钦州港东航道扩建工程复式航道设计

Design of navigation channel with compound cross section for expansion project of eastern channel of Qinzhou Port

针对钦州港东航道不满足10万吨级及以上集装箱船不乘潮通航、制约钦州港发展远洋集装箱运输问题,经多方案对比分析论证,提出在原批复的10万吨级集装箱船双向乘潮通航的基础上,对其东半部按照10万吨级集装箱船不乘潮通航、兼顾15万~20万吨级集装箱船乘潮通航的标准进行局部浚深,形成一种特殊的新型复式航道,结合虚拟航标的应用和港口调度,可用较经济的方式同时兼顾超大型集装箱船对航道通航水深的需求和主力船型双向通航对航道宽度的需求。介绍了钦州港东航道扩建工程复式航道及其配套航标布置的设计要点,对航道建成后的航行规则和管理措施提出建议,并总结各类复式航道断面形式的特点和适用情形,可供类似项目参考借鉴。

In view of the fact that the eastern channel of Qinzhou Port does not meet the requirements of full tidal access for container ships of 100,000 DWT and above,which restricts the development of ocean-going container transportation in Qinzhou Port,and through comparative analysis and demonstration of many schemes,it is proposed that,on the basis of the original approved two-way channel with tidal limitation for 100,000 DWT container ships,the eastern part of the channel is partially dredged and deepened to meet the standard of full tidal access of 100,000 DWT container ships,and entry of 150,000-200,000 DWT container ships within suitable tidal window,forming a special new type cross section of navigation channel with two different navigation depths,which is called‘compound cross section’.Combining with the application of virtual navigation marks and port scheduling,the requirements of the ultra-large container ships on the depth of the navigation channel and the requirements of two-way navigation channel for major ship types on the channel width can be met simultaneously in a more economical way.This paper introduces the key points of the design of navigation channel with compound cross section and its supporting aids to navigation for expansion project of the eastern channel in Qinzhou Port,puts forward suggestions on the navigation rules and management measures after the completion of the channel,and summarizes the characteristics and applicable situations of various compound cross sections of navigation channel,which can be used as reference for other similar projects.