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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?

Pieces of core that are not hard and sound Signup and view all the answers

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

It is a quantitative index Signup and view all the answers

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

1964 Signup and view all the answers

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

Designing safe and stable mine infrastructure Signup and view all the answers

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

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

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

To design safe and stable mine infrastructure Signup and view all the answers

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

To design safe, stable and economic mine infrastructure Signup and view all the answers