摘要
靖海湾是典型的弧形海岸,其上岬角之前位于北炮台,现在位于电厂防波堤头,形成人工岬角,下岬角为资深角。文章根据多年地形资料和岸线对比分析,利用抛物线模型理论和MEPBAY软件,对靖海电厂防波堤工程实施前后靖海湾岸滩稳定性进行了分析和研究,结果表明:(1)靖海湾在电厂防波堤实施前,弧形岸段的遮蔽段侵蚀,开敞段堆积,处于"侵蚀动态平衡"状态;(2)自2006年防波堤建成至今,目前的淤进速率已逐渐减缓,渐渐逼近平衡岸线形态。因此,海岸地貌调整应接近稳定,靖海湾转为"堆积型动态平衡";(3)通过可视化软件MEPBAY在海岸工程中应用,验证了抛物线模型在靖海湾稳定性分析中的适用性。
Jinghai Bay is a typical arc-shaped coast,the upcoast headland was located in the Beipaotai before 2006,now located in breakwater head which is the man-made headland.The downcoast headland is located in Zishen.Based on topography data and coastline for many years,Jinghai Bay shore stability was analyzed using the parabolic headland-bay shape model and MEPBAY software before and after the breakwater engineering constructed.The results show that：（1） Before the implementation of the breakwater,the shaded section of the arc-shaped bank was eroded and the open section was silted.Jinghai Bay was in a dynamic balance of erosion.（2）The current siltation rate has gradually slowed down,gradually approaching the equilibrium state.Therefore,the coastal topography adjustment should be close to stability.Jinghai Bay regarded to be in dynamic balance of accretion at present.（3） By the application of MEPBAY to coastal engineering,the applicability of parabolic headland-bay coast shape model to Jinghai Bay was also validated.
作者
谢华亮
韩志远
左书华
解鸣晓
李怀远
黎树式
XIE Hua-liang;HAN Zhi-yuan;ZUO Shu-hua;XIE Ming-xiao;LI Huai-yuan;LI Shu-shi(Tianjin Research Institute of Water Transport Engineering,National Engineering Laboratory for Port Hydraulic Construction Technology,Key Laboratory of Engirwering Sediment,Ministroy of Transport,Tianjin 300456,China;The key laboratory of coastal science and engineering,Beibu Gulf,Qin zhou 535011,China)
出处
《水道港口》
2018年第3期269-274,共6页
Journal of Waterway and Harbor
基金
国家自然科学基金(51509120)
广西北部湾海岸科学与工程实验室基金资助(2016KYB03)
关键词
抛物线模型
MEPBAY
稳定性分析
靖海湾
Parabolic headland-bay shape model
MEPBAY
Stability analysis
Jinghai Bay
