Imperial College London
Portrait Picture

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:2016:10.1016/j.ijrmms.2016.06.004,
author = {Lang, PS and Paluszny, A and Zimmerman, RW},
doi = {10.1016/j.ijrmms.2016.06.004},
journal = {International Journal of Rock Mechanics and Mining Sciences},
pages = {12--22},
title = {Evolution of fracture normal stiffness due to pressure dissolution and precipitation},
url = {http://dx.doi.org/10.1016/j.ijrmms.2016.06.004},
volume = {88},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The normal stiffness of a fracture is a key parameter that controls, for example, rock mass deformability, the change in hydraulic transmissivity due to stress changes, and the speed and attenuation of seismic waves that travel across the fracture. Non-linearity of normal stiffness as a function of stress is often attributed to plastic yield at discrete contacts. Similar surface-altering mechanisms occur due to pressure solution and precipitation over larger timescales. These processes partition the fracture surfaces into a flattened contact region, and a rough free surface that bounds the void space. Under low loads, contact occurs exclusively over the flattened part, leading to rapid, exponential stiffening. At higher loads, contact occurs over the rough surface fraction, leading to the conventional linear increase of stiffness with stress. It follows that a relationship exists between the history of in situ temperature and stress state of a rock fracture, and its subsequent deformation behavior.
AU  - Lang,PS
AU  - Paluszny,A
AU  - Zimmerman,RW
DO  - 10.1016/j.ijrmms.2016.06.004
EP  - 22
PY  - 2016///
SN  - 1873-4545
SP  - 12
TI  - Evolution of fracture normal stiffness due to pressure dissolution and precipitation
T2  - International Journal of Rock Mechanics and Mining Sciences
UR  - http://dx.doi.org/10.1016/j.ijrmms.2016.06.004
UR  - http://hdl.handle.net/10044/1/42054
VL  - 88
ER  -
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