電氣探測法應用於新佳陽地滑地層調查

Applying Earth Electrical Logging Method on the Examination of Stratum Condition in Shinjuayan Landslide

許中立(Chung-Li Hsu)

《水保技術》 4卷1期 (2009/01) Pp. 25-35

https://doi.org/10.30040/JSWCT.200901.0003

摘要

台中縣和平鄉新佳陽部落地層滑動已有數十年時間，雖亦有進行地質鑽探調查，然礙於經費、人力與時間，使得施鑽深度與數量均不足，難以代表該區域之地滑特性。故本研究採用電氣探測法，藉由各地層間比電阻值之差異性，配合地表露頭及鑽探柱狀圖分析，據此研判新佳陽地滑地之地層分佈、滑動深度及範圍。調查分析結果得知本地區之地層大致上具有二層滑動，淺層滑動面位於地下0.5~3m處，深層滑動面依測點位置不同，範圍自地下8~29m不等。由二維地層剖面圖可發現碗形構造，顯示此地區地層應屬不穩定滑動狀態。

關鍵字

地滑 ； 電氣探測法 ； 地層

並列摘要

Shinjuayan village located in Hopin Township, Taichung County, landslide geologic disaster already had several years. Although have already carried on the investigation of geological boring as well, however make boring depth and amount all not enough due to budget, manpower and time, and is hard to represent the ground of that district slip characteristic. This research used the earth electrical logging method by each layer compare the difference of electric resistance value and concert ground outcrop and boring log diagram analysis. To judge Shinjuayan landslide geologic stratum distribute, sliding depth and scope. The investigate analysis result to know the geologic stratum can divide two sliding layers on the whole, the shallow layer is located on an underground 0.5~3m, the deep layer depend on different measure position, the scope from the underground 8~29m. It cane find that the bowl sharps to build and show in this area two-dimensional geologic stratum cross section analysis diagram, it should belong to unsteady sliding appearance.

並列關鍵字

Landslide ； Earth electrical logging method ； Stratum