Analysis and research on cover thickness of non-pillar sublevel caving method in an iron mine in Panxi

Zhang Liangbing; Leng Jianyong; Li Cui; Chen Tao; Luo Shaochen

doi:10.7513/j.issn.1004-7638.2023.05.008

Volume 44 Issue 5

Oct. 2023

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Zhang Liangbing, Leng Jianyong, Li Cui, Chen Tao, Luo Shaochen. Analysis and research on cover thickness of non-pillar sublevel caving method in an iron mine in Panxi[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 48-52. doi: 10.7513/j.issn.1004-7638.2023.05.008

Citation:

Zhang Liangbing, Leng Jianyong, Li Cui, Chen Tao, Luo Shaochen. Analysis and research on cover thickness of non-pillar sublevel caving method in an iron mine in Panxi[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 48-52. doi: 10.7513/j.issn.1004-7638.2023.05.008

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Analysis and research on cover thickness of non-pillar sublevel caving method in an iron mine in Panxi

doi: 10.7513/j.issn.1004-7638.2023.05.008

Design and Research Institute of Mining Co. , Ltd. , Pangang Group, Panzhihua 617063, Sichuan, China

Received Date: 2023-07-20
Available Online: 2023-11-04
Publish Date: 2023-10-31

Abstract

Abstract

Aiming at solving the problem of determining the reasonable thickness of the overburden layer in the conversion of open-pit to underground caving mining of the hanging wall ore body in an iron mine in Panxi, the Similarity Model test and Numerical Simulation were used to analyze and study the movement speed and trajectory of the overburden particles with different thicknesses during the ore drawing process and the settlement change of the whole overburden layer. The results show that the numerical simulation results are highly matched with the indoor similar material test. When the overburden layer is 35 m and 40 m, the surface fluctuation angle is small and the structure is complete, which can meet the needs of mine safety production. Combined with the safety regulations, it is safer and more reasonable to take 40 m as the thickness of the covering layer.
- ore,
- open-air to underground,
- hanging wall ore body,
- covering layer,
- Numerical Simulation,
- Similar Material test

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References(8)

References

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