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Title: Modeling dynamic fracture in granite under in situ conditions at high temperatures and pressures

Abstract

Reproducing the in situ mechanical response of granite at a depth of a few kilometer under dynamic loading presents significant challenges. We have developed and calibrated a new thermo-mechanical model for granite using extensive experimental data from both quasi-static and dynamic test data. The model includes parameters which can be calibrated for a specific geologic setting. Using the model developed we have performed a series of 2D and 3D simulations to evaluate effects of in situ stress and temperature on the extent of damage surrounding underground explosions. We compare our results with available data for cavity size, plastic zone and peak velocity attenuation with range in granite.

Authors:
 [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1642510
Alternate Identifier(s):
OSTI ID: 1637065
Report Number(s):
LLNL-JRNL-799074
Journal ID: ISSN 1365-1609; 961211
Grant/Contract Number:  
AC52-07NA27344; 15-ERD-010
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
International Journal of Rock Mechanics and Mining Sciences
Additional Journal Information:
Journal Volume: 113; Journal Issue: na; Journal ID: ISSN 1365-1609
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Dynamic fracture; Strength; Thermo-mechanical model of granite

Citation Formats

Vorobiev, Oleg Y., and Morris, Joseph P. Modeling dynamic fracture in granite under in situ conditions at high temperatures and pressures. United States: N. p., 2018. Web. doi:10.1016/j.ijrmms.2018.11.007.
Vorobiev, Oleg Y., & Morris, Joseph P. Modeling dynamic fracture in granite under in situ conditions at high temperatures and pressures. United States. https://doi.org/10.1016/j.ijrmms.2018.11.007
Vorobiev, Oleg Y., and Morris, Joseph P. Tue . "Modeling dynamic fracture in granite under in situ conditions at high temperatures and pressures". United States. https://doi.org/10.1016/j.ijrmms.2018.11.007. https://www.osti.gov/servlets/purl/1642510.
@article{osti_1642510,
title = {Modeling dynamic fracture in granite under in situ conditions at high temperatures and pressures},
author = {Vorobiev, Oleg Y. and Morris, Joseph P.},
abstractNote = {Reproducing the in situ mechanical response of granite at a depth of a few kilometer under dynamic loading presents significant challenges. We have developed and calibrated a new thermo-mechanical model for granite using extensive experimental data from both quasi-static and dynamic test data. The model includes parameters which can be calibrated for a specific geologic setting. Using the model developed we have performed a series of 2D and 3D simulations to evaluate effects of in situ stress and temperature on the extent of damage surrounding underground explosions. We compare our results with available data for cavity size, plastic zone and peak velocity attenuation with range in granite.},
doi = {10.1016/j.ijrmms.2018.11.007},
url = {https://www.osti.gov/biblio/1642510}, journal = {International Journal of Rock Mechanics and Mining Sciences},
issn = {1365-1609},
number = na,
volume = 113,
place = {United States},
year = {2018},
month = {12}
}

Journal Article:

Citation Metrics:
Cited by: 3 works
Citation information provided by
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