUMIO TATSUOKA(6
ABSTRACT
Overflows of huge floods caused levee breaches in a great number of places around the world. As a reinforcing
technology to increase resistance against overflow erosion, we studied on a new type of levee in which Geosyntheticreinforced
soil (GRS) is applied. In the GRS levee, concrete panels connected to geo-grid layers reinforcing the main body
of the levee cover the slopes and crest of the levee. The model test revealed that 1) the GRS levee with steep back-slope
of 1:0.5 can maintain the high resistance against overflow erosion, showing that it can function effectively as a flood barrier
with a small cross-section at a low cost. 2) The GRS levee using relatively short geo-grid layers, not covering the full-width
of levee, can keep a high residual ratio of cross-sectional area against overflow for a long time. An appropriate short
length of geogrid layers that can exhibit sufficient resistance of the levee against overflow may be selected for a higher
cost-effectiveness.
File Size : 251,644 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 19/08/2015
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