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Pumping effect of wave-induced pore pressure on the development of fluid mud layer

机译：波致孔隙压力对流体泥浆层发育的泵送作用

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摘要

Fluid mud widely exists in the movement of fine sediment, which is an important potential cause of marine geological disasters. It is important to understand the generation and migration mechanism of fluid mud. The purpose of this study is to investigate the vertical migration response of fine-grained sediments by wave-fluid test of pore pressure response of silty seabed under wave action. The results show that the adhesion between the silt particles and the additional pressure of the film water have a significant effect on the liquefaction characteristics of the silt. Even if the liquefaction degree is far more than 100%, the soil does not completely liquefy. The experiment result show that, there is concentrated movement of the split channel, and mesoscopic migration of fine particles between the gaps of the particles, pumping effect provides an effective source of supply for the development of the floating mud layer, it also exacerbates modern sedimentation when strengthening the vertical exchange of shallow soil in the seabed. Besides, the blending of the middle and lower layers of the previous soil with the recent sediments has increased the difficulty of identifying the time series of the modern sedimentary layer to some extent.
机译：细泥沙运动中普遍存在流体泥浆，这是造成海洋地质灾害的重要潜在原因。了解流体泥浆的产生和运移机理很重要。本研究的目的是通过波浪作用下粉质海底孔隙压力响应的波流试验研究细颗粒沉积物的垂直迁移响应。结果表明，淤泥颗粒之间的附着力和膜水的附加压力对淤泥的液化特性有显着影响。即使液化程度远远超过100％，土壤也不会完全液化。实验结果表明，分流通道集中运动，细小颗粒在细缝之间介观迁移，泵送作用为浮泥层的发育提供了有效的供给源，也加剧了现代沉积。在加强海床浅层土壤的垂直交换时。此外，以前土壤的中下层与新近沉积物的混合在一定程度上增加了识别现代沉积层时间序列的难度。

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  • 来源
    《Ocean Engineering》 |2019年第1期|106391.1-106391.10|共10页
  • 作者

    Yang Zhongnian; Zhu Yongmao; Liu Tao; Sun Zhongqiang; Ling Xianzhang; Yang Jinmu;

  • 作者单位

    Qingdao Univ Technol Sch Civil Engn Qingdao 266033 Shandong Peoples R China;

    Ocean Univ China Key Lab Shandong Prov Marine Environm & Geol Engn Qingdao 266100 Shandong Peoples R China;

    Ocean Univ China Key Lab Shandong Prov Marine Environm & Geol Engn Qingdao 266100 Shandong Peoples R China|Qingdao Natl Lab Maine Sci & Technol Lab Marine Geol Qingdao 266061 Shandong Peoples R China;

    Harbin Inst Technol Harbin 150001 Heilongjiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pumping effect; Wave-induced; Silty seabed; Fluid mud layer;

    机译：抽气效果;波感应;粉质海底;流体泥层;

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