Imperial College London
Alternate

Dr Paula Alejandra Gago

Faculty of Engineering, Department of Earth Science & Engineering

 
 
 
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Contact

 

p.gago

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Gago:2022:10.1007/s00603-022-02885-w,
author = {Gago, P and Konstantinou, C and Biscontin, G and King, P},
doi = {10.1007/s00603-022-02885-w},
journal = {Rock Mechanics and Rock Engineering},
pages = {4565--4575},
title = {A numerical characterisation of unconfined strength of weakly consolidated granular packs and its effect on fluid-driven fracture behaviour},
url = {http://dx.doi.org/10.1007/s00603-022-02885-w},
volume = {55},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Soft or weakly consolidated sand refers to porous materials composed of particles (or grains) weakly held together to form a solid but that can be easily broken when subjected to stress. These materials do not behave as conventional brittle, linear elastic materials and the transition between these two regimes cannot usually be described using poro-elastic models. Furthermore, conventional geotechnical sampling techniques often result in the destruction of the cementation and recovery of sufficient intact core is, therefore, difficult. This paper studies a numerical model that allows us to introduce weak consolidation in granular packs. The model, based on the LIGGGHTS open source project, simply adds an attractive contribution to particles in contact. This simple model allows us to reproduce key elements of the behaviour of the stress observed in compacted sands and clay, as well as in poorly consolidated sandstones. The paper finishes by inspecting the effect of different consolidation levels in fluid-driven fracture behaviour. Numerical results are compared qualitatively against experimental results on bio-cemented sandstones.
AU  - Gago,P
AU  - Konstantinou,C
AU  - Biscontin,G
AU  - King,P
DO  - 10.1007/s00603-022-02885-w
EP  - 4575
PY  - 2022///
SN  - 0723-2632
SP  - 4565
TI  - A numerical characterisation of unconfined strength of weakly consolidated granular packs and its effect on fluid-driven fracture behaviour
T2  - Rock Mechanics and Rock Engineering
UR  - http://dx.doi.org/10.1007/s00603-022-02885-w
UR  - https://link.springer.com/article/10.1007/s00603-022-02885-w
UR  - http://hdl.handle.net/10044/1/96920
VL  - 55
ER  -
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