MEASUREMENT AND EVALUATION OF SETTLEMENT BEHAVIOR OF RECLAIMED CLAY LAYER INSTALLED VERTICAL DRAINS

Abstract

 In the vertical drain method using plastic board drain for a working disposal pond, it is important to maintain horizontal drainage because the subsequent dredged clay is piled up on the ground surface installed vertical drains. In this paper, the settlement of ground level installed vertical drains, thickness of subsequent dredged clay layer on the ground installed vertical drains, pore water pressures in the ground and water pressures in the vertical and horizontal drains were measured until 14 months after the installation of vertical drains, and these results were evaluated.