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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/34773
標題: | 颱風對溪頭神木坑斷面變化之調查研究 A Study on Cross-section Changes in Shen-Mu Crack of CHI-TOU |
作者: | Jen-Chieh Hou 侯仁傑 |
指導教授: | 陳信雄 |
關鍵字: | 土石流,土石流坑溝,縱斷面測量,橫斷面測量, debris-flow,debris-flow crack,horizontal sectioned measurement,vertical sectioned measurement, |
出版年 : | 2006 |
學位: | 碩士 |
摘要: | 民國88年發生的921地震在台大實驗林溪頭集水區造成大面積的土層鬆動,加上近年來數個颱風的侵襲,使得原本狹小的野溪坑溝變化劇烈,嚴重危害下游居民的身家安全。
本研究乃針對溪頭神木坑,選擇量水堰上游適當坑溝段進行一系列調查。主要工作為颱風前後坑溝縱橫斷面之測量,分析坑溝內土石的淘刷與堆積之位置以及對坑溝內工程構造物的效益加以評估,並對坑溝內土石粒徑分佈的狀況作通盤考量,以期對今後土石流災害的預測與對策有所助益。 Large-scale of stone in CHI-TOU watershed in NTU experimental forest became flexible after the 921 earthquake in 1999, which caused serious disaster in the central section of Taiwan. Flexible soil leads to expand the narrow holes and small ditches. The expansion of the cracks were worsened by the attacks of several typhoons and therefore have become highly harmful to the downstream communities. The main purpose of this study is to investigate on debris-flow crack from top reaches to the bottom in the Shen-Mu crack of CHI-TOU. By measuring the horizontal and vertical sections before and after typhoons in July 2004, Oct 2004 and Oct 2005, and analyzing the mass movement in the crack, the effect of the projected constructions in the crack will be assessed. Especially taking the advantage of comprehensive considerations on the particle-size distribution, it is helpful for the prediction and resolution of future debris-flow disasters. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/34773 |
全文授權: | 有償授權 |
顯示於系所單位: | 森林環境暨資源學系 |
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