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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Online Access: | https://www.mdpi.com/1996-1073/13/14/3636 |
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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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1724796005179719680 |