Investigation of an empirical creep law for rock salt that uses reduced elastic moduli

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:7052326

Morgan, H S ^[1]; Krieg, R D ^[2]

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1. Sandia National Labs., Albuquerque, NM (USA)
2. Tennessee Univ., Knoxville, TN (USA)

Early attempts to predict the creep response of rock salt around underground rooms at the Waste Isolation Pilot Plant (WIPP) produced closure estimates that were one-third to one-fourth of values measured in situ (Morgan et. al., 1985). A subsequent study (Morgan, et al., 1986) of the WIPP reference elastic secondary creep model (Krieg, 1984) used to make these predictions revealed that room closures and even closure rates could be increased by reducing the elastic constants. This study also indicated that a vertical cylindrical shaft configuration could be substituted for more complicated and expensive rectangular room configurations in studying constitutive parameters for rock salt. Sjaardema and Krieg (1986) used these results to determine how much the WIPP reference value of Young's modulus E had to be reduced to increase the creep closure and closure rate of a hypothetical borehole in rock salt by factors of 3.5 to 4. They found that E had to be divided by 12.5 to produce the desired results. 12 refs., 5 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/RW
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7052326
• Report Number(s): SAND-89-2322; CONF-900646--2; ON: DE90004163
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALPHA-BEARING WASTES
CREEP
DAMAGE
FORECASTING
FRACTURE MECHANICS
FUNCTIONAL MODELS
GEOLOGIC DEPOSITS
GROUND DISPOSAL
HIGH-LEVEL RADIOACTIVE WASTES
HISTORICAL ASPECTS
MANAGEMENT
MATERIALS
MATHEMATICAL MODELS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
PERFORMANCE TESTING
PILOT PLANTS
PRESSURE EFFECTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTES
RECOMMENDATIONS
ROCK MECHANICS
SALT DEPOSITS
SITE CHARACTERIZATION
STRESS ANALYSIS
TECHNOLOGY ASSESSMENT
TESTING
TUNNELS
UNDERGROUND FACILITIES
US DOE
US ORGANIZATIONS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WIPP