應用水理分析檢討台東美佐呂溪之整治措施

Applied Hydrology Mathematical Calculation to Examination Reconstruction Project on Taitung Meizuolyu Stream

許中立(Chung-Li Hsu) ； 徐弘明(Hon-Mnin Hsu)

《坡地防災學報》 8卷2期 (2009/07) Pp. 19-28

https://doi.org/10.29995/JSHR.200907.0002

摘要

政府每年於重大颱風災害過後都投入不少經費辦理掰災後復建工程之規劃、設計與施工，避免災害再度發生或擴大其影響。然礙於規劃設計時間的急迫性以及搶修施工期短，是否都能夠周延妥適確有必要再加以審慎檢討。本研究以台東縣成功鎮美佐呂溪為例，採現地勘查方式以瞭解工程構造物施設後之狀況，並根據所蒐集之水文資料以美國陸軍工程團水文工程中心所研發之水理演算模式HEC-RAS進行各斷面之分析檢討。根據調查分析結果，美佐呂溪所施設的整治工程多能達到其原先設定之目標，且相關工程在設計時也能考量對環境生態的影響，惟仍有部份區域因斷面束縮流速較快須加強改善以避免災害發生，應予以必要之補強或修復。

關鍵字

颱風災害 ； 復建工程 ； 水理演算

並列摘要

After disaster occurring due to succession typhoons, government often invests the funds promptly within shortest time of contingency to handle the planning and design project of taking precautions against natural disaster. Because the projects were generally planned without many investigations, so it is necessary to probe into the project effect and reconstruction security behind constructed. In this study, we chose the Meizuolyu stream watershed of Taitung County as a research area to realize the situation in the stream before and after setting up the constructions by inspecting and surveying, and according to hydrology analysis and topography measured combine to carry on hydrology mathematical calculations. We adopted HEC-RAS software to make hydrology mathematical calculations and according to the result to examine whether the position of each construction was proper and submit the complete of mend suggestion finally.

並列關鍵字

Typhoon disaster ； Reconstruction works ； Hydrology mathematical calculation