An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution

The estimation of rockburst potential has attracted great attention in the field of rock mechanics and engineering. In this study, an original energy preservation index is proposed to evaluate the rockburst potential in view of the energy evolution characteristics of rock materials. To investigate t...

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Main Authors:	Lin Gao, Feng Gao, Yan Xing, Zhizhen Zhang
Format:	Article
Language:	English
Published:	MDPI AG 2020-07-01
Series:	Energies
Subjects:	rockburst potential energy evolution energy preservation index cyclic loading–unloading test
Online Access:	https://www.mdpi.com/1996-1073/13/14/3636

id	doaj-1a7a321fced244968f2d79b2c77acb2d
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spelling	doaj-1a7a321fced244968f2d79b2c77acb2d2020-11-25T02:37:14ZengMDPI AGEnergies1996-10732020-07-01133636363610.3390/en13143636An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy EvolutionLin Gao0Feng Gao1Yan Xing2Zhizhen Zhang3School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaThe estimation of rockburst potential has attracted great attention in the field of rock mechanics and engineering. In this study, an original energy preservation index is proposed to evaluate the rockburst potential in view of the energy evolution characteristics of rock materials. To investigate the energy evolution during rock deformation and failure, a number of cyclic uniaxial compression experiments on five kinds of rocks were carried out. The results showed that the curves of energy evolution exhibited obvious stages and there were significantly different weakening degrees for different rock materials embodied by the decreasing degrees of the ratios of elastic strain energy to dissipated strain energy at the weakening stage. Then, the energy preservation index was further formulated based on the decreasing ratio. Furthermore, by analyzing the acoustic emission activities at the failure stage and failure modes of the five rock materials, the rockburst potential was analyzed according to the energy preservation index.https://www.mdpi.com/1996-1073/13/14/3636rockburst potentialenergy evolutionenergy preservation indexcyclic loading–unloading test
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Lin Gao Feng Gao Yan Xing Zhizhen Zhang
spellingShingle	Lin Gao Feng Gao Yan Xing Zhizhen Zhang An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution Energies rockburst potential energy evolution energy preservation index cyclic loading–unloading test
author_facet	Lin Gao Feng Gao Yan Xing Zhizhen Zhang
author_sort	Lin Gao
title	An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution
title_short	An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution
title_full	An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution
title_fullStr	An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution
title_full_unstemmed	An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution
title_sort	energy preservation index for evaluating the rockburst potential based on energy evolution
publisher	MDPI AG
series	Energies
issn	1996-1073
publishDate	2020-07-01
description	The estimation of rockburst potential has attracted great attention in the field of rock mechanics and engineering. In this study, an original energy preservation index is proposed to evaluate the rockburst potential in view of the energy evolution characteristics of rock materials. To investigate the energy evolution during rock deformation and failure, a number of cyclic uniaxial compression experiments on five kinds of rocks were carried out. The results showed that the curves of energy evolution exhibited obvious stages and there were significantly different weakening degrees for different rock materials embodied by the decreasing degrees of the ratios of elastic strain energy to dissipated strain energy at the weakening stage. Then, the energy preservation index was further formulated based on the decreasing ratio. Furthermore, by analyzing the acoustic emission activities at the failure stage and failure modes of the five rock materials, the rockburst potential was analyzed according to the energy preservation index.
topic	rockburst potential energy evolution energy preservation index cyclic loading–unloading test
url	https://www.mdpi.com/1996-1073/13/14/3636
work_keys_str_mv	AT lingao anenergypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT fenggao anenergypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT yanxing anenergypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT zhizhenzhang anenergypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT lingao energypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT fenggao energypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT yanxing energypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution AT zhizhenzhang energypreservationindexforevaluatingtherockburstpotentialbasedonenergyevolution
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An Energy Preservation Index for Evaluating the Rockburst Potential Based on Energy Evolution

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