Stability and scour development of bed material on crossbar block ramps

作     者：Mario Oertel Daniel B.Bung 

作者机构：Hydraulic Engineering SectionLbeck University of Applied Sciences Hydraulic Engineering SectionAachen University of Applied Sciences 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2015年第30卷第4期

页      面：344-350页

核心收录：

学科分类：08[工学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 

主　　题：Crossbar block ramp Scouring Bed material erosion Particle densimetric Froude number 

摘      要：Block ramps are ecologically oriented drop structures with adequate energy dissipation and partially moderate flow velocities.A special case is given with crossbar block ramps,where the upstream and downstream level difference is reduced by a series of *** prevent the total structure from failing,the stability of single boulders within the crossbars and the bed material in between must be *** present paper addresses the stability of bed material and scour development for various flow *** bed material erosion may affect the stability of the crossbar boulders,which in turn can result in major damages of the *** new design approaches are developed to choose an appropriate bed material size and to avoid failures of crossbar block ramp structures.