| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a shield machine capable of smoothly excavating ground at low cost by a simple facility without requiring the use of bentonite, a cement-based material, or the like and without generating industrial waste irrespective of the type of the ground. Ž<P>SOLUTION: This shield excavator 10 includes a generally cylindrical shield 11, an excavation cutter head 13 for excavating the ground, an agitating blade 15 for agitating excavated soil which has a diameter smaller than the excavation cutter head 13 and is rotatingly driven in the direction reverse to the rotating direction of the excavation cutter head 13, an excavated soil rotating and feeding device 23 which rotates and moves the excavated soil from the lower portion to the upper portion along the inner peripheral surface of the shield 11 and falls the excavated soil rearward when the excavated soil reaches the upper portion, and a conveyor 16 for feeding the excavated soil rearward. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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