碩士 / 國立臺灣海洋大學 / 河海工程學系 / 97 / In Taiwan, the natural of coastal slope is vulnerable, and will be induced landslide of coastal slope by seasonal typhoons induced rainfall intensity and wave loading. Because the coastal structures located between land and sea, and the complex geological conditions, due to seabed instability or slope damage, usually caused by varying degrees of disaster damage in nearshore coastal areas. Most of past research is focus to explore the stability analysis of seabed. In general, the coastal stability of slope should be considering the wave, tidal and geological conditions. The purpose of this study is to evaluate the liquefaction range of the seabed by wave loading and the impact of slope stability at Taiwan sandy coastal areas.
The numerical program of Geo-Studio develop by Calgary university is adopted to establish a 2-D analysis model used to simulate the landslide behaviors. The different slope geometric models, and different outside the marine environment and geological conditions are considered. Combined with the liquefaction potential evaluation method by Chen and Yang (1996) to obtain the region of seabed liquefaction potential, the numerical programs use to simulate the different tide induce liquefaction of slope stability analysis. The typhoon waves and the different relative density conditions were considered to evaluate the effect of tide range on the slope stability. And the effect parameter factors of seabed slope liquefaction stability were discussed to understand the influence of the seabed liquefaction to the coastal slope stability. It could be provided with the slope stability of coastal region and the reference of safety assessment of nearshore engineering practice.
| Identifer | oai:union.ndltd.org:TW/097NTOU5192095 |
| Date | January 2009 |
| Creators | Yang-Ting Hsu, 許雅婷 |
| Contributors | Lien -Kwei Chien, 簡連貴 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 136 |
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