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http://dx.doi.org/10.3741/JKWRA.2002.35.1.077

A Study on the Hydraulic Characteristics for River Bed Revetments using Mattress  

Bae, Sang-Su (Dept. of Civil Engineering, Graduate School of Yeungnam University)
Heo, Chang-Hwan (Dept. of Civil Engineering, Chyngju National University)
Ji, Hong-Gi (Dept. of Civil Engineering, Graduate School of Yeungnam University)
Lee, Sun-Tak (Dept. of Civil Engineering, Graduate School of Yeungnam University)
Publication Information
Journal of Korea Water Resources Association / v.35, no.1, 2002 , pp. 77-90 More about this Journal
Abstract
The condition of initial movement for the river bed revetment using rip rap is a limit condition beyond which the lining is progressively destroyed as the separate elements are removed by the flow. In the case of the river bed revetment using mattress, however, after the initial movement the containment offered by the mesh remains. A new situation of equilibrium with a deformed river bed revetment using mattress is obtained, allowing it to withstand more severe conditions without compromising the resistance and without further bed deformation. Shield's coefficient for the river bed revetment using mattress is twice the value of that for the river bed revetment using rip rap. This means that with the same hydraulic behavior conditions, the average dimension of the rocks to be used in the river bed revetment using mattress is half that of the river bed revetment using rip rap rock. When the same size rocks are used the allowable velocity for the river bed revetment using mattress is more than twice, even as much as 3 or 4 times that for the river bed revetment using rip rap.
Keywords
bed deformation; revetment using mattress; revetment using rip rap; Shield's coefficient; initial movement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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