Simulation of rock blasting with the SHALE code
The SHALE code and its special features for simulating rock blasting are described. SHALE first simulates the detonation of the explosive and then follows the effect of the resulting shocks and stress waves on the surrounding rock. A general description is given for SHALE as a finite-difference stress-wave-propagation code, followed by a brief discussion of numerical methods, and a section on the treatment of the explosive. The constitutive model in SHALE is the BCM (Bedded Crack Model), which describes the response of the rock, including fracture. The use of SHALE is illustrated in a discussion of the basic phenomenology of crater blasting, as seen in simulations of field experiments in oil shale. Predicted peak surface velocities are found to agree with field measurements. Comparisons between predicted fracture and observed craters give insight into the relative roles played by shock waves and the high-pressure-explosive product gases. The two-dimensional version of SHALE is being documented and will be available for use by other investigators. A three-dimensional version is planned.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- OSTI ID:
- 5896455
- Report Number(s):
- LA-UR-83-399; CONF-830806-1; ON: DE83007555
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
040300* -- Oil Shales & Tar Sands-- Drilling
Fracturing & Mining
58 GEOSCIENCES
580300 -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
BITUMINOUS MATERIALS
BLAST EFFECTS
CARBONACEOUS MATERIALS
COMMINUTION
COMPUTER CODES
COMPUTERIZED SIMULATION
CRATERING EXPLOSIONS
ENERGY SOURCES
EXPLOSIONS
EXPLOSIVE FRACTURING
FINITE DIFFERENCE METHOD
FOSSIL FUELS
FRACTURING
FUELS
ITERATIVE METHODS
MATERIALS
NUMERICAL SOLUTION
OIL SHALES
ROCKS
SIMULATION
STRESSES
WAVE PROPAGATION