ESTIMATION OF INFLOW TO INUNDATION AREA DUE TO LEVEE BREACH
There have been many numerical studies simulating the flood inundation, for which it is of importance to use an inflow to an inundation area as initial and boundary conditions.However, few experimental studies for the inflow estimation have been carried out. In this study,experiments were conducted to estimate an inflow to an inundation area due to levee breach with consideration of breach slope and width. The experiment tank is 30m long and 25m wide, and the channel is 30m long and 5m wide. The fiat bed of both the channel and the inundation area are made of cement mortar. The initial water level in the channel was changed from 0.15m to 0.45m with a difference of 0.05m. Each water level was tested for the levee breach widths of 0.5m, 1.0m, 1.5m and 2.0m, and the levee breach slope (V:H) of 1:0.0, 1:0.1, 1:0.3, and 1:0.5. The experimental results were compared with side weirs, broad-crested weirs and an analytic solution of the dam break flow. From the comparisons, the inflow of the experiments is found to agree with the broad-crested weir flow. In the relationship between an experimental inflow per unit width q and overflow depth ho, the effect of the breach slope and width appears to be insignificant, which consequently results in a single curve of the relationship regardless of the breach slope and width.
levee breach inflow inundation ezperiment
Hyun Jae Chu Kwang Seok Yoon Jong Kyu Lee
River and Coast Research Division, Korea Institute of Construction Technology, Goyang, Korea Civil Engineering, Hanyang University, Seoul, Korea
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1022-1025
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）