Abstract
In this study, a new construction method, in which, a pressure injection of dredged slurry is carried out in the reclaimed clay layer under the capping layer, is developed. A 1/25 scale laboratory model test was used, where the pressure injection test of soft clay was made under the various conditions. Laboratory model experiments showed that the pressure injection method has a possibility to be used in the actual tidal flat project by making two improvements on the injection methods; one is to give mechanical distirbances to the in-situ clay layer horizontally ant the other is installation of the pressing plate on the injection hole. There was a liner relationship between the volume of injected clay slurry and the area of influence.
