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???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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