| 摘要 |
PROBLEM TO BE SOLVED: To provide a tip implement for a steel pipe jacking pile capable of greatly reducing the manufacturing cost by remarkably reducing the kinds of the tip implement of a steel pipe jacking pile in comparison with the conventional cases and preventing the spiral cutting edge from being damaged by the underground stones, and further, greatly reducing the construction cost of a well in comparison with conventional cases. SOLUTION: The tip implement is fixed to the extremity of a pile, when a steel pipe pile is pressed in the underground. An opposite side position opposite to the undeerground press in part has a tapered face wherein the diameter gradually decreases as the above side position goes to the direction of the pile from the outside to the inside and press in extremity side to the direction of the pile and the section is formed of straight lines or curved lines. The external surface of the tip implement is provided with one or more spiral excavation brades. In the rotational vicinity of the extremity of the excavation brade of the tip implement, an earth reservoir for the earth excavated by the excavation brades is formed in the rotational vicinity of the tip of the excavation breads. Moreover, one or more holes are formed in the tip implement for introducing the underground water into the inside of the steel pipe pile. COPYRIGHT: (C)2004,JPO&NCIPI
|
