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

Journal Article · 17 December 2018 · International Journal of Rock Mechanics and Mining Sciences

DOI: https://doi.org/10.1016/j.ijrmms.2018.11.007 · OSTI ID:1642510

Vorobiev, Oleg Y. ^[1]; Morris, Joseph P. ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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
• OSTI ID: 1642510
• Alternate ID(s): OSTI ID: 1637065
• Report Number(s): LLNL--JRNL-799074; {"Journal ID: ISSN 1365-1609",961211}
• Journal Information: International Journal of Rock Mechanics and Mining Sciences, Journal Name: International Journal of Rock Mechanics and Mining Sciences Journal Issue: na Vol. 113; ISSN 1365-1609
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English