摘要
西江界首—肇庆段位于西江航运干线广东段,河形蜿蜒多变,局部浅滩和礁石密集。自20世纪90年代以来历经数次整治,已满足2 000吨级船舶通航。2016年实施该航段3 000吨级航道扩能升级工程,对碍航的“四滩”(界首滩、蟠龙滩、新滩和都乐滩)河段采取疏浚、清礁和加密丁坝等工程措施。实测资料及数学模型分析表明,工程措施使得主槽畅通,实现全线航道通航水深大于4.5 m;“四滩”河段在不同特征流量下水位总体下降0.20~0.49 m,水面平均比降仅为0.013‰~0.053‰,水流流速变化值在-0.23~0.34 m/s,且大部分河段航槽内水流流向和航槽主轴夹角小于10°,航道通航条件明显提升,基本实现3 000吨级航道治理目标。研究成果可为该河段进一步扩能升级或类似特征条件的航道整治提供参考。
The section of Xijiang from Jieshou to Zhaoqing is located in the Guangdong section of the Xijiang Shipping Main Line.The river shape is winding and varied,with locally dense shoals and reefs.Since the 1990s,after several regulations,it has been able to accommodate ships of 2,000-ton class.The 3,000-ton class waterway expansion and upgrading project was implemented in 2016,taking engineering measures such as dredging,removing the reef,and encrypting spur dike of the“Sitan”section(Jieshou,Panlong,Xintan,and Dule shoals)that obstruct navigation.Analysis of measured data and mathematical models shows that the engineering measures have unblocked the main channel,realizing navigation depth greater than 4.5m for the entire waterway.The water level of the“Sitan”section has decreased by an overall 0.20-0.49 m under different characteristic flow rates,with an average water surface gradient of only 0.013‰-0.053‰.The change in water flow velocity is between-0.23 and 0.34 m s,and the angle between the water flow direction and the main axis of the channel in most sections is less than 10°.The navigation conditions of the channel have been significantly improved,and the management goal of 3,000-ton class channel has been basically achieved.The research results can provide references for further capacity expansion and upgrading of the river section or for channel regulation under similar characteristic conditions.
作者
胡勇
罗敬思
童朝峰
HU Yong;LUO Jingsi;TONG Chaofeng(Guangdong Provincial Transport Planning And Research Center,Guangzhou 510030,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)
出处
《水运工程》
2025年第8期161-167,201,共8页
Port & Waterway Engineering
关键词
西江
航道整治
效果分析
浅滩治理
Xijiang River
waterway regulation
effect analysis
shoals regulation
