| 摘要 |
PURPOSE: A drilling bit which easily presses a sheet pile and a sheet pile indentation method using the same are provided to press a sheet pile to be used for soft and hard foundations. CONSTITUTION: A drilling bit comprises a bit head(10), a connection part(50) and a hammer. The bit head comprises a declined part(13) and a plurality of beater elements(15). The connection part is connected to the upper side of the bit head with inclined toward a fixed direction. The connection part is connected to the hammer. The hammer is driven in up down vibration with the fluid pressure or the pneumatic pressure the up down vibration. |
