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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 18    No. 1    January 2008

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New mining technique with big panels and stopes in deep mine
WANG Yi-ming(王贻明)1, WU Ai-xiang(吴爱祥)1, 2, CHEN Xue-song(陈学松)1,YANG Bao-hua(杨保华)1, SU Yong-ding(苏永定)1

1. School of Resource and Safety Engineering, Central South University, Changsha 410083, China;2. School of Civil and Environment Engineering, Beijing University of Science and Technology,Beijing 100083, China

Abstract: For the purpose to suit the bad mining technical conditions, such as deep imbed, gentle dip angle, and high initial stress in Dongguashan deposit, the stoping scheme was optimized. The new mining technique, with temporary curtain walls, large panels and stopes, was achieved as well. The deposit model, which was built through the DATAMINE, was led into FLAC3D for numerical simulation. Based on these, the stabilities of pillars and stopes were analyzed. On the other hand, the impact of output stability by new scheme was verified with the help of optimization planning theory. The results show that stopes and curtain walls are safe when the width of temporary curtain walls between panels are 18 m. The length and width of stope increase to 78 m (82 m) and 18 m respectively, and those of panel increase to 300−500 m and 100 m respectively. The commercial test indicates that the new scheme can attain the aims of simpler production organization, better stope ventilation and work condition, smaller quantities of development and cutting, and 2/3 of equipments as before with the stable output. The pillar stoping technique is credible and valuable.

 

Key words: deep well; high initial stress; stoping scheme; optimization

ISSN 1672-7029
CN 43-1423/U

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