Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures
With economic growth, constructing photovoltaic power plants on gangue mountains holds significant potential for the development of renewable energy and the effective utilization of gangue mountains. However, it is crucial to account for the impact of the spontaneous combustion of coal gangue on sur...
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| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/9/1416 |
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| author | Wenjin Zheng Yiyang Lin Zhanpeng Xu Zhigang Ye Chenglong Wang |
| author_facet | Wenjin Zheng Yiyang Lin Zhanpeng Xu Zhigang Ye Chenglong Wang |
| author_sort | Wenjin Zheng |
| collection | DOAJ |
| description | With economic growth, constructing photovoltaic power plants on gangue mountains holds significant potential for the development of renewable energy and the effective utilization of gangue mountains. However, it is crucial to account for the impact of the spontaneous combustion of coal gangue on surface structures and the mechanical performance of pile foundations. This study uses COMSOL Multiphysics software (version 6.2) to conduct a simulation by establishing a multiphysical coupling model of the temperature field, oxygen concentration field, and seepage velocity field, simulating the dynamic evolution of spontaneous combustion in gangue mountains. The reasonableness of the model was verified by comparison, and a mechanics module was added to explore the effects of pile foundations and ground surfaces at high temperatures. The results indicate that the spontaneous combustion of coal gangue initially generates high-temperature regions beneath the slope of the pile, which gradually expand outward. Due to thermal expansion, thermal stress and displacement occur in both the gangue mountain and pile foundations, potentially compromising the stability of the foundations and increasing the risk of structural failure. These findings can serve as valuable references for the construction of photovoltaic power plants and the effective utilization of gangue mountains. |
| format | Article |
| id | doaj-art-cc869a050184490a9141940a8e4e062c |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-cc869a050184490a9141940a8e4e062c2025-08-20T03:52:56ZengMDPI AGBuildings2075-53092025-04-01159141610.3390/buildings15091416Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface StructuresWenjin Zheng0Yiyang Lin1Zhanpeng Xu2Zhigang Ye3Chenglong Wang4Power China Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaPower China Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaPower China Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaWith economic growth, constructing photovoltaic power plants on gangue mountains holds significant potential for the development of renewable energy and the effective utilization of gangue mountains. However, it is crucial to account for the impact of the spontaneous combustion of coal gangue on surface structures and the mechanical performance of pile foundations. This study uses COMSOL Multiphysics software (version 6.2) to conduct a simulation by establishing a multiphysical coupling model of the temperature field, oxygen concentration field, and seepage velocity field, simulating the dynamic evolution of spontaneous combustion in gangue mountains. The reasonableness of the model was verified by comparison, and a mechanics module was added to explore the effects of pile foundations and ground surfaces at high temperatures. The results indicate that the spontaneous combustion of coal gangue initially generates high-temperature regions beneath the slope of the pile, which gradually expand outward. Due to thermal expansion, thermal stress and displacement occur in both the gangue mountain and pile foundations, potentially compromising the stability of the foundations and increasing the risk of structural failure. These findings can serve as valuable references for the construction of photovoltaic power plants and the effective utilization of gangue mountains.https://www.mdpi.com/2075-5309/15/9/1416coal ganguespontaneous combustionpile–soil interactionnumerical simulationpile foundation |
| spellingShingle | Wenjin Zheng Yiyang Lin Zhanpeng Xu Zhigang Ye Chenglong Wang Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures Buildings coal gangue spontaneous combustion pile–soil interaction numerical simulation pile foundation |
| title | Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures |
| title_full | Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures |
| title_fullStr | Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures |
| title_full_unstemmed | Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures |
| title_short | Study on the Impact of Spontaneous Combustion of Coal Gangue on Photovoltaic Pile Foundations and Surface Structures |
| title_sort | study on the impact of spontaneous combustion of coal gangue on photovoltaic pile foundations and surface structures |
| topic | coal gangue spontaneous combustion pile–soil interaction numerical simulation pile foundation |
| url | https://www.mdpi.com/2075-5309/15/9/1416 |
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