Experimental Study on the Dam-Break Hydrographs at the Gate Location

作     者：LIU Hui LIU Haijiang GUO Liheng LU Senxun 

作者机构：Ocean College Zhejiang University Hangzhou 310058 P R. China College of Civil Engineering and Architecture Zhejiang University Hangzhou 310058 P R. China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2017年第16卷第4期

页      面：697-702页

核心收录：

学科分类：0710[理学-生物学] 081505[工学-港口、海岸及近海工程] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 08[工学] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：financially supported by the Natural Science Foundation of Zhejiang Province,China(No.LR14E090002) the National Natural Science Foundation of China(No.11632012) the Open Research Fund Program of State key Laboratory of Hydroscience and Engineering(No.sklhse-2016-B-02) 

主　　题：溃坝水流 实验室实验 浇口位置 对比验证 图像分析 水动力特征 初始水头 下游河床 

摘      要：When studying the dam-break flow phenomenon,the basic hydrodynamic features of the dam-break flow at the gate location should be verified *** this study,laboratory experiments were performed in a rectangular and horizontal flume with the same initial water head setting on the dry and wet downstream bed *** surface elevation was extracted through image analysis and validated by comparing with the data measured using a wave *** variation of the water surface elevation at the gate location,quantified in terms of high-speed video recorded images,can be divided into three stages,the sharp decreasing stage,the relatively steady stage,and the gradually decreasing *** of several classic analytical solutions of the dam-break problem at the gate location was validated using present experimental *** s solution is effective for the dry bed condition while Stoker s solution could be applied to the wet bed case,and both are only applicable during the steady *** solution reproduces the gate-site hydrographs well during both the relatively steady and the gradually decreasing stages,especially for the condition under which the down-upstream water depth ratio is smaller than 0.138.