Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method
Understanding the spatiotemporal evolution of overburden deformation during coal mining is still a challenge in engineering practice due to the limitation of monitoring techniques. Taking the Yangliu Coal Mine as an example, a similarity model test was designed and conducted to investigate the defor...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Journal of Rock Mechanics and Geotechnical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674775522001706 |
| _version_ | 1811264427652022272 |
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| author | Gang Cheng Wentao Xu Bin Shi Jinghong Wu Binyang Sun Honghu Zhu |
| author_facet | Gang Cheng Wentao Xu Bin Shi Jinghong Wu Binyang Sun Honghu Zhu |
| author_sort | Gang Cheng |
| collection | DOAJ |
| description | Understanding the spatiotemporal evolution of overburden deformation during coal mining is still a challenge in engineering practice due to the limitation of monitoring techniques. Taking the Yangliu Coal Mine as an example, a similarity model test was designed and conducted to investigate the deformation and failure mechanism of overlying rocks in this study. Distributed fiber optic sensing (DFOS), high-density electrical resistivity tomography (HD-ERT) and close-range photogrammetry (CRP) technologies were used in the test for comprehensive analyses. The combined use of the three methods facilitates the investigation of the spatiotemporal evolution characteristics of overburden deformation, showing that the mining-induced deformation of overburden strata was a dynamic evolution process. This process was accompanied by the formation, propagation, closure and redevelopment of separation cracks. Moreover, the key rock stratum with high strength and high-quality lithology played a crucial role in the whole process of overburden deformation. There were generally three failure modes of overburden rock layers, including bending and tension, overall shearing, and shearing and sliding. Shear failure often leads to overburden falling off in blocks, which poses a serious threat to mining safety. Therefore, real-time and accurate monitoring of overburden deformation is of great significance for the safe mining of underground coal seams. |
| first_indexed | 2024-04-12T20:02:58Z |
| format | Article |
| id | doaj.art-00a63479653e4970a6268736480bff2e |
| institution | Directory Open Access Journal |
| issn | 1674-7755 |
| language | English |
| last_indexed | 2024-04-12T20:02:58Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Rock Mechanics and Geotechnical Engineering |
| spelling | doaj.art-00a63479653e4970a6268736480bff2e2022-12-22T03:18:28ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552022-10-0114516261641Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing methodGang Cheng0Wentao Xu1Bin Shi2Jinghong Wu3Binyang Sun4Honghu Zhu5School of Computer Science, North China Institute of Science and Technology, Beijing, 101601, China; School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; Corresponding author.School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, ChinaSchool of Civil Engineering, Suzhou University of Science and Technology, Suzhou, 215009, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan, 232001, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; Corresponding author.Understanding the spatiotemporal evolution of overburden deformation during coal mining is still a challenge in engineering practice due to the limitation of monitoring techniques. Taking the Yangliu Coal Mine as an example, a similarity model test was designed and conducted to investigate the deformation and failure mechanism of overlying rocks in this study. Distributed fiber optic sensing (DFOS), high-density electrical resistivity tomography (HD-ERT) and close-range photogrammetry (CRP) technologies were used in the test for comprehensive analyses. The combined use of the three methods facilitates the investigation of the spatiotemporal evolution characteristics of overburden deformation, showing that the mining-induced deformation of overburden strata was a dynamic evolution process. This process was accompanied by the formation, propagation, closure and redevelopment of separation cracks. Moreover, the key rock stratum with high strength and high-quality lithology played a crucial role in the whole process of overburden deformation. There were generally three failure modes of overburden rock layers, including bending and tension, overall shearing, and shearing and sliding. Shear failure often leads to overburden falling off in blocks, which poses a serious threat to mining safety. Therefore, real-time and accurate monitoring of overburden deformation is of great significance for the safe mining of underground coal seams.http://www.sciencedirect.com/science/article/pii/S1674775522001706Similarity modelDistributed fiber optic sensing (DFOS)Overburden deformationFailure mechanismCoal seam mining |
| spellingShingle | Gang Cheng Wentao Xu Bin Shi Jinghong Wu Binyang Sun Honghu Zhu Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method Journal of Rock Mechanics and Geotechnical Engineering Similarity model Distributed fiber optic sensing (DFOS) Overburden deformation Failure mechanism Coal seam mining |
| title | Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method |
| title_full | Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method |
| title_fullStr | Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method |
| title_full_unstemmed | Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method |
| title_short | Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method |
| title_sort | experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method |
| topic | Similarity model Distributed fiber optic sensing (DFOS) Overburden deformation Failure mechanism Coal seam mining |
| url | http://www.sciencedirect.com/science/article/pii/S1674775522001706 |
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