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水保技術研討會
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| 篇名 | 莫拉克後旗山溪流域內聚落孤島效應評估 |
|---|---|
| 卷期 | 2010 |
| 作者 | 楊樹榮 、 施尊穎 、 黃春銘 、 鄭錦桐 、 黃文洲 、 陳振宇 |
| 頁次 | 055-059 |
| 關鍵字 | 孤島效應 、 莫拉克颱風 、 道路阻斷 、 Landslides 、 Debris flows 、 Typhoon Morakot 、 Road clos |
| 出刊日期 | 2010 |
中文摘要
莫拉克颱風挾帶的豪雨造成南台灣及東台灣多處山崩及土石流，使得山區道路阻斷，原鄉
聚落居民也因而與外界隔絕，形成孤島狀態，災民受困其中，救難物資運達不易。有鑑於此，
本研究針對旗山溪流域內容易造成孤島之聚落進行劃定，評估聚落聯外道路受山崩、土石流及
溪底便道沖毀阻斷之可能性。本研究主要根據現地調查及GIS 技術，將研究區內的聚落圖層套
疊在土石流潛勢溪流圖層、崩塌地圖層、溪底便道圖層及道路路網圖層，以專家法建立聚落成
為孤島的評估準則，據此將聚落分為高潛勢孤島地區、中潛勢孤島地區與低潛勢孤島地區三類。
英文摘要
Landslides and debris flows induced by Typhoon Morakot resulted in the closure of the mountain road network. Tribes in mountain area were isolated due to road closure. People were besieged in the tribes and could not evacuate to safe places. On the other hand, saving goods could not also transport to the tribes. In this study, in Cishan River basin the tribes and villages easily isolated were marked out by landslides, debris flows and temporary roads GIS layers along mountain roads. Criteria used to evaluate tribes which are easily isolated or not due to road closure were developed by expert-based approach.