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題 名 | 大甲溪流域敏督利颱洪災因初探與新思維治理策略之研究=Study of New Thought on River Management Policy about the Disasters Caused by Mindule Typhoon of Da-Chia River Basin |
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作 者 | 陳文福; 謝伶娟; 彭壽奇; | 書刊名 | 水土保持學報 |
卷 期 | 40:3 2008.09[民97.09] |
頁 次 | 頁329-342 |
分類號 | 434.273 |
關鍵詞 | 新思維; 治理策略; 國土綜合利用管制; 水土保持; 遙測; 地理資訊系統; 自然生態工法; New thought; Management policy; National land comprehensive use; Soil and water conservation; Remote sensing; Geographic information system; Natural ecological engineering approach; |
語 文 | 中文(Chinese) |
中文摘要 | 台灣因位處板塊擠壓帶上,以致地形陡峭、地質脆弱且河短流急,加上因位居颱風路徑上, 降雨大且集中又具時空變異性,本易導致其中下游地區遭受水土災害,惟其災害程度與規模尚 不甚大。但1999 年發生九二一大地震時台灣中部地區岩層多被震鬆,甚至發生大量崩塌,使 得河川發生災害之潛勢增高,大甲溪流域亦發生大量崩塌。其後2001 年之桃芝颱風與2004 年 之敏督利颱風更因豪雨而發生嚴重之土石流災害,除對台灣之國土綜合利用管制、水土保持、 河川治理及防救災工作帶來重大之衝擊外,亦凸顯出我國以往在河川治理策略上之一些問題。 本研究乃針對大甲溪流域自2001 年桃芝颱風後陸續發生土砂災害之重要因素,研擬未來 河川治理新的因應策略。先由文獻回顧以了解過去治理之情況,再以水文分析統計與圖資比對 分析,探討大甲溪在敏督利颱風時發生災害之主要原因及其所造成之內外環境問題,並針對地 文與水文環境惡化所引發之問題提出新的思維方向及未來應加強之治理策略。 針對上述問題及災害原因之分析與討論,得知未來大甲溪之治理除配合中央之國土復育策 略外,外在問題方面應有以下之新思維:儘速以遙測科技結合地理資訊系統建置集水區整體之 基本資料、規劃建置現代化之水文觀測設備;內在問題方面之新思維:除應視河川之水文、水 理、土砂生產特性、災害主因等採因地制宜處理外,必須建立流域整體治理及管理機制、建置 防洪預警系統、加強高含砂水流行為模式之研究及統一訂定自然生態工法之設計準則等措施。 |
英文摘要 | Being located on the zone of plate compression, the topography is steep, geology is fragile, rivers are short and flows are speedy. Furthermore, being located on the path of typhoon, the rainfall are heavy and intense and the midstream and downstream areas always suffer from the regular disasters of water and soil. But during the earthquake-921 occurred in 1999, there were some giant landslides in Ta-Chia River. Later, the heavy rain caused by Toraji Typhoon in 2001 and Mindulle Typhoon in 2004 induced continually serious disasters of debris flow. Those disasters not only brought a lots of beats on “the restrain of national land comprehensive use”, “soil and water conservation”, “river management” and “disaster prevention and relieving” but also revealed the ignored problems in the river management policy. This research intends to study the reasons and internal-external environmental problems those caused damages by typhoon Mindulle at Dai-Chia river through document review, hydrologic analysis statistic method and photo-information contrast analysis method. And then investigate the principal disaster reason of internal-external environmental problems caused by typhoon Mindulle and bring up some suggestions based on new thought for the management strategy to improve the worsen environment problems. According to the results of analysis and discussion for the problems mentioned above, from now on, in addition to matching the national land recover policy, the management work of Da-Chia River had better include in two ways. For external problems, we should integrate the technology of Remote Sensing and GIS to fuild an overall basic database of watershed; for internal problems, besides selecting approach to deal according to the characters of river, we should construct a management and control mechanism for the whole basin, and fuild a flood prevention warning system, strengthen the study of high concentration flow and unify a natural ecological engineering approach design rule etc. |
本系統中英文摘要資訊取自各篇刊載內容。