分期围堰导流的迭代法求解  

Solution by Means of Iteration Method for Multi-phase Diversion

作　　者：吕兴祖 宗鸣 

机构地区：西安理工大学

出　　处：《陕西水力发电》1995年第3期53-56,共4页Journal of Shaanxi Water Power

摘　　要：分期围堰是常用的导流方式，导流初期河床被围堰束狭，造成上游水位的壅高。水流流态随纵向围堰长度与水头之比。可分为宽顶堰流与明渠流。考虑到电脑的广泛应用，本文推荐采用迭代求解正常水深ｈ０，临界水深ｈｋ及河糟缩窄后的水位壅高。Cofferdam in stages is an ordinary diversion method during construction. At the earlystage of diversion, river channel is contracted by cofferdam and makes upstream water levelraised up higher.According to the ratio of the length of longitudinal cofferdam to the waterhead, broad weir flow and open channel flow are determined respectively. In the article, the iter-ation method is recommended for calculating normal water depth ho, critical water depth hk andraised upstream water level due to the contraction of river channel.

关 键 词：分期导流 水力计算 迭代法 围堰 

分 类 号：TV135.5[水利工程—水力学及河流动力学]