We present results of numerical simulations of various underground explosions in hard rock geologies. They include chemical explosions conducted at Nevada National Security Site (NNSS) site in granite (SPE Phase I) and New Hampshire (GAS2018). The goal of these experiments was to study the ground motion as well as acoustic signals generated by underground chemical explosion sources at a thoroughly characterized sites to improve monitoring techniques.
Using numerical modeling we investigate the role of various physical factors such as details of the source properties, effects of spall both at the surface and at geologic boundaries, wave reflections at the weathered layer, anisotropy of the rock mass on the observed surface motion and on the generated acoustic signal.
Presenting Author: Oleg Y. Vorobiev
Authors
Oleg Y Vorobiev
Presenting Author Corresponding Author
vorobiev1@llnl.gov
Lawrence Livermore National Laboratory, Pleasanton, California, United States
Presenting Author
Corresponding Author
Anastasia Stroujkova
ana@westongeo.com
Applied Research Associates, Weston Geophysical Group, Lexington, Massachusetts, United States
Numerical Simulations of Surface and Acoustic Wave Generation from Underground Explosions in Hard Rock Geologies