Dynamic analysis and criterion evaluation on rockburst considering the fractured dissipative energy
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Date
2019
Authors
Li, Q.
Chen, L.
Sui, Z.
Wang, L.
Dong, J.
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Advances in Mechanical Engineering, 2019; 11(3):1-12
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As one of the dynamic disasters of deep mining, rockburst significantly affects the safety of underground environment especially at great depth. First, the elastic energy and dissipative energy are deduced to characterize rockburst process separately employing the theoretical analysis and test technique. Then, a series of split-Hopkinson pressure bar system tests are conducted. After calculation, the percentage of fractured dissipative energy occupied in total input dynamic energy is obtained. Subsequently, the dynamic mechanical parameters of rock specimens and dynamic impact factors are fitted. Finally, a three-dimensional model is developed using the mechanical property of the host rock, constitutive model, and in situ geostress. The contours of energy and the damage conditions of host rock are predicted, and the tendentiousness of rockburst is estimated
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Copyright 2019 The author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 License(http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work withoutfurther permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage) (http://www.creativecommons.org/licenses/by/4.0/)