土石流流動與影響範圍之計算模擬

Estimation of Debris Flow Potential Hazard Area by Numerical Modeling

劉格非(Ko-Fei Liu) ； 楊茂榮(Maw-Rong Yang)

《地工技術》 74期 (1999/08) Pp. 47-56

https://doi.org/10.30140/SG.199908.0004

摘要

隨著台灣山坡地之開發，土石流之災害危機將快速上升。因此將有土石流潛在危險之地區劃分出來是一項重要工作，但要推估土石流之影響範圍，如何計算其流動能力是一項重要因子，本文利用非線性之本構關係與流體守衡定律，得出一套可利用於現場之數值模式，模式中各參數之檢定方法亦可利用簡易之現場測量法來推估。室內試驗與模式驗證非常吻合。

關鍵字

土石流危險區 ； 數值模擬

並列摘要

The development of slope land in Taiwan is rapidly growing, so is the potential hazard for debris flow. Therefore, identification of these potential hazard area will be an important task. The flowbility of debris flow is a control factor in estimation these area. This paper develops a numerical model utilizing nonlinear constitutive relationship and fluid conservation laws. Model can be used in field and the values of all parameters used in the model can be obtained through simple in situ tests. Results from numerical modeling fits those from flume tests very well.

並列關鍵字

debris flow hazard zone ； numerical modeling