南投縣洪水災害規模設定及其境況模擬研究

Study on Flood Disaster and Scenario Simulation in Nantou County

彭思顯(Szu-Hsien Peng) ； 蔡誌崇(Chih-Chung Tsai) ； 曾智弘(Zhi-Hong Zeng)

《建國科大學報》 27卷2期 (2008/01) Pp. 1-16

https://doi.org/10.6995/JCTU.200801.0001

摘要

本研究依據南投縣過去歷史淹水事件及前人研究，進行洪水災害之境況模擬。並使用二維數值模式FLO-2D作爲模擬淹水之工具，該模式能夠模擬洪水在真實地形之流動速度與深度，其所獲得之資料可用來推估可能的災害損失，以提供防災業務之參考。本研究選取南投縣三處案例分別爲南投市區貓羅溪沿岸、竹山鎮東埔納溪及水里鄉郡坑溪等地區，並以日雨量500mm爲災害規模設定，進行境況模擬，並依照水利署常用之方式推估可能洪災損失，最後提出相關結論與建議。

關鍵字

FLO-2D ； 境況模擬 ； 洪水災害

並列摘要

The present study proposed several scenario simulations of flood disaster based on the previous researches and historical flood events in Nantou County. We employed a 2D numerical model (FLO-2D) which can compute the velocity and depth on the two dimensional actual terrain to simulate floods. Meanwhile, the calculated data are used to estimate the possible damage of flood disaster. The results also can be the reference for the disaster prevention. This study selected 3 cases including Mao-Luo Creek, Dong-Pu-Rui Creek and Jun-Keng Creek watersheds, which were simulated and used 500mm rainfall for a day as the simulated condition. Besides, the flood disaster loss was estimated by these results of simulations. The estimation method is suggested by Water Resources Agency. Finally, the conclusions and perspectives are presented.

並列關鍵字

FLO-2D ； scenario simulation ； flood disaster