落石運動軌跡之現地調查與模擬分析案例介紹

Case for In-Situ Investigation and Simulation of Rockfall Trajectories

紀宗吉(Chung-Chi Chi) ； 陳宏宇(Hong-Ey Chen)

《地工技術》 64期 (1997/12) Pp. 59-68

https://doi.org/10.30140/SG.199712.0006

摘要

本文藉由一個發生在台灣東北角濂洞地區的落石事件，由現場調查的結果，利用數學分析模式與電腦模擬程式，來模擬落石當時的運動軌跡。現場調查內容則包括：落石來源處與造成落石的破壞模式、落石路徑與印痕、落石的大小與形狀、運動斜坡的坡度、長度與坡面起伏情形、組成斜坡的地質材料特性等。由此軌跡與所得之相關參數，可作為將來該地區進行落石災害防治之參考。

關鍵字

落石 ； 彈跳 ； 折減係數

並列摘要

In the following paper, the result of the in-situ investigation of a rockfall event in the Lien-Tung area of Northeastern Taiwan is used to describe the simulation approach of rockfall trajectories using mathmatical models and computer program. The in-situ investigation was conducted in order to obtain parameters for the simulation. They include source locations and failure type of boulders, rockfall path and footprints, shape and size of boulders, slope inclination and length, slope surface roughness, and slope geomaterial properties. The trajectories of rockfall were back-analysed by using mathematical models and Colorado Rockfall Simulation Program. This analysis can be used as a tool to study the rockfall trajectories needed for rockfall mitigations.

並列關鍵字

rockfalls ； bouncing ； restitution coefficient