A SUGGESTION OF EFFECTIVE BLOCK ARRANGEMENTS WHICH PROMOTE DEPOSITION OF SUSPENDED SEDIMENT AROUND FOOT PROTECTION BLOCK

Abstract

 Suspended sediment deposits around foot protecton of river levee, and promotes growth of vegetation. The vegetation does not just provide the living place for habitat, but has possibility to increase the resistance of foot protection to the running water. In this study, deposition of suspended sediment around foot protection block was analized by the hydraulic experiment and numerical simulation. And effective block arrangements which promote deposition were devised by the simulation.

 The result shows that setting block group at regular intervals cause more widely deposition of sediment than setting blocks continuously to the river flow direction. In curved section, the block arrangements influence opposite suspended sediment.