時域反射探測儀於藤枝林道邊坡監測之應用

Application of Time Domain Reflectometry on Slope Monitoring Along the Tengchih Forest Road

方啟仲(Chi-chung Fang Fang)

指導教授 ： 許中立

國立屏東科技大學/工學院/水土保持系所/碩士(2015年)

https://doi.org/10.6346/NPUST.2015.00264

摘要

本研究藉由運用時域反射技術來監測藤枝地滑區域，以時域反射儀做為量測地層變位的方式，在藤枝林道地區獲得良好的成效，而且除了開始佈設之成本外，其餘甚少有額外成本上花費，因此比起傳統傾斜管使用上亦較具優勢，且改善傳統傾斜管變形過大儀器即無法量測之缺點，提供了現代化地層滑動監測之另一項選擇。
另於試驗室探討同軸電纜之不同線徑在同軸電纜產生折角時，對於其產生的波形之間關係加以分析，試驗結果發現折角與波形所產生之面積有相當高的相關性，當夾角越趨向0°時其波形下方面積越大，經統計分析其間具有高度相關，而夾角與波峰高度亦有相當關係，當夾角越趨向0°時其波幅越大，經統計分析其間亦有高度相關。且當線徑越粗且夾角越小時，可以發現其波形面積越大，波形高度(反射係數)則愈高。

關鍵字

時域反射技術 ； 波形 ； 地滑

並列摘要

The research has adopted time domain reflectometry technicality to monitor the landslide area in Tengchih Forest Road. A Time domain reflectometer was adopted to measure the degree of landslide. Great effects were obtained from the research. Aside from the setting cost at the beginning of the research, not much additional cost was spent. Therefore, it is more advantageous to adopt this device than the traditional inclinometer. Since the traditional inclinometer could not measure accurately if the layers slide too much, time-domain reflectometer had provided another option to monitor the degree of landslide in the modern world.
Another experiment is conducted to analyze how wave shapes change as different lines produce deflection angles around the coaxial cable. The test result revealed that there is a high correlation between the deflection angle and the area generated from wave shape. As the angle approaches zero degree, the area below the wave shape increases and it has a high correlation with the height through statistical analysis.There is also a very high correlation between the angle and the height of the wave crest. As the angle approaches zero degree, the wave amplitude grows larger.There is also has a high correlation with the height according to statistical analysis.The thicker the lines and the smaller the intersection angle,the larger the area and the height of wave shape(reflection coefficient).

並列關鍵字

Time domain reflectometry ； Wave pattern ； Landslide

參考文獻

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