ORALS
SESSION:
GeomechanicsWedAM-R9
| 2nd Intl Symp on Geomechanics & Applications for Sustainable Development |
| Wed. 30 Nov. 2022 / Room: Similan 2 | |
| Session Chairs: Stan Pietruszczak; Qing Ru Chong; Session Monitor: TBA |
12:20: [GeomechanicsWedAM03] OS Keynote
Gradient modeling for cavities in geomechanics Chengzhi
Qi1 ;
1Beijing University of Civil Engineering and Architecture, Beijing, China;
Paper Id: 304
[Abstract] The gradient approach is applied to discuss disintegration and size effects in cavities and deep level tunnels in geomechanics. Previous results of classical theories are revisited and further extended by adjusting the newly introduced gradient coefficient which multiplies the gradient term and accounts for nonlocality and underlying microstructural heterogeneity. Qualitative comparison with related observations is discussed.
References:
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H.X. Chen, C.Z. Qi, G. Efremidis, M. Dorogov and E..C. Aifantis, Gradient elasticity and size effect for the borehole problem, Acta Mech. 229,3305-3318, 2018.
G. Efremidis, N. Pugno and E.C. Aifantis, A proposition of a “self-consistent” gradient theory. J. Mech. Behav. Mater. 19, 15-29, 2009.
H.X. Chen, C.Z. Qi, S. Wang and M.Y. Wang, A simple gradient model for zonal disintegration of the surrounding rock around a deep circular tunnel, Tunnel. Undergr. Space Technol. 91, 103006, 2019. https://doi.org/10.1016/j.tust.2019/103006.
