Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34979
標題: 結合ERT法與大地工程試驗於崩塌地特性調查之研究─以八燕坑崩塌為例
Using the ERT and geotechnical tests in landslide investigation - A case study of Ba-yeng-keng landslide
作者: 陳奕凱
Chen, Yi-Kai
關鍵字: Electrical Resistivity Tomography
地電阻影像剖面法
Landslide
Drilling
Geotechnical test
Stability analysis
崩塌地
鑽探
大地工程試驗
穩定分析
出版社: 水土保持學系所
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摘要: 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.
本研究於八燕坑崩塌地施作ERT,將之與試區內鑽探與相關大地工程試驗結果對應,以提高ERT之解釋性。ERT結果顯示試區的崩積層厚度與鑽探資料吻合,電極排列法以Pole-Pole排列最為適用。比對室內大地工程試驗結果,發現試區崩積層電阻率主要受礫石含量與飽和度所支配。而現地標準貫入試驗(SPT)N值則與橫截電阻率呈線性關係,由粒徑分布結果可顯示關係式的係數主要受礫石含量影響。本研究最後依據ERT成果、大地工程試驗資料建立邊坡數值模型,進行崩塌地之穩定分析。
URI: http://hdl.handle.net/11455/34979
其他識別: U0005-2807201020455100
Appears in Collections:水土保持學系

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