Application of Electric Resistivity Method to Landslide Survey at University Gulley in Chitou

• Main Authors: Jheng-Tang Ciou, 邱正唐
• Other Authors: 陳信雄
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/48856957400265223657

碩士 === 國立臺灣大學 === 森林環境暨資源學研究所 === 96 === The aim of this study is to investigate the colluvium characteristics using electric resistivity method at University gulley in Chitou. The resistivities and the layer depths can figure the geological and hydraulic condition in this area. The offset errors by the arranged arrays can estimate the lateral resistivity effects in the landslide site. The findings are as follows: 1. Analyzing the resistivity tomography, the accumulated composition in the colluvium is discontinuous and loose. 2. The low resistivity layers, says the subsurface flow or clay layers, found in dry and wet periods may endanger this site in the rain seasons. 3. Investigating from the upper to the lower slopes, the resistivity tomographies and the offset errors show the geological characteristics of debris flow. 4. The offset errors indicate the influence of the heterogenic to the survey is large.