Title:
METHOD OF LIQUEFACTION COUNTERMEASURE THROUGH GROUND DESATURATION
Document Type and Number:
Japanese Patent JP2016125315
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To maintain durability against liquefaction over a long time, when implementing a liquefaction countermeasure through ground desaturation.SOLUTION: A method of liquefaction countermeasure through ground desaturation includes the following steps for: collecting samples from a ground to be improved; determining a saturation degree that maintains a control value, by conducting a test on water retaining property of the samples; installing pumping means for gravity drainage, negative pressure-type water pumping and others, in order to lower a groundwater level in the ground to be improved; desaturation of the ground to be improved by lowering the groundwater level, through pumping of the groundwater from the ground to be improved using the pumping means until reaching the saturation degree that allows the control value to be maintained; and preventing liquefaction by maintaining the desaturation of the ground to be improved, by suspending groundwater pumping by the pumping means.SELECTED DRAWING: Figure 1
Inventors:
TEZUKA HIROAKI
HAYASHI MIKIAKI
YAMAUCHI TAKAHIRO
OKADA NAOHITO
TANAKA MAHO
HAYASHI MIKIAKI
YAMAUCHI TAKAHIRO
OKADA NAOHITO
TANAKA MAHO
Application Number:
JP2015002038A
Publication Date:
July 11, 2016
Filing Date:
January 08, 2015
Export Citation:
Assignee:
MAEDA CONSTRUCTION
International Classes:
E02D3/10; E02D1/04; E02D27/34
Domestic Patent References:
| JP2014074283A | 2014-04-24 | |||
| JP2002097630A | 2002-04-02 | |||
| JP2013227748A | 2013-11-07 | |||
| JP2003278140A | 2003-10-02 | |||
| JP2014084556A | 2014-05-12 | |||
| JP2002256540A | 2002-09-11 | |||
| JPH083975A | 1996-01-09 |
Foreign References:
| US4273745A | 1981-06-16 |
Other References:
西垣誠、小松満、藤井直、大内正敏: "液状化防止を目的とした地盤の不飽和化に関する実験的研究", 土木学会論文集Ｃ , vol. 64, no. 2, JPN6018025377, 20 June 2008 (2008-06-20), JP, pages 340 - 352, ISSN: 0003833084
Attorney, Agent or Firm:
Yoshihide Ogawa
Previous Patent: Vehicle door check device
Next Patent: A steel pipe pile with spiral wings, a stake execution method, and a building
Next Patent: A steel pipe pile with spiral wings, a stake execution method, and a building