2004-12-162024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/661158摘要：中文摘要 台灣特有之地質、地形及氣象條件符合易誘發土石流的要素。行政院農委會水土保持局自民國80年起進行土石流潛勢溪流調查，民國85年公佈全省485條土石流潛勢溪流；921地震後增列全省722條土石流潛勢溪流；民國91年桃芝颱風後，完成全省1420條土石流潛勢溪流調查。近年來經由水土保持局、九二一重建委員會、縣市政府及當地居民的努力，臺灣地區之土石流發生已有逐年降低之趨勢，但歷經七二水災及艾利颱風後，地形條件又再度變動，且保全對象亦有所更迭，因此在考慮保全對象及土石流發生條件之可能變動，定期辦理土石流潛勢溪流後續調查與演變趨勢觀測，及土石流潛勢溪流資料持續維護更新，成為現階段土石流災害防救業務中極為重要之經常性基礎工作。 本計畫首先探討國內外土石流潛勢溪流資料公開與更新方式，並進行各縣市政府提報之有疑義之土石流潛勢溪流現勘與評估。而後針對國內之土石流潛勢資料研擬一套土石流潛勢溪流資料更新與回饋機制，包含「土石流潛勢溪流現地勘查評估作業之判定基準」、「地方政府回報新增土石流及非土石流潛勢溪流機制基準」、「土石流潛勢資料常時維護作業基準」、「土石流潛勢資料常態更新作業基準」、「既有<br> Abstract: Due to the geological, topographical, and weather conditions, Taiwan is prone to debris flow hazards. The Bureau of Soil and Water Conservation, Council of Agriculture has conducted the investigations of debris flow torrents since 1991. In 1996, a total number of 485 potential debris flow torrents were published. In 1999, the Chi-Chi earthquake hit central Taiwan and induced severe landslides, a reconnaissance for potential secondary debris flow hazards was conducted with 722 potential debris flow torrents listed. After typhoon Toraji in 2002, the re-investigation was conducted for up-dating of the debris flow torrents information, and a total number of 1420 torrents were listed. Due to the variation of geomorphological conditions and frequent severe weather conditions, it is essential to perform the follow-up investigation of the debris flow torrent conditions constantly and properly maintain and up-date the fundamental data base of the potential debris flow torrents. The objectives of this project are to review the methods of up-dating and publicizing hazard potential information and to device a mechanism for up-dating, maintaining, and publicizing of the debris flow hazard potential information. Field investigations of 61 debris flow torrents were performed and data base was up-dated. The operation procedures for publicizing of debris flow potential information were proposed, and the mechanism for up-dating and maintenance of data-base was also proposed based on the operation procedures. The results of this project would provide supports for decision-making related to debris flow hazard mitigation. Keywords: debris flow, up-dating of potential information, publicizing of potential information, hazard mitigation.土石流潛勢資料更新維護潛勢資料公開作業災害防治debris flowup-dating of potential informationpublicizing of potential informationhazard mitigation.