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Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst
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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8242100/ https://www.ncbi.nlm.nih.gov/pubmed/34188124 http://dx.doi.org/10.1038/s41598-021-92880-y |
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author | Sun, Peng Sun, Haitao Lin, Fujin Yang, Xuelin Jiang, Wangang Wu, Winbin Jia, Quanmin |
author_facet | Sun, Peng Sun, Haitao Lin, Fujin Yang, Xuelin Jiang, Wangang Wu, Winbin Jia, Quanmin |
author_sort | Sun, Peng |
collection | PubMed |
description | 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 | Online Article Text |
id | pubmed-8242100 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-82421002021-07-06 Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst Sun, Peng Sun, Haitao Lin, Fujin Yang, Xuelin Jiang, Wangang Wu, Winbin Jia, Quanmin Sci Rep Article 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. Nature Publishing Group UK 2021-06-29 /pmc/articles/PMC8242100/ /pubmed/34188124 http://dx.doi.org/10.1038/s41598-021-92880-y Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Sun, Peng Sun, Haitao Lin, Fujin Yang, Xuelin Jiang, Wangang Wu, Winbin Jia, Quanmin Experimental study on the ratio model of similar materials in the simulation test of coal and gas outburst |
title | 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_short | 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 |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8242100/ https://www.ncbi.nlm.nih.gov/pubmed/34188124 http://dx.doi.org/10.1038/s41598-021-92880-y |
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