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題名 | 應用HEC-GeoRAS淹水模擬之研究--以南湖溪為例=Application of HEC-GeoRAS to the Simulation of Flooding--Na-Hu River as an Example |
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作者 | 謝平城; 湯嘉芸; 林俐玲; | 書刊名 | 水土保持學報 |
卷期 | 40:4 2008.12[民97.12] |
頁次 | 頁455-466 |
分類號 | 436.124 |
關鍵詞 | 淹水模擬; HEC-GeoRAS模式; 南湖溪; Simulating flooding; HEC-GeoRAS model; Na-Hu river; |
語文 | 中文(Chinese) |
中文摘要 | 本研究為使用HEC-GeoRAS進行南湖溪河道泥砂清淤、加高堤岸或上游設置滯洪壩等整治工程措施,交互搭配進行工程規劃設計後,模擬25年、50年及100年重現期淹水之範圍、深度,了解集水區整治工程之防災減災效果。不考慮河流及水池部分,河道清淤整治後洪氾區減少之面積約佔整治前洪氾面積依序為15%、10%及10%;河道清淤及加高堤岸後洪氾面積之改善依序為31%、30%及25%;河道清淤整治及上游設置滯洪壩後洪氾面積之改善依序為15%、10%及10%;河道清淤整治、上游設置滯洪壩,及加高堤岸後,洪氾區減少之面積約佔整治前洪氾面積之改善依序為31%、30%及25%。 |
英文摘要 | The authors apply HEC-GeoRAS model to simulate the flooding in Na-Hu river when the practices measure such as the channel dredging, increasing height of embankment, establishing an upstream detention dam and so on, which were combined to simulate the domain and the depth of flood return periods of 25, 50 and 100 years in Na-Hu river. All scenarios did not take rivers and ponds into account. The results show that: (1)domain reduction efficiency of one practice with the channel dredging is 15%, 10% and 10%, respectively; (2)the efficiency of another practice with the channel dredging and increasing height of embankment is 31%, 30% and 25% ; (3)the efficiency of another practice with the channel dredging and establishing a detention dam is 15%, 10% and 10% ; the efficiency of the other practice with all conditions is 31%, 30% and 25% separately. |
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