Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata

In order to meet the security and high-efficiency production needs, high-strength bolt (cable) reinforcement technology is usually used to maintain the stability of roadways. However, due to the great variability of lithology and mechanical properties, the failure form and stability of the layered r...

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Autores principales:	Kai Wang, Bao-gui Yang, Zhong-kui Wang, Xiao-long Wang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi-Wiley 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/b9bb4e6adc2c4bf9ac5782c33eb29f68
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spelling	oai:doaj.org-article:b9bb4e6adc2c4bf9ac5782c33eb29f682021-11-08T02:36:17ZAnalytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata1468-812310.1155/2021/6669234https://doaj.org/article/b9bb4e6adc2c4bf9ac5782c33eb29f682021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/6669234https://doaj.org/toc/1468-8123In order to meet the security and high-efficiency production needs, high-strength bolt (cable) reinforcement technology is usually used to maintain the stability of roadways. However, due to the great variability of lithology and mechanical properties, the failure form and stability of the layered roof in coal roadways are significant differences. The traditional supporting design method of the layered roof support in coal roadways is the engineering analogy method, which depends on experiences rather than theoretical analysis. Based on the theory of the elastic foundation beam and key stratum, this paper establishes a simplified analytical model of layered roof strata in coal roadways. Based on the Mohr-Coulomb theory, this paper gives the failure criteria of the layered roof strata, and the failure range of the layered roof strata is obtained. The length and pretightening force of bolt (cables) of the layered roof strata can be calculated based on the suspension theory and composite beam theory, which providing a quantitative theoretical basis for the determination of supporting parameters. Finally, as a case, the layered roof strata failure range and supporting parameters of the S1301 auxiliary transportation roadway in Gucheng coal mine are calculated.Kai WangBao-gui YangZhong-kui WangXiao-long WangHindawi-WileyarticleGeologyQE1-996.5ENGeofluids, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 Kai Wang Bao-gui Yang Zhong-kui Wang Xiao-long Wang Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata
description	In order to meet the security and high-efficiency production needs, high-strength bolt (cable) reinforcement technology is usually used to maintain the stability of roadways. However, due to the great variability of lithology and mechanical properties, the failure form and stability of the layered roof in coal roadways are significant differences. The traditional supporting design method of the layered roof support in coal roadways is the engineering analogy method, which depends on experiences rather than theoretical analysis. Based on the theory of the elastic foundation beam and key stratum, this paper establishes a simplified analytical model of layered roof strata in coal roadways. Based on the Mohr-Coulomb theory, this paper gives the failure criteria of the layered roof strata, and the failure range of the layered roof strata is obtained. The length and pretightening force of bolt (cables) of the layered roof strata can be calculated based on the suspension theory and composite beam theory, which providing a quantitative theoretical basis for the determination of supporting parameters. Finally, as a case, the layered roof strata failure range and supporting parameters of the S1301 auxiliary transportation roadway in Gucheng coal mine are calculated.
format	article
author	Kai Wang Bao-gui Yang Zhong-kui Wang Xiao-long Wang
author_facet	Kai Wang Bao-gui Yang Zhong-kui Wang Xiao-long Wang
author_sort	Kai Wang
title	Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata
title_short	Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata
title_full	Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata
title_fullStr	Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata
title_full_unstemmed	Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata
title_sort	analytical solution for the deformation and support parameters of coal roadway in layered roof strata
publisher	Hindawi-Wiley
publishDate	2021
url	https://doaj.org/article/b9bb4e6adc2c4bf9ac5782c33eb29f68
work_keys_str_mv	AT kaiwang analyticalsolutionforthedeformationandsupportparametersofcoalroadwayinlayeredroofstrata AT baoguiyang analyticalsolutionforthedeformationandsupportparametersofcoalroadwayinlayeredroofstrata AT zhongkuiwang analyticalsolutionforthedeformationandsupportparametersofcoalroadwayinlayeredroofstrata AT xiaolongwang analyticalsolutionforthedeformationandsupportparametersofcoalroadwayinlayeredroofstrata
_version_	1718443131450425344

Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata

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