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Modeling Grout Injection Volume in Fractured Rock Using Borehole Imagery
Predicting grouting volumes for a cutoff barrier in rock formations has traditionally relied on empirically-derived methods that generally resulted in large variations in estimated quantities. Technological advances in downhole imagery and the use of statistical methods now provides the grouting engineer with a theoretical means of quantitative modeling of injected grout volume. A fracture analysis (FA) methodology has been developed which includes the determination of the spatial geometry of structural features in the rock and the quantification of attributes of primary interest, including aperture geometry, degree of fracture penetration and sinusoidal height of partially-penetrating fractures. The robust multivariate regression statistical technique was then applied. The results indicated statistically significant correlation for borehole stage accumulated grout take with several of the measured and calculated fracture parameters. Application of these procedures using imagery and grouting data from exploratory boreholes may provide valuable information on anticipated grout injection volumes for future grouting projects.
Modeling Grout Injection Volume in Fractured Rock Using Borehole Imagery
Predicting grouting volumes for a cutoff barrier in rock formations has traditionally relied on empirically-derived methods that generally resulted in large variations in estimated quantities. Technological advances in downhole imagery and the use of statistical methods now provides the grouting engineer with a theoretical means of quantitative modeling of injected grout volume. A fracture analysis (FA) methodology has been developed which includes the determination of the spatial geometry of structural features in the rock and the quantification of attributes of primary interest, including aperture geometry, degree of fracture penetration and sinusoidal height of partially-penetrating fractures. The robust multivariate regression statistical technique was then applied. The results indicated statistically significant correlation for borehole stage accumulated grout take with several of the measured and calculated fracture parameters. Application of these procedures using imagery and grouting data from exploratory boreholes may provide valuable information on anticipated grout injection volumes for future grouting projects.
Modeling Grout Injection Volume in Fractured Rock Using Borehole Imagery
Elledge, Bryan S. (author) / Dubeau, Michael (author) / Heenan, Douglas M. (author)
Proceedings of the Fourth International Conference on Grouting and Deep Mixing ; 2012 ; New Orleans, Louisiana, United States
Grouting and Deep Mixing 2012 ; 1055-1064
2012-08-17
Conference paper
Electronic Resource
English
Grouting , Highways and roads , Chemical grouting , Anchors , Cement , Boreholes , Cracking , Cutoffs , Imaging techniques , Piles , Mixing , Rocks , Foundations , Hydraulic structures
Modeling Grout Injection Volume in Fractured Rock Using Borehole Imagery
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