| 摘要 |
PURPOSE:To enhance the efficiency of improvement work for soft ground by a method in which a vibration element is penetrated into soft ground and slowly moved vertically, followed by further vertical and continuous vibration by a vibrator, and a grout is also injected. CONSTITUTION:While a vibration element 4 is penetrated into soft ground 5 and slowly and continuously vibrated vertically by a vibrator 1 so as to secure the thickness of construction for improvement work, a grout is injected through the nozzle 10 at the lower part of the vibration element from a supply pipe 9 by a pump 8. |
