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3?????

4???????????

5????????????

????????????????12????2?????????????? (?? ?)2????,??“??”?????????????(TBM)????????????4???8?????????,???????????TBM????,???????????TBM???

12??2?????????,??????????????TBM“?”?????????????????????

?????????????,“??????????”TBM???,?????,????????12.23??,????160?,????????????????????????????2800?????????????????????????????,???,??????????,?,?????20%????????????40%?

???????????????????????12?2?????????????????,????????????????????3.3??,?????14.9??????????????????,10???????????????????TBM??4?,?????2??????????

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