Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.

According to the theories of rockburst based on butterfly-shaped plastic zones, a plane strain mechanical model was established for stress distribution around the holes in homogeneous elastoplastic media. Based on the Mohr-Coulomb yield criterion and the generalized form of Hooke's law, the equ...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Xu Gao, Zhenkai Ma, Haoyu Shi, Jicheng Feng
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4092f1bdc2dd49ff8c709976c18e5118
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4092f1bdc2dd49ff8c709976c18e5118
record_format	dspace
spelling	oai:doaj.org-article:4092f1bdc2dd49ff8c709976c18e51182021-12-02T20:04:49ZEnergy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.1932-620310.1371/journal.pone.0255044https://doaj.org/article/4092f1bdc2dd49ff8c709976c18e51182021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255044https://doaj.org/toc/1932-6203According to the theories of rockburst based on butterfly-shaped plastic zones, a plane strain mechanical model was established for stress distribution around the holes in homogeneous elastoplastic media. Based on the Mohr-Coulomb yield criterion and the generalized form of Hooke's law, the equation for the elastic strain-energy density of units at a 3D stress state was deduced. On this basis, the energy absorption and release in rocks surrounding a roadway during the evolution thereof in a coal reservoir tend to rock bursting were quantified. Through Flac3D 5.0 numerical simulation software, the energy released from a homogeneous circular roadway at different development states of plastic zones was investigated. By investigating conditions at the 21141 working face in Qianqiu Coal Mine, Henan Province, China, subjected to rockburst, a numerical model was established to calculate the energy released by a rockburst working face. The calculated results approximated the data monitored at the outburst site, with the same energy level recorded. The theoretical calculation for energy release from the rock surrounding a roadway is expected to reference engineering practice.Xu GaoZhenkai MaHaoyu ShiJicheng FengPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255044 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xu Gao Zhenkai Ma Haoyu Shi Jicheng Feng Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
description	According to the theories of rockburst based on butterfly-shaped plastic zones, a plane strain mechanical model was established for stress distribution around the holes in homogeneous elastoplastic media. Based on the Mohr-Coulomb yield criterion and the generalized form of Hooke's law, the equation for the elastic strain-energy density of units at a 3D stress state was deduced. On this basis, the energy absorption and release in rocks surrounding a roadway during the evolution thereof in a coal reservoir tend to rock bursting were quantified. Through Flac3D 5.0 numerical simulation software, the energy released from a homogeneous circular roadway at different development states of plastic zones was investigated. By investigating conditions at the 21141 working face in Qianqiu Coal Mine, Henan Province, China, subjected to rockburst, a numerical model was established to calculate the energy released by a rockburst working face. The calculated results approximated the data monitored at the outburst site, with the same energy level recorded. The theoretical calculation for energy release from the rock surrounding a roadway is expected to reference engineering practice.
format	article
author	Xu Gao Zhenkai Ma Haoyu Shi Jicheng Feng
author_facet	Xu Gao Zhenkai Ma Haoyu Shi Jicheng Feng
author_sort	Xu Gao
title	Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
title_short	Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
title_full	Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
title_fullStr	Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
title_full_unstemmed	Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
title_sort	energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/4092f1bdc2dd49ff8c709976c18e5118
work_keys_str_mv	AT xugao energyreleaseinducedrockburstsbasedonbutterflyshapedplasticzonesinroadwaysofcoalreservoirs AT zhenkaima energyreleaseinducedrockburstsbasedonbutterflyshapedplasticzonesinroadwaysofcoalreservoirs AT haoyushi energyreleaseinducedrockburstsbasedonbutterflyshapedplasticzonesinroadwaysofcoalreservoirs AT jichengfeng energyreleaseinducedrockburstsbasedonbutterflyshapedplasticzonesinroadwaysofcoalreservoirs
_version_	1718375536335519744

Energy release induced rockbursts based on butterfly-shaped plastic zones in roadways of coal reservoirs.

Ejemplares similares