Flood Causality and Mitigation Strategies for the Dongshan-River Watershed / 冬山河沿岸集水區洪災發生因果關係及防治對策之研究

碩士 / 國立臺灣海洋大學 / 河海工程學系 / 94 / This study analyzes samples collected from year 1984 to 2004 in the basin area along the bank of the Dongshan River. Referencing the studies and opinions of experts on related documents and analyzing and verifying the collected information, six indicators considered critical and influential to the events were identified in phase-one.
Classification of the indicators were analyzed after normalization, definition, and grading. Subsequently, the performance as a whole was evaluated applying the Rough sets theory. According to the 13 decision-making rules concluded from the D-Reduct analysis, historical events and potential events were further incorporated and analyzed to create a systematic database such as performance tables of integrated critical indicators and integrated performance evaluation indicators.
Through the establishment and development of the abovementioned detailed systematic databases, an effectively simple and precise decision-making rule can be obtained. It clearly indicates factors that cause accidents and damage during typhoons or heavy rain and the conflicting relationship between urban transition and the consumption of resources.
According the analysis results, four groups of possible influential factors on the damage caused by disasters were organized. Finally, damage causing criteria and consequences of the disaster contribute to the decision-making rules of each group. From the degree of the damage in each group integrated preventive and remedial strategies for flood and land management can be proposed. This can help the decision-maker and personnel predict and respond to possible problems in their responsible areas as soon as possible.
In summary, through the establishment of integrated and detailed databases and the application of the related theory, this study provides a simple and rapid way to obtain required information. Furthermore, this study employs reasonable regional analysis information for theory validation, to reduce damage from the disaster via non-engineering means.

Identiferoai:union.ndltd.org:TW/094NTOU5192048
Date January 2006
CreatorsTian-Yao Huang, 黃田堯
ContributorsTzay-An Shiau, 蕭再安
Source SetsNational Digital Library of Theses and Dissertations in Taiwan
Languagezh-TW
Detected LanguageEnglish
Type學位論文 ; thesis
Format141

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