| 摘要 |
PURPOSE:To remove the void water of supersoft ground by a method in which a bar-like body having a large diameter part on its lower end and a water collecting chamber above the large diameter part is vibrated, and the lower end of a water pumping tube provided along the bar-like body from a drain pump device on the ground surface is connected to the water collecting chamber and the water is pumped up. CONSTITUTION:A large diameter part 6 having a water collection chamber 5 surrounded by a wall plate 4 with large number of through holes 3 is provided to the lower end of a bar-like body 2 having a vibrator 1 on its upper end. The other end of a water pumping tube 7 whose lower end is opened in the water collection chamber 5 is connected to a drain pump device 8 on the ground surface along the bar-like body 2. The device is hung down by a crane 12, etc., on hard ground and penetrated to a given depth into supersoft ground while vibrating the large diameter part 6 by the vibrator 1, and the drain pump device 8 is worked. Since void water of the nearby supersoft ground is sucked up, the usual soft ground can be improved in a short time. |
