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2?????????????

3???????

4???????

5?95?98??????

?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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