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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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