頁籤選單縮合
題 名 | 瑞里幼葉林地滑機制探討=Investigation of the Landslide Mechanism in Ruei-Li Iou-Ie Woodland |
---|---|
作 者 | 鄭裕適; 陳勝全; 顏呈仰; | 書刊名 | 水土保持學報 |
卷 期 | 43:4 2011.12[民100.12] |
頁 次 | 頁371-380 |
分類號 | 441.103 |
關鍵詞 | 地滑; 地質調查; 砂頁岩互層; Landslide; Geological survey; Interbedded sandstone and shale; |
語 文 | 中文(Chinese) |
中文摘要 | 幼葉林地滑位於嘉義縣梅山鄉瑞里村,近年來遭逢暴雨侵襲即有地層滑動災害發生,尤其 以民國98 年8 月之莫拉克颱風造成之滑動破壞最為嚴重,初步估計滑動體頭部地表陷落約達 1~2 公尺以上。經初步地質調查、地下水文監測等相關調查工作後,發現本地滑區為一老崩塌 區,研究邊坡所在屬卓蘭層分佈,岩性為砂頁岩互層特性,前次地質災害導致大規模坡體順向 滑動,並於研究邊坡留有厚層崩積土層,先民於此地屯墾已有百年以上歷史,但近年極端降雨 導致邊坡穩定狀態超過臨界條件,是以前次崩積材料再次向下坍滑,相關滑動特性尚待持續監 測加以證實。 |
英文摘要 | Iou-Ie woodland landslide area is located in Ruei-Li village, Meishan Township, Chia-I County. In recent years, this area faces with landslide disasters during heavy rainfalls. Particularly in August 2009, a landslide caused by Typhoon Morakot was the most serious than ever. The initial estimation of the head surface slidingbody was about 1- to 2-meter drops. From preliminary geological investigations, groundwater monitoring and other relative examinations, we found that Iou-Ie woodland landslide area is an old landslide area, where the geology is Cholan formation, inter-bedded with sandstone and shale. Previous geological disasters have led to large-scale landslides along the body, and left in the thick layer of colluvial soils. Our ancestors have being cultivated in this place for more than a century. However, extreme rainfalls have led to critical slope stability problem in recent years and caused the previous collapsed materials to slide again. Therefore, some relative sliding characteristics should be constantly monitored for this area. |
本系統中英文摘要資訊取自各篇刊載內容。