Imperial College London
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Dr Adriana Paluszny

Faculty of Engineering, Department of Earth Science & Engineering

Reader in Computational Geomechanics
 
 
 
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Contact

 

+44 (0)20 7594 7435apaluszn

 
 
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Location

 

RSM 2.48Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lang:2018:10.1029/2018WR023189,
author = {Lang, P and Paluszny, Rodriguez A and Morteza, N and Zimmerman, R},
doi = {10.1029/2018WR023189},
journal = {Water Resources Research},
pages = {8734--8755},
title = {Relationship between the orientation of maximum permeability and intermediate principal stress in fractured rocks},
url = {http://dx.doi.org/10.1029/2018WR023189},
volume = {54},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Flow and transport properties of fractured rock masses are a function of geometrical structures across many scales. These structures result from physical processes and states and are highly anisotropic in nature. Fracture surfaces often tend to be shifted with respect to each other, which is generally a result of stressinduced displacements. This shift controls the fracture's transmissivity through the pore space that forms from the created mismatch between the surfaces. This transmissivity is anisotropic and greater in the direction perpendicular to the displacement. A contact mechanicsbased, firstprinciple numerical approach is developed to investigate the effects that this shearinduced transmissivity anisotropy has on the overall permeability of a fractured rock mass. Deformation of the rock and contact between fracture surfaces is computed in three dimensions at two scales. At the rock mass scale, fractures are treated as planar discontinuities along which displacements and tractions are resolved. Contact between the individual rough fracture surfaces is solved for each fracture at the small scale to find the stiffness and transmissivity that result from shearinduced dilation and elastic compression. Results show that, given isotropic fracture networks, the direction of maximum permeability of a fractured rock mass tends to be aligned with the direction of the intermediate principal stress. This reflects the fact that fractures have the most pronounced slip in the plane of the maximum and minimum principal stresses, and for individual fractures transmissivity is most pronounced in the direction perpendicular to this slip.
AU  - Lang,P
AU  - Paluszny,Rodriguez A
AU  - Morteza,N
AU  - Zimmerman,R
DO  - 10.1029/2018WR023189
EP  - 8755
PY  - 2018///
SN  - 0043-1397
SP  - 8734
TI  - Relationship between the orientation of maximum permeability and intermediate principal stress in fractured rocks
T2  - Water Resources Research
UR  - http://dx.doi.org/10.1029/2018WR023189
UR  - http://hdl.handle.net/10044/1/65523
VL  - 54
ER  -
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