National Taiwan Ocean University Institutional Repository:Item 987654321/24203
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28607/40644
造访人次 : 4724711      在线人数 : 328
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/24203

题名: 不連續變形分析法於礫石型土石流之應用
Modeling of Granular Debris Flow Using Discontinuous Deformation Analysis
作者: 蕭沛佳;顧承宇;謝平城
贡献者: NTOU:Department of Harbor and River Engineering
國立臺灣海洋大學:河海工程學系
关键词: 不連續變形分析法;礫石型土石流
Discontinuous Deformation Analysis;Granular Debris Flow
日期: 2011
上传时间: 2011-10-20T08:10:41Z
出版者: 水土保持學報
摘要: 摘要:台灣中部及東部地區多礫石層崩積土之分佈,過去眾多災害案例顯示,礫石型土石流係為主要之土石流災害。本研究以 DDA 建立模擬土石流運動之理論與程式架構,進行土石流數值模擬分析,同時考慮形成土石流之重要因子,探討坡度、摩擦角及水位等不同的變因對土石流的影響,並進一步應用於研究土石流之啟動機制。分析結果顯示,DDA 對於土石流運動之模擬有不錯之適用性,惟對於模擬土石流中水的影響方面,需再深入研究以獲得更接近現地狀況之力學行為。
The hazards of debris flow triggered by earthquake activities and heavy rainfalls occur frequently in Taiwan during the past decades, especially after the 921 earthquake in 1999. Based on the observation from colluviums of conglomerate formation in central and eastern Taiwan, it is found that the granular debris flow is the major type in these areas. The Discontinuous Deformation Analysis (DDA) is therefore adopted to study the initiation and mechanism of the granular debris flow.
Verification and application examples were provided to demonstrate the applicability of the revised DDA method. In addition, the influence of several important factors such as slope, friction angle, and water depth (or flow discharge) on the initiation of the granular debris flow were studied. The results obtained show that: (1) the DDA method can be a useful tool to model the initiation and mechanism of the granular debris flow under different situations, and (2) the hydrodynamic mechanism of mixed fluid and solid particles needs to be further studied.
關聯: 14(1), pp.29-47
URI: http://ntour.ntou.edu.tw/handle/987654321/24203
显示于类别:[河海工程學系] 期刊論文

文件中的档案:

没有与此文件相关的档案.



在NTOUR中所有的数据项都受到原著作权保护.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈