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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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