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US5051032A Method and apparatus for continuously excavating shaft and tunnel 失效
连续挖掘轴和隧道的方法和装置

Method and apparatus for continuously excavating shaft and tunnel
摘要:
A shield excavator excavates a shaft. Then, the excavator is caused to swing to change its posture and excavate a tunnel. Thus, the shaft and the tunnel is continuously excavated by the single machine.
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