The Effect of Sediment Size and Face Slope on Breach Formation of Non-cohesive Homogeneous Embankments Failed by Overtopping
Previous research mainly focused on flood propagation and few works were done for dam breach formation. It is difficult because it relates to several branches of knowledge such as hydraulics, sedimentary dynamics and soil mechanics at the same time. Laboratory experi-ments for non-cohesive homogenous embankments failed by overtopping have been undertak-en to research the effects of sediment size and face slope on breach formation in Nanjing Hy-draulic Research Institute (NHRI). According to the results median diameter D50 has little effects on breach formation. Decreasing the downstream face slope has significant effects on it. It can delay the flood peak from dam breach and slow the speed of lateral extension of breach.
Non-cohesive homogeneous embankment breach formation sediment size face slope
Li Yun Wang Xiaogang Li Jun Xuan Guoxiang
Nanjing Hydraulic Research Institute, Nanjing 210029, China State Key Laboratory of Hydrology-Water Resources And Hydraulic Engineering, Nanjing 210029, China
国际会议
International Conference on Dam Safety Management(2008水库大坝安全管理国际研讨会)
南京
英文
215-220
2008-10-22（万方平台首次上网日期，不代表论文的发表时间）