台灣壩體拆除決策流程建立與應用

Establishment and Application of Evaluation Procedure of Dam Removal for Decision Support in Taiwan

王筱雯(Hsiao-Wen Wang) ； 郭偉丞(Wei-Cheng Kuo) ； 郭上琳(Shang-Lin Kuo)

《中華水土保持學報》 48卷1期 (2017/03) Pp. 27-35

https://doi.org/10.29417/JCSWC.201703_48(1).0003

摘要

為評估台灣現存壩體之改善效益並降低改善後可能導致安全及生態等層面衝擊，本研究建立適用台灣壩體改善決策之七步驟流程，選取台灣中部武陵地區之有勝溪一號壩、七家灣溪一號壩、七家灣溪三號壩及七家灣溪四號壩為對象，蒐集生態環境監測與壩體現況調查資料，以安全、生態及經濟面向評估其壩體改善效益。評估結果為七家灣溪一號壩為優先改善，與前人研究一致，顯示流程具有一定可預期性，並有助決策者對於整體壩體改善作業流程之掌握。

關鍵字

拆壩 ； 決策 ； 評估流程 ； 七家灣溪

並列摘要

In order to review the effectiveness of dam removal and to develop a river management model, it is necessary to establish a suitable decision-making process for dam removal in Taiwan. This study develops a 7-step process for reducing the ecological impact and hazard risk of dam removal. Four dams located in the Wuling region were used for this research: Yousheng Creek Dam #1, Chijiawan Dam #1, Dam #3 and Dam #4. Along with river and dam surveys, Shei-Pa National Park collected ecological monitoring data over a period of decades. Such analyses allow for the ecological, economic and safety assessment of dam removal. The results of the proposed 7-step process show that Chijiawan Dam #1 is a priority spot for improvement. This finding is in agreement with prior research. This consistency over the years shows the process has a certain level of predictability. The application of the 7-step process would help decision-makers to master the whole dam removal process.

並列關鍵字

Dam removal ； decision-making ； evaluation procedure ； Chijiawan Creek