Question 1
A 1.5 m drill run yields core pieces of the following lengths: 12 cm, 8 cm, 22 cm, 5 cm (fractured), 18 cm, 35 cm, and 10 cm. What is the Rock Quality Designation (RQD) for this drill run?
Correct Answer:
65%
Question 2
Which five basic parameters are evaluated to obtain the basic Rock Mass Rating (RMR89) according to Bieniawski?
Correct Answer:
UCS, RQD, joint spacing, joint condition, and groundwater condition
Question 3
In Barton's Q-system equation Q = (RQD / Jn) * (Jr / Ja) * (Jw / SRF), what physical aspect of the rock mass does the quotient (RQD / Jn) represent?
Correct Answer:
Relative block size
Question 4
A underground drive in norite exhibits RQD = 80%, joint set number Jn = 9 (three joint sets), joint roughness Jr = 2 (smooth undulating), joint alteration Ja = 1 (unaltered), joint water reduction Jw = 1 (dry), and stress reduction factor SRF = 2.5 (medium stress). Calculate the rock mass Q value.
Correct Answer:
7.1
Question 5
According to Hoek and Brown, the Geological Strength Index (GSI) is primarily estimated from which two visual geological observations?
Correct Answer:
Rock mass structure (interlocking of rock blocks) and surface condition of discontinuities
Question 1
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Prepare with the Certificate in Rock Mechanics Exam Practice Questions - Certificate in Rock Mechanics (South Africa) Exam practice quiz. This question bank includes 100 questions covering rock, sigma, stress, calculate, and mass. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Certificate in Rock Mechanics Exam Practice Questions - Certificate in Rock Mechanics (South Africa) Exam

This practice set contains 100 questions from the matching question bank and focuses on rock, sigma, stress, calculate, and mass. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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