EP 0165161 B1 19880803 - METHOD AND PLANT FOR FREEZING SOILS BY MEANS OF A CRYOGENIC LIQUID
Title (en)
METHOD AND PLANT FOR FREEZING SOILS BY MEANS OF A CRYOGENIC LIQUID
Publication
Application
Priority
FR 8408647 A 19840601
Abstract (en)
[origin: ES8608086A1] The injection of liquid nitrogen into the probe (2) is regulated in an on-off manner so as to maintain the temperature of the ground at the coldest point above a value within the range of between -140 DEG C. and -160 DEG C. so as to cause calefaction of the liquid nitrogen. The liquid nitrogen is alternately injected into the central passage (9) and into the annular passage (11) of the probe, these passages being thermally insulated from each other.
IPC 1-7
IPC 8 full level
E02D 3/115 (2006.01); E02D 19/14 (2006.01)
CPC (source: EP US)
E02D 3/115 (2013.01 - EP US); E02D 19/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0165161 A1 19851218; EP 0165161 B1 19880803; AT E36181 T1 19880815; CA 1269852 A 19900605; DE 3564142 D1 19880908; ES 543739 A0 19860601; ES 8608086 A1 19860601; FR 2565274 A1 19851206; FR 2565274 B1 19861017; JP S6117625 A 19860125; US 4676694 A 19870630
DOCDB simple family (application)
EP 85401054 A 19850529; AT 85401054 T 19850529; CA 482932 A 19850531; DE 3564142 T 19850529; ES 543739 A 19850531; FR 8408647 A 19840601; JP 11552185 A 19850530; US 73960285 A 19850529