Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst

Abstract To obtain the similar materials with specific physical and mechanical parameters and adsorption and desorption indexes used in coal and gas outburst simulation tests, pulverized coal was selected as aggregate, and sodium humate was selected as cementing agent and river sand was selected as...

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Autores principales:	Peng Sun, Haitao Sun, Fujin Lin, Xuelin Yang, Wangang Jiang, Winbin Wu, Quanmin Jia
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/50b7593abb8d411ebb54e188ea4ea157
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spelling	oai:doaj.org-article:50b7593abb8d411ebb54e188ea4ea1572021-12-02T16:31:54ZExperimental study on the ratio model of similar materials in the simulation test of coal and gas outburst10.1038/s41598-021-92880-y2045-2322https://doaj.org/article/50b7593abb8d411ebb54e188ea4ea1572021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92880-yhttps://doaj.org/toc/2045-2322Abstract To obtain the similar materials with specific physical and mechanical parameters and adsorption and desorption indexes used in coal and gas outburst simulation tests, pulverized coal was selected as aggregate, and sodium humate was selected as cementing agent and river sand was selected as auxiliary materials. Based on this, orthogonal tests with 6 factors and 5 levels were designed, and the tests of weighing, uniaxial compression, firmness, adsorption and desorption were carried out. The parameters such as density, uniaxial compressive strength, elastic modulus, firmness coefficient and adsorption–desorption index of similar materials with different ratios were obtained, and the sensitivity of each factor was analyzed by range analysis. The influence of various factors on the similar materials was studied, and the ratio model of similar materials was obtained. The reliability of the model was verified, and a complete method for determining the ratio model of similar materials of outburst coal was put forward. The results show that the density of the similar materials increases with the river sand content, and the uniaxial compressive strength and elastic modulus increase significantly with the pulverized coal ratio and sodium humate content, and the firmness coefficient increases linearly with the pulverized coal ratio. The adsorption constant increases linearly with the sodium humate content, while the adsorption constant b decreases linearly with the sodium humate content. The initial elution rate Δp of similar materials increases at first and then decreases with the increase of sodium humate content.Peng SunHaitao SunFujin LinXuelin YangWangang JiangWinbin WuQuanmin JiaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Peng Sun Haitao Sun Fujin Lin Xuelin Yang Wangang Jiang Winbin Wu Quanmin Jia Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
description	Abstract To obtain the similar materials with specific physical and mechanical parameters and adsorption and desorption indexes used in coal and gas outburst simulation tests, pulverized coal was selected as aggregate, and sodium humate was selected as cementing agent and river sand was selected as auxiliary materials. Based on this, orthogonal tests with 6 factors and 5 levels were designed, and the tests of weighing, uniaxial compression, firmness, adsorption and desorption were carried out. The parameters such as density, uniaxial compressive strength, elastic modulus, firmness coefficient and adsorption–desorption index of similar materials with different ratios were obtained, and the sensitivity of each factor was analyzed by range analysis. The influence of various factors on the similar materials was studied, and the ratio model of similar materials was obtained. The reliability of the model was verified, and a complete method for determining the ratio model of similar materials of outburst coal was put forward. The results show that the density of the similar materials increases with the river sand content, and the uniaxial compressive strength and elastic modulus increase significantly with the pulverized coal ratio and sodium humate content, and the firmness coefficient increases linearly with the pulverized coal ratio. The adsorption constant increases linearly with the sodium humate content, while the adsorption constant b decreases linearly with the sodium humate content. The initial elution rate Δp of similar materials increases at first and then decreases with the increase of sodium humate content.
format	article
author	Peng Sun Haitao Sun Fujin Lin Xuelin Yang Wangang Jiang Winbin Wu Quanmin Jia
author_facet	Peng Sun Haitao Sun Fujin Lin Xuelin Yang Wangang Jiang Winbin Wu Quanmin Jia
author_sort	Peng Sun
title	Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
title_short	Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
title_full	Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
title_fullStr	Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
title_full_unstemmed	Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
title_sort	experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/50b7593abb8d411ebb54e188ea4ea157
work_keys_str_mv	AT pengsun experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst AT haitaosun experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst AT fujinlin experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst AT xuelinyang experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst AT wangangjiang experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst AT winbinwu experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst AT quanminjia experimentalstudyontheratiomodelofsimilarmaterialsinthesimulationtestofcoalandgasoutburst
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Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst

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