| 摘要 |
PROBLEM TO BE SOLVED: To provide an excavator capable of producing an uniform quality of an underground wall body and of freely selecting and adjusting the quality of a press packed wall material depending upon the purpose of use of the underground wall at a reduced cost without generating industrial wastes. SOLUTION: This is a multiple spindle pack excavator comprising a multiple spindle pack excavator 10 having a plurality of excavation shafts and a cylindrical partitioning apparatus 20 having a partitioning effect and a guide function which is installed to a height almost the same as that of an excavating function portion of the multiple spindle pack excavator at both the exterior side; the partitioning apparatus has a vertical notching hole 22 at the outer periphery of the partitioning guide cylindrical portion 21, also has a circular arc-shaped vertical recessed trench 23 at the inner periphery side, its lower end position is located below the tip of the multiple spindle pack excavator; a nozzle 25 jetting a high pressure fluid from the bottom portion of the inner surface of the partitioning apparatus and an apparatus sucking and lifting the fluid to the inside of the guide cylinder for partition are installed; and thus the construction of the multiple spindle pack excavator is capable of sending a proportioned turbid fluid under pressure from a hollow tip of the excavating shaft of the machine.
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