中国农村水利水电
中國農村水利水電
중국농촌수이수전
CHINA RURAL WATER AND HYDROPOWER
2009年
7期
86-88
,共3页
截流%宽戗%宽度效应
截流%寬戧%寬度效應
절류%관창%관도효응
end dumping closure%broad closure dyke%width effect
运用物理模型试验方法,阐明了在相同的龙口底宽情况下,分流流量、龙口流量与截流戗堤顶宽关系;指出了龙口水流流速随截流戗堤顶宽增加的变化规律以及龙口水深的沿程变化规律;分析了戗堤龙口段的水流流态及宽度效应,提出了合理的戗堤顶宽及进占方法,可以给导截流设计施工提供设计依据.
運用物理模型試驗方法,闡明瞭在相同的龍口底寬情況下,分流流量、龍口流量與截流戧隄頂寬關繫;指齣瞭龍口水流流速隨截流戧隄頂寬增加的變化規律以及龍口水深的沿程變化規律;分析瞭戧隄龍口段的水流流態及寬度效應,提齣瞭閤理的戧隄頂寬及進佔方法,可以給導截流設計施工提供設計依據.
운용물리모형시험방법,천명료재상동적룡구저관정황하,분류류량、룡구류량여절류창제정관관계;지출료룡구수류류속수절류창제정관증가적변화규률이급룡구수심적연정변화규률;분석료창제룡구단적수류류태급관도효응,제출료합리적창제정관급진점방법,가이급도절류설계시공제공설계의거.
River closure is a key project in hydraulic construction. An undistorted physical model whose model scale is eighty is built in this study. Model of closure composed of open diversion channels and longitudinal cofferdams can be similar in rectangle river beds with flat bottom. During the experiment, advancing symmetrically by end-dumping method from either bank is carried out. The vari-ation regularity of the discharge in open diversion channels , and the flow velocity at the bottom of closure gap is discovered in this paper, and the width effect of closure dykes in end-dumping closure with single embankments is studied. Based on the test results, reasonable range of width embankment is pointed out.
