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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (5): 67-72.doi: 10.11872/j.issn.1005-2518.2017.05.067

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Research and Application of Support Technology Without Legs in Sanshandao Gold Mine

MA Minghui1，ZHU Mingde2，CHEN Zihui1，FANG Cheng1   

  1. 1.Sanshandao Gold Mine，Shandong Gold Mining（Laizhou）Co.，Ltd.，Laizhou    261442，Shandong，China；
    2.Deep Mining Laboratory of Shandong Gold Group Co.，Ltd.，Laizhou    261442，Shandong，China
  • Received:2017-06-15 Revised:2017-08-16 Online:2017-10-30 Published:2018-02-12

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Abstract:

Xishan mining area of Sanshandao gold mine has gone into operation for 27 years from 1989，it reserved many high grade top and bottom pillar orebody effected by price and grade fluctuation.As some of the complicated occurrence conditions orebodies haven’t been mined when the gold prices is in the doldrums.Mining of top and bottom pillar orebodies faces several technical problems，such as lower strength of the upper cover body，complex surrounding rock condition and resources recovery difficulty etc.The supporting technology of top and bottom pillar orebody in Xishan mining area of Sanshandao gold mine is studied combined with theoretical analysis and field industrial test.The results can provide scientific instruction for determining the support scheme of  mining of top and bottom pillar orebody.By innovative using support technology without legs，more than 3 000 tons gold ore was successful stoped in S10190 stope.It also can avoid the steel support knocked down by scraper，reducing the application amount of support material such as I-beam and timber.The technology let the mechanization operation efficiency promoted to improve the mining efficiency of stopes，it has good economic and social results.

Key words: broken orebody, artificial bottom, mining plan, supporting plan, supporting technology, support without legs, mining efficiency

CLC Number: 

  • TD953

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