陳宏宇2006-07-252018-06-282006-07-252018-06-282001http://ntur.lib.ntu.edu.tw//handle/246246/11782從現場地質材料的試驗結果顯 示，溝谷中材料之含量以5 公分以上之岩 塊為主，分布在68%左右，細顆粒則分布 在10%左右，堆積材料之摩擦角介於37.2° ∼42.3°之間。至於溝谷兩側岩坡不連續面 材料之摩擦角則分佈在27.4°∼47.1°之間， 其中砂岩之剪力強度較頁岩為高。從現地 坡體穩定性分析結果顯示，溝谷中堆積地 質材料與溝谷兩側具有潛在破壞性之坡 體，在飽和狀態下其安全係數均小於1 ， 屬於不穩定狀態。因此，溝谷堆積材料及 溝谷兩側之岩坡可能在高降雨強度下先後 發生破壞，進而形成土石流。The experimental results show that the major contents of deposited material on the gully are gravel particles comprising around 68%. The fine particles are less than 10% of the total. The friction angle of deposited material ranges from 37.2° to 42.3°. The friction angle of sandstone ranges from 28.4° to 47.1°. The friction angle of shale ranges from 29.3° to 32.9°. Analysis of the slope stability on the gully reveals that the deposited geomaterials and rock slope on both sides of valley is unstable when saturated. Thus heavy precipitation may trigger the occurrence of debris flow.application/pdf811034 bytesapplication/pdfzh-TW國立臺灣大學地質科學系暨研究所摩擦角穩定分析friction angleslope stabilityreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/11782/1/892625Z002043.pdf