地層變位傾斜儀資料特性分析

台灣之地質條件不佳，當豪雨時常造成崩塌或土石流，甚至造成嚴重災害。傾斜儀是邊坡滑動監測常用儀器之一，所量測資料包括各深度位置的總變位量及變位角度。本研究使用台東縣東河鄉泰源村之二號崩塌地的4孔觀測井資料，傾斜儀資料特性分析是將變位量與變位角度做結合，利用傾斜儀變位量資料、傾斜儀資料特性分析與STABL軟體分析來探討邊坡可能發生破壞的位置，並以STABL分析的安全係數來劃分出發生崩塌可能性較高的區域。由研究顯示傾斜儀變位量、特性分析與STABL所得到的結果相近，因此，觀測資料解析可以變位量為主，但如變位角大時，可輔以特性分析來補充解釋，並以STABL模擬結果來驗證；本研究區域分析結果之安全係數大部分皆大於1.5以上，屬於安全範圍，此結果與地勢平坦的程度有一致性。

關鍵字

傾斜儀；地滑監測；邊坡穩定； STABL

並列摘要

The poor geological conditions in Taiwan have frequently caused mountain avalanches, debris flows, and even serious disasters when torrential rain occurred. An inclinometer, placed in a hole, is one of the common instruments used to measure the total quantity of slip and the dislodgement angle at various depths. This research examined the stratum dislodgement data of four monitor wells in Number Two avalanche area in Taiyang Village, Dongho Township, Taitung County. The land deformation evaluation of possible stratum dislodgement position was investigated by three methods included slip quantity of inclinometer data, characteristics analysis of inclinometer data, and simulation analysis with software STABL. In addition, the evaluation of highly possible avalanche area was compartmentalized with different safety factor in the simulation analysis with STABL. The results shown that the land slip depths were similar by the three methods, therefore, the evaluation of observational slip can be based on slip quantity of inclinometer data. However, if the large dislodgement angle was happened, then the characteristics analysis of inclinometer data can be used to supplement explanation, and verified with simulation results of STABL. In this study, most of the safety factors of the study area were greater than 1.5 that is in a safe range and is consistent with flat terrain area.

並列關鍵字

Inclinometer ； Landslide Monitoring ； Slope Stabilization ； STABL

參考文獻

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國際替代計量

地層變位傾斜儀資料特性分析

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