| 摘要 |
PURPOSE:To prevent a water absorbing body from being damaged by a method that protectors are fitted to the bottom of the body, and said body is pushed down, then the protector is evacuated out. CONSTITUTION:A bent part situated on the lower part of the water absorbing body 1 is firmly clamped between the protectors 9 and a press plate 8, and then a thrust body 2 is pushed into the soft ground. When oil or its equivalent is injected into the upper part of a cylinder 4, a piston 5 descends, and, through a rod 6, it pushes down the bent part of the body 1 in keeping a connecting part 7 and the press plate 8 horizontally. Then, the protectors 9 open right and left, and earth, sand, water, gravel, etc. enter through an opening between the open end of the protectors 9 and the press plate 8, and suppress beneath the bent part of the body 1. When the oil or its equivalent is injected into the lower part of the cylinder 4, the piston 5 ascends. After a casing 10 is pulled up, the body 1 is cut off. |
