運動波模式應用於一維土石流演算之研究

Application of Kinematic Wave Model to 1-D Debris Flow Routing

詹錢登(Chyan-Deng Jan) ； 陳晉琪(Jinn-Chyi Chen) ； 黃國文(Gwo-Wen Hwang)

《中華水土保持學報》 27卷2期 (1996/06) Pp. 119-126

https://doi.org/10.29417/JCSWC.199606_27(2).0004

摘要

本文將土石流視爲連續且不可壓縮之固、液混合體之流動，並以賓漢流變模式來模擬其流變特性，建立一適用於泥性土石流流經寬廣渠床上之運動波演算模式。將本模式配合渠道上游土石流流量入流歷線，由牛頓－雷普森（Newton-Rapson）解法求解泥流在固定坡度與漸變坡度下之流動情形，其結果並與動力波模式演算結果相比較。整體而言，運動波模式可有效的模擬泥性土石流流動情形。

關鍵字

土石流 ； 運動波模式 ； 賓漢流變模式

並列摘要

Debris flow is treated as an incompressible continuum and its rheological behavier is described by the Bingham model in this paper. A kinematic-wave routing model for debris flow in a wide channel is developed and applied to analyze debris flow through smooth inclined planes with constant slope and gradually varied slope, respectively. The numerical results obtained from the kinematic-wave model (KWM) are also compared with those obtained from the dynamic-wave model (DWM). The comparision shows that the kinematic-wave model can efficiently simulate the routing of debris flow.

並列關鍵字

Debris Flow ； Kinematic Wave Model ； Bingham Rheological Model