摘要:
针对海岸侵蚀、沙滩退化问题,近年来在秦皇岛开展了一系列海滩养护方面的工作,积累了一套较为实用的经验和方法。介绍了秦皇岛西海滩、金梦海湾、老虎石和东海滩4个典型案例,其中西海滩采用了"沙丘—海滩—沙坝—潜堤"海滩养护模式,金梦海湾以滩肩补沙为主,老虎石侧重保护,东海滩则是需要多次维护。同时,总结了海滩养护的方案论证、规划设计、工程监测等方面的经验和教训,并就养滩寿命、沙坝的适用性以及工程风险等问题进行了探讨。
关键词:
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海滩养护
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岬湾
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岸滩演变
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养护模式
Abstract:
In recent years, a number of beach nourishment projects have been implemented in Qinhuangdao, to deal with the problems of coastal erosion and beach degradation. From practice we have learnt the way of thinking and methodology to concur the problems in front of us. The management projects of the Western Beach, Jinmeng Bay Beach, Laohushi Beach and Eastern Beach described in this article are typical cases. For the Western Beach, we adopted the option of "dune-beach-sand bar-submerged breakwater" beach nourishment. For the Jinmeng Bay Beach, priority is given to sand nourishment on berm. The Laohushi Beach needs protection instead of sand nourishment, and the Eastern Beach is the case which needs daily maintenance. This paper summarized the experiences and lessons we have learnt from the planning and design, implementation to monitoring of the project, and discussed the beach life, applicability of sand bar related engineering risks and other issues.
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