【摘要】 硬式护岸是传统的海岸防护手段.近几十年来,以养护海滩为主的软式护岸已成为欧美发达国家海岸防护的主要措施,而我国尚处于起步阶段.本文以厦门岛会展中心海岸养滩实践为例,通过分析其海岸地貌演变历史、数值模拟养滩工程方案及定期观测海滩养护后剖面的变化,论述了该工程的必要性和可行性,以及养护后海滩的稳定性.同时,结合发达国家护岸的发展趋势,对我国的护岸转型作了思考.研究表明厦门岛会展中心海滩养护工程的施工使该海岸防护方式由硬式转变为软式,工程完成后为期半年的剖面监测数据显示单位宽度留存的沙量平均为381.4 m3/m,为施工初期平均值440 m3/m的86.7%,表明该海滩基本稳定.海滩养护可以修复受损的海滩或者营造新的滨海沙滩,改善滨海城市环境,提高城市品位,促进城市滨海旅游的发展,进而带动社会经济的发展,具有社会、经济、环境、生态等多方面的效应.我国海岸防护观念正在由传统的硬结构护岸转向软式的沙滩护岸,海滩养护将是我国未来海岸防护的一种更好的措施.更多还原

【Abstract】 Hard-revetment is a conventional means of coastal protection.For decades,the soft revetment,which mainly consists of beach nourishment,has become an important way to protect the coast in developed countries in Europe and America,while it is still in its infancy in China.This paper focuses on the beach nourishment practice on the coast at Huizhan Zhongxin(Conference and Exhibition Center,CEC) Xiamen Island.Through constructing its geomorphology successions,numerical simulation of the beach nourishment plan and regular observation of the profile changes after the project,the necessity and feasibility of this project and stability of the nourished beach is discussed.Meanwhile,combined with the development of revetments in developed countries,the revetment reformation in China is discussed.The results show that the beach nourishment project in CEC coast have changed the revetment form from hard to soft.And the monitoring data of the five profiles for half a year after beach nourishment indicates that the average retained sand volume per unit width after 6 months is 381.4m3/m,which takes up 86.7% of 440m3/m at initial period,indicating that the new beach is basically stable.Beach nourishment can restore damaged beaches,improve the urban environment,increase the taste of the city,promote the development of urban coastal tourism and ultimately stimulate socioeconomic development.Beach nourishment covers social,economic,environmental,ecological,and many other effects.China’s coastal protection forms now is on the way from hard structure to soft nourishment and beach nourishment will be the better solution to coastal protection.更多还原