Table of Contents Author Guidelines Submit a Manuscript
Geofluids
Volume 2017 (2017), Article ID 4126908, 8 pages
https://doi.org/10.1155/2017/4126908
Research Article

Investigating the Permeability of Marble under Moderate Pressure and Temperature

1State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
2Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China

Correspondence should be addressed to Diansen Yang; nc.ca.msrhw@gnaysd

Received 8 May 2017; Revised 21 July 2017; Accepted 7 August 2017; Published 11 September 2017

Academic Editor: Qinghui Jiang

Copyright © 2017 Jianping Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The permeability of intact marble samples collected from the depth of 1.6 km in southwestern China is investigated under moderate confining pressures and temperatures. No microcracks initiate or propagate during the tests, and the variation of permeability is due to the change of aperture of microcracks. Test results show a considerable decrease of permeability along with confining pressure increase from 10 to 30 MPa and temperature increase from 15 to 40°C. The thermal effect on the permeability is notable in comparison with the influence of the stress. A simple permeability evolution law is developed to correlate the permeability and the porosity in the compressive regime based on the microphysical geometric linkage model. Using this law, the permeability in the compressive regime for crystalline rock can be predicted from the volumetric strain curve of mechanical tests.