Experiments on Channel Evolution Caused by Check-dam Failure

作     者：Wen-Hsiao TSENG Hsiao-Wen WANG Shih-Chieh CHOU Yu-Lin KAO Chjeng-Lun Shieh 

作者机构：Department of Hydraulic and Ocean EngineeringNational Cheng Kung University 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2012年第9卷第2期

页      面：175-184页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 08[工学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 083202[工学-粮食、油脂及植物蛋白工程] 

主　　题：Check-dam failure Diffusion equation Debris flow 

摘      要：A 10 m long,0.2 m wide flume was employed to simulate the channel bed evolution of check-dam *** experiment longitudinal profiles,the gradient of channel bed,head-cutting propagation distance and deposition length were compared with the theoretical solution derived from a sediment transport diffusion *** contrast with the theoretical solution,two different gradients were obtained upstream and downstream of the *** theoretical solution provides a good description of the changes upstream of the check-dam. The ratio of clear water depth to sediment moving layer thickness in the experiment was analyzed and showed that high concentration sediment laden flow was taken in the incipient of check-dam failure,which may be the reason why the experiment result was slightly different from the theoretical solution in the downstream of check-dam.