Constitutive Models and Computer Techniques for Ground Motion Predictions
Abstract
The general subroutine (TAMEOS) for generating thermodynamic equations of state for rock-water-void mixes has been used in the 1D SKIPPER code to predict the spherically symmetric ground motion for the Mine Dust HE test in partially saturated tuff. The pre-test calculations are in good agreement with the measured in situ stress and velocity time histories. Planar TAMEOS/SKIPPER parameter calculations are presented which demonstrate the need for explicit treatment of water vaporization in evaluating near surface ground motion effects. An equation of state for granite is developed which includes the coesite-stishovite phase change. Planar and spherical SKIPPER parameter calculations demonstrate that the two-phase equation of state should be used when stresses greater than 70 kbar are involved. The cap model and the Mohr- Coulomb model with kinematic work hardening are generalized to two space dimensions and incorporated into the 2D CRAM code for treating rocks with high shear strength. A continuum model for a regularly jointed rock mass is formulated in terms of the block spacing and the frictional forces on the planes of weakness.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 1973
- Accession Number
- AD0916429
Entities
People
- A. J. Good
- G. A. Frazier
- R. G. Herrmann
- S. K. Garg
- T. D. Riney
Organizations
- Utility Systems Science and Software (United States)