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中文摘要：
在分汉河段整治过程中，丁坝对改变主、支汉分流起了关键性作用，而不同的丁坝布置将对分流比产生不同的影响，因此必须对此作进一步的研究。分析了分流比的选取模式，通过概化水槽试验，研究了丁坝布置情况下过水面积、流量、丁坝位置对分汉河道分流比的影响，并对大量试验资料进行分析总结，比较了从无丁坝布置到布置丁坝后分流比的变化规律。
英文摘要：
Spur dike has a critical effect on the diversions of main channel and branch channel in the process of regulating bifurcated channel, and different layout of spur dike has a different effect on diversion ratio. Thus, it is necessary to make a further research. The paper theoretically analyzes selection mode of diversion ratio, and studies the influences of area of river cross section, discharge and location on the diversion ratio of bifurcated river channel in the layout of spur dike through a general flume experiment. The change rules of the diversion ratio before and after the layout of spur dike are compared on the basis of abundant experimental data.
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