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Metal Mine ›› 2012, Vol. 41 ›› Issue (12): 1-4+13.

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Mining Method for Recovering Crown Pillar at -580 m Level of Ⅴ# Orebody in Xincheng Gold Mine

Zhang Hongxun1,2,Wang Qingyuan1,Zhu Wancheng1,Jiang Jinbao1,Sha Ou2,Zhu Zhaowen2   

  1. 1.College of Resources & Civil Engineering,Northeastern University;2.Xincheng Gold Mine of Shandong Gold Mining Co., Ltd.
  • Online:2012-12-15 Published:2012-12-28

Abstract: Considering the safety problems for recovering crown pillar at -580 m level of Ⅴ# ore body in Xincheng gold mine, an upward drift mining scheme with backfilling is proposed.Its stope is perpendicular to the strike of the ore body.Division of panel and stope, arrangement of preliminary mining projects, stoping sequence, extraction process, roadway excavation and roof control of the mining scheme were introduced.In order to verify the reasonableness of the proposed mining scheme, stability of roadway and stope was monitored by using rock bolt extensometer and convergence gauge.The results show that the mining method is reasonable.This study may provide theoretical basis and is of important practical significance for crown pillar recovery.

Key words: Crown pillar recovery, Mining method, Back filling method, Ground pressure monitoring