Title:
LIQUEFACTION PREVENTIVE STRUCTURE OF SUBSTRUCTURAL GROUND
Document Type and Number:
Japanese Patent JP2819902
Kind Code:
B
Abstract:
PURPOSE: To improve the ground effectively by dispersing water-swelling fibers in water to prepare an injection material, injecting it from an injecting pipe into the ground easy to liquefy, allowing it to absorb the water contained in the ground without risk of diffusion and to swell and gel.
CONSTITUTION: By the one-shot injection system, an injection material prepared by dispersing water-swelling fibers in water is injected from an injecting pipe in a specified place of the ground E which is easy to liquefy at the time of earthquake, and thereby a substructural ground E1 is constructed. Otherwise, injection is made in lattice form with the aid of steel material for building a shutoff wall, and thereby a substructural ground E1 is constructed. Further an electrolyte for adjusting the swell and gellation time is added to the injection material. Thereby the injection material injected in the ground E is allowed to absorb water contained in the ground, swell, and get without risk of diffusion or dilution with the underground water before solidification. This permits constructing the substructural ground E1 with good effectiveness and less risk of ground contamination.
Inventors:
Kotani, Katsumi
Kushima, Masatoshi
Ito, Fujio
Kushima, Masatoshi
Ito, Fujio
Application Number:
JP1991000332928
Publication Date:
August 28, 1998
Filing Date:
November 22, 1991
Export Citation:
Assignee:
OHBAYASHI CORP
International Classes:
E02D3/12; E02D19/16; (IPC1-7): E02D3/12; E02D19/16