Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underground Research Laboratory Grout Trials: Geotomography Results
As part of a grouting test at the Atomic Energy of Canada Limited Underground Research Laboratory, Lawrence Livermore National Laboratory conducted an electromagnetic tomography experiment to evaluate the potential of the technique to detect grout invasion. Changes of the electromagnetic attenuation rate of the rock were detected within the highly permeable altered region of a fracture zone after a jet washing-grouting process was completed. The attenuation rate was observed to decrease near grout hole GH1 and increase near grout hole GH2. The quantity of material removed from the fracture zone by jet washing, as well as the quantity of grout accepted by each borehole was different. It is possible that the observed difference in electromagnetic response at the two locations is dependent upon both grout invasion and the amount of infilling material removed by the jet washing process. The spatial distribution of the changes in attenuation rate near GH1 and GH2 correlate well with the location of the highly permeable region on the fracture zone and with locations where jet washing removed fracture infilling material. 9 refs., 4 figs. (ERA citation 13:035862)
Underground Research Laboratory Grout Trials: Geotomography Results
As part of a grouting test at the Atomic Energy of Canada Limited Underground Research Laboratory, Lawrence Livermore National Laboratory conducted an electromagnetic tomography experiment to evaluate the potential of the technique to detect grout invasion. Changes of the electromagnetic attenuation rate of the rock were detected within the highly permeable altered region of a fracture zone after a jet washing-grouting process was completed. The attenuation rate was observed to decrease near grout hole GH1 and increase near grout hole GH2. The quantity of material removed from the fracture zone by jet washing, as well as the quantity of grout accepted by each borehole was different. It is possible that the observed difference in electromagnetic response at the two locations is dependent upon both grout invasion and the amount of infilling material removed by the jet washing process. The spatial distribution of the changes in attenuation rate near GH1 and GH2 correlate well with the location of the highly permeable region on the fracture zone and with locations where jet washing removed fracture infilling material. 9 refs., 4 figs. (ERA citation 13:035862)
Underground Research Laboratory Grout Trials: Geotomography Results
A. L. Ramirez (Autor:in) / W. D. Daily (Autor:in)
1987
17 pages
Report
Keine Angabe
Englisch
Radioactive Wastes & Radioactivity , Grouting , Image Processing , Low-Level Radioactive Wastes , Tomography , Canada , Detection , Evaluation , Geologic Fractures , Geologic Structures , Granites , Ground Disposal , Intrusion , Radioactive Waste Management , Remote Sensing , ERDA/052002 , ERDA/053000
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