頁籤選單縮合
題 名 | 德基水庫淤積模擬之研究=Study on the Sedimentation Simulation for Deji Reservoir |
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作 者 | 謝平城; 廖昌毅; 梁家柱; | 書刊名 | 水土保持學報 |
卷 期 | 42:1 2010.03[民99.03] |
頁 次 | 頁83-97 |
分類號 | 443.96 |
關鍵詞 | 德基水庫; 懸浮載; 水庫淤砂; CFX11; NETSTARS; Deji Reservoir; Suspended load; Reservior silting; |
語 文 | 中文(Chinese) |
中文摘要 | 德基水庫為臺灣水力發電體系中相當重要的一站,本水庫除增進全國發電系統的效率外, 另還有調節水量、灌溉、給水及休閒遊憩等經濟效益。但歷經數年使用,水庫常見問題逐漸浮 現,本研究即以此為例進行探討。首先,收集水庫集水區各支流歷年淤積情形,並找出縱橫斷 面之淤積量變化,探討其底床改變對水庫壽命之影響。本研究主要採用兩種模式模擬懸浮載的 運移及底床高程的變化,其中NETSTARS 模式主要用於模擬底床高程變化,其結果顯示淤積 主要由主流上游開始向下游淤積,到民國156 年時,約一半的庫區幾近淤滿。另外CFX 11 模 擬懸浮載移動過程所得到結果則顯示面對洪峰後所帶入庫區的大量懸浮載,水庫相關水工設施 並無法有效排淤,且於庫底緩慢沉降,此現象值得水庫管理單位注意。 |
英文摘要 | Deji Reservoir is one of the important hydraulic power stations in Taiwan. It enhances the efficiency of power and offers irrigation, water supply and recreation. For many years, the reservoir has more management problems after operating. In this research, we discuss reservoir of sedimentation and simulate the sediment distribution after typhoon events. At first, reservoir-bed survey data must be collected for the analysis of sedimentation change to discuss the lift of reservoir. And then, two models NETSTARS and CFX11 are used to simulate suspended load and elevation change in riverbed. The result indicates half capacity of reservoir will have silted up in 2067. In addition, CFX 11 model displays more suspended load with flood peak and typhoon because the reservoir design do not discharge the bottom of silt. The administration should be cautious of this problem. |
本系統中英文摘要資訊取自各篇刊載內容。