Determination of unsaturated flow paths in a randomly distributed fracture network

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We present a numerical investigation of steady flow paths in a two-dimensional, unsaturated discrete-fracture network. The fracture network is constructed using field measurement data including fracture density, trace lengths, and orientations from a particular site. The fracture network with a size of 100m x 150m contains more than 20,000 fractures. The steady state unsaturated flow in the fracture network is investigated for different boundary conditions. Simulation results indicate that the flow paths are generally vertical, and horizontal fractures mainly provide pathways between neighboring vertical paths. The simulation results support that the average spacing between flow paths in a layered system ... continued below

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10 pages

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Zhang, Keni; Wu, Yu-Shu; Bodvarsson, G.S. & Liu, Hui-Hai February 17, 2003.

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We present a numerical investigation of steady flow paths in a two-dimensional, unsaturated discrete-fracture network. The fracture network is constructed using field measurement data including fracture density, trace lengths, and orientations from a particular site. The fracture network with a size of 100m x 150m contains more than 20,000 fractures. The steady state unsaturated flow in the fracture network is investigated for different boundary conditions. Simulation results indicate that the flow paths are generally vertical, and horizontal fractures mainly provide pathways between neighboring vertical paths. The simulation results support that the average spacing between flow paths in a layered system tends to increase or flow becomes more focused with depth as long as flow is gravity driven (Liu et al. 2002).

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10 pages

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OSTI as DE00816358

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  • 2003 World Water and Environmental Resource Congress, Philadelphia, PA (US), 06/22/2003--06/26/2003

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  • Report No.: LBNL--52192
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 816358
  • Archival Resource Key: ark:/67531/metadc735950

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  • February 17, 2003

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • April 4, 2016, 12:39 p.m.

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Zhang, Keni; Wu, Yu-Shu; Bodvarsson, G.S. & Liu, Hui-Hai. Determination of unsaturated flow paths in a randomly distributed fracture network, article, February 17, 2003; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc735950/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.