英文篇名
PLANNING AND DESIGN FOR NEW WUCHIEH AND LISHI CREEK DIVERSION TUNNEL PROJECT
作者
劉弘祥、林維雄、劉欽正、李鴻洲
關鍵字
D&B工法、TBM工法、快速開挖與支撐、彈性施工、特殊困難
摘要
新武界引水計畫為連結現有武界壩、新建栗栖壩及日月潭之越域引水工程,隧道總長約15.7公里(不包括橫坑),其中C橫坑至木屐欄溪段(約7.1公里)採用TBM工法開挖隧道,其餘採用D&B工法開挖隧道。針對TBM隧道部分施鑽水平及傾斜長鑽孔,開創台灣隧道工程地質調查新模式。為了符合D&B與TBM工法施工之特性、滿足快速開挖與支撐之要求、彈性施工新觀念與採用新材料的趨勢,本套設計圖與規範採用許多配合措施,以利工程順利進行。另針對特殊困難段,建議D&B與TBM工法各五種組合施工方法,承包商除了可選擇適當處理方法相互搭配組合之外,並且可另外提出施工計畫,俟業主核定後即可施作。
英文摘要
The New Wuchieh and Lishi Creek Diversion Tunnel Project is a transbasin diversion project that connects the existing Wuchieh Dam and the new Lishi Dam to the Sun-Moon Lake Reservoir. The tunnel is 15.7 km in length. In which, the section in the Main Tunnel from the C-Adit to Muchilan Creek, about 7.1 km in length, is bored with a TBM, while the remainder of the length of tunnel is excavated by means of conventional drill and blast method. To explore the TBM bored section; both horizontal and inclined long drill holes were sunk. This is a first in terms of geological exploration for tunnelling. The design drawings and specification adopt many new measures that are meant to meet the demands on fast tunnel excavation and supporting, flexible construction and use of new materials. Through these measures, the construction of the tunnel will progress smoothly. For special difficult sections, five combined construction methods through use of TBM as well as D&B are recommended. In addition, the Constructor has the option of choosing construction methods that best suit the situation. He is also in position to submit construction plans, which, upon approval from the Client, can be the basis of engineering construction.