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The Active Fracture Model

Its Relation to Fractal Flow Patterns and an Evaluation Using Field Observations

Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA

View larger version (14K): [in a new window]   Fig. 1. Demonstration of the "box" counting procedure for several box sizes.

View larger version (9K): [in a new window]   Fig. 2. Relation between the number of boxes (N), covering at least one intersection between coated fractures and the survey line, as a function of box size l. The solid line corresponds to a power function (with a power of -0.5) used to fit the data points.

View larger version (17K): [in a new window]   Fig. 3. Comparisons between simulated water travel times (ages) for rock matrix at boreholes (a) USW UZ-1 and (b) USW SD-12 and the corresponding 14C ages for several values.

View larger version (44K): [in a new window]   Fig. 4. Simulated average portion of active fracture for the TSw formation as a function of infiltration rate and .