Dissertation > Excellent graduate degree dissertation topics show

The Simulation of Liquefaction and Stability of the Seabed Slope Ahead of Caofeidian Cape

Author: ZhangYu
Tutor: WuQiang
School: Beijing
Course: Geological Engineering
Keywords: Caofeidian Seabed Liquefaction Slope Stability Liquefaction Depth
CLC: P753
Type: PhD thesis
Year: 2012
Downloads: 56
Quote: 0
Read: Download Dissertation

Abstract


The sediment around Caofedian Cape sea area is mainly composed by silt sand and fine sand. Because the underwater slope is steep, the seabed liquefaction may be induced, when the extreme wave condition occurs. Through physical tests and numerical simulations, this paper mainly studys on wave-induced seabed liquefaction, and how the liquefaction influences the slope stabilities.Firstly, a brief literature review of wave induced liquefaction is studied. Secondly, based on the surveyed documents, the ocean enviorment conditions of Caofeidian Cape are concluded. Then by using dynamic triaxial test and flume test, the sediment anti-liquefaction abilities and the sandbed responds to wave action are studied respectively. Through numerical simulation, based on finite element software, a forecast of how the liquefaction developed under different wave condition is studied. Finally, by using Geo-slope/W and Sweden slice method, the whole stability and the stability of liquefaction sediment are calculated and evaluated, and some control measures are suggested.As the results show, only when the wave height is large enough, the liquefaction of seabed may occur and, with the increase of the wave height, the depth of liquefaction increases sharply. Under the storm surge condition, the whole slope stability decrease sharply compare to the original, however, the stabilizing force is still larger than the slide force. Through the slice calculation of the liquified sediment, an obvious accumulated stress may threaten the safety of coastal structures which are built on the underwater slope.

Related Dissertations

  1. The Realization of Coal Liquefaction in the Continum Model System and the Experimental Research of Coal Liquefaction,TQ529.1
  2. Caofeidian Heavy Equipment Plant Project Schedule Management Research,TU722
  3. Research on Slope Stability of South Bench of Yima Northern Open-Pit Mine,TD824.7
  4. Analysis on Slop Stability of Mountain Highway,U416.14
  5. Research on Stability Reliability and Control Technology of High Slope of Mountain Highway After Excavation,U416.14
  6. Straw pots formaldehyde release on seed germination and Countermeasures Discussion,S359
  7. Analysis of Stability and Simulation on Highly Vertical Slope of Soil in Shanxi Jincheng,TU43
  8. Study on the Engineering Properties of Loess and the Stability of Loess Slope Along a Railway,U212.22
  9. Research on Marine Engineering Geology Characteristic and Feasibility of Pile Foundation at the Nanpu-Caofeidian Sea Area,P751
  10. Study on Fluid-Particle-Lining Efect and Sand Liquefaction under Vibration Load of High Speed Railway,U451
  11. Research on Stability Assessment of Tunnel Rock Slope Across Dali-Ruili Railway in Section of Mount Gaoligong,U451
  12. The Design and Experimental Rearch of Disposable Catalyzer in the Process of Coal Liquefaction,TQ529.1
  13. Study on Protection Type of Loess Subgrade Slope in Zhengzhou-Xi’an Passenger Line,U213.1
  14. The Study on Stability of Banxi Slate Slope in the Huaihua Section of Changkun Passenger Transportation Railway,U442.2
  15. The Dynamic Response Analysis of Shield Tunnel on Soft Soil Foundation Exposed to High-Speed Train Vibration Excitation,U451.3
  16. The Stability Evaluation and Monitoring Technology Study for Highway Slope,U416.14
  17. Evaluation Research of Rainfall Factor on Slope Instability in Mountainous Areas in Southern of Shaanxi Province,U416.14
  18. Study on Slope Monitoring and Slope Stability Analysis for Guan Shan Expressway,U416.14
  19. Monitoring Analysis of the Stability of Zipingpu Engineering Slope under Influence of Wen Chuan Earthquake,TV221.2
  20. Experimental Study on Sudden Siltation of Open Channel in Silty Coastal Areas Due to Liquefaction,U612.2
  21. High slope steep artificial landfill Optimization of retaining structures,TU472

CLC: > Astronomy,Earth Sciences > Oceanography > Ocean Engineering > Coastal Engineering
© 2012 www.DissertationTopic.Net  Mobile