Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence
Abstract To obtain the seepage evolution rule and water inrush mechanism of the collapse column, a multi-field coupled mechanical model for water inrush disasters caused by the collapse column is established in this paper, on the basis of the specific engineering conditions of the 1908 working face...
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| Format: | Article |
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-54180-z |
| _version_ | 1827315951196962816 |
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| author | Wu Yongjiang Cao Zhengzheng Li Zhenhua Du Feng Wang Wenqiang Zhai Minglei Hong Zijie Xue Yi |
| author_facet | Wu Yongjiang Cao Zhengzheng Li Zhenhua Du Feng Wang Wenqiang Zhai Minglei Hong Zijie Xue Yi |
| author_sort | Wu Yongjiang |
| collection | DOAJ |
| description | Abstract To obtain the seepage evolution rule and water inrush mechanism of the collapse column, a multi-field coupled mechanical model for water inrush disasters caused by the collapse column is established in this paper, on the basis of the specific engineering conditions of the 1908 working face in the Qianjin coal mine. The mechanical model is composed of internal column elements within the collapse column and surrounding rock masses. The research focuses on the seepage evolution rule in the roof collapse column under different mining conditions and investigates the permeation instability mechanism of collapse column based on the transition of flow state. The research results indicate that the seepage pathway evolves continuously, ultimately forming a channel for water inrush, as the working face advances towards the collapse column. Besides, the water inflow increases rapidly when the working face advances 100 m, then gradually stabilizes, indicating that the seepage channel entry of the collapse column is in a stable stage. Meanwhile, mass loss in the collapse column gradually moves upward. the collapse column remains stable as a whole in the initial stage of water flow, with a small permeability, exhibiting linear flow. As time steps increases, particle loss in collapse column gradually extends to the upper part, forming a stable seepage channel. The flow velocity shows fluctuations with a slow declining trend over time. |
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| format | Article |
| id | doaj.art-10de06b8e94e413a96a0560741256894 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T23:06:40Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-10de06b8e94e413a96a05607412568942024-03-17T12:26:17ZengNature PortfolioScientific Reports2045-23222024-03-0114111310.1038/s41598-024-54180-zSeepage evolution characteristics and water inrush mechanism in collapse column under mining influenceWu Yongjiang0Cao Zhengzheng1Li Zhenhua2Du Feng3Wang Wenqiang4Zhai Minglei5Hong Zijie6Xue Yi7International Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention, School of Civil Engineering, Henan Polytechnic UniversityInternational Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention, School of Civil Engineering, Henan Polytechnic UniversityHenan Mine Water Disaster Prevention and Control and Water Resources Utilization Engineering Technology Research Center, Henan Polytechnic UniversityHenan Mine Water Disaster Prevention and Control and Water Resources Utilization Engineering Technology Research Center, Henan Polytechnic UniversityHenan Mine Water Disaster Prevention and Control and Water Resources Utilization Engineering Technology Research Center, Henan Polytechnic UniversityHenan Mine Water Disaster Prevention and Control and Water Resources Utilization Engineering Technology Research Center, Henan Polytechnic UniversityInternational Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention, School of Civil Engineering, Henan Polytechnic UniversitySchool of Civil Engineering and Architecture, Xi’an University of TechnologyAbstract To obtain the seepage evolution rule and water inrush mechanism of the collapse column, a multi-field coupled mechanical model for water inrush disasters caused by the collapse column is established in this paper, on the basis of the specific engineering conditions of the 1908 working face in the Qianjin coal mine. The mechanical model is composed of internal column elements within the collapse column and surrounding rock masses. The research focuses on the seepage evolution rule in the roof collapse column under different mining conditions and investigates the permeation instability mechanism of collapse column based on the transition of flow state. The research results indicate that the seepage pathway evolves continuously, ultimately forming a channel for water inrush, as the working face advances towards the collapse column. Besides, the water inflow increases rapidly when the working face advances 100 m, then gradually stabilizes, indicating that the seepage channel entry of the collapse column is in a stable stage. Meanwhile, mass loss in the collapse column gradually moves upward. the collapse column remains stable as a whole in the initial stage of water flow, with a small permeability, exhibiting linear flow. As time steps increases, particle loss in collapse column gradually extends to the upper part, forming a stable seepage channel. The flow velocity shows fluctuations with a slow declining trend over time.https://doi.org/10.1038/s41598-024-54180-zCollapse columnSeepage evolutionWater inrush disasterCoupled mechanical modelingQianjin coal mine |
| spellingShingle | Wu Yongjiang Cao Zhengzheng Li Zhenhua Du Feng Wang Wenqiang Zhai Minglei Hong Zijie Xue Yi Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence Scientific Reports Collapse column Seepage evolution Water inrush disaster Coupled mechanical modeling Qianjin coal mine |
| title | Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence |
| title_full | Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence |
| title_fullStr | Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence |
| title_full_unstemmed | Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence |
| title_short | Seepage evolution characteristics and water inrush mechanism in collapse column under mining influence |
| title_sort | seepage evolution characteristics and water inrush mechanism in collapse column under mining influence |
| topic | Collapse column Seepage evolution Water inrush disaster Coupled mechanical modeling Qianjin coal mine |
| url | https://doi.org/10.1038/s41598-024-54180-z |
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