台灣平地有限，山地及丘陵佔了全省面積三分之二以上，故許多工程朝向山地發展是不可避免的趨勢，因此需要去面對邊坡穩定之相關課題。本研究針對構築於節理岩坡上之鐵塔，模擬鐵塔承受垂直與水平載重之三種不同組合，探討整體岩坡穩定相關之工程行為。研究利用UDEC軟體進行數值模式分析，於一組及兩組規則節理岩坡鐵塔受到三種不同組合載重下，分析的重點在於伴隨岩坡應力之調整、節理面之錯動、張力裂縫及塑性區之產生及發展等等。
研究結果顯示，規則節理岩坡之工程行為會受節理組數及作用於鐵塔之不同載重組合影響，於研究範圍內最危險情況為包含垂直與水平載重，且水平載重沿節理之分量會下推鐵塔。經由漸進式破壞相關歷程之應力等壓線、位移分佈及塑性區發展，可以作為規則節理岩坡鐵塔營運期間之維護與監測之參考。

The land availability is not enough because mountainous and hilly area is over two-thirds in Taiwan. It is unavoidable that more and more constructions are compelled towards hills, and slope stability becomes a big issue to engineers. This research focuses on the engineering behavior of rock slope with one or two regular jointed set under tower loading. In order to understand the overall stable characteristic of the tower and slope, Three different combinations of tower loading near slope were applied. Numerical code UDEC was used to build numerical model and perform analysis in the study. The investigation focused of three different combination of tower loading on the rock slope. Important analytic issues include stress redistribution; slip dislocations of joints, tensile cracks and the development of the plastic zone.
The analytical results show that the mechanical behavior of tower built in regular jointed rock slope is influenced on the tower loading, numbers of joint set within the study scope. The most critical situation happens while the tower loading consists of vertical and horizontal loading, and the parallel joint component of horizontal loading is to push down the tower. Base on the equal-stress contour, the magnitude of deformation and plastic zone of the overall slope under different progressive periods, some suggestions are proposed for remediation and monitoring of tower built in regular jointed rock slope.

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