急弯河段通航水流条件与航道宽度关系研究

急弯河段水流流态复杂,船舶过弯所需的航道宽度要远大于直线段航道宽度,也大于一般的弯区河段航道宽度。根据汉江下游马口滩急弯河段船模航行试验成果,总结分析了船舶在弯道段航行时占用的航宽与水流的关系,表明船舶以大致相同的航速上、下航行通过弯道时,上行时占用的航宽比下行时要小的多。流速或流向角越大,船舶的航迹带宽度越大,占用的航宽也越大。在此基础上建立了马口滩急弯河段航宽计算公式。

Study on relationship between navigation flow conditions and channel width in sharp bend reach

The water flow regime of sharp bend reach is complicated. The width of channel for ship crossing the bend reach is much greater than the line width of channel and the general bending section of the river channel width. According to the ship model test results of Makou reach in the lower reaches of Hanjiang River, the relationship between channel width for ship crossing the bend reach and flow were summarized. The results indicate that the navigation width for ship sailing upward through the bend is much smaller than sailing downward with the same speed. The ship track width and the channel width increase with the increasing of velocity and flow angle. On this basis, width calculation formula of Makou sharp bend reach was built.