雪山隧道 為什麼是做成兩線道阿?
是地質/施工難度/經費 才設計成兩線道嗎?
如果當初就設計成三線道或更多
是不是 就不容易塞車?
有沒有 雪隧是兩線道的八卦?
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那就是 施工工法的問題 那是是誰決定TBM工法?
不能換個 可以三線道 的工法嗎?
※ 編輯: BMOI (223.141.138.126), 05/31/2017 11:11:59
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