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2???????

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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