Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site
Abstract The ore mining sites commonly experience slope instability, which is causing concern for the workers’ safety and the operation’s stability. Considering the Ziluoyi iron ore mining site as a case study, uniaxial compression strength and shear tests are performed on the lower disk peripheral...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-85770-0 |
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| author | Zhongao Yang Ziling Song Xiaohua Ding Mvondo Nga Michele Victoire Ali Moussa Abdoul Wahab Barry Oumar Fanghui Yang Abdullahi Yusuf Ibrahim Zhen Gao Zhaoxi Long |
| author_facet | Zhongao Yang Ziling Song Xiaohua Ding Mvondo Nga Michele Victoire Ali Moussa Abdoul Wahab Barry Oumar Fanghui Yang Abdullahi Yusuf Ibrahim Zhen Gao Zhaoxi Long |
| author_sort | Zhongao Yang |
| collection | DOAJ |
| description | Abstract The ore mining sites commonly experience slope instability, which is causing concern for the workers’ safety and the operation’s stability. Considering the Ziluoyi iron ore mining site as a case study, uniaxial compression strength and shear tests are performed on the lower disk peripheral rock, ore body, and upper disk peripheral rock, leading to the extraction of compressive strength and elastic modulus (lower disk: 77.7 MPa–9.093 GPa; ore body: 19.6 MPa–4.619 GPa; upper disk: 55.47 MPa–5.573 GPa). Further, using the Hoek–Brown criterion in conjunction with the Moher–Columb criterion, the cohesion and internal friction angle of various samples are appropriately determined (lower disk: 21.124 MPa–35.614°; ore body: 21.66 MPa–26.5°; upper disk: 42.916 MPa–25.743°). By employing an appropriate rock mass reduction model, its constants (m and s) and RMR score for the consisting layers (schist layer and ore body) of the three understudy slopes (Slope#1–Slope#3) are evaluated. An effective algorithm based on the Morgenstern–Price method is employed and its effectiveness is also proved by comparing its factor of safety results with those of Geo-Slope for various slope structures subjected to different loads. Subsequently, the stability analyses of various slopes are methodically examined by predicting the factor of safety values under multiple types of loading (i.e., self-weight + groundwater, slope self-weight + groundwater + blasting vibration force, and self-weight + groundwater + seismic force). The factor of safety values of the slopes pertinent to Slope#1/Slope#2/Slope#3 subjected to the above loading conditions are obtained as 1.354/1.273/1.188, 1.326/1.239/1.169, and 1.321/1.232/1.162, respectively. Upon comparing these results with those of a valid homeland specification, it becomes clear that the results are able to meet safety standards and ensure efficient mine operation. |
| format | Article |
| id | doaj-art-26ccfb9fe3024a3088e48860cbe8fbca |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-26ccfb9fe3024a3088e48860cbe8fbca2025-01-19T12:22:03ZengNature PortfolioScientific Reports2045-23222025-01-0115111810.1038/s41598-025-85770-0Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining siteZhongao Yang0Ziling Song1Xiaohua Ding2Mvondo Nga Michele Victoire3Ali Moussa Abdoul Wahab4Barry Oumar5Fanghui Yang6Abdullahi Yusuf Ibrahim7Zhen Gao8Zhaoxi Long9College of Environmental Science and Engineering, Liaoning Technical UniversityCollege of Environmental Science and Engineering, Liaoning Technical UniversitySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologyCollege of Environmental Science and Engineering, Liaoning Technical UniversitySchool of Safety Engineering, China University of Mining and TechnologyAbstract The ore mining sites commonly experience slope instability, which is causing concern for the workers’ safety and the operation’s stability. Considering the Ziluoyi iron ore mining site as a case study, uniaxial compression strength and shear tests are performed on the lower disk peripheral rock, ore body, and upper disk peripheral rock, leading to the extraction of compressive strength and elastic modulus (lower disk: 77.7 MPa–9.093 GPa; ore body: 19.6 MPa–4.619 GPa; upper disk: 55.47 MPa–5.573 GPa). Further, using the Hoek–Brown criterion in conjunction with the Moher–Columb criterion, the cohesion and internal friction angle of various samples are appropriately determined (lower disk: 21.124 MPa–35.614°; ore body: 21.66 MPa–26.5°; upper disk: 42.916 MPa–25.743°). By employing an appropriate rock mass reduction model, its constants (m and s) and RMR score for the consisting layers (schist layer and ore body) of the three understudy slopes (Slope#1–Slope#3) are evaluated. An effective algorithm based on the Morgenstern–Price method is employed and its effectiveness is also proved by comparing its factor of safety results with those of Geo-Slope for various slope structures subjected to different loads. Subsequently, the stability analyses of various slopes are methodically examined by predicting the factor of safety values under multiple types of loading (i.e., self-weight + groundwater, slope self-weight + groundwater + blasting vibration force, and self-weight + groundwater + seismic force). The factor of safety values of the slopes pertinent to Slope#1/Slope#2/Slope#3 subjected to the above loading conditions are obtained as 1.354/1.273/1.188, 1.326/1.239/1.169, and 1.321/1.232/1.162, respectively. Upon comparing these results with those of a valid homeland specification, it becomes clear that the results are able to meet safety standards and ensure efficient mine operation.https://doi.org/10.1038/s41598-025-85770-0Slope instabilityExperimental and theoretical investigationsZiluoyi iron oreMorgenstern–Price-based algorithm approachVarious loading scenarios |
| spellingShingle | Zhongao Yang Ziling Song Xiaohua Ding Mvondo Nga Michele Victoire Ali Moussa Abdoul Wahab Barry Oumar Fanghui Yang Abdullahi Yusuf Ibrahim Zhen Gao Zhaoxi Long Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site Scientific Reports Slope instability Experimental and theoretical investigations Ziluoyi iron ore Morgenstern–Price-based algorithm approach Various loading scenarios |
| title | Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site |
| title_full | Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site |
| title_fullStr | Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site |
| title_full_unstemmed | Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site |
| title_short | Investigating slope stability of multiple stopes prone to instability in the Ziluoyi iron ore mining site |
| title_sort | investigating slope stability of multiple stopes prone to instability in the ziluoyi iron ore mining site |
| topic | Slope instability Experimental and theoretical investigations Ziluoyi iron ore Morgenstern–Price-based algorithm approach Various loading scenarios |
| url | https://doi.org/10.1038/s41598-025-85770-0 |
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