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研究生:曹家瑋
研究生(外文):Chia-wei Tsao
論文名稱:流域豪雨洪水演算模式之研究
論文名稱(外文):A Study of Basin Storm-Flood Computational Model
指導教授:蔡長泰蔡長泰引用關係
指導教授(外文):Chang-tai Tsai
學位類別:碩士
校院名稱:國立成功大學
系所名稱:水利及海洋工程學系碩博士班
學門:工程學門
學類:河海工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:75
中文關鍵詞:流域豪雨洪水演算模式
外文關鍵詞:Basin Storm-Flood Computational model
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為減免豪雨洪氾損失,流域內會佈置各種防洪設施。但隨著地形地貌會改變,也會治理改善河道,故需要發展能演算全流域之地表淹水與河系洪流現象,以分析各項防洪設施之功能,及研擬改善措施。
本研究依據地文性淹排水模式(Physiographic Drainage-Inundation model,PHD-model)及明渠網路變量流隱式模式(Channel Network-Unsteady Flow Implicit simulation model,CN-UFI model)之輸入資料需求與輸出資料演算能力,成為流域豪雨洪水演算模式(Basin Storm-Flood Computational model,BASF-model)用以模擬豪雨洪颱期間,流域內河系洪流現象。
依流域地形地貌水系分佈及交通系統佈置流域之演算格區,並將河系分群佈置後,流域豪雨洪水演算模式可依流域內各雨量站的雨量資料、河口海域潮位歷線及有洩洪控制之水庫洩洪歷線便可演算豪雨期間之河系洪流現象。
本研究以淡水河流域為研究區域,模擬2003年艾利颱風、2004年泰利颱風兩個颱洪事件河系洪水過程,由新海橋、中正橋、大直橋及五堵水文站之水位歷線與實測資料比較,顯示流域豪雨洪水演算模式具有良好的模擬演算能力及演算效率。由演算結果分析顯示淡水河二重疏洪道可有效降低主河之洪水位,有良好的減洪效果。本模式可進一步應用於規劃防洪計畫,分析防洪設施之功能。本模式演算96小時的淡水河流域颱風豪雨現象需要的計算機時間為112分鐘,應可進一步結合雨量預報模式及暴潮預報模式發展具有即時預報能力的洪水預報模式。

關鍵字:流域豪雨洪水演算模式
To reduce the property loss resulting from heavy rain,a variety of flood defense structures will be set in the basin.Considering the constant changes in the topography,to regulate the river channels we need to develop a model which can simulate inundation and unsteady flow in a basin to analyze all capabilities of flood defense structures,and assess different measures.
In this study,the input and output data of a Physiographic Drainage-Inundation model,PHD-model and a Channel Network-Unsteady Flow Implicit simulation model are turned into a Basin Storm-Flood Computational model,BASF-model to simulate unsteady flow in river systems in storm flood periods.
The simulations between storm flood periods are based on grid regions ,which were set according to land forms,topography,river system distributions and traffic systems.Then,gathering rainfall information from the rainfall stations,sea level data and flood discharge hydrograph from the reseviors the simulation can be performed
Tamsui basin is the studying area,and two typhoons events which include Elly typhoon in 2003 and Talim typhoon in 2004 are simulated.It can indicated that BASF-model has great modeling capabilities and performs effective calculations by comparing modeling stage hydrographs with observation data.By analyzing the results,it can show that Er-Chung diversion spillway has the ability to decrease the flood stage.This model simulates a total of 96 hours of the Elly typhoon in 112 minutes and it can combine a rainfall forecasting model with a tide forecasting model to become a flood forecasting model with real time forecasting capabilities.
Keyword:Basin Storm-Flood Computational model
中文摘要 I
Abstract II
目錄 III
圖目錄 V
表目錄 VIII
第一章 緒論 1
1-1 研究動機與目的 1
1-2 文獻回顧 1
1-3 研究方法 4
1-4 組織架構 4
第二章 流域豪雨—洪水演算模式之建立 6
2-1 地文性排水淹水模式 6
2-2-1基本方程式 7
2-1-2數值方法 8
2-1-3模式之建立 9
2-2 明渠網路模式 12
2-2-1基本方程式 12
2-2-2數值方法 14
2-3 含攔河堰河段之數值演算係數 23
2-4 流域豪雨—洪水演算模式 25
第三章 模式之測試與驗證 28
3-1 研究區域概況 28
3-2 演算佈置 29
3-2-1演算範圍 29
3-2-2淡水河流域格網佈置 29
3-2-3分群方式及斷面配置 32
3-2-4疏洪道入口堰堰流公式 33
3-3 模式測試與驗證 36
3-3-1演算條件 36
3-3-2洪流演算之上游邊界條件及討論 42
3-3-3艾利颱洪演算結果與比較 46
3-3-4泰利颱洪演算結果與比較 50
第四章 模式之應用與討論 54
4-1 疏洪道分洪功能分析 54
4-2 水位—流量率定曲線 60
第五章 結論與建議 63
5-1 結論 63
5-2 建議 64
參考文獻 65
附錄A 變量流明渠網路模式水路計算架構 70
附錄B 節點水位方程式之係數 74
謝誌 76
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