Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine
In order to analyze the deformation of the old goaf in Dameidong Coal Mine and its influence on the surrounding rock and soil layer, it provides guidance for the prevention and control of geological disasters in the region. In this paper, the transient electromagnetic method and numerical simulation...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-02-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1111745/full |
| _version_ | 1811169521235394560 |
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| author | Zhan-Xi Wei Zhan-Xi Wei Zhan-Xi Wei Meng Zhao Fei-Hong Xie Sheng-Hong Cao Sheng-Hong Cao Sheng-Hong Cao Jian-Hui Dong Yang-Dan Dong |
| author_facet | Zhan-Xi Wei Zhan-Xi Wei Zhan-Xi Wei Meng Zhao Fei-Hong Xie Sheng-Hong Cao Sheng-Hong Cao Sheng-Hong Cao Jian-Hui Dong Yang-Dan Dong |
| author_sort | Zhan-Xi Wei |
| collection | DOAJ |
| description | In order to analyze the deformation of the old goaf in Dameidong Coal Mine and its influence on the surrounding rock and soil layer, it provides guidance for the prevention and control of geological disasters in the region. In this paper, the transient electromagnetic method and numerical simulation method were used to study the deformation law of the overlying strata in the mining area. The results of transient electromagnetic detection showed that the subsidence area of the goaf in Dameidong Coal Mine was within the range of the elliptical water-rich area, and the average buried depth of the goaf was expected to be 90 m. The model was established by discrete element numerical simulation to study the variation law of mining overburden rock. The results showed that the stress change in coal mining was mainly reflected at both ends of the goaf, which was a stress concentration phenomenon. Overburden rock deformation changed with the mining process. The stress concentration area and the displacement change area were highly coincident, consisted with the displacement monitoring map, showing a “U”-type distribution. The results proved that the numerical simulation results do have theoretical guidance for mining subsidence control. |
| first_indexed | 2024-04-10T16:43:50Z |
| format | Article |
| id | doaj.art-edf8f01a0b83486a80a60ab9b2bda2e1 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T16:43:50Z |
| publishDate | 2023-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-edf8f01a0b83486a80a60ab9b2bda2e12023-02-08T04:35:02ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-02-011110.3389/feart.2023.11117451111745Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mineZhan-Xi Wei0Zhan-Xi Wei1Zhan-Xi Wei2Meng Zhao3Fei-Hong Xie4Sheng-Hong Cao5Sheng-Hong Cao6Sheng-Hong Cao7Jian-Hui Dong8Yang-Dan Dong9Qinghai Bureau of Environmental Geological Exploration, Xining, ChinaQinghai 906 Project Survey and Design Institute, Xining, ChinaQinghai Geological Environmental Protection and Disaster Prevention Engineering Technology Research Center, Xining, ChinaSichuan Engineering Research Center for Mechanical Properties and Engineering Technology of Unsaturated Soils, Chengdu University, Chengdu, ChinaSichuan Engineering Research Center for Mechanical Properties and Engineering Technology of Unsaturated Soils, Chengdu University, Chengdu, ChinaQinghai Bureau of Environmental Geological Exploration, Xining, ChinaQinghai 906 Project Survey and Design Institute, Xining, ChinaQinghai Geological Environmental Protection and Disaster Prevention Engineering Technology Research Center, Xining, ChinaSichuan Engineering Research Center for Mechanical Properties and Engineering Technology of Unsaturated Soils, Chengdu University, Chengdu, ChinaState Key Laboratory of Geological Disaster Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu, ChinaIn order to analyze the deformation of the old goaf in Dameidong Coal Mine and its influence on the surrounding rock and soil layer, it provides guidance for the prevention and control of geological disasters in the region. In this paper, the transient electromagnetic method and numerical simulation method were used to study the deformation law of the overlying strata in the mining area. The results of transient electromagnetic detection showed that the subsidence area of the goaf in Dameidong Coal Mine was within the range of the elliptical water-rich area, and the average buried depth of the goaf was expected to be 90 m. The model was established by discrete element numerical simulation to study the variation law of mining overburden rock. The results showed that the stress change in coal mining was mainly reflected at both ends of the goaf, which was a stress concentration phenomenon. Overburden rock deformation changed with the mining process. The stress concentration area and the displacement change area were highly coincident, consisted with the displacement monitoring map, showing a “U”-type distribution. The results proved that the numerical simulation results do have theoretical guidance for mining subsidence control.https://www.frontiersin.org/articles/10.3389/feart.2023.1111745/fullgeological disaster preventioncoal seam miningformer goaf detectiondiscrete element numerical simulationstrata deformation |
| spellingShingle | Zhan-Xi Wei Zhan-Xi Wei Zhan-Xi Wei Meng Zhao Fei-Hong Xie Sheng-Hong Cao Sheng-Hong Cao Sheng-Hong Cao Jian-Hui Dong Yang-Dan Dong Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine Frontiers in Earth Science geological disaster prevention coal seam mining former goaf detection discrete element numerical simulation strata deformation |
| title | Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine |
| title_full | Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine |
| title_fullStr | Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine |
| title_full_unstemmed | Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine |
| title_short | Detection of former goaf and analysis of deformation characteristics of overburden in Dameidong coal mine |
| title_sort | detection of former goaf and analysis of deformation characteristics of overburden in dameidong coal mine |
| topic | geological disaster prevention coal seam mining former goaf detection discrete element numerical simulation strata deformation |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1111745/full |
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