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Metal Mine ›› 2020, Vol. 50 ›› Issue (05): 117-123.

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Theoretical Model of Synergetic Mining of Coal and Uranium in Uranium Bearing Coal Deposit

Zeng Sheng,Ye Wenhao,Xu Huaqing   

  1. 1. School of Resource Environment and Safety Engineering,University of South China,Hengyang 421001,China;2. Geological Environment Survey Institute,Gelogical Bureau of Hunan Province Nuclear Insdusty Brigade 306,Hengyang 421008,China
  • Online:2020-05-15 Published:2020-06-12

Abstract: As a kind of dual energy source,uranium bearing coal ore has been paid much attention in the world. It is of great significance for the comprehensive utilization of mineral resources to mine coal and uranium simultaneously from uranium bearing coal ore. The concept of "synergetic mining" provides a new idea for the rational mining of uranium bearing coal ore resources.Based on the analysis of the basic characteristics of uranium bearing coal ore resources and the mining experience of mining in uranium bearing coal deposit,it is considered that the coal mining first affects the groundwater level, which is not conducive to the recovery of the uranium deposits. The formation of radioactivity in the uranium mining first directly affects whether the coal mining can continue, and it is feasible to realize the simultaneous mining of coal and uranium.Therefore, based on the idea of underground synergetic mining of metal deposits, the concept of "synergetic mining" in uranium bearing coal deposit is put forward. The discontinuous uranium bearing coal deposits are divided, segmented and stratified to share the exploration system. The problems of inadequate roof support and low recovery efficiency are solved by adopting the method of partition support.Radon concentration and gas emission are reduced by combined pressure-extraction ventilation. Some technical problems are involved, such as how to partition discontinuous uranium bearing coal deposit, how to merge scattered ore sections, how to set up special security measures in the areas with high uranium grade and high gas content in the stopping area, and how to integrate the whole deposit with drainage. In the future, it is still necessary to carry out study and practice on the innovation of synergetic mining in uranium bearing coal deposit method and engineering technology to further enrich the theory of synergetic mining in uranium bearing coal deposit.

Key words: Synergetic mining, Uranium bearing coal deposit, Occurrence state, Mining method