Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence
To address issues such as ground pressure manifestation, rock beam fracture, and overburden displacement caused by multi-level sublevel filling mining of gently inclined medium-thick ore bodies, this study adopts the Fankou Lead-Zinc Mine as the engineering background. Through a combination of numer...
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025025782 |
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| author | Fei Li Yihui Feng Haitao Ma Yongming Yin Xinai Lu Chaoyu Zan |
| author_facet | Fei Li Yihui Feng Haitao Ma Yongming Yin Xinai Lu Chaoyu Zan |
| author_sort | Fei Li |
| collection | DOAJ |
| description | To address issues such as ground pressure manifestation, rock beam fracture, and overburden displacement caused by multi-level sublevel filling mining of gently inclined medium-thick ore bodies, this study adopts the Fankou Lead-Zinc Mine as the engineering background. Through a combination of numerical simulation and theoretical analysis, it systematically reveals the movement behavior and the mechanism of surface subsidence of the overburden under the disturbance of multi-level sublevel filling mining. Mechanical models of the stress “pressure relief arch” and “bearing arch” are established, along with a mechanical model of the filling body and roof under combined disturbance effects. The results indicate that multi-level sublevel filling mining induces nonlinear superposition effects in the stress unloading-loading cycles. The disturbance of adjacent stopes induces an alternating development pattern of “pressure relief arch” and “bearing arch”. The activation of potential slip surfaces under combined disturbance is a key controlling factor contributing to asymmetric surface settlement. The disturbance zone can be divided into three types: a direct disturbance zone influencing the settlement magnitude of the overburden; a compound disturbance zone that alters the transmission pattern of mining-induced stress and the height of the stress arch; and a potential slip zone prone to shear and tensile failure. The stope layout pattern significantly influences the transmission pattern of mining-induced stress and the disturbance range. Under the intermittent mining mode, the overburden experiences uneven deformation within a height range of less than 150 m, whereas under the continuous filling-mining mode, uneven deformation extends to a height of up to 220 m. |
| format | Article |
| id | doaj-art-d423643dcfe84ff388aee290d3cb4f0a |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-d423643dcfe84ff388aee290d3cb4f0a2025-08-20T03:44:36ZengElsevierResults in Engineering2590-12302025-09-012710650910.1016/j.rineng.2025.106509Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidenceFei Li0Yihui Feng1Haitao Ma2Yongming Yin3Xinai Lu4Chaoyu Zan5School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, 100083, ChinaChina Academy of Safety Science and Technology, Beijing, 100054, ChinaChina Academy of Safety Science and Technology, Beijing, 100054, ChinaChina Academy of Safety Science and Technology, Beijing, 100054, ChinaChina Academy of Safety Science and Technology, Beijing, 100054, ChinaTo address issues such as ground pressure manifestation, rock beam fracture, and overburden displacement caused by multi-level sublevel filling mining of gently inclined medium-thick ore bodies, this study adopts the Fankou Lead-Zinc Mine as the engineering background. Through a combination of numerical simulation and theoretical analysis, it systematically reveals the movement behavior and the mechanism of surface subsidence of the overburden under the disturbance of multi-level sublevel filling mining. Mechanical models of the stress “pressure relief arch” and “bearing arch” are established, along with a mechanical model of the filling body and roof under combined disturbance effects. The results indicate that multi-level sublevel filling mining induces nonlinear superposition effects in the stress unloading-loading cycles. The disturbance of adjacent stopes induces an alternating development pattern of “pressure relief arch” and “bearing arch”. The activation of potential slip surfaces under combined disturbance is a key controlling factor contributing to asymmetric surface settlement. The disturbance zone can be divided into three types: a direct disturbance zone influencing the settlement magnitude of the overburden; a compound disturbance zone that alters the transmission pattern of mining-induced stress and the height of the stress arch; and a potential slip zone prone to shear and tensile failure. The stope layout pattern significantly influences the transmission pattern of mining-induced stress and the disturbance range. Under the intermittent mining mode, the overburden experiences uneven deformation within a height range of less than 150 m, whereas under the continuous filling-mining mode, uneven deformation extends to a height of up to 220 m.http://www.sciencedirect.com/science/article/pii/S2590123025025782Mining rock mechanicsFilling mining methodStrata controlStress archMulti-level backfill mining |
| spellingShingle | Fei Li Yihui Feng Haitao Ma Yongming Yin Xinai Lu Chaoyu Zan Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence Results in Engineering Mining rock mechanics Filling mining method Strata control Stress arch Multi-level backfill mining |
| title | Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence |
| title_full | Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence |
| title_fullStr | Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence |
| title_full_unstemmed | Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence |
| title_short | Movement behavior of rock strata in multi-level sublevel filling mining and forecasting of differential surface subsidence |
| title_sort | movement behavior of rock strata in multi level sublevel filling mining and forecasting of differential surface subsidence |
| topic | Mining rock mechanics Filling mining method Strata control Stress arch Multi-level backfill mining |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025025782 |
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