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

Journal Article · · International Journal of Rock Mechanics and Mining Sciences
 [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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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.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; 15-ERD-010
OSTI ID:
1642510
Alternate ID(s):
OSTI ID: 1637065
Report Number(s):
LLNL-JRNL-799074; 961211
Journal Information:
International Journal of Rock Mechanics and Mining Sciences, Vol. 113, Issue na; ISSN 1365-1609
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (16)

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Table 1(p. 17)table Table 1
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Table 2(p. 36)table Table 2
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Figure 14(p. 38)figure Figure 14

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Related Subjects

58 GEOSCIENCES
Dynamic fracture
Strength
Thermo-mechanical model of granite