Abstract
The method of uplifting the ground surface by pressure injection of slurry sludge enabled to restore the settled ground without influencing the creatures living on and inside the tidal flat. In order to establish the method,this study was carried out to examine the effectiveness of several auxiliary methods to uplift the ground smoothly. As a result of experiment, it turns out that softening of original grond in the horizontal plane is most effective for the purpose. Especially, soft layer is successfully formed by improving the arrangement of injection nozzles in a water-jet cutting method. A practical construction sequence, which is composed of water-jet cutting and pressure injection of slurry clay, is proposed in this study.
