Instability of Gypsum Mining Goaf Under the Influence of Typical Faults
Mine collapse is a common geological hazard associated with mining areas. In this paper, the goaf of a gypsum mine under the influence of typical faults is chosen as an example, and the stress on the center of the goaf roof is examined through theoretical analysis. The safety factors of the pillar a...
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doaj-a4108d6964234e32b003f8271f43169d2021-03-29T23:33:17ZengIEEEIEEE Access2169-35362019-01-017886358864210.1109/ACCESS.2019.29258108751975Instability of Gypsum Mining Goaf Under the Influence of Typical FaultsCongrui Zhang0https://orcid.org/0000-0001-9770-5899Xuchun Yang1Gaofeng Ren2Bo Ke3https://orcid.org/0000-0002-9707-3825Zhanglun Song4School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, ChinaTongling Nonferrous Nanling Yaojialing Mining Company, Ltd., Wuhu, ChinaMine collapse is a common geological hazard associated with mining areas. In this paper, the goaf of a gypsum mine under the influence of typical faults is chosen as an example, and the stress on the center of the goaf roof is examined through theoretical analysis. The safety factors of the pillar at -127 m, -140 m, and -160 m are evaluated to be 1.471, 1.469, and 1.467, respectively, based on the Wilson theory. It is concluded that the structural parameters of the mining stope are reasonable without considering the influence of the fault. Furthermore, the numerical simulation by FLAC<sup>3D</sup> is used to verify the analytical results and to study the influence of typical faults on the stress and displacement of the goaf. The results showed that the load of the roof and the pillars at a distance from the fault was larger than the load near the fault. First, the roof at this location is pulled. Next, cracks appear and develop. Then, the middle of the stope roof is pulled and falls, and the overburden strata move. Finally, the unstable strata are transmitted to the surface, and the ground surface of the mining area subsides.https://ieeexplore.ieee.org/document/8751975/Gypsum minetypical faultinstability of goaffinite difference method |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Congrui Zhang Xuchun Yang Gaofeng Ren Bo Ke Zhanglun Song |
spellingShingle |
Congrui Zhang Xuchun Yang Gaofeng Ren Bo Ke Zhanglun Song Instability of Gypsum Mining Goaf Under the Influence of Typical Faults IEEE Access Gypsum mine typical fault instability of goaf finite difference method |
author_facet |
Congrui Zhang Xuchun Yang Gaofeng Ren Bo Ke Zhanglun Song |
author_sort |
Congrui Zhang |
title |
Instability of Gypsum Mining Goaf Under the Influence of Typical Faults |
title_short |
Instability of Gypsum Mining Goaf Under the Influence of Typical Faults |
title_full |
Instability of Gypsum Mining Goaf Under the Influence of Typical Faults |
title_fullStr |
Instability of Gypsum Mining Goaf Under the Influence of Typical Faults |
title_full_unstemmed |
Instability of Gypsum Mining Goaf Under the Influence of Typical Faults |
title_sort |
instability of gypsum mining goaf under the influence of typical faults |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2019-01-01 |
description |
Mine collapse is a common geological hazard associated with mining areas. In this paper, the goaf of a gypsum mine under the influence of typical faults is chosen as an example, and the stress on the center of the goaf roof is examined through theoretical analysis. The safety factors of the pillar at -127 m, -140 m, and -160 m are evaluated to be 1.471, 1.469, and 1.467, respectively, based on the Wilson theory. It is concluded that the structural parameters of the mining stope are reasonable without considering the influence of the fault. Furthermore, the numerical simulation by FLAC<sup>3D</sup> is used to verify the analytical results and to study the influence of typical faults on the stress and displacement of the goaf. The results showed that the load of the roof and the pillars at a distance from the fault was larger than the load near the fault. First, the roof at this location is pulled. Next, cracks appear and develop. Then, the middle of the stope roof is pulled and falls, and the overburden strata move. Finally, the unstable strata are transmitted to the surface, and the ground surface of the mining area subsides. |
topic |
Gypsum mine typical fault instability of goaf finite difference method |
url |
https://ieeexplore.ieee.org/document/8751975/ |
work_keys_str_mv |
AT congruizhang instabilityofgypsummininggoafundertheinfluenceoftypicalfaults AT xuchunyang instabilityofgypsummininggoafundertheinfluenceoftypicalfaults AT gaofengren instabilityofgypsummininggoafundertheinfluenceoftypicalfaults AT boke instabilityofgypsummininggoafundertheinfluenceoftypicalfaults AT zhanglunsong instabilityofgypsummininggoafundertheinfluenceoftypicalfaults |
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1724189337843662848 |