CAPILLARY BARRIERS IN UNSATURATED FRACTURED ROCKS

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This work presents modeling studies investigating the effects of capillary barriers on fluid-flow and tracer-transport processes in the unsaturated zone of Yucca Mountain, Nevada, a potential site for storing high-level radioactive waste. These studies are designed to identify factors controlling the formation of capillary barriers and to estimate their effects on the extent of possible large-scale lateral flow in unsaturated fracture rocks. The modeling approach is based on a continuum formulation of coupled multiphase fluid and tracer transport through fractured porous rock. Flow processes in fractured porous rock are described using a dual-continuum concept. In addition, approximate analytical solutions are ... continued below

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Wu, Y.S.; Zhang, W.; Pan, L.; Hinds, J. & Bodvarsson, G. October 1, 2000.

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Description

This work presents modeling studies investigating the effects of capillary barriers on fluid-flow and tracer-transport processes in the unsaturated zone of Yucca Mountain, Nevada, a potential site for storing high-level radioactive waste. These studies are designed to identify factors controlling the formation of capillary barriers and to estimate their effects on the extent of possible large-scale lateral flow in unsaturated fracture rocks. The modeling approach is based on a continuum formulation of coupled multiphase fluid and tracer transport through fractured porous rock. Flow processes in fractured porous rock are described using a dual-continuum concept. In addition, approximate analytical solutions are developed and used for assessing capillary-barrier effects in fractured rocks. This study indicates that under the current hydrogeologic conceptualization of Yucca Mountain, strong capillary-barrier effects exist for significantly diverting moisture flow.

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  • Report No.: LBNL-46876
  • Grant Number: NA
  • DOI: 10.2172/860283 | External Link
  • Office of Scientific & Technical Information Report Number: 860283
  • Archival Resource Key: ark:/67531/metadc780940

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  • October 1, 2000

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Nov. 22, 2016, 9:58 p.m.

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Wu, Y.S.; Zhang, W.; Pan, L.; Hinds, J. & Bodvarsson, G. CAPILLARY BARRIERS IN UNSATURATED FRACTURED ROCKS, report, October 1, 2000; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc780940/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.