Accession Number:

ADP006467

Title:

Development of a Vacuum Consolidation Method Employing Horizontal Drains,

Descriptive Note:

Corporate Author:

JAPAN DREDGING AND RECLAMATION ENGINEERING ASSOCIATION TOKYO

Personal Author(s):

Report Date:

1992-03-01

Pagination or Media Count:

22.0

Abstract:

A vacuum consolidation method employing horizontal drains has been developed as a way to improve very soft ground. In this method, plastic board drains are laid in extremely soft ground with roughly 1.0-m square arrangement, and a vacuum is applied to the clayey soil from one end of the drain to consolidate and improve the soil. From this development project, the following conclusions were reached a According to laboratory experiments conducted on vacuum consolidation, a high level of improvement equivalent to loading consolidation has been obtained when a vacuum is applied to clayey soil. b From the onsite experiments, it was found to be relatively easy to lay horizontal drains in the ground. c It was verified that soil in landfills produced by the disposal of dredged clayey soil and in disposal sites containing slurry can be significantly improved by this method.

Subject Categories:

  • Solid Wastes and Pollution and Control
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE