A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stability analysis of large-scale stope using stage subsequent filling mining method in Sijiaying iron mine
To improve mining production capacity, a stage subsequent filling mining (SSFM) method is employed for Sijiaying iron mine. The height of the stage stope is approximately 100 m. As there are farmlands and villages on the surface of the mine, the surface deformation should be controlled when the ore is mined out for the purpose of stope stability and minimizing surface subsidence. In this paper, according to the site-specific geological conditions, the self-stability of the stage-filling body was analyzed, and the failure mechanism of backfilling body was defined. Thus the relationship between the exposed height of filling body and the required strength was obtained. Next, the stability of backfilling body and the characteristics of surface subsidence due to mining of −450 m level were analyzed using physical modeling. Finally, a three-dimensional numerical model was established using FLAC3D, with which the surface subsidence and the stability of stope were achieved. The results show that the stope basically remains stable during the two-step recovery process. The maximum magnitude of the incline is 10.99 mm/m, a little larger than the permissible value of 10 mm/m, and the horizontal deformation is 5.9 mm/m, approaching the critical value of 6.0 mm/m, suggesting that the mine design is feasible for safety mining.
Stability analysis of large-scale stope using stage subsequent filling mining method in Sijiaying iron mine
To improve mining production capacity, a stage subsequent filling mining (SSFM) method is employed for Sijiaying iron mine. The height of the stage stope is approximately 100 m. As there are farmlands and villages on the surface of the mine, the surface deformation should be controlled when the ore is mined out for the purpose of stope stability and minimizing surface subsidence. In this paper, according to the site-specific geological conditions, the self-stability of the stage-filling body was analyzed, and the failure mechanism of backfilling body was defined. Thus the relationship between the exposed height of filling body and the required strength was obtained. Next, the stability of backfilling body and the characteristics of surface subsidence due to mining of −450 m level were analyzed using physical modeling. Finally, a three-dimensional numerical model was established using FLAC3D, with which the surface subsidence and the stability of stope were achieved. The results show that the stope basically remains stable during the two-step recovery process. The maximum magnitude of the incline is 10.99 mm/m, a little larger than the permissible value of 10 mm/m, and the horizontal deformation is 5.9 mm/m, approaching the critical value of 6.0 mm/m, suggesting that the mine design is feasible for safety mining.
Stability analysis of large-scale stope using stage subsequent filling mining method in Sijiaying iron mine
Zhiqiang Yang (author) / Shuhua Zhai (author) / Qian Gao (author) / Maohui Li (author)
2015
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under ​CC BY-SA 1.0
Ore body open stope subsequent filling pillar recovery method
| European Patent Office | 2024
Experimental stope mining of Magu Mountain Cu-Mo Mine
| British Library Online Contents | 2003
| British Library Conference Proceedings | 2011
Prediction of stope stability at the Las Encinas Mine
| British Library Conference Proceedings | 1999
Analysis of Stope Stability in a Mining and dumping Site
| Wiley | 2025