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Experimental study on evolution of debris at the vicinity of confluence
Author(s): 
Pages: 33-37
Year: Issue:  1
Journal: JOURNAL OF HYDRAULIC ENGINEERING

Keyword:  泥石流交汇角相对壅水高度淤积率流量比淤积深度;
Abstract: 本文在试验的基础上,分析了泥石流入汇主河后,汇口附近各水力参数的变化规律.探讨了泥石流入汇后下游水位相对壅高与流量比以及交汇角的关系,得出相对壅水高度随流量比及交汇角的增大而增大的结论.分析了主河在入汇口附近的淤积变化规律.在30°、60°和 120°交汇情况下,淤积量随支流流量及流量比的增大而增大;淤积率则随总流量增大而减小,在主支流量相当时出现最大值.90°交汇时,淤积量随支流流量及流量比的增大而减小;淤积率随总流量增大而增大,在主支流量相当时出现最小值.平均及最大淤积深度在主支流量相当时出现最大值.顺河向交汇时,淤积深度最大值随交汇角增大而增大,120°交汇时淤积深度与30°交汇时相当.
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