Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles

Abstract Based on the engineering environment where rocks surrounding wellbores in energy storage areas are influenced by high temperature, cool and hot water, thermal stress etc. in the exploitation of hydrothermally geothermal energy, the experimental study on mechanical properties of ring granite...

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Autores principales:	Chun Wang, Xin-ru Li, Mei-zhi Xie, Zu-qiang Xiong, Cheng Wang, Huai-bin Wang, Shuai-fei Zhan, Ya-chao Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/03278206f4fc4c9fada33450a8996678
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spelling	oai:doaj.org-article:03278206f4fc4c9fada33450a89966782021-12-02T16:30:58ZStatic and dynamic failure mechanisms of circular granite under the condition of water-heat cycles10.1038/s41598-021-85314-22045-2322https://doaj.org/article/03278206f4fc4c9fada33450a89966782021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85314-2https://doaj.org/toc/2045-2322Abstract Based on the engineering environment where rocks surrounding wellbores in energy storage areas are influenced by high temperature, cool and hot water, thermal stress etc. in the exploitation of hydrothermally geothermal energy, the experimental study on mechanical properties of ring granite under the static and dynamic loads in the water-heat condition was performed. The experimental results showed that when the ring granite was influenced by the inner diameters, heating temperatures, curing temperatures and heat recovery cycle times, the impact load-strain curves were nonlinear. However, the concave stages, platform stages and cliff-like drop stages appeared in the load-strain curves under the static loads. The radical peak loads decreased exponentially with the growth of the damage factors and the dynamic peak loads were far greater than the static peak loads. By analyzing the damage cracks and broken fragments, it was found that under the static and dynamic radical loads, the cracks generated in the ring specimens were tensile cracks and the failure mode was tensile failure. However, the dynamic failure was more aggressive than the static failure. Then, the apparent deformation modulus was defined to describe the deformation characteristics of ring granite before the radical peak loads. And it is found that the variation law of dynamic apparent deformation modulus is more dispersed than the changes of static apparent deformation modulus. Finally, based on the deformation and failure characteristics of ring granite obtained from the tests, the static and dynamic failure criteria considering whether the cracks along the loading direction were generated in the inner ring wall were deduced and verified by the corresponding tests.Chun WangXin-ru LiMei-zhi XieZu-qiang XiongCheng WangHuai-bin WangShuai-fei ZhanYa-chao HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chun Wang Xin-ru Li Mei-zhi Xie Zu-qiang Xiong Cheng Wang Huai-bin Wang Shuai-fei Zhan Ya-chao Hu Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
description	Abstract Based on the engineering environment where rocks surrounding wellbores in energy storage areas are influenced by high temperature, cool and hot water, thermal stress etc. in the exploitation of hydrothermally geothermal energy, the experimental study on mechanical properties of ring granite under the static and dynamic loads in the water-heat condition was performed. The experimental results showed that when the ring granite was influenced by the inner diameters, heating temperatures, curing temperatures and heat recovery cycle times, the impact load-strain curves were nonlinear. However, the concave stages, platform stages and cliff-like drop stages appeared in the load-strain curves under the static loads. The radical peak loads decreased exponentially with the growth of the damage factors and the dynamic peak loads were far greater than the static peak loads. By analyzing the damage cracks and broken fragments, it was found that under the static and dynamic radical loads, the cracks generated in the ring specimens were tensile cracks and the failure mode was tensile failure. However, the dynamic failure was more aggressive than the static failure. Then, the apparent deformation modulus was defined to describe the deformation characteristics of ring granite before the radical peak loads. And it is found that the variation law of dynamic apparent deformation modulus is more dispersed than the changes of static apparent deformation modulus. Finally, based on the deformation and failure characteristics of ring granite obtained from the tests, the static and dynamic failure criteria considering whether the cracks along the loading direction were generated in the inner ring wall were deduced and verified by the corresponding tests.
format	article
author	Chun Wang Xin-ru Li Mei-zhi Xie Zu-qiang Xiong Cheng Wang Huai-bin Wang Shuai-fei Zhan Ya-chao Hu
author_facet	Chun Wang Xin-ru Li Mei-zhi Xie Zu-qiang Xiong Cheng Wang Huai-bin Wang Shuai-fei Zhan Ya-chao Hu
author_sort	Chun Wang
title	Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
title_short	Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
title_full	Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
title_fullStr	Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
title_full_unstemmed	Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
title_sort	static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/03278206f4fc4c9fada33450a8996678
work_keys_str_mv	AT chunwang staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT xinruli staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT meizhixie staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT zuqiangxiong staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT chengwang staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT huaibinwang staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT shuaifeizhan staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles AT yachaohu staticanddynamicfailuremechanismsofcirculargraniteundertheconditionofwaterheatcycles
_version_	1718383852323340288

Static and dynamic failure mechanisms of circular granite under the condition of water-heat cycles

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