A STUDY ON NATURE FRIENDLY RIVER CHANNEL DESIGN METHOD USING STEP-POOL STRUCTURE FOR STEEP URBAN RIVER

Abstract

 Nature friendly river improvement technology of upper reach is not established. We conducted physical, movable-bed model to design nature friendly river channel of the Oide River and investigate energy dissipating effect of step-pool structure.
 As a result, river bed fluctuation and bank erosion could be minimized without using concrete river bank protection by appropriate arranging of groin and riprap. And, the experiment revealed that the step height and pool depth of 0.55m is the most appropriate structure of step - pool with the point of energy dissipation and river bed fluctuation in the Oide river.