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Anti-seepage Measures for Crown Pillar Extraction in Transition from Open-Pit to Underground Mining by Backfilling Method
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Liangbin ZHANG1, Jianyong LENG1, Fang ZHANG2, Xiang HE2, Shaoquan WANG2
Mining and Metallurgical Engineering | 2024, 44(1) : 35 - 38
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Mining and Metallurgical Engineering | 2024, 44(1): 35-38
• MINING •
Anti-seepage Measures for Crown Pillar Extraction in Transition from Open-Pit to Underground Mining by Backfilling Method
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Liangbin ZHANG1, Jianyong LENG1, Fang ZHANG2, Xiang HE2, Shaoquan WANG2
Affiliations
  • 1.Design and Research Institute of Panzhihua Group Mining Co Ltd, Panzhihua 617000, Sichuan, China
  • 2.Northern (Dalian) Engineering & Technology Corporation Ltd, MCC, Dalian 116600, Liaoning, China
Published: 2024-02-01 doi: 10.3969/j.issn.0253-6099.2024.01.008
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The project of transition from open-pit to underground mining in Panzihua Iron Mine was taken for study. Based on the analysis of relationship between storage and discharge in the stope, it is predicted that the accumulated water in open pit will be maximally 5 m deep in the event of a 50-year extreme rainfall, which has little influence on the stability of crown pillar. Numerical simulation of seepage in the case of fault occurring at the bottom of pit shows that fault zones are the main leakage channel of crown pillar. Some special anti-seepage measures can be taken to effectively reduce the leakage of crown pillar.

transition from open pit to underground mining  /  backfilling  /  seepage  /  crown pillar  /  seepage simulation
Liangbin ZHANG, Jianyong LENG, Fang ZHANG, Xiang HE, Shaoquan WANG. Anti-seepage Measures for Crown Pillar Extraction in Transition from Open-Pit to Underground Mining by Backfilling Method[J]. Mining and Metallurgical Engineering, 2024 , 44 (1) : 35 -38 . DOI: 10.3969/j.issn.0253-6099.2024.01.008
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.01.008
  • Receive Date：2023-08-24
  • Online Date：2026-03-20
  • Published：2024-02-01
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History
  • Received：2023-08-24
Funding
Affiliations
    1.Design and Research Institute of Panzhihua Group Mining Co Ltd, Panzhihua 617000, Sichuan, China
    2.Northern (Dalian) Engineering & Technology Corporation Ltd, MCC, Dalian 116600, Liaoning, China
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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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