摘要
人工补沙目前被认为是一种较为理想的砂质岸滩防护方式,对生态环境影响小,但存在补沙流失率高、重补周期短等问题。对亚龙湾西段砂质岸滩防护设计进行研究,针对工程海域波流作用显著、岸滩侵蚀强度大、景观要求高、生态环保要求严的特点,分析岸滩侵蚀原因,归纳不同方法的流失量、流失率、重补周期等关键指标,探讨不同方法对不同场景的适用性,结合模型试验研究,创造性地提出生态护岸、干滩补沙、近岸补沙、水下拦沙坝相结合的“四位一体”岸滩生态防护模式,预期5 a流失率降低20%以上,重补周期延长近1倍。
At present,artificial beach nourishment is considered an ideal way to protect sandy beaches,which has little impact on the ecological environment.However,it faces problems such as a high nourishment loss rate and a short replenishment cycle.This paper studies the design of sandy beach protection in the western section of Yalong Bay.In view of the characteristics of significant wave-current action,high beach erosion intensity,high landscape requirements,and strict ecological and environmental protection requirements in the project area,this paper analyzes the causes of beach erosion,summarizes key indicators such as the loss amount,loss rate,and replenishment cycle of different methods,explores the suitability of different methods for different scenarios,and combines model test research to creatively propose an“integrated four-in-one”beach ecological protection design model,which integrates ecological revetments,dry beach nourishment,nearshore nourishment,and underwater sand retaining dams.It is expected that the loss rate will be reduced by more than 20%within 5 years,and the replenishment cycle will be nearly doubled.
作者
王日旺
李冠星
冯海波
吴佳苹
WANG Riwang;LI Guanxing;FENG Haibo;WU Jiaping(Engineering Design Institute Co.,Ltd.of CCCC Fourth Harbor Engineering Co.,Ltd.,Guangzhou 510290,China;Guangdong Provincial Engineering Research Center of Coasts,Islands and Reefs,Zhuhai 519080,China)
出处
《水运工程》
2025年第11期19-28,共10页
Port & Waterway Engineering
关键词
人工补沙
生态护岸
干滩补沙
近岸补沙
水下拦沙坝
artificial beach nourishment
ecological revetment
dry beach nourishment
near-shore nourishment
underwater sand-retaining dam
