Global Patent Index - EP 0987399 A1

EP 0987399 A1 2000-03-22 - Process for sealing and/or strengthening in underground constructions

Title (en)

Process for sealing and/or strengthening in underground constructions

Title (de)

Verfahren zur Abdichtung und/oder Verfestigung von Bodenbereichen im Tiefbau

Title (fr)

Procédé pour renfoncer et rendre étanches des constructions en sous-sol

Publication

EP 0987399 A1 (DE)

Application

EP 99118325 A

Priority

DE 19842072 A

Abstract (en)

[origin: DE19842072C1] A process for sealing and/or strengthening ground in underground construction, especially in tunnel or drain construction, comprises locating an injection lance (4) and then using it to inject a substance, containing cement, into the ground. A mixture of polyurethane-hydrogel is formed at one side of the lance inlet (7) while cement powder or a cement-water mixture is formed at the other side. The mixture is then pressed through the lance to its openings (8) where it is pushed into a cement containing substance and mixed with water. The water is supplied via a pipe (6).

Abstract (de)

Es wird ein Verfahren zur Abdichtung und/oder Verfestigung von Bodenbereichen im Spezialtiefbau vorgeschlagen, bei welchem eine Mischung aus einem Polyurethan-Hydrogel und Zement über eine Lanze zu den Lanzenöffnungen gepreßt und dort mit Wasser gemischt wird, welches entweder über eine gesonderte Wasserleitung zugeführt wird oder in dem zu behandelnden Bodenbereich aufgrund dessen Wasserführung zur Verfügung steht. <IMAGE>

IPC 1-7 (main, further and additional classification)

E21B 33/138; E21D 9/00

IPC 8 full level (invention and additional information)

E02D 3/12 (2006.01)

CPC (invention and additional information)

E02D 3/12 (2013.01); E02D 2250/003 (2013.01); E02D 2300/0014 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19842072 C1 19991028; EP 0987399 A1 20000322

INPADOC legal status


2002-10-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020403

2000-12-06 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-11-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000920

2000-03-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-03-22 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI