臺灣能源期刊第5卷第1期-臺灣能源期刊論文全文-能源期刊-能源知識庫

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臺灣能源期刊論文全文

出刊日期：March, 2018

Title: Electrical Tower Site Safety Assessment by Using Environmental Geology Study - A Case in Zhongliao Area

摘要: 臺灣輸配電網廣布，約有2萬座電塔，其中有部分座落於山坡地之山崩與地滑地質敏感區，如民國88年臺南左鎮326電塔災變，以及近期106年6月2日核一廠內電塔災害。這些災變除造成停電不便外，對國家經濟影響層面亦極為廣泛；為了能維持輸電線路穩定，電塔塔址位置之安全性，實為重要課題。本研究選擇南投中寮地區為例，以綜合環境地質與環境地形角度，進行電塔設施『致災地形區之環境地質評估』，期建立電塔環境地質體檢範本，供後續相關設施選址及保全施工參考。本研究結果歸納說明如後：(1) 現有環境地質資料在透過致災地形區環境地質評估加值後，可較精確找出較具危害性區域，並能釐清較小危害性區域，以減少一些不必要的調查。(2) 本區電塔廣泛分布於階地區，僅位在階地周緣之電塔，易受到地質災害之潛在影響。(3) 位在高地區之電塔，因受地形條件限制，而不易保有適當緩衝區。(4) 只有少數的電塔位在坡面區與低地區。前者為環境敏感地帶，後者在地形上限制較小，應盡量採用有適當緩衝距之區域。

Abatract: There are more than 20,000 electric transmission towers distributed all around the Taiwan, while quite a large nmuber of the towers located at geology hazard sensitive areas. Tower number 326 and the tower located at nuclear power plant were collapse in 1999 and 2017, respectively, both of them caused shortage of power supply and increased social cost. Geology hazard assessment is one of the most important issues for power supply stability. To keep away geology hazard and power supply stability, a rule to inspect the safety of electrical tower is important. In addition to the existing environmental geology, terrain elevation data were also take into consider as an important criteria. An electrical tower located Zhongliao, Nantou area was conducted to demo the applicability of this method. Some conclusion described as follows. (1) Integrated environmental geology and topography method is proposed in this study can locate geology hazard area more precise and reduce field work effectively. (2) Tower sites located near terrace boundary are the geology hazard potential area need to reconsider its safety. (3) It is not easy to keep suitable buffer distance for the towers located at higher terrace. (4) Fewer sites located at slope and lower terrace area are environmental sensitivity area need suitable buffer distance to keep site safety.