期刊
JOURNAL OF HYDRAULIC ENGINEERING-ASCE
卷 126, 期 7, 页码 492-501出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)0733-9429(2000)126:7(492)
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Data related to floodplain inundation by fast-rising floods are limited and needed. Eighteen data sets are provided from experiments conducted in a symmetrical compound channel that has a trapezoidal main channel. Three flood types were investigated: long, moderate, and short duration floods (LDF MDF, and SDF). The data include water depths, velocities, and bed shear stresses measured in straight and meandering reaches. Data show that a flat portion occurred in the MDF and LDF hydrographs when the floodplain was being inundated. Flood peaks stretch exponentially along the channel and are more pronounced in the meandering reach. An SDF has the fast decay rate, followed by MDF and LDE Overbank front speeds of the SDF and MDF can be predicted by the moving speed of a surge, with the surge height bring the difference of the bankfull depth from that of thr base flow. The tail of a synthetic hydrograph should be modified according to the channel storage so that it can be used as an inflow boundary condition.
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