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Patent Searching and Data


Title:
GROUND FREEZING CONSTRUCTION METHOD AND GROUND FREEZING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/098367
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a ground freezing construction method having good coolant thermal efficiency without a gas phase coolant being released into the ground or into the air. For that purpose, the present invention has: a freezing pipe (1: casing) for freezing the ground embedded in the ground and a coolant circulation pipe (2) provided on the inside of the freezing pipe (1), wherein the coolant circulating inside the coolant circulation pipe (2) is carbon dioxide; and a coolant apparatus (10) that cools and supplies the carbon dioxide to the coolant circulation pipe (2), the coolant circulation pipe (2) comprising a first coolant circulation pipe (2A) on which a plurality of micro-coolant paths (2A delta) is formed, wherein the tip portion (tip portion in the ground) of the first coolant circulation pipe (2A) is connected to a plugging member (3: bottom socket) that connects the plurality of micro-coolant paths (2A delta) of the first coolant circulation pipe (2A)to a coolant supply side and coolant return side.

Inventors:
TACHIWADA Yuichi (2-2-5 Toranomo, Minato-ku Tokyo 01, 〒1050001, JP)
TSUCHIYA Tsutomu (2-2-5 Toranomo, Minato-ku Tokyo 01, 〒1050001, JP)
ARIIZUMI Takeru (2-2-5 Toranomo, Minato-ku Tokyo 01, 〒1050001, JP)
SOMA Hirosi (2-2-5 Toranomo, Minato-ku Tokyo 01, 〒1050001, JP)
Application Number:
JP2015/062198
Publication Date:
June 23, 2016
Filing Date:
April 22, 2015
Export Citation:
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Assignee:
CHEMICAL GROUTING CO., LTD (2-2-5, Toranomon Minato-ku Tokyo, 01, 〒1050001, JP)
International Classes:
E02D3/115; E02D19/14; E21D1/12; E21D9/04
Foreign References:
JPH06136738A1994-05-17
JP2003239270A2003-08-27
JPH11209990A1999-08-03
JP2010145021A2010-07-01
JP3241872B22001-12-25
JP2006241905A2006-09-14
JPH06173242A1994-06-21
JP2006038277A2006-02-09
JPH06147697A1994-05-27
Other References:
See also references of EP 3235955A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY TAKAHASHI OFFICE (13-3, Nishishinbashi 2-Chome Minato-k, Tokyo 03, 〒1050003, JP)
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