湛江湾外深水航道淤积特征及原因分析  

Study on the characteristic and causes of the Deep-water channel siltation outside Zhanjiang Bay

作　　者：谢华亮[1] 杨春松 韩志远[1] 左书华[1] 李怀远[1] 张娜[1] XIE Hua-liang;YANG Chun-song;HAN Zhi-yuan;ZUO Shu-hua;LI Huai-yuan;ZHANG Na(Tianjin Research Institute for Water Transport Engineering,National Engineering Research Center of Port Hydraulic Construction Technology,Key Laboratory of Engineering Sediment,Ministry ofTransport,Tianjin 300456,China;National Investment Project Evaluation Center,National Development and Reform Commission,Beijing 100037,China)

机构地区：[1]交通运输部天津水运工程科学研究所港口水工建筑技术国家工程研究中心工程泥沙交通行业重点实验室,天津300456 [2]国家发展和改革委员会国家投资项目评审中心,北京100037

出　　处：《水道港口》2023年第1期47-52,共6页Journal of Waterway and Harbor

基　　金：国家重点研发计划项目(2016YFC0402602)。

摘　　要：湛江湾外航道位于广东省雷州半岛北部,基于近期湛江湾外30万t级航道实测地形数据以及多年海图等资料,分析了湛江湾外深水航道淤积特征,并对其淤积成因进行了探讨。结果表明,湛江湾外深水航道淤积主要集中在B点东西两侧K17+000~K31+000,航道平均淤强在0.44~0.65 m;中线北侧航道淤积强度和淤积量均大于南侧,且这种淤积态势将继续存在;航道南北两侧浅滩就地搬运的泥沙为航道回淤的主要泥沙来源,航道B点附近海域北侧浅滩泥沙在侵蚀后自北向南搬运,形成底沙输移,是目前航道B点附近淤积量较大的主要原因;南侧浅滩不会对航道的淤积构成威胁。The Deep-water channel Outside Zhanjiang Bay is located in the northern part of Leizhou Peninsula in Guangdong Province.Based on the topographic data and multi-year charts,the characteristics of the Deep-water channel siltation outside Zhanjiang Bay were analyzed,and the causes of siltation were discussed.The siltation in the Deep-water channel outside Zhanjiang Bay was mainly concentrated between K17+000 and K31+000 around point B,and the average siltation intensity of the channel was in the range of 0.44~0.65 m.However,the siltation in the north half of the channel was greater than that in the south.The siltation trend will continue to exist.The sediment transported locally on both sides of the channel was the main sediment source of the channel siltation,the eroded sediment near Point B of Deep-water channel was transported from north to south with the form of bedload transport into the channel,which is the main reason for the strong siltation near point B of the channel.The south shoal is not a threat to siltation of the channel.

关 键 词：深水航道 淤积特征 淤积成因 湛江湾 

分 类 号：U651[交通运输工程—港口、海岸及近海工程]