Abstract
The Tokyo Metropolitan Government, in the construction of the new waste disposaloffshore area, aims to increase the disposal volume by vertical drain method which accelerates the consolidation of the seabed soft soil as the reclamation works of the waste disopsals is executed. The project adopted the marine plastic drain (MPD) method in the northern part of B-block as vertical drain method.
This MPD method, one of the plastic drain methods, has been developed for deep soilimprovement and has realized excellent working efficiency. And the design of MPD method is applicable to the plastic drain method which is used extensibely.