| 摘要 |
PROBLEM TO BE SOLVED: To provide a piling method capable of easily driving piles into a bed rock and whose working efficiency is high and economical and which does not break the front end of the nozzle of a water conduction pipe and always retain the force of jet water from the nozzle to efficiently remove crushed rock powder. SOLUTION: The water conduction pipes 2 are attached to a pile body 1 adjacently to each other so as to be vertically movable to the pile body 1. The pile body 1 is attached to the bed rock. The crushed bed rock is removed by jet water from the water conduction pipe 2. In this piling method, the lower end of the water conduction pipe 2 is made vertically movable within a range of about 10-300 mm. COPYRIGHT: (C)2004,JPO
|
