Analysis of emplacement borehole rock and liner behavior for a repository at Yucca Mountain

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Description

This report presents the results of studies aimed at assessing the quasi-static behavior of both the rock surrounding an emplacement borehole and the lining within an emplacement borehole for a nuclear waste repository in tuff. Two-dimensional thermomechanical analyses of conditions similar to those representative of the horizontal emplacement option were performed using a distinct element code. Three different behavior models (equivalent continuum, wedge, and parallel joint) were used to investigate the state of deformation at 0 and 100 years following waste emplacement. Three different rock strength assumptions were studied corresponding to ``design,`` ``recommended`` and ``limit`` values given in the Nevada ... continued below

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Medium: P; Size: 137 p.

Creation Information

Lorig, L. J. & Dasgupta, B. September 1, 1989.

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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. It has been viewed 39 times . More information about this report can be viewed below.

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Description

This report presents the results of studies aimed at assessing the quasi-static behavior of both the rock surrounding an emplacement borehole and the lining within an emplacement borehole for a nuclear waste repository in tuff. Two-dimensional thermomechanical analyses of conditions similar to those representative of the horizontal emplacement option were performed using a distinct element code. Three different behavior models (equivalent continuum, wedge, and parallel joint) were used to investigate the state of deformation at 0 and 100 years following waste emplacement. Three different rock strength assumptions were studied corresponding to ``design,`` ``recommended`` and ``limit`` values given in the Nevada Nuclear Waste Storage Investigation (NNWSI) Project Site Characterization Plan Conceptual Design Report (MacDougall et al., 1987). The ground reaction curve concept is introduced to study the potential liner loading resulting from thermally induced borehole closure. The report concludes that for the conditions and parameters assumed, liners may not be significantly loaded by borehole closure, because predicted closures will likely be less than tolerances required to install the lining. The report also concludes that gravity loading of linings by blocks which fall from the surrounding rock should not over-stress the lining. 25 refs., 51 figs., 14 tabs.

Physical Description

Medium: P; Size: 137 p.

Notes

INIS; OSTI as TI90000039

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  • Other Information: PBD: Sep 1989

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  • Other: TI90000039
  • Report No.: NUREG/CR--5427
  • DOI: 10.2172/137527 | External Link
  • Office of Scientific & Technical Information Report Number: 137527
  • Archival Resource Key: ark:/67531/metadc626508

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • September 1, 1989

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

Description Last Updated

  • March 14, 2018, 1:21 p.m.

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Lorig, L. J. & Dasgupta, B. Analysis of emplacement borehole rock and liner behavior for a repository at Yucca Mountain, report, September 1, 1989; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc626508/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.