Geology: Core Storage and Rock Sampling in Mining
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Geology: Core Storage and Rock Sampling in Mining

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Questions and Answers

What is the primary basis of the Rock Quality Designation (RQD) system?

  • Core diameter measurements
  • Geological and hydrological data
  • Core recovery percentage (correct)
  • Laboratory tests

    • What is the optimal core diameter for Rock Quality Designation (RQD)?

  • 47.5 mm (correct)
  • 70 mm
  • 50 mm
  • 60 mm

    • What is the purpose of Rock Quality Designation (RQD) in mine infrastructure design?

  • To predict the risk of rockfalls
  • To estimate the support required for excavations (correct)
  • To estimate the cost of excavation
  • To identify high-quality rock zones

    • What should be excluded from the core recovery percentage in RQD?

    <p>Pieces of core that are not hard and sound</p> Signup and view all the answers

    What is the main advantage of using Rock Quality Designation (RQD) in mine design?

    <p>It is a quantitative index</p> Signup and view all the answers

    What is the year in which Rock Quality Designation (RQD) was developed?

    <p>1964</p> Signup and view all the answers

    What is the primary application of Rock Quality Designation (RQD) in mine design?

    <p>Designing safe and stable mine infrastructure</p> Signup and view all the answers

    What is the limitation of using Rock Quality Designation (RQD) in isolation?

    <p>The actual geology of the new mine may be significantly different</p> Signup and view all the answers

    What is the purpose of using computer-based analyses in geomechanics?

    <p>To design safe and stable mine infrastructure</p> Signup and view all the answers

    What is the main goal of using rockmass rating systems in mine design?

    <p>To design safe, stable and economic mine infrastructure</p> Signup and view all the answers

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