Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst

Abstract Rock burst is one of the most serious dynamic disasters in the process of coal resources mining, in order to study its occurrence mechanism and the characteristics of its impact on roadways. Based on the No. 25110 working face of Yuejin Mine in Yi Coal Mine and No. 21032 return air uphill e...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yushun Yang, Sijiang Wei, Kui Li
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	dynamic failure characteristics energy gradient criterion inversion analysis rock burst Technology T Science Q
Acceso en línea:	https://doaj.org/article/f342f2fd06c5400dbf92eb0a0907052f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f342f2fd06c5400dbf92eb0a0907052f
record_format	dspace
spelling	oai:doaj.org-article:f342f2fd06c5400dbf92eb0a0907052f2021-12-02T05:24:30ZInverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst2050-050510.1002/ese3.977https://doaj.org/article/f342f2fd06c5400dbf92eb0a0907052f2021-12-01T00:00:00Zhttps://doi.org/10.1002/ese3.977https://doaj.org/toc/2050-0505Abstract Rock burst is one of the most serious dynamic disasters in the process of coal resources mining, in order to study its occurrence mechanism and the characteristics of its impact on roadways. Based on the No. 25110 working face of Yuejin Mine in Yi Coal Mine and No. 21032 return air uphill event in Qianqiu Mine, combined with geological conditions, shock location, and source waveform, this paper uses numerical simulation to inverse the dynamic response characteristics of roadway surrounding rock under rock burst. The results show that the plastic strain energy density of No. 25110 working face in Yuejin Mine is mainly distributed around the roadway, and the maximum plastic strain energy density is 3.30 × 107 J at 75 ms, all rock masses around the roadway are damaged, and the maximum damage variable value is 0.44. The plastic strain energy density of No. 21032 return air uphill in Qianqiu mine is mainly distributed around the lower side of the roadway, and the maximum plastic strain energy density is 2.68 × 108 J at 80 ms, all rock masses around the roadway are damaged, and the maximum damage variable value is 1.76, indicating that the rock masses at the roof and two sides of the roadway have been damaged after the impact. Based on the results of numerical simulation, the energy gradient criterion of rock burst tendency was proposed, the degree of energy accumulation of surrounding rock is measured by the change amplitude of energy gradient, and the tendency index of rock burst is quantified, which provides a new method for the prediction of rock burst.Yushun YangSijiang WeiKui LiWileyarticledynamic failure characteristicsenergy gradient criterioninversion analysisrock burstTechnologyTScienceQENEnergy Science & Engineering, Vol 9, Iss 12, Pp 2298-2310 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dynamic failure characteristics energy gradient criterion inversion analysis rock burst Technology T Science Q
spellingShingle	dynamic failure characteristics energy gradient criterion inversion analysis rock burst Technology T Science Q Yushun Yang Sijiang Wei Kui Li Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
description	Abstract Rock burst is one of the most serious dynamic disasters in the process of coal resources mining, in order to study its occurrence mechanism and the characteristics of its impact on roadways. Based on the No. 25110 working face of Yuejin Mine in Yi Coal Mine and No. 21032 return air uphill event in Qianqiu Mine, combined with geological conditions, shock location, and source waveform, this paper uses numerical simulation to inverse the dynamic response characteristics of roadway surrounding rock under rock burst. The results show that the plastic strain energy density of No. 25110 working face in Yuejin Mine is mainly distributed around the roadway, and the maximum plastic strain energy density is 3.30 × 107 J at 75 ms, all rock masses around the roadway are damaged, and the maximum damage variable value is 0.44. The plastic strain energy density of No. 21032 return air uphill in Qianqiu mine is mainly distributed around the lower side of the roadway, and the maximum plastic strain energy density is 2.68 × 108 J at 80 ms, all rock masses around the roadway are damaged, and the maximum damage variable value is 1.76, indicating that the rock masses at the roof and two sides of the roadway have been damaged after the impact. Based on the results of numerical simulation, the energy gradient criterion of rock burst tendency was proposed, the degree of energy accumulation of surrounding rock is measured by the change amplitude of energy gradient, and the tendency index of rock burst is quantified, which provides a new method for the prediction of rock burst.
format	article
author	Yushun Yang Sijiang Wei Kui Li
author_facet	Yushun Yang Sijiang Wei Kui Li
author_sort	Yushun Yang
title	Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
title_short	Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
title_full	Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
title_fullStr	Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
title_full_unstemmed	Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
title_sort	inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/f342f2fd06c5400dbf92eb0a0907052f
work_keys_str_mv	AT yushunyang inverseanalysisofdynamicfailurecharacteristicsofroadwaysurroundingrockunderrockburst AT sijiangwei inverseanalysisofdynamicfailurecharacteristicsofroadwaysurroundingrockunderrockburst AT kuili inverseanalysisofdynamicfailurecharacteristicsofroadwaysurroundingrockunderrockburst
_version_	1718400448299270144

Inverse analysis of dynamic failure characteristics of roadway surrounding rock under rock burst

Ejemplares similares