Application of a damage model for rock fragmentation to the Straight Creek Mine blast experiments
Early attempts at estimation of stress wave damage due to blasting by use of finite element calculations met with limited success due to numerical instabilities that prevented calculations from being carried past the fragmentation limit. More recently, the improved damage model PRONTO has allowed finite element calculations which remain stable and yield good agreement between calculated fragmented regions and excavated crater profiles for blasting experiments in granite. Application of this damage model to blast experiments at the Straight Creek Mine in Bell County, Kentucky were complicated by anisotropic conditions and uncertainties in material properties. It appears that significant modifications to the damage model and extensive material testing may be necessary in order to estimate damage in these anisotropic materials. 18 refs., 18 figs.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6127818
- Report Number(s):
- SAND-91-0867; ON: DE92003590
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
DAMAGE
P CODES
EXPLOSIVE FRACTURING
GRANITES
FRAGMENTATION
KENTUCKY
COAL MINES
ANISOTROPY
BLAST EFFECTS
COMPUTER PROGRAM DOCUMENTATION
FINITE ELEMENT METHOD
FRACTURE MECHANICS
SANDSTONES
SILTSTONES
STRESSES
COMMINUTION
COMPUTER CODES
DEVELOPED COUNTRIES
FEDERAL REGION IV
FRACTURING
IGNEOUS ROCKS
MECHANICS
MINES
NORTH AMERICA
NUMERICAL SOLUTION
PLUTONIC ROCKS
ROCKS
SEDIMENTARY ROCKS
UNDERGROUND FACILITIES
USA
012000* - Coal
Lignite
& Peat- Mining
360603 - Materials- Properties
990200 - Mathematics & Computers