Using the ERT and geotechnical tests in landslide investigation - A case study of Ba-yeng-keng landslide

• Main Authors: Yi-Kai Chen, 陳奕凱
• Other Authors: 馮正一
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/83779698619727070996

碩士 === 國立中興大學 === 水土保持學系所 === 98 === In this study, the ERT method was applied to investigation a landslide area in Ba-yeng-keng, Taiwan. In order to improve the interpretation, the ERT results were correlated with the data of drilling and geotechnical tests. The thickness of colluviums detected by ERT agrees with the borehole data, as indicated in the results. Pole-Pole array type is the best electrode arrangement in this study area. Laboratory test data indicates that the dominant influences on resistivity of colluviums are saturation and gravel content. The transverse resistivity of colluviums is linearly related with N-values obtained from SPT, as observed in this study. The coefficients of the linear relationship are sensitive to the gravel content in this area, which was verified by grain size distribution. Finally, the study constructed the landslide numerical model based on the results of ERT and geotechnical tests for slope stability analysis.