Title:
VACUUM CONSOLIDATION METHOD AND DRAIN MATERIAL
Document Type and Number:
Japanese Patent JP2017002681
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a vacuum consolidation method that can prevent the occurrence of a negative pressure loss in a sand layer and prevent a decrease of a vacuum consolidation effect in the vacuum consolidation using a placed drain material, when a surface layer of the ground for an improvement target is constituted of a sand layer with a ground water level surface, and provide a drain material of that purpose.SOLUTION: This vacuum consolidation method performs vacuum consolidation by placing a drain material 11 on the ground for an improvement target, laying an airtight sheet 12 so as to cover a ground surface S of the ground G, and applying a negative pressure to the drain material. When a sand layer G2 exists in a surface layer of the ground and a ground water level surface H exists in the sand layer, a blocking part 13 for interrupting a flow of water in the inside of the drain material is provided in the drain material positioned in the sand layer deeper than the ground water level surface.SELECTED DRAWING: Figure 1
Inventors:
KUMAGAI TAKAHIRO
TAKADA KOICHI
TAKADA KOICHI
Application Number:
JP2015120931A
Publication Date:
January 05, 2017
Filing Date:
June 16, 2015
Export Citation:
Assignee:
PENTA OCEAN CONSTRUCTION CO LTD
International Classes:
E02D3/10
Domestic Patent References:
| JP2000234320A | 2000-08-29 | |||
| JP2002097626A | 2002-04-02 | |||
| JP2014145157A | 2014-08-14 | |||
| JP2007126906A | 2007-05-24 | |||
| JP2015140605A | 2015-08-03 | |||
| JP2016069793A | 2016-05-09 |
Foreign References:
| US20070048088A1 | 2007-03-01 |
Attorney, Agent or Firm:
Keijiro Tamura
Kenichi Kobayashi
Kenichi Kobayashi