Effect of water content of rock and ore on resistivity and its significance to prediction of water inrush in mine
  
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DOI:10.3969/j.issn.1671-4172.2019.05.021
KeyWord:resistivity; water content; metal mine; threat area; water inrush prediction
        
AuthorInstitution
WANG Jianguo (青海大学 地质工程系,西宁 )
LI Wei (青海大学 地质工程系,西宁 )
ZHANG Shizhen (青海大学 地质工程系,西宁 )
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Abstract:
      In the mining process of non-ferrous metal mines, the mine water inrush and permeable accident is one of the most important hidden dangers, and it is also one of the difficulties and hotspots in accurately predicting the possible distribution of water diversion structures and the fracture zone in geological bodies, therefore, it is very important to carry out the prediction of hidden water bodies. In this paper, taking the Chazangcuo copper, lead and zinc deposit as an example, by using resistivity method, some rock and ore samples were collected in the mine, the effect of water content on the resistivity of rock and ore was discussed, the variation trend of geologic bodies resistivity was observed dynamically. Results indicated that the resistivity distribution had a good fitting relation with water content, which extended in the direction of NW and NNE, it was inferred that there may be 2~3 faults or broken zones in the mining area, and there may be three water inrush threatening areas, namely, No.I, No.II and No.III. And the variation law of geologic bodies resistivity can be observed by rock and ore resistivity analysis technology, indicating the spatial distribution of water-bearing fault zone. The research results can effectively avoid or reduce the occurrence of mine water inrush accidents, and reduce casualties and economic losses.
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