EP 2039881 A1 20090325 - Process for determining additives used in tunnel boring machines and device
Title (en)
Process for determining additives used in tunnel boring machines and device
Title (de)
Verfahren zur Bestimmung von Zusätzen für Tunnelbohrmaschinen und Verfahren
Title (fr)
Procédé pour la détermination d'additifs utilisés dans des machines de perçage de galerie
Publication
Application
Priority
EP 07116683 A 20070918
Abstract (en)
The present invention relates to a method for determining the quantity and/or the composition of an additive and its recipe to the encountered soil and ground water condition of an "Earth Pressure Balanced Machines" (EPBM) characterized in that it comprises at least the following steps of : - taking at least one sample of the encountered soil, - mixing the sample with water and/ or with at least one additive to obtain a paste, - measuring at least one rheological property of said paste, and - comparing the measured value with predetermined reference values prestored in a database. In another embodiment, the invention relates to a device for determining the quantity and/or the composition of an additive and its recipe to the encountered soil and ground water condition of an "Earth Pressure Balanced Machines" (EPBM) characterized in that it comprises at least one chamber called reactor including means to introduce a sample of encountered soil into said reactor, means to introduce water and/or at least one additive into reactor, means for mixing to obtain a paste, and means to measure at least one rheological property of said paste.
IPC 8 full level
CPC (source: EP)
E21D 9/04 (2013.01); E21D 9/0685 (2016.01)
Citation (search report)
- [XY] US 5808052 A 19980915 - SZABLIKOWSKI KLAUS [DE], et al
- [Y] US 6802673 B1 20041012 - ELLENBERGER PETER [CH]
- [Y] WO 9918330 A1 19990415 - MBT HOLDING AG [CH], et al
- [A] US 5180252 A 19930119 - TANAKA HIROSHI [JP], et al
- [A] US 6287052 B1 20010911 - BASSET JEAN MARC [FR], et al
- [A] FR 2690709 A1 19931105 - SEPPIC SA [FR]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 2039881 A1 20090325; EP 2205830 A1 20100714; WO 2009037315 A1 20090326
DOCDB simple family (application)
EP 07116683 A 20070918; EP 08804385 A 20080918; EP 2008062446 W 20080918