Abstract: Main factors effecting on flow rate in braided river is gardient of anabranch, area of water, roughness and velocity.And the general factors effecting on flow rate in braided river is angle of anabrach, flow rate and upper engineering.Based on the typical model investigation of hydrodynamical, this paper analyses upper engineering effect on rate of flow rate in braided river.

Key words: braided river, rate of flow rate, engineering

摘要： 影响汊道分流比的主要因素有:两汊的比降、过水断面积、糙率、流速等.此外,分流角、总流量的大小、上游工程等对汊道分流比也有一定的影响.通过模型试验,主要讨论上游工程对分汊河道分流比的影响.

关键词: 汊道, 分流比, 工程