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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (2): 62-69.doi: 10.11872/j.issn.1005-2518.2017.02.062

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Study on Mining Sequence of Deep Orebody Under High Stress Environment Below Goaf

DENG Hongwei，YANG Yiquan，DENG Junren，LIU Chuanju，ZHOU Yanlong   

  1. School of Resources and Safety Engineering，Central South University，Changsha    410083，Hunan，China
  • Received:2016-02-23 Revised:2016-04-03 Online:2017-04-28 Published:2017-05-12

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Abstract:

Deep orebody of Xiadian gold mine is located under high stress environment below goaf.In order to obtain a reasonable stoping sequence planning on the principle of underground pressure control，true three-dimensional digital deep orebody model was established by using 3Dmine-Midas/gts coupling method，measured in-situ stress was inverted，and secondary stress distribution rule in deep orebody was studied by Flac3D numerical simulation software.Based on mining environment reconstruction idea and feature of secondary stress，isolation layer project was proposed，of which parameters was determined by numerical simulation；4 feasible mining sequence schemes of alternate-forward，alternate-backward，continuous-forward and continuous-backward were proposed，the results show that the continuous-forward scheme is more advantageous to control underground pressure.As a result，the overall stoping sequence planing was determined，which provides guidance for safe and effective mining of deep ore orebody.

Key words: underground pressure control, high stress, deep orebody, Flac3D software, mining sequence

CLC Number: 

  • TD851

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