Calculation of density and permeability of compacted crushed salt within an engineered shaft sealing system

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Description

Crushed salt from the host Salado Formation is proposed as a sealing material in one component of a multicomponent seal system design for the shafts of the Waste Isolation Pilot Plant (WIPP), a mined geological repository for storage and disposal of transuranic radioactive wastes located near Carlsbad, New Mexico. The crushed salt will be compacted and placed at a density approaching 90% of the intact density of the host Salado salt. Creep closure of the shaft will further compact the crushed salt over time, thereby reducing the crushed-salt permeability from the initial state and creating an effective long-term seal. A ... continued below

Physical Description

9 p.

Creation Information

Loken, M. & Statham, W. July 1, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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Authors

  • Loken, M. RE/SPEC Inc., Rapid City, SD (United States)
  • Statham, W. Intera Inc., Austin, TX (United States)

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Publisher

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

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Description

Crushed salt from the host Salado Formation is proposed as a sealing material in one component of a multicomponent seal system design for the shafts of the Waste Isolation Pilot Plant (WIPP), a mined geological repository for storage and disposal of transuranic radioactive wastes located near Carlsbad, New Mexico. The crushed salt will be compacted and placed at a density approaching 90% of the intact density of the host Salado salt. Creep closure of the shaft will further compact the crushed salt over time, thereby reducing the crushed-salt permeability from the initial state and creating an effective long-term seal. A structural model and a fluid flow model have been developed to provide an estimate of crushed-salt reconsolidation rate as a function of depth, time, and pore pressure. Model results are obtained in terms of crushed-salt permeability as a function of time and depth within the salt column. Model results indicate that average salt column permeability will be reduced to 3.3 {times} 10{sup {minus}20} m{sup 2} in about 100 years, which provides for an acceptable long-term seal component.

Physical Description

9 p.

Notes

INIS; OSTI as DE97006889

Source

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

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Identifier

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  • Other: DE97006889
  • Report No.: SAND--97-1311C
  • Report No.: CONF-970663--4
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/505294 | External Link
  • Office of Scientific & Technical Information Report Number: 505294
  • Archival Resource Key: ark:/67531/metadc694299

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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 14, 2016, 6:45 p.m.

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Citations, Rights, Re-Use

Loken, M. & Statham, W. Calculation of density and permeability of compacted crushed salt within an engineered shaft sealing system, report, July 1, 1997; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc694299/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.