| 摘要 |
PURPOSE: A machine for boring a pile hole for foundation construction is provided to improve the end bearing capacity of a pile by increasing a contact area. CONSTITUTION: A machine for boring a pile hole for foundation construction comprises an auger(10), a boring member(20), and one or more blade portions(25). The auger has a hollow(15) and depressed holes(12). The depressed holes are formed on the outer edge of the front end of the auger and are connected to the hollow. The boring member is received in the hollow of the auger to be liftable. The blade portions are rotatably coupled to the end of the boring member using pins(26). When the boring member is lifted up, the ends of the blade portions are drawn out of the depressed holes of the auger.
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