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Metal Mine ›› 2015, Vol. 44 ›› Issue (04): 94-96.

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Recovery Method of Roof and Bottom Pillars in Mined-out Area with Aid of Filling Body

Shi Dongfeng   

  1. Suichang Gold Mining Co.,Ltd.,Suichang 323304,China
  • Online:2015-04-15 Published:2015-08-04

Abstract: The residual roof and bottom pillars in mined-out area of shallow-hole shrinkage stope are retrieved,then the treatment measures that dry waste rocks from drilling are filled into the mined-out area are adopted in Suichang Gold Mine.With the aid of the filling body used as drilling,ore removal and other working platforms,the monitoring measure like secondary stress test (photoelastic stressmeter) is applied to retrieve the residual roof and bottom pillars safely.It eliminated the potential hazard in safety,and reduced the accumulation of waste rocks.Hence,a certain social and economic benefit was obtained.

Key words: Mined-out area, Dry filling, Working platform, Roof and bottom pillar, Photoelastic stressmeter