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Gold Science and Technology ›› 2016, Vol. 24 ›› Issue (4): 92-95.doi: 10.11872/j.issn.1005-2518.2016.04.092

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CHEN Chen，ZHUO Yulong，CAO Shirong，FENG Xiao，WANG Xiaojun   

  1. Jiangxi Key Laboratory of High Efficient Utilization of Rare Earth Resources，Jiangxi University of Science and Technology，Ganzhou   341000，Jiangxi，China
  • Received:2016-05-18 Revised:2016-06-26 Online:2016-08-28 Published:2016-11-17

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Abstract:

Blocky rock content of blocky rock cemented filling body is a critical factor determining its carrying capacity.In this paper，uniaxial compression tests are performed on cemented tailing filling bodies having different blocky rock contents with RMT-150C material testing machine.The test results presents the changing rule of the stress-strain of BRCFBs with different blocky rock contents at residual bearing stage.Damage constitutive model and damage evolution equation are obtained by test results based on damage mechanics theory.With block stone content increasing，the damage value corresponding to the peak stress is gradually increased by comparative analysis stress level-strain relation.Analysis shows，accelerated damage growth when the stone content is low （10% or 20%），the damage growth is suppressed when the stone content is high（30%）.

Key words: block stone, residual bearing, damage, constitutive model

CLC Number: 

  • TD853

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