首页|支流水沙作用下干流床面冲淤特征试验研究

支流水沙作用下干流床面冲淤特征试验研究

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通过一系列的水槽试验,研究了交汇角为30°时不同水沙条件下干流床面冲淤特性,获得了在支流有无来水、来沙时不同主支汇流比下的干流床面冲淤二维等值线图,初步揭示了干流床面冲淤随主支流量比及支流是否来沙的变化特性.研究成果对了解交汇区的冲淤变化及河床演变具有积极的作用.
Experimental Study on Bed Morphology at Channel Confluence with Tributary Action
There are complex interrelationships and internal mechanisms among bed form, sediment transport and flow structure in natural river, in particular in confluent river. The experiments were conducted in flume including different cases, e.g. , without branch flow, branch flow with clear-water, branch flow with both water and sediment. The stable bed morphology in every case was measured and analyzed with different discharge ratios q* of the branch channel flow Qb to combined tail-water flow Qt. The characteristics of variation of bed morphology of main channel under above-mentioned cases were revealed.

confluencebed morphologydischarge ratio

刘同宦、王协康、郭炜、刘兴年、王宪业

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长江科学院,河流研究所,武汉,430010

四川大学,水力学与山区河流开发保护国家重点实验室,成都,610065

交汇 床面冲淤 汇流比

国家自然科学基金杰出青年科学基金

50409012

2006

长江科学院院报
长江科学院

长江科学院院报

CSTPCDCSCD北大核心
影响因子:0.618
ISSN:1001-5485
年,卷(期):2006.23(2)
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