碩士 / 國立成功大學 / 海洋科技與事務研究所 / 101 / Taiwan is an island surrounded by sea. Since wave and tide always cause coastal erosion around Taiwan's coastline, it is needed to prevent it by artificial constructions. Early in the Japanese-Occupied Period, people started to build seawall to protect the coast area. From 1911 to 1971, the coastal protection increased due to economic development, population growth, polders build and the attacked by typhoon. The comprehensiveness of planning and renovating the seawalls started from 1971. Up to now, the seawalls achieve the objective of preventing coastal disasters, but they also destroy coastal environments and habitats.
In this study, Taiwan's seawalls were classified into five kinds, including appropriate designed, poorly designed, over designed, enough beach front seawalls and inland seawalls. The next step is using the run-up formula to examine the security of the five kind seawalls.
The result shows that the five seawalls all have no overtopping situation so they achieve the ability of security. If we consider the land subsidence, the Lintsoliao seawall will occur overtopping with a 50 years return period. In another case, if there is no seawall on the five coasts, it will cause over-flood and threat the resident's live. Finally, the five typical seawalls were examined the necessity and the related issues from the territorial security viewpoint.
| Identifer | oai:union.ndltd.org:TW/101NCKU5274006 |
| Date | January 2013 |
| Creators | Chien-HaoChen, 陳建豪 |
| Contributors | Hwung-Hweng Hwung, 黃煌煇 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 84 |
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