A method of modeling time-dependent rock damage surrounding underground excavations in multiphase groundwater flow

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Description

Underground excavations produce damaged zones surrounding the excavations which have disturbed hydrologic and geomechanical properties. Prediction of fluid flow in these zones must consider both the mechanical and fluid flow processes. Presented here is a methodology which utilizes a mechanical model to predict damage and disturbed rock zone (DRZ) development around the excavation and then uses the predictions to develop time-dependent DRZ porosity relationships. These relationships are then used to adjust the porosity of the DRZ in the fluid flow model based upon the time and distance from the edge of the excavation. The application of this methodology is presented ... continued below

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7 p.

Creation Information

Christian-Frear, T. & Freeze, G. July 1, 1997.

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  • Christian-Frear, T. Sandia National Labs., Albuquerque, NM (United States). Geohydrology Dept.
  • Freeze, G. INTERA Inc., Albuquerque, NM (United States). Geoscience Group

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Underground excavations produce damaged zones surrounding the excavations which have disturbed hydrologic and geomechanical properties. Prediction of fluid flow in these zones must consider both the mechanical and fluid flow processes. Presented here is a methodology which utilizes a mechanical model to predict damage and disturbed rock zone (DRZ) development around the excavation and then uses the predictions to develop time-dependent DRZ porosity relationships. These relationships are then used to adjust the porosity of the DRZ in the fluid flow model based upon the time and distance from the edge of the excavation. The application of this methodology is presented using a site-specific example from the Waste Isolation Pilot Plant, a US Department of Energy facility in bedded salts being evaluated for demonstration of the safe underground disposal of transuranic waste from US defense-related activities.

Physical Description

7 p.

Notes

INIS; OSTI as DE97006890

Source

  • 4. ASCE congress on computing in civil engineering, Philadelphia, PA (United States), 16-18 Jun 1997

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  • Other: DE97006890
  • Report No.: SAND--97-1310C
  • Report No.: CONF-970663--3
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 505295
  • Archival Resource Key: ark:/67531/metadc693279

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • July 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • June 13, 2016, 8:14 p.m.

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Christian-Frear, T. & Freeze, G. A method of modeling time-dependent rock damage surrounding underground excavations in multiphase groundwater flow, article, July 1, 1997; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc693279/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.