EP 2205830 A1 20100714 - 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 IN TUNNELBOHRMASCHINEN VERWENDETEN ADDITIVEN UND VORRICHTUNG
Title (fr)
PROCÉDÉ POUR DÉTERMINER DES ADDITIFS UTILISÉS DANS TUNNELIERS ET DISPOSITIF
Publication
Application
Priority
- EP 2008062446 W 20080918
- EP 07116683 A 20070918
- EP 08804385 A 20080918
Abstract (en)
[origin: EP2039881A1] 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)
See references of WO 2009037315A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA 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