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Optimization of Barrier Pillar Thickness in Stope Mining Based on Zone Safety
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Chengzhe SU1, Shuaijie JI2, 3, Dianming ZHANG4
Mining and Metallurgical Engineering | 2024, 44(4) : 155 - 158
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Mining and Metallurgical Engineering | 2024, 44(4): 155-158
• MINING •
Optimization of Barrier Pillar Thickness in Stope Mining Based on Zone Safety
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Chengzhe SU1, Shuaijie JI2, 3, Dianming ZHANG4
Affiliations
  • 1.Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Lanzhou 730000, Gansu, China
  • 2.School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
  • 3.State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, Anhui, China
  • 4.Xinjiang Xituo Mining Co., Ltd., Hami 839000, Xinjiang, China
Published: 2024-08-01 doi: 10.3969/j.issn.0253-6099.2024.04.029
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In order to explore influence of the thickness of barrier pillars reserved in stopes on mining operation during the transition from mining with caving to mining with backfilling in a copper-zinc mine in northwest China, six thickness schemes were selected for the barrier pillars in the stope based on the mining status and the engineering geological conditions. Then, a three-dimensional numerical model was constructed with 3Dmine-Rhinoceros, and factor of safety and zone safety were adopted in the analysis. As for the mind-out area without backfilling in the middle section of upper part, three continuous stope interval mining on the level of 210 m was calculated based on simulation with FLAC3D, and the changes in roof settlement deformation, factor of safety and zone safety were also analyzed for the barrier pillars left with different thickness after mining. It is found that with the barrier pillars of 12 m in thickness, the stability of stope can be ensured during transition of mining. Thus, it is recommended that the thickness of reserved barrier pillars be no less than 12 m.

barrier pillar  /  factor of safety  /  zone safety  /  settlement deformation  /  thickness optimization
Chengzhe SU, Shuaijie JI, Dianming ZHANG. Optimization of Barrier Pillar Thickness in Stope Mining Based on Zone Safety[J]. Mining and Metallurgical Engineering, 2024 , 44 (4) : 155 -158 . DOI: 10.3969/j.issn.0253-6099.2024.04.029
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.04.029
  • Receive Date：2024-02-25
  • Online Date：2026-03-18
  • Published：2024-08-01
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History
  • Received：2024-02-25
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Affiliations
    1.Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Lanzhou 730000, Gansu, China
    2.School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
    3.State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, Anhui, China
    4.Xinjiang Xituo Mining Co., Ltd., Hami 839000, Xinjiang, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2024.04.029
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Citations
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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