人民黄河
人民黃河
인민황하
Yellow River
2015年
8期
94-97
,共4页
李海波%陈鑫%张扬%张永禄%刘其世
李海波%陳鑫%張颺%張永祿%劉其世
리해파%진흠%장양%장영록%류기세
坡面流%植被分布%输沙率%拦沙率
坡麵流%植被分佈%輸沙率%攔沙率
파면류%식피분포%수사솔%란사솔
overland flow%vegetation distribution%sediment transport rate%sediment deposition
基于室内坡面流试验,研究了人工植被分布变化对坡面水流及输沙特性的影响。试验采用PVC管模拟植被,通过改变管径、分布方式来模拟不同的植被分布情况,包括“细管整齐排列”“细管错开排列”“粗管错开排列”等植被分布方式。研究结果表明,植被分布变化对坡面流扰动程度影响显著,使得水流流速、流态差异很大;对有淤积情况下的坡面流输沙率、拦沙率影响显著,而对没有淤积情况下的坡面流输沙率影响较小。
基于室內坡麵流試驗,研究瞭人工植被分佈變化對坡麵水流及輸沙特性的影響。試驗採用PVC管模擬植被,通過改變管徑、分佈方式來模擬不同的植被分佈情況,包括“細管整齊排列”“細管錯開排列”“粗管錯開排列”等植被分佈方式。研究結果錶明,植被分佈變化對坡麵流擾動程度影響顯著,使得水流流速、流態差異很大;對有淤積情況下的坡麵流輸沙率、攔沙率影響顯著,而對沒有淤積情況下的坡麵流輸沙率影響較小。
기우실내파면류시험,연구료인공식피분포변화대파면수류급수사특성적영향。시험채용PVC관모의식피,통과개변관경、분포방식래모의불동적식피분포정황,포괄“세관정제배렬”“세관착개배렬”“조관착개배렬”등식피분포방식。연구결과표명,식피분포변화대파면류우동정도영향현저,사득수류류속、류태차이흔대;대유어적정황하적파면류수사솔、란사솔영향현저,이대몰유어적정황하적파면류수사솔영향교소。
With the influence of different distribution of artificial vegetation,the characteristics of overland flow and the corresponding sedi-ment transport were herein investigated experimentally. The experimental vegetation model was made by the PVC pipe and the experimental distribution of artificial vegetation consisted of uniform and non-uniform modes. The results show that the characteristics of overland flow are significantly affected by the different vegetation distributions. When there is deposition on the overland,the non-uniform modes have higher effect on the characteristics of overland flow than that of uniform modes,but the effect is very little without the deposition. Similarly the sedi-ment transport rate depends on the changes of flow and vegetation distribution with the action of sediment deposition.