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An Experimental Study on Erosion Characteristics of Permeable Spur
Author(s): 
Pages: 94-96,102
Year: Issue:  12
Journal: PORT & WATERWAY ENGINEERING

Keyword:  透水丁坝冲刷透水率;
Abstract: 通过在水槽中做动床实验,对透水丁坝附近河床的冲刷特性进行研究,并对透水丁坝的冲刷过程进行分析.结果表明,透水丁坝的最大冲刷深度随着透水率的增大而减小,但当透水率的变化范围在20%~30%时,对透水丁坝最大冲刷深度的影响不大;其下游侧有冲刷沟,冲刷深度从坝根(与渠岸接触部分)到坝头逐渐加深;另外,在坝头附近产生冲刷槽,其方向与水流方向一致,冲刷槽的深度随着透水率的增大而减小,当透水率的变化范围在30%~40%时,其冲刷长度为不透水丁坝冲刷长度的一半.
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