Effect of thermal cycling on mechanical properties and energy evolution of sandstone

In geothermal energy exploration, the reservoir rock is always subjected to thermal cycles and its physical properties will be seriously affected. In this paper, the changes of the internal structure of the sandstone after the thermal cycle are firstly evaluated by ultrasonic tests. Then, u...

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Main Authors:	Hou Peng, Gao Lin, Xing Yan, Zhang Zhao-Peng
Format:	Article
Language:	English
Published:	VINCA Institute of Nuclear Sciences 2020-01-01
Series:	Thermal Science
Subjects:	geothermal energy sandstone thermal cycling energy evolution mechanical properties
Online Access:	http://www.doiserbia.nb.rs/img/doi/0354-9836/2020/0354-98362006001H.pdf

id	doaj-a21dd868e71c49d6af51e0da77dbe094
record_format	Article
spelling	doaj-a21dd868e71c49d6af51e0da77dbe0942021-02-05T08:41:46ZengVINCA Institute of Nuclear SciencesThermal Science0354-98362334-71632020-01-01246 Part B4001400910.2298/TSCI2006001H0354-98362006001HEffect of thermal cycling on mechanical properties and energy evolution of sandstoneHou Peng0Gao Lin1Xing Yan2Zhang Zhao-Peng3State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu Province, China + State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu Province, China + Key Laboratory of Deep Earth Science and Engineering (Sichuan University), Ministry of Education, Chengdu, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu Province, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu Province, ChinaKey Laboratory of Deep Earth Science and Engineering (Sichuan University), Ministry of Education, Chengdu, ChinaIn geothermal energy exploration, the reservoir rock is always subjected to thermal cycles and its physical properties will be seriously affected. In this paper, the changes of the internal structure of the sandstone after the thermal cycle are firstly evaluated by ultrasonic tests. Then, uniaxial compression tests are conducted on the treated specimens. The effects of the thermal cycling on mechanical properties and energy evolution law of the sandstone are analyzed. The results show that the density, P-wave velocity and mechanical properties of the sandstone reduced with the increase in the thermal cycle, especially in the high temperature cycle. The increase of the temperature in the thermal cycle can increase the influence of the thermal cycle on the energy evolution law.http://www.doiserbia.nb.rs/img/doi/0354-9836/2020/0354-98362006001H.pdfgeothermal energysandstonethermal cyclingenergy evolutionmechanical properties
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hou Peng Gao Lin Xing Yan Zhang Zhao-Peng
spellingShingle	Hou Peng Gao Lin Xing Yan Zhang Zhao-Peng Effect of thermal cycling on mechanical properties and energy evolution of sandstone Thermal Science geothermal energy sandstone thermal cycling energy evolution mechanical properties
author_facet	Hou Peng Gao Lin Xing Yan Zhang Zhao-Peng
author_sort	Hou Peng
title	Effect of thermal cycling on mechanical properties and energy evolution of sandstone
title_short	Effect of thermal cycling on mechanical properties and energy evolution of sandstone
title_full	Effect of thermal cycling on mechanical properties and energy evolution of sandstone
title_fullStr	Effect of thermal cycling on mechanical properties and energy evolution of sandstone
title_full_unstemmed	Effect of thermal cycling on mechanical properties and energy evolution of sandstone
title_sort	effect of thermal cycling on mechanical properties and energy evolution of sandstone
publisher	VINCA Institute of Nuclear Sciences
series	Thermal Science
issn	0354-9836 2334-7163
publishDate	2020-01-01
description	In geothermal energy exploration, the reservoir rock is always subjected to thermal cycles and its physical properties will be seriously affected. In this paper, the changes of the internal structure of the sandstone after the thermal cycle are firstly evaluated by ultrasonic tests. Then, uniaxial compression tests are conducted on the treated specimens. The effects of the thermal cycling on mechanical properties and energy evolution law of the sandstone are analyzed. The results show that the density, P-wave velocity and mechanical properties of the sandstone reduced with the increase in the thermal cycle, especially in the high temperature cycle. The increase of the temperature in the thermal cycle can increase the influence of the thermal cycle on the energy evolution law.
topic	geothermal energy sandstone thermal cycling energy evolution mechanical properties
url	http://www.doiserbia.nb.rs/img/doi/0354-9836/2020/0354-98362006001H.pdf
work_keys_str_mv	AT houpeng effectofthermalcyclingonmechanicalpropertiesandenergyevolutionofsandstone AT gaolin effectofthermalcyclingonmechanicalpropertiesandenergyevolutionofsandstone AT xingyan effectofthermalcyclingonmechanicalpropertiesandenergyevolutionofsandstone AT zhangzhaopeng effectofthermalcyclingonmechanicalpropertiesandenergyevolutionofsandstone
_version_	1724283868295462912

Effect of thermal cycling on mechanical properties and energy evolution of sandstone

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