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Real‐scale miscible grout injection experiment and performance of advection–dispersion–filtration model
Author(s) -
Bouchelaghem F.,
Vulliet L.,
Leroy D.,
Laloui L.,
Descoeudres F.
Publication year - 2001
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.171
Subject(s) - grout , mechanics , suspension (topology) , dispersion (optics) , geotechnical engineering , scale (ratio) , filtration (mathematics) , advection , phenomenological model , porous medium , flow (mathematics) , porosity , mathematics , materials science , engineering , physics , thermodynamics , statistics , optics , quantum mechanics , homotopy , pure mathematics
A model was developed, to describe miscible grout propagation in a saturated deformable porous medium, based on Bear's statistical model with spatial volume averaging. In a previous paper, the model was first successfully confronted to one‐dimensional laboratory experiments. In the present paper, the numerical model is used to simulate practical grouting operation in a cylindrical injection model. The cylindrical injection model lends itself to study main flow and propagation character istics for a dispersed suspension‐type grout, under axisymmetric conditions close to real scale conditions. Comparison between numerical solutions and experimental results is essential to confirm the validity and accuracy of the proposed model from a phenomenological standpoint. The numerical model performances show that the underlying mathematical model constitutes a realistic predictive model reproducing most prominent features during injection of a suspension‐type grout into a deformable porous medium. The basic mechanism by which injected miscible grout permeates a soil mass is discussed in detail. Such a tool leads to quality control criteria for grouting on a theoretical basis, which complements existing criteria acquired through engineering practice. Copyright © 2001 John Wiley & Sons, Ltd.