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Numerical Simulation for Stability of Complex Mined-out Areas in Multi-level Mining
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Xiongtian ZHANG1, Bingde MA1, Chunyang ZHANG2, 3, 4, Kaibing HU2, Xiaolong TIAN2
Mining and Metallurgical Engineering | 2025, 45(2) : 26 - 33
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Mining and Metallurgical Engineering | 2025, 45(2): 26-33
• MINING •
Numerical Simulation for Stability of Complex Mined-out Areas in Multi-level Mining
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Xiongtian ZHANG1, Bingde MA1, Chunyang ZHANG2, 3, 4, Kaibing HU2, Xiaolong TIAN2
Affiliations
  • 1.Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Lanzhou 730000, Gansu, China
  • 2.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
  • 3.State Key Laboratory of Safety and Health for Metal Mines, Ma'anshan 243000, Anhui, China
  • 4.Sinosteel Ma'anshan General Institute of Mining Research Co., Ltd., Ma'anshan 243000, Anhui, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.005
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In order to assess stability of the current multi-level mined-out areas in Qijiaojing iron mine in Subei County Bolun Mining Development Co., Ltd.of Western Mining Limited Company, the mine excavation process was simulated with FLAC3D software to mainly analyze the stress and displacement changes in the mined-out areas after multi-level excavation. The results indicate that the stress in the mined-out areas is predominantly compressive stress, which is primarily concentrated in the roof and pillars of the stope. The maximum compressive stress, approximately 20 MPa, is observed in the pillars of the mined-out area at the 2 150 m level. It is found that the mind-out area has the maximum settlement of 20.30 mm and the maximum horizontal displacement of 7.22 mm, being satisfactorily stable. However, long-term exposure of large-scale mined-out areas may lead to deformation and collapse of pillars. Therefore, regular inspections and reinforcement measures should be taken for the pillars during subsequent production processes.

Qijiaojing Iron Mine  /  deep mining  /  multi-level  /  mined-out area  /  stability  /  stress  /  displacement  /  treatment of mined-out area
Xiongtian ZHANG, Bingde MA, Chunyang ZHANG, Kaibing HU, Xiaolong TIAN. Numerical Simulation for Stability of Complex Mined-out Areas in Multi-level Mining[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 26 -33 . DOI: 10.3969/j.issn.0253-6099.2025.02.005
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Year 2025 volume 45 Issue 2
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doi: 10.3969/j.issn.0253-6099.2025.02.005
  • Receive Date：2024-11-03
  • Online Date：2026-03-19
  • Published：2025-04-01
Article Data
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History
  • Received：2024-11-03
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Affiliations
    1.Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Lanzhou 730000, Gansu, China
    2.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
    3.State Key Laboratory of Safety and Health for Metal Mines, Ma'anshan 243000, Anhui, China
    4.Sinosteel Ma'anshan General Institute of Mining Research Co., Ltd., Ma'anshan 243000, Anhui, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.02.005
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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