Excavation design in rock salt: Laboratory experiments, material modelling and validations

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6410724

Wawersik, W R; Herrmann, W; Montgomery, S T; Lauson, H S

The design of a radioactive waste isolation facility and of oil storage caverns in rock salt deposits in the US is supported by thermo-structural design calculations using a variety of finite element codes. Prerequisites for the successful application of such calculations are described: (1) Laboratory measurements of the time-dependent behavior of rock salt; (2) data smoothing, statistical data analyses and constitutive modelling of rock salt creep; and (3) testing of design predictions against independent measurements which were made both in the laboratory and in situ. Time-dependent rock salt properties were measured in single and multistage triaxial creep experiments up to 21 MPa confining pressure, 41 MPa principal stress difference (deviator stress) and 200/sup 0/C temperature. Measurements included continuous records of stress, shear strain and volumetric strain with a resolution of strain rates to 2 x 10/sup -11/ 1/s.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6410724
• Report Number(s): SAND-81-1167C; CONF-810698-1; ON: DE81023164
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
024000 -- Petroleum-- Storage-- (-1989)
052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
58 GEOSCIENCES
580300 -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
CAVITIES
CREEP
DATA PROCESSING
ENERGY SOURCES
FINITE ELEMENT METHOD
FOSSIL FUELS
FUELS
MANAGEMENT
MECHANICAL PROPERTIES
MECHANICS
NUMERICAL SOLUTION
PETROLEUM
PROCESSING
RADIOACTIVE WASTE DISPOSAL
ROCK MECHANICS
SALT CAVERNS
SALTS
STRAIN RATE
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE MANAGEMENT