Two-phase flow experiments in natural rock fractures from Yucca Mountain

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Description

The welded tuffs in the vadose zone of Yucca Mountain, Nevada, are being investigated as the potential site of a geologic repository for high-level nuclear wastes. The suitability of this site depends upon minimizing the possibility of aqueous transport of radionuclides from the wastes to the environment. The repository location has been chosen for its isolation by low-permeability rock from both the surface and the water table, in a desert area of low precipitation. The welded tuffs have very low permeability, offering protection from flowing groundwater. The repository horizon, although of low permeability, is known to be fractured, suggesting the ... continued below

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32 p.

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Persoff, P. & Pruess, K. September 1, 1995.

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Description

The welded tuffs in the vadose zone of Yucca Mountain, Nevada, are being investigated as the potential site of a geologic repository for high-level nuclear wastes. The suitability of this site depends upon minimizing the possibility of aqueous transport of radionuclides from the wastes to the environment. The repository location has been chosen for its isolation by low-permeability rock from both the surface and the water table, in a desert area of low precipitation. The welded tuffs have very low permeability, offering protection from flowing groundwater. The repository horizon, although of low permeability, is known to be fractured, suggesting the possibility of fast paths for contaminant transport. As part of the repository evaluation, this study has been undertaken to characterize fractures from Yucca Mountain tuffs. Another purpose of this study is to gain insight into pore-level phenomena occurring during multiphase flow in fractures generally. For this reason measurements were made not only in the actual fractures, but also in transparent replicas that reproduce the fracture void geometry. Use of transparent replicas allows observation of displacement phenomena and estimation of fracture saturation.

Physical Description

32 p.

Notes

OSTI as DE96003797

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  • Other Information: PBD: Sep 1995

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  • Other: DE96003797
  • Report No.: LBL--37716
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/187236 | External Link
  • Office of Scientific & Technical Information Report Number: 187236
  • Archival Resource Key: ark:/67531/metadc668161

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 5, 2016, 12:11 p.m.

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Persoff, P. & Pruess, K. Two-phase flow experiments in natural rock fractures from Yucca Mountain, report, September 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc668161/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.