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Gold Science and Technology >

2018 , Vol. 26 >Issue 6: 736 - 743

DOI: https://doi.org/10.11872/j.issn.1005-2518.2018.06.736

Simulation and Evaluation of Engineering Response Under the Mining of Overlapping-Orebody

  • Jianhua HU ,
  • Chen GAO ,
  • Chun YANG
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  • 1. School of Resources and Safety Engineering，Central South University，Changsha 410083，Hunan，China

Received date: 2017-07-10

  Revised date: 2017-10-31

  Online published: 2019-01-24

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Highlights

The interaction and response law of overlapping-orebody mining are important factors that have significant influence on mining safety.The overlapping-orebody of Huashugou copper mine in Jingtieshan area where the upper iron orebody adjoins the under copper orebody was chosen as the research objects.Based on the coupled 3D Mine-Midas-FLAC3Dtechnology，combined with practical mining and filling process of the mine，a numerical analysis model for the response of FeV orebody engineering under the condition of copper orebody in the filling section was established.Then the data including displacement and stress of stoping tunnel of FeV orebody were obtained and were used to analyze the mining process of FeV orebody.Results show that maximum excavating perturbation during mining and filling process of research area occurs in 2 865 m stoping tunnel，and the maximum displacement is 2.3 cm，the maximum amplitude of stress is 11.34% and the maximum shear stress is 1.27 MPa，respectively.TheZaxis stress in the center of cavity roof remains decreasing，and it transfers to all round.The shear stress in the center of cavity roof keeps unchanged while it around the edge of cavity changes drastically.During the mining process of test stope，2 880 m and 2 895 m stoping tunnel above FeV orebody are in steady state.Consequently，stoping process can be accelerated to boost productivity，so as to improve the recovery rate of ore.

Cite this article

Jianhua HU , Chen GAO , Chun YANG . Simulation and Evaluation of Engineering Response Under the Mining of Overlapping-Orebody[J]. Gold Science and Technology, 2018 , 26(6) : 736 -743 . DOI: 10.11872/j.issn.1005-2518.2018.06.736

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