长江宜宾—重庆河段急滩消滩水力指标研究*

急滩是山区河流浅滩、急滩和险滩三大主要碍航滩险类型之一。介绍和评述了确定消滩水力指标的5种主要方法:经验分析法、航行阻力推算法、实船试验法、船模试验法和数学船模法。采用航行阻力推算法和船模试验法对长江宜宾至重庆河段急滩消滩水力指标进行研究,确定了消滩比降、流速组合,可作为急滩整治设计依据的关键参数。

On hydraulic parameters of rapids shoal abating for Yibin-Chongqing section in the Yangtze River

The rapids shoal is one of the three navigation-hampering shoal types in mountain rivers: shoal, rapids shoal, dangerous shoal. This paper introduces and evaluates the five available methods for determining the hydraulic parameters of the rapids shoal abating, i.e. experiential analysis method, resistance of navigation method,prototype vessel test method, model vessel test method and mathematical model vessel test method. According to the typical standard ship type, this paper studies the hydraulic parameters of the rapids shoal abating for Yibin-Chongqing section in the Yangtze River by the resistance of navigation method and model vessel test method. It may be applied to the regulation design of the rapids shoal channel.