Mechanical analyses of WIPP (Waste Isolation Pilot Plant) disposal rooms backfilled with either crushed salt or crushed salt-bentonite
- RE/SPEC, Inc., Rapid City, SD (USA)
- Sandia National Labs., Albuquerque, NM (USA)
Numerical calculations of disposal room configurations at the Waste Isolation Pilot Plant (WIPP) near Carlsbad, NM are presented. Specifically, the behavior of either crushed salt or a crushed salt-bentonite mixture, when used as a backfill material in disposal rooms, is modeled in conjunction with the creep behavior of the surrounding intact salt. The backfill consolidation model developed at Sandia National Laboratories was implemented into the SPECTROM-32 finite element program. This model includes nonlinear elastic as well as deviatoric and volumetric creep components. Parameters for the models were determined from laboratory tests with deviatoric and hydrostatic loadings. The performance of the intact salt creep model previously implemented into SPECTROM-32 is well documented. Results from the SPECTROM-32 analyses were compared to a similar study conducted by Sandia National Laboratories using the SANCHO finite element program. The calculated deformations and stresses from the SPECTROM-32 and SANCHO analyses agree reasonably well despite differences in constitutive models and modeling methodology. These results provide estimates of the backfill consolidation through time. The trends in the backfill consolidation can then be used to estimate the permeability of the backfill and subsequent radionuclide transport. 4 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6197491
- Report Number(s):
- SAND-90-7086C; CONF-901105-79; ON: DE91006638
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society, Boston, MA (USA), 24 Nov - 1 Dec 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BACKFILLING
S CODES
BENTONITE
CREEP
DEFORMATION
MATHEMATICAL MODELS
RADIOACTIVE WASTE MANAGEMENT
RADIONUCLIDE MIGRATION
SALT DEPOSITS
STRESSES
WIPP
CLAYS
COMPUTER CODES
ENVIRONMENTAL TRANSPORT
FUNCTIONAL MODELS
GEOLOGIC DEPOSITS
MANAGEMENT
MASS TRANSFER
MECHANICAL PROPERTIES
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
PILOT PLANTS
RADIOACTIVE WASTE FACILITIES
UNDERGROUND FACILITIES
US DOE
US ORGANIZATIONS
WASTE MANAGEMENT
052002* - Nuclear Fuels- Waste Disposal & Storage