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Study on Natural Caving Mining Method Based on Multi-numerical  Simulation Method

ZENG Qingtian1，2，LIU Kewei1，YAN Ti2，WANG Liguan1   

  1. 1.School of Resources and Safety Engineering，Central South University，Changsha   410083，Hunan，China；
    2.Yuxi Mining Co., Ltd.，Yuxi   653100，Yunnan，China
  • Received:2014-09-09 Revised:2014-10-25 Online:2015-02-28 Published:2015-04-07

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Abstract:

With the restriction of complex geological conditions and because of the high technical level of natural caving mining method，a lot of preliminary work on mining theory study and technology research has to be carried out before actual natural caving mining operations.In order to realize the scientific and effective application of natural caving mining technology，various functional advantages of numerical analyzing software have been fully exploited in this paper.Taken the actual application of natural caving mining method in Xuejiping copper mine as an example，with the help of the superior modeling function of MIDAS，the complex mechanical calculation model has been established.Meanwhile，by using the coupling technology of MIDAS and FLAC3D，the conversion of numerical calculation model from MIDAS to FLAC3D has been realized.The caving area for natural caving mining has been simulated and calculated in FLAC3D.By using the particle flow discrete element method in PFC2D software，ore drawing process has been simulated，and then the rationality of poly-draw-points drawing method and the suitable drawing intervals have been analyzed.Therefore，by the joint application of numerical analysis software，numerical calculation in natural caving mining and the simulation of drawing process have been realized. It is of great guiding importance in actual application of natural caving mining technology.

Key words: numerical simulation, MIDAS software, FLAC3D software, natural caving mining method, particle flow, PFC2D software

CLC Number: 

  • TD853

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