Computer modeling of gas flow and gas loading of rock in a bench blasting environment
- Sandia National Labs., Albuquerque, NM (United States)
- RE/SPEC, Inc., Albuquerque, NM (United States)
Numerical modeling can contribute greatly to an understanding of the physics involved in the blasting process. This paper will describe the latest enhancements to the blast modeling code DMC (Distinct Motion Code) (Taylor and Preece, 1989) and will demonstrate the ability of DMC to model gas flow and rock motion in a bench blasting environment. DMC has been used previously to model rock motion associated with blasting in a cratering environment (Preece and Taylor, 1990) and in confined volume blasting associated with in-situ oil shale retorting (Preece, 1990 a b). These applications of DMC treated the explosive loading as force versus time functions on specific spheres which were adjusted to obtain correct face velocities. It was recognized that a great need in explosives modeling was the coupling of an ability to simulate gas flow with the rock motion simulation capability of DMC. This was accomplished by executing a finite difference code that computes gas flow through a porous media (Baer and Gross, 1989) in conjunction with DMC. The marriage of these two capabilities has been documented by Preece and Knudsen, 1991. The capabilities that have been added recently to DMC and which will be documented in this paper include: (1) addition of a new equation of state for the explosive gases; (2) modeling of gas flow and sphere loading in a bench environment. 8 refs., 5 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5672761
- Report Number(s):
- SAND-91-2160C; CONF-920634--1; ON: DE92000979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
040300* -- Oil Shales & Tar Sands-- Drilling
Fracturing & Mining
58 GEOSCIENCES
580000 -- Geosciences
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
BLAST EFFECTS
COMPUTER CODES
COMPUTERIZED SIMULATION
CORRELATIONS
D CODES
DETONATIONS
EQUATIONS
EQUATIONS OF STATE
EXPLOSIVE FRACTURING
FINITE DIFFERENCE METHOD
FLOW MODELS
FLUID FLOW
FRACTURING
GAS FLOW
ITERATIVE METHODS
MATHEMATICAL MODELS
MECHANICS
NUMERICAL SOLUTION
POROSITY
ROCK BURSTS
ROCK MECHANICS
SIMULATION
SPHERES