Experimental investigation of the hydraulic and heat-transfer properties of artificially fractured granite

Luo J, Zhu Y, Guo Q, Tan L, Zhuang Y, Liu M, Zhang C, Xiang W, Rohn J (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Scientific Reports Nature Publishing Group: Open Access Journals - Option B

Publisher: Nature Publishing Group

Book Volume: 7

DOI: 10.1038/srep39882

Abstract

In this paper, the hydraulic and heat-transfer properties of two sets of artificially fractured granite samples are investigated. First, the morphological information is determined using 3D modelling technology. The area ratio is used to describe the roughness of the fracture surface. Second, the hydraulic properties of fractured granite are tested by exposing samples to different confining pressures and temperatures. The results show that the hydraulic properties of the fractures are affected mainly by the area ratio, with a larger area ratio producing a larger fracture aperture and higher hydraulic conductivity. Both the hydraulic apertureand the hydraulic conductivity decrease with an increase in the confining pressure. Furthermore, the fracture aperture decreases with increasing rock temperature, but the hydraulic conductivity increases owing to a reduction of the viscosity of the fluid flowing through. Finally, the heat-transfer efficiency of the samples under coupled hydro-thermal-mechanical conditions is analysed and discussed. © The Author(s) 2017.

Authors with CRIS profile

Joachim Rohn Professur für Angewandte Geologie und Modellierung von Umweltsystemen

Involved external institutions

China University of Geosciences / 中国地质大学 CN China (CN) State Power Investment Corporation SPIC CN China (CN)

How to cite

APA:

Luo, J., Zhu, Y., Guo, Q., Tan, L., Zhuang, Y., Liu, M.,... Rohn, J. (2017). Experimental investigation of the hydraulic and heat-transfer properties of artificially fractured granite. Scientific Reports, 7. https://dx.doi.org/10.1038/srep39882

MLA:

Luo, Jin, et al. "Experimental investigation of the hydraulic and heat-transfer properties of artificially fractured granite." Scientific Reports 7 (2017).

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