Author(s): G. Garbrecht; H. . Fahlbusch; W. Mertens
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Keywords: No Keywords
Abstract: In the past, the damming of water behind ice jams, with resulting levee failures, repeatedly occurred in the lower course of the Elbe, particularly in the river section around Jasebeck. Possible measures to reduce the damming of water were investigated in a model study with a horizontal prototype-to-model scale of 133.3: 1 and a vertical scale of 66.7: 1. Given the constraint that the main channel may not be altered, construction measures on the left overbank were investigated with the goals of postponing as long as possible the overflow of ice from the main channel into the overbank and of increasing the carrying capacity of the overbank for water and ice. A reduction in stage from 2.6 [m ] to 2.0 [m] was obtained upstream of the ice jam. As a result, the levees were overtopped at a discharge of 2700 [m sec] instead of a discharge of 2000 [m sec]. Similar measures on the right overbank are still to be investigated.
Year: 1981