上海石化近岸海床冲淤特征与海堤稳定性分析

发布时间：2018-04-23 10:50

  本文选题：海床冲淤 + 海堤稳定性　； 参考：《长江流域资源与环境》2015年08期

【摘要】：运用GIS对2000~2013年上海石化近岸海床冲淤特征、机制及海堤稳定性进行研究。结果表明:(1)2000~2013年海床大范围为淤积区,但金山深槽冲刷强度较大。其中,2000~2004、2004~2008年以冲刷为主,年均净冲刷速率为5.27cm和10.52cm;2008~2012年以淤积为主,年均净淤积速率为8.50cm;2012~2013年冲淤较稳定,稳定区占总面积的76.04%;(2)8个断面北岸及深槽中部(断面Ⅴ)地形较稳定,但在深槽西部(断面Ⅰ和Ⅱ)和东部(断面Ⅶ和Ⅷ)南侧冲刷;离岸15m以浅海床以淤积为主;(3)海堤稳定评估中,第六次围堤岸段稳定性较低。总之,海床的冲刷与金山涨潮冲刷槽补沙机制的丧失有关,同时城市沙滩、南汇促淤等工程也有影响,新一轮涉水旅游项目正在开发中,需密切关注。
[Abstract]:The characteristics, mechanism and stability of offshore seabed scour and deposition in Shanghai Petrochemical Corporation from 2000 to 2013 were studied by GIS. The results show that the sea bed is a silt area from 2000 to 2013, but the erosion intensity of Jinshan deep trough is high. From 2004 to 2008, the annual net scour rate was 5.27cm and 10.52 cm / L, and the average annual net deposition rate was 8.50 cm / a from 2012 to 2012. The scour and siltation were stable from 2012 to 2013, and the stable area accounted for 76.04 / 2 of the total area.) the topography of the north shore and the middle part (section 鈪，

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