| 姓名 | 曹英明(Ying-Ming Tsao) | 電子郵件信箱 | E-mail 資料不公開 | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 93學年第2學期 | |
| 論文名稱(中) | FLO-2D模式於土石流流況模擬之應用 | |||
| 論文名稱(英) | APPLICATION OF FLO-2D MODEL ON DEBRIS-FLOW SCENARIO SIMULATION | |||
| 檔案 |
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。 |
論文使用權限 | 校內外完全公開 | |
| 論文語文/頁數 | 中文/112 | |||
| 摘要(中) | 台灣地區位處歐亞板塊和菲律賓海板塊之交接處，地質脆弱，加上位於西太平洋颱風路徑上，夏秋兩季常有颱風及豪雨發生，高強度的降雨常造成地表土壤沖刷流失或山坡地崩塌，九二一地震之後，更使得原本破碎的岩層易發生崩塌，致使土石流發生之機率比地震前大許多。尤其近年來桃芝、賀伯、敏督利等颱風侵襲，所挾帶的豪雨造成山區多起土石流災害，且皆有傷亡傳出，故土石流災害防治為現今之重要課題。 由於土石流災害發生時現地採樣與試驗取得相關參數較為費時且工程浩大，本研究將利用FLO-2D二維洪水與土石流數值模擬套裝軟體，配合雨量資料、數值地形資料模擬土石流發生之流動情況，包含：流動深度、流動速度及堆積情形，配合已蒐集之現地調查結果，分析數值模擬之正確性。而土石流發生後之流動範圍及災害之發生，深受土石流之局部溪流地形、流變參數和流量所影響，故本研究將改變輸入之參數進行敏感度分析，討論在不同體積濃度及運動方程式之情況下對土石流流動情況之改變。 本研究以南投縣水里鄉二廍坑溪及信義鄉神木村出水溪作為研究對象，並使用賀伯颱風及桃芝颱風二次降雨事件之降雨量為依據，探討土石流之最大深度及堆積範圍，經由模擬結果及數據比對，結果大致符合。經由FLO-2D軟體之數值模擬可初步了解土石流災害發生時可能影響之區域及情形，期能減少災害所造成失損害；而經由估計之流出土方量，可作為土砂防治工程之參考，並在有限的野外調查資料下，提供一套有效之分析方式。 | |||
| 摘要(英) | Taiwan is located
between Eurasian plate and Philippines plate, and its geology is
fragile. Moreover, because it is also on the path of typhoon in West
Pacific, there are many typhoons and downpour in Taiwan. The heavy
rainfall often cause soil loss or slope failure. After the 921
earthquake, the rock stratum becomes more fragile so that it may
collapse more easily, and the debris flow is easy to occur. The recent
typhoons Herb, Toraji and Mindulle, not only bring the heavy rainfall
and cause many debris flows but also threaten people’s life. Therefore,
the issue of preventing debris flows gain more and more
importance. Because attaining the parameter of field test and test of occurrence takes time and has complicate procedures, this study will use FLO-2D software (two-dimensional model to simulate debris flow and flood)、rainfall、DTM and the collected data to analyze the accuracy of the simulation.Including depth、velocities and volumetric sediment. This study using the data of Erh Pu Keng and Chu Shui river in Nantou county.And using rainfall in typhoon Herb and Toraji to discuss maxiumu depth and maxiumu velocities on debris-flow. Base on the result of this study, we expect that the damage caused by debris flows will be decreased, and using limited data of field observations to provide an effective analyzed method. | |||
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