Abstract:Purpose: This paper aims to explore a new method for efficient mining of iron ore resources, focusing on the effect of the double sublevels parallel mining method in improving mining efficiency and resource recovery rate, and analyze the safety and stability in the mining process through specific cases. Method: Taking an iron ore mine in Anhui province as the research object, the paper innovatively put forward the double sublevels parallel mining method. By using Flac3D numerical simulation software, a typical stope numerical model with a size of 50×15×120m (length, width and height) is constructed to simulate the mining process of double sublevels parallel mining. Result: The stress concentration at the bottom of the goaf and host rock on both sides of the stope increased significantly after the excavation of the double-sublevel stope. The goaf roof has significant displacement, with the maximum displacement reaching 1.2 m. The maximum displacement of the side is 0.8 m. Further analysis shows that the potential failure mode of host rock is mainly shear plastic failure. Conclusion: The double sublevel parallel mining method has significant advantages in improving the efficiency and resource recovery of iron ore mining. Although the change of host rock stress and displacement will be caused in the mining process, stress concentration and displacement deformation, reasonable engineering design and supporting measures can ensure the safety and stability of the stope. Significance: The double sublevel mining technology provides a feasible reference scheme for the mining of similar mines, and opens up new ideas and methods for the innovation and development of iron mining technology.