A damage mechanics approach to modeling failure in Greywacke rock
Pogacnik, Justin McNamara, David D. O’Sullivan, Mike O’Sullivan, John
Pogacnik, Justin
McNamara, David D.
O’Sullivan, Mike
O’Sullivan, John
Loading...
Identifiers
http://hdl.handle.net/10379/6709
https://doi.org/10.13025/15470
https://doi.org/10.13025/15470
Repository DOI
Publication Date
2014
Type
Conference Paper
Downloads
Citation
Pogacnik, Justin, McNamara, David D., O’Sullivan, Mike , & O’Sullivan, John (2014). A Damage Mechanics Approach to Modeling Failure in Greywacke Rock Paper presented at the 36th New Zealand Geothermal Workshop, Auckland.
Abstract
Fracture networks within greywacke basement rocks often control fluid flow in geothermal reservoirs in New Zealand. Thermal, hydrological, chemical, and mechanical processes affect the evolution of these fracture networks. Damage mechanics offers a framework that can be used in the numerical modeling of failure and permeability evolution of geothermal rocks. However, no damage mechanics model has been utilized to describe the complex mechanical behavior of greywacke basement rock. In this work, we apply a damage mechanics THM simulation technique to model stress-strain data for greywacke rock from laboratory uniaxial compression and confined compression tests. Calibration of solid mechanics properties for greywacke rock in THM modeling is a necessary step in the simulation of damage and permeability evolution for heat transport in enhanced geothermal systems.
Funder
Publisher
New Zealand Geothermal Workshop
Publisher DOI
Rights
Attribution-NonCommercial-NoDerivs 3.0 Ireland