蘇明道2006-07-252018-06-292006-07-252018-06-2920032003-07-31http://ntur.lib.ntu.edu.tw//handle/246246/10759Taiwan suffers often from natural catastrophes such as earthquakes, typhoon, and flood, etc. due to her geographic location and fragile geological condition. These hazards usually cause casualties and major loss of assets especially in area of high population density or region of intensive economic activities. The government spend huge budget for disaster mitigation. The investment of disaster mitigation should be proposition to the risk of the area so that adequate economical efficiency can be maintained. The regional damage assessment then becomes an important issue for decision makings in disaster management. The objective of this project is to establish an algorithm for regional flood damage assessment. Damage-inundation relationships for different land use types, such as residential, industrial, commercial, agricultural and public utility, were constructed using property loss records in historical flood events. The watershed of Keelung River is used as study area for this project. Related spatial information and social economic database for regional flood damage assessment, such as population, land use, commercial and industrial activities, were set up. The Inundation maps from simulation of events with different return periods were overplayed with the social-economic database for regional flood damage assessment. The average annual loss due to flood for the study area was assessed through the relationship of regional flood damages and flood occurrence probabilities of the related events. This average annual loss can be used in the with-without analysis for project evaluation on alternative flood control measures.因為地理位豐、氣候以及地形之關係，台灣一直是天然災害頻傳之地區，加上近年來台灣工商經濟發達及生活水率提昇，災害發生時常造成相當嚴重之生命財產之損害，政府常面臨民間要求進行災害防減之工程規劃，但是政府財源有限，無法一次滿足所有防災工程之需求，為能有效利用有限資源，優先處理危險度高之區域，以使防災之投資與其所能達成之效益相擬，因此區域災害危險度之評估是防災決策上相當重要之工作。所謂危險度是指某區域災害損失與其姿生機率之乘積，為有效評估災害危險度，必須先能快速準確的估算各種災害此度下之區域損失程度，本計劃乃是在建立洪災之區域淹水損失之模式。 洪災之損害評估涉及大量之地理分布資料，如地形、交通及人口工商業等社會經濟資料，區域性洪災淹水損失之推估模式需具備空間分析能力，本計劃利用地理資訊系統作為資料建置、管理與分析之工具，建立與洪災研討相關之地理資料庫，並據以建立區域性之洪災災損評估模式。 於洪災災害損失評估模式中，大致將損失項目區分成農業損失、住宅損失、工商業損失，根據不同產業經濟活動特性，建立各類型之淹水損失曲線，俟其淹水損失曲線、社會經濟資料等資料建置完整，配合網格估算方式，雅估洪災區域在不同重現期之暴雨事件下，所產生之損失程度大小。application/pdf9810732 bytesapplication/pdfzh-TW國立臺灣大學生物環境系統工程學系暨研究所FloodDamage AssessmentRiskWith-without analysis洪災災害損失評估危險度地理資訊空間資訊[SDGs]SDG15reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/10759/1/912625Z002012.pdf