›› 2012, Vol. 33 ›› Issue (S1): 112-116.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Testing study of creep model for tailing cemented backfill and its secondary development based on FLAC3D

ZHAO Kui1, 2, HE Wen1, 2, XIONG Liang-xiao3, YANG Xin4, WANG Xiao-jun5   

  1. 1. Engineering Research Institute, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China; 2. Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources of Ministry of Education, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China;3. Faculty of Architectural, Civil Engineering and Enviroment, Ningbo University, Ningbo, Zhejiang 315211, China; 4. College of Civil Engineering, Chongqing University, Chongqing 400030, China; 5. School of Resources & Environment Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China
  • Received:2012-02-14 Online:2012-09-11 Published:2012-09-21

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Abstract: Great many results about the creep properties of rock have been achieved, while few reports on the cemented backfill’ s creep characters were obtained. In this paper, creep property of cemented backfill is characterized by Hoek-Kelvin model. Cemented backfill creep experiments are firstly conducted in the laboratory, then the parameters of Hoek-Kelvin creep model are identified using particle swarm optimization algorithm. Meanwhile, the sensitivity of creep parameters to the stress level is studied. Results show that the numerical value of EH and η vary little at different loading stress levels, and EK is very sensitive to the change of loading stress level. The proposed creep model for backfill is developed with the software FLAC3D; and it has been used to numerically simulate multi-stage loading on cemented backfill. The numerical results agree well with the experimental ones.

Key words: cemented backfill, creep model, particle swarm optimization algorithm, FLAC3D

CLC Number: 

  • TU 443
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