高雄市－六龜區－D009（竹林）潛在大規模崩塌區災害調查

民國98年莫拉克風災中，大規模崩塌不僅造成重大災害，也使得現有的土石流警戒、預報與應變機制面臨考驗。為了減少大規模崩塌造成之災害，行政院農業委員會水土保持局於106年度開始推動「氣候變遷下大規模崩塌防減災計畫」，冀望透過區域盤查以及問題界分析，預先規劃大規模崩塌災害處理調適工作，以強化對於氣候變遷影響因應能力。本研究針對位於高雄市－六龜區－D009（竹林）潛在大規模崩塌區進行包括地質鑽探、地球物理探測、地下水文及地中變形的儀器裝設及觀測，透過此來探討大規模崩塌變動機制及活動性，並做為集水區大規模土砂災害風險分析及調適策略研擬之依據。集水區大規模土砂災害風險分析方面，透過不同情境的設定，疊合不同災害類型的影響區位，進行大規模土砂災害的空間分佈與危害程度推估，找出集水區內土砂災害風險熱區。

關鍵字

大規模崩塌；監測；邊坡穩定分析

並列摘要

In this project, geological drilling, geophysical prospecting, subsurface hydrological and deformation monitoring equipment installation and monitoring were conducted in the Kaohsiung- Liugui-D009 (Julin) potential large-scale landslide area. Based on the conducted investigation, the mechanism and activity of the studied area were discussed for sediment disaster risk analysis and adaptation strategy. The various monitoring data has been collected from since July, with short-term information, the speculated sliding surface based on the drilling results is resided in about 36~47m deep. The fluctuation of the underground water level were apparent during rainfall in this site. Due to the deep sliding belt, engineering measures will be difficult with geological uncertainties. Since there are no direct protected targets, continuous monitoring, extra geological drilling and geophysical prospecting are suggested as below for finding out the features of the landslide and proposing disaster prevention strategies. In soft engineering, disaster prevention volunteers and disaster resistance community fortification are recommended. Based on the local rainfall information, volunteered evacuation could be conducted.