Incipient motion of cohesionless sediments on riverbanks with ground water injection
Incipient motion of cohesionless sediments on riverbanks with ground water injection作者机构：Nanjing Hydraulic Research InstituteState Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering School of Civil and Environmental EngineeringNanyang Technological Univ.
出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))
年 卷 期：2012年第27卷第1期
页 面：111-119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]
基 金：supported by the National Basic Research 973 Program of China(Grant No. 2012CB417002) the National Natural Science Foundation of China(Grant No.50779037,50879047) the Scientific Research Foundation for the Returned Overseas Chinese Scholars of Ministry of Personnel
主 题：Incipient motion Riverbank Injection Sediment Seepage
摘 要：This study investigates the influence of ground water injection on the initial movement of non-cohesive sediment particles on a riverbank slope analytically and *** including the hydraulic gradient in the force analysis,the critical condition was derived to account for the effect of seepage flow, showing that the seepage hydraulic gradient and the riverbank slope are governing parameters in modifying the incipient motion of sediments on a riverbank *** investigations were performed in an open-channel flume for various riverbank slopes and hydraulic gradients of injection, showing that the critical shear stress increases with decreasing riverbank slopes and vise-versa,while injection reduces the critical *** experimental data agree well with the theoretical derived expression of the critical condition in the case of injection.
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