Thermally Induced Behavior of the Openings in Rock Mass Affected by High Temperatures
Publication: International Journal of Geomechanics
Volume 11, Issue 2
Abstract
The temporary storage of hot water in openings excavated in rock may be worthwhile for multiple land-use applications, environmental safeguards, and energy conservation. When used for hot water storage, the rock mass around the openings will respond by coupled thermomechanical effects induced by the hot water. In this study, a submergence test of granite and sandstone at 20 and 95°C was used to examine the thermal behavior of the rock mass around the openings to obtain the mechanical properties of uniaxial compressive strength and elastic modulus. A uniaxial compression creep test of the rock at high temperatures was also performed and calculations with various constants for the creep were examined. With the results obtained in this work, the temperature and stress distribution around the openings when hot water is stored was analyzed by considering the creep properties. The thermal behavior and stability of the openings were also examined. The displacement of the openings was predicted to be approximately 2% of the diameter after 1,000 days.
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Acknowledgments
This study was supported by the UNSPECIFIEDResearch Promotion Award of Ehime University and the Grant-in-aid for Young Scientists UNSPECIFIED(B) (20760315). This support is gratefully acknowledged.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 11 • Issue 2 • April 2011
Pages: 124 - 130
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 12, 2009
Accepted: Feb 24, 2010
Published online: Mar 12, 2010
Published in print: Apr 1, 2011
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