在对枢纽下游航道整治线宽度研究的基础上,结合长江中游的水沙特点,对影响长江中游航道整治线宽度的各因素进行分析,认为整治线宽度与河宽的比值可表示为整治前后水深比值的指数形式,并采用长江中游周天河段整治线宽度的试验结果来确定指数值,从而得出整治线宽度的计算公式.该公式应用于长江中游周天河段、窑监河段、牯牛沙河段的计算结果表明,该公式适用于三峡水库运行后长江中游浅滩航道整治线宽度的计算.%Based on studies on the width of waterway regulation lines downstream the Three Gorges Reservoir and combined with the water and sediment characteristics in the middle reaches of Yangtze River, various factors for the width of waterway regulation lines in the middle reaches of Yangtze River were analyzed. The ratio of the width of waterway regulation line to the river width could be expressed as the exponential form of the ratio of the water depths before and after regulation. The experimental data of Zhoutian reach in the middle reaches of Yangtze River were employed to determine the exponential value. Accordingly, a formula for the width of waterway regulation lines was derived. It was applied to the calculation of the width of waterway regulation lines for Zhoutian reach, Yaojian reach and Guniusha reach. The calculated results show that the proposed formula can be used to calculate the width of waterway regulation lines in the middle reaches of Yangtze River after the operation of Three Gorges Reservoir.
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