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  • 學位論文

網格解析度對淹水模擬影響分析

Effects of Grid Resolution on Inundation Simulations

指導教授 : 葉一隆

摘要


本文利用淹水模式模擬暴雨期間之淹水情形,地表坡度直接影響地表逕流之漥蓄與流向,而數值計算之精度取決於網格解析度。本研究利用FLO-2D模式模擬台東縣境內之利嘉溪流域子集水區200年重現期一日降雨之淹水範圍及淹水深度,分別採用40 m × 40 m、80 m × 80 m、120 m × 120 m、160 m × 160 m及200 m × 200 m等5組網格解析度進行模擬,以分析網格解析度對淹水模擬結果之影響,模擬結果顯示區域淹水30公分以上之時,網格解析度愈高淹水網格數目及淹水面積有增加之趨勢,網格解析度愈高愈能顯示局部低窪之地形變化,選擇愈高網格解析度,則模擬淹水所需計算時間遞增。

並列摘要


This study used inundation model to simulate flooding situation during rainstorm period. The surface slope directly influences depression storage and flow direction of surface runoff. But precision of the numerical computation is decided by grid resolution. This research using the FLO-2D model simulates flooding ambit and depth with 200 year return period in one day raining within sub-watershed in Lee-Chai Creek, Taidong County. Five types of grid resolution, 40 m × 40 m, 80 m × 80 m, 120 m × 120 m, 160 m × 160 m, and 200 m × 200 m were conducted to simulate inundation situation that purpose was to answer the impact of ambit and depth on grid resolution. The analytic results showed the flooding grid numbers and area increased in higher resolution conditions during flooding depth greater than 30 cm. This suggested higher grid resolution can reveal the local low-lying terrain change, but higher grid resolution had progressively increased time to compute flooding situations.

參考文獻


33.江明晃,2006,台中市區數值地形解析度對淹水模擬結果之比較,國立台灣大學生物環境系統工程所,碩士論文,台北,82頁。
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被引用紀錄


張丞霄(2014)。林邊溪於莫拉克颱風潰堤之淤泥堆積模擬〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/NPUST.2014.00200
莊舒喬(2009)。龍鑾潭水庫潰壩分析及水質模擬之研究〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/NPUST.2009.00133
謝宗霖(2013)。都會區淹水模式之比較與應用〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2013.10386
陳加榮(2011)。都市化與氣候變異對都會地區淹水之衝擊評估-以台中都會區為例〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2011.01498
陳嗣祖(2016)。淹水潛勢區之風險分析〔碩士論文,國立交通大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0030-2212201712081316

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