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Relationship between terrain erosion and flow turbulence characteristics around spur dike
Author(s): 
Pages: 129-135
Year: Issue:  4
Journal: Port & Waterway Engineering

Keyword:  spur diketurbulencetopography characteristicsrelationship;
Abstract: 通过动床冲刷试验对不同形式丁坝的水流紊动特性进行对比分析,结合河床冲刷地形等值线图,找出水流紊动特性与河床冲刷之间的关系.在此基础上,深入分析不同形式丁坝对水流紊动特性的影响,优选出新型坝体结构形式.试验结果表明:丁坝周围地形的冲刷与水流紊动的强烈程度有关,冲刷坑的深度随水流紊动特性的变化有先增大后减小的趋势;沙垄主要由粗砂组成,且断面形状呈“流线型”,回流区出现细砂覆盖层;圆弧断面和勾头形式丁坝在减弱水流紊动方面具有一定的优势.
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