Title:
CHEMICAL INJECTION METHOD AND UNDERGROUND CHEMICAL INJECTION STRUCTURE WHEN INJECTING CHEMICAL
Document Type and Number:
Japanese Patent JP2015124538
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a chemical injection method and an underground chemical injection structure when injecting chemical capable of injecting the chemical depending on a ground depth.SOLUTION: A chemical injection method comprises: a drilling process to construct a hole H by pressing a casing pipe 10 into the ground G; a layered body construction process to install a chemical injection pipe 20 having a plurality of chemical discharge ports 21 in the hole H, to construct a layered body 30 around the chemical injection pipe 20 by alternately layering an impermeable layer 31 preventing the chemical from permeating therethrough and a permeable layer 32 allowing the chemical to permeate therethrough in a vertical direction around the chemical injection pipe 20 in the hole H, and to pull out the casing pipe 10; and a chemical injection process to inject the chemical into the ground G through the permeable layer 32 with the chemical discharged through the plurality of discharge ports 21. The impermeable layer 31 is constructed of a material including solid bentonite and the permeable layer 32 is constructed of the material including at least sand or gravel and a foam body or cavities.
Inventors:
MATSUNAGA TAKAYOSHI
TSUKAMOTO NOBUO
TSUKAMOTO NOBUO
Application Number:
JP2013269881A
Publication Date:
July 06, 2015
Filing Date:
December 26, 2013
Export Citation:
Assignee:
OSAKA BOSUI KENSETSUSHA KK
International Classes:
E02D3/12
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office