Re: [新聞] 深不見底！ 世界最深的北韓平壤地鐵
這篇雖然是社后文，不過有個問題我從以前就想問
這種大深度地鐵他們當初是怎麼挖出來的？
40年前差不多是TBM剛進實用化的階段
而我不太相信當時的北韓會大量使用TBM技術，而縱深100M左右的深度
看起來不太可能用明挖，而要是用傳統隧道工法的話
那將會是世界上最大工程的隧道
況且，報導說之所以要挖那麼深，除了避難考量，還有避免危及建築物
所以聽起來更不可能是明挖（明挖100M縱深 別說施工難度了，旁邊建築恐怕更危險）
所以假設縱深100M是對的，有人有印象哪邊有提及北韓是怎麼施工的嗎?
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