| 摘要 |
PROBLEM TO BE SOLVED: To provide an immersion method for a concrete pile facilitating the immersion of the pile, at the same time, reducing the volume of earth to be removed with the excavation as much as possible and preventing the rising of an earth removal expense. SOLUTION: The concrete pile incorporating an injection hole therein is used, a circular arc shaped friction cutter and an excavation vane are mounted to the lower end of the pile, and first of all, an auger drill 50 is used to bore in the ground up to the embedded depth of the pile, and the auger drill 50 is pulled out so as not to remove an excavated earth to the ground by reversely rotating the auger 50. The concrete pile is rotationally immersed in the boring track of the auger while injecting pressure water and compressed air, and after the lower end of the pile reaches a load bearing layer, a cement milk is injected from the injection hole by applying pressure thereto, and the front end of the pile is combined with a load bearing layer ground.
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