Thermomechanical repository and shaft response analyses using the CAVS (Cracking And Void Strain) jointed rock model: Draft final report

Technical Report · Mon Dec 01 04:00:00 EST 1986

OSTI ID:6814917

Dial, B W; Maxwell, D E

Numerical studies of the far-field repository and near-field shaft response for a nuclear waste repository in bedded salt have been performed with the STEALTH computer code using the CAVS model for jointed rock. CAVS is a constitutive model that can simulate the slip and dilatancy of fracture planes in a jointed rock mass. The initiation and/or propagation of fractures can also be modeled when stress intensity criteria are met. The CAVS models are based on the joint models proposed with appropriate modifications for numerical simulations. The STEALTH/CAVS model has been previously used to model (1) explosive fracturing of a wellbore, (2) earthquake effects on tunnels in a generic nuclear waste repository, (3) horizontal emplacement for a nuclear waste repository in jointed granite, and (4) tunnel response in jointed rock. The use of CAVS to model far-field repository and near-field shaft response was different from previous approaches because it represented a spatially oriented approach to rock response and failure, rather than the traditional stress invariant formulation for yielding. In addition, CAVS tracked the response of the joint apertures to the time-dependent stress changes in the far-field repository and near-field shaft regions. 28 refs., 21 figs., 11 tabs.

• Research Organization: Battelle Memorial Inst., Columbus, OH (USA). Office of Nuclear Waste Isolation; Science Applications International Corp., San Francisco, CA (USA)
• DOE Contract Number: AC02-87CH10290
• OSTI ID: 6814917
• Report Number(s): BMI/ONWI/C-212; SAIC-86/1146; ON: TI88016870
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
COMPLIANCE
COMPUTER CODES
FAILURES
GEOLOGIC DEPOSITS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
HIGH-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MATERIALS
MATHEMATICAL MODELS
MECHANICS
NUCLEAR FACILITIES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
REGULATIONS
ROCK MECHANICS
S CODES
SALT DEPOSITS
SITE CHARACTERIZATION
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES