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Simulating Infiltration Tests in Fractured Basalt at the Box Canyon Site, Idaho

^a Univ. of Waterloo, Earth Sciences Department, 200 University Ave. West, Waterloo, ON, Canada N2L 3G1
^b Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
^c Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM 87545

View larger version (47K): [in a new window]   Fig. 1. Map of East River Snake River Plain showing the location of the Box Canyon experimental site.

View larger version (80K): [in a new window]   Fig. 2. Elevation of (a) ground surface and (b) top of rubble zone with all well locations and perimeter of the infiltration pond; (c) cross section through upper basalt flow. The "S" series of wells (S-1 to S-4) consist of slanted boreholes whereas the "I," "II," "E," "R," and "T" series of wells are vertical boreholes.

View larger version (26K): [in a new window]   Fig. 3. Plan view of the location of borehole intersections with active water conducting fractures. Open symbols indicate the surface location of a borehole, and shaded symbols indicate the intersection with active water conducting fractures.

View larger version (25K): [in a new window]   Fig. 4. Water saturation profile in Borehole I-1 for the fracture and matrix continua immediately before the 97-1 infiltration test.

View larger version (30K): [in a new window]   Fig. 5. Simulated infiltration front arrival times at sampling points in Borehole I-1 given by water saturation in the fracture and matrix continua using (a) Corey and (b) van Genuchten relative permeability functions.

View larger version (23K): [in a new window]   Fig. 6. Simulated infiltration front arrival time in Borehole I-2 given by water saturation in the fracture and matrix continua using (a) Corey and (b) van Genuchten relative permeability functions.

View larger version (27K): [in a new window]   Fig. 7. Simulated infiltration front arrival time in Borehole T-5 given by water saturation in the fracture and matrix continua using (a) Corey and (b) van Genuchten relative permeability functions.

View larger version (91K): [in a new window]   Fig. 8. Water saturation distribution in the fracture continuum 0.9 d into the 97-2 infiltration test 388 d since the start of 96-1.

View larger version (85K): [in a new window]   Fig. 9. Water saturation distribution in the fracture continuum 2.9 d into the 97-2 infiltration test 390 d since the start of 96-1.