| 浙江北部岛屿海域土体稳定性研究 |
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| 引用本文： | 叶银灿,顾小芸.浙江北部岛屿海域土体稳定性研究[J].海洋学研究,1996,14(1):1-18. |
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| 作者姓名： | 叶银灿 顾小芸 |
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| 作者单位： | 国家海洋局第二海洋研究所，中国科学院力学研究所 |
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| 摘 要： | 本文探讨了浙江北部岛屿区水道岸坡土体滑动的成因机制与滑坡的形态特征，对在波浪与重力共同作用下的边坡稳定性以及波浪底压引起的砂土液化进行了定量分析。研究表明，岛屿区水道中部与岸坡间强烈的冲淤反差，是该海域岸坡土体滑动不稳定因素积累的主要环境条件。目前发现的多数为中到大型的牵引式滑坡，主要由重力作用所致。对于波浪较大、水深较浅海域的粉砂、细砂分布区，浅表砂层存在着发生液化的可能性。
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| 关 键 词： | 土体稳定性，滑坡，砂土液化 |
A study for the seafloor sediment stability around the island areas of northern Zhejiang Province |
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| Ye Yincan, Chen Xitu, Song Lianqing, Yang Fengchun.A study for the seafloor sediment stability around the island areas of northern Zhejiang Province[J].Journal of Marine Sciences,1996,14(1):1-18. |
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| Authors: | Ye Yincan Chen Xitu Song Lianqing Yang Fengchun |
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| Abstract: | This paper has inquired into the formation mechanism and morphology features for thewater way submarine slides around the island areas of northern Zhejiang Province.The submarine slope stability under the action of wave and gravitational forces and seafloor sandy sediments liquefaction caused by wave-induced bottom-pressure have also been quantitatively evaluated.It indicates that the cases of strong erosion on the center position and siltation in theside banks of the water way are main environmental conditions to cause the massive sea floormovements. Slides found in the areas are mostly medium to large-sized retrogressive slides,and triggered mainly by gravitational forces. For the strongly wave-influenced and shallow water areas with sandy seafloor there is a possibility of liquefaction. |
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| Keywords: | seafloor sediment stability slide liquefaction of sand soil |
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