An improved Burgers creep model of coal based on fractional-order
The instability and destruction of various types of coal pillars left in deep underground mining are frequently attributed to cumulative creep deformation exceeding the permissible limit, with high in situ stress playing a critical role in this phenomenon. To understand the complicated creep behavio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-10-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1277147/full |
| _version_ | 1797644382927585280 |
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| author | Yongjie Yang Gang Huang Yangqiang Zhang Lei Yuan |
| author_facet | Yongjie Yang Gang Huang Yangqiang Zhang Lei Yuan |
| author_sort | Yongjie Yang |
| collection | DOAJ |
| description | The instability and destruction of various types of coal pillars left in deep underground mining are frequently attributed to cumulative creep deformation exceeding the permissible limit, with high in situ stress playing a critical role in this phenomenon. To understand the complicated creep behavior of coal, triaxial compression creep tests were conducted. It has been proven that the coal specimens subjected to high confining pressure exhibit typical three-stage creep characteristics. Furthermore, with the increase in confining pressure, the creep threshold value increases while the creep threshold coefficient decreases. By fitting the creep strain-time results, an improved Burgers creep model based on fractional-order was proposed. This model can describe the primary, secondary, and tertiary stages and reflect the nonlinear behavior, contributing to the understanding of the long-term stability evaluation of deep coal pillars. |
| first_indexed | 2024-03-11T14:29:44Z |
| format | Article |
| id | doaj.art-f489ca35f9bc410c9a59fab18ff44214 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-11T14:29:44Z |
| publishDate | 2023-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-f489ca35f9bc410c9a59fab18ff442142023-10-31T10:39:38ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-10-011110.3389/feart.2023.12771471277147An improved Burgers creep model of coal based on fractional-orderYongjie Yang0Gang Huang1Yangqiang Zhang2Lei Yuan3State Key Laboratory of Strata Intelligent Control and Green Mining Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, ChinaState Key Laboratory of Gas Disaster Monitoring and Emergency Technology, China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing, ChinaState Key Laboratory of Strata Intelligent Control and Green Mining Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaThe instability and destruction of various types of coal pillars left in deep underground mining are frequently attributed to cumulative creep deformation exceeding the permissible limit, with high in situ stress playing a critical role in this phenomenon. To understand the complicated creep behavior of coal, triaxial compression creep tests were conducted. It has been proven that the coal specimens subjected to high confining pressure exhibit typical three-stage creep characteristics. Furthermore, with the increase in confining pressure, the creep threshold value increases while the creep threshold coefficient decreases. By fitting the creep strain-time results, an improved Burgers creep model based on fractional-order was proposed. This model can describe the primary, secondary, and tertiary stages and reflect the nonlinear behavior, contributing to the understanding of the long-term stability evaluation of deep coal pillars.https://www.frontiersin.org/articles/10.3389/feart.2023.1277147/fullcoaltriaxial creepconstitutive modelfractional-orderrheology |
| spellingShingle | Yongjie Yang Gang Huang Yangqiang Zhang Lei Yuan An improved Burgers creep model of coal based on fractional-order Frontiers in Earth Science coal triaxial creep constitutive model fractional-order rheology |
| title | An improved Burgers creep model of coal based on fractional-order |
| title_full | An improved Burgers creep model of coal based on fractional-order |
| title_fullStr | An improved Burgers creep model of coal based on fractional-order |
| title_full_unstemmed | An improved Burgers creep model of coal based on fractional-order |
| title_short | An improved Burgers creep model of coal based on fractional-order |
| title_sort | improved burgers creep model of coal based on fractional order |
| topic | coal triaxial creep constitutive model fractional-order rheology |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1277147/full |
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