據(jù)了解,TBM掘進(jìn)機(jī)現(xiàn)正以日均30米的速度快速掘進(jìn),創(chuàng)造大直徑TBM在復(fù)雜地層掘進(jìn)新速度。圖為天山勝利隧道施工現(xiàn)場(chǎng),天山號(hào)TBM。李太源 攝
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