Optimation of Underground Stope Structure Parameters Based on Different Rockmass Stability Classification
Received date: 2018-02-13
Revised date: 2018-05-11
Online published: 2019-01-24
Stope structure parameters selection is the important work after the mining method determined and can directly influence mine capacity,production cycle,mine schedule,mine safety and so on.Taking a Tibet mine for example,based on mining method,firstly,basic parameters,such as joint information were acquired by engineering geology survey and drill core logging.Three-dimensional visualization evaluation of rockmass quality was made on 3Dmine software based on RMR rockmass evaluation method.Secondly,adopting Barton span empirical formula and comparison diagram of Lang B.critical span and Wang J.neural network span,stope critical span was initially identified considering the demand for mining method.Finally,stope permitted exposure area was verified by Mathews stability diagram,and stope structure parameters were determined for different rockmass stability classification in the second phase of underground mining.The specific method and calculation procedure for optimation of stope structure parameters were systematically described in the paper,which can supply the technical reference for similar work in other mines.
Chuanchuan WAN , Guoliang CHEN , Gaoming ZHOU , Shibo YU , Lianku XIE , Xizhuo TANG . Optimation of Underground Stope Structure Parameters Based on Different Rockmass Stability Classification[J]. Gold Science and Technology, 2018 , 26(6) : 761 -770 . DOI: 10.11872/j.issn.1005-2518.2018.06.761
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