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  Miner's Toolbox
Rock Mechanics

   Miners Toolbox Index Rock Mechanics  Rock Mass Classification  Q-Calculator

Tunneling Quality Index, Q Calculator

 

Tunneling Quality Index Q =(RQD/Jn)*(Jr/Ja)*(Jw/SRF)


 

 

 

 

 

 

 

 

 

Mine Geotechnical News

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