Certificate in Strata Control - Metalliferous Exam Practice Questions - Certificate in Strata Control - Metalliferous (South Africa) Exam - Certificate in Strata Control - Metalliferous Exam Practice Questions - Certificate in Strata Control

Question 1

In deep South African tabular gold mines subject to rockburst conditions, what is the primary function of a Rapid Yielding Hydraulic Prop (RYHP)?

To maintain a rigid, unyielding force until the surrounding rock mass fails completely To yield at a controlled force under high-velocity dynamic convergence while maintaining support resistance To provide temporary support during drilling only and be removed prior to blasting To serve as a passive timber replacement without any internal pressure relief mechanism

Correct Answer:

To yield at a controlled force under high-velocity dynamic convergence while maintaining support resistance

Question 2

A stope hangingwall has an expected potential unstable fallout height of 1.2 m. Assuming a rock density of 2700 kg/m³ and gravitational acceleration g = 9.81 m/s², calculate the required minimum Support Resistance (SR) in kPa to stabilize this deadweight load.

31.8 kPa 42.5 kPa 25.4 kPa 18.2 kPa

Correct Answer:

31.8 kPa

Question 3

A line of 200 kN RYHPs is installed in a stope with a prop spacing of 1.5 m along strike and 1.2 m along dip. Calculate the support resistance provided by this prop layout.

111.1 kPa 166.7 kPa 88.9 kPa 200.0 kPa

Correct Answer:

111.1 kPa

Question 4

Which characteristic makes stiff composite packs preferable to traditional timber mat packs in deep tabular stopes with high convergence rates?

Composite packs have higher initial stiffness and yield capability, reducing initial stope closure and bed separation Composite packs are completely rigid and do not compress under stope closure Timber mat packs have superior initial stiffness compared to concrete-timber composite packs Composite packs are significantly lighter and easier to assemble manually than pure timber packs

Correct Answer:

Composite packs have higher initial stiffness and yield capability, reducing initial stope closure and bed separation

Question 5

What is a major strata control benefit of placing cemented classified tailings backfill in deep narrow-vein tabular stopes?

It reduces total regional stope closure and Energy Release Rate (ERR), lowering overall rockburst risk It completely eliminates the need for any face area support or tendon installation It increases the stress concentration at the immediate stope face area to enhance rock breaking It acts as a rigid non-compressible pillar with zero volume change under deep overburden pressure

Correct Answer:

It reduces total regional stope closure and Energy Release Rate (ERR), lowering overall rockburst risk

Exam overview

About this Exam

Prepare with the Certificate in Strata Control - Metalliferous Exam Practice Questions - Certificate in Strata Control - Metalliferous (South Africa) Exam practice quiz. This question bank includes 100 questions covering joint, rock, calculate, stope, and support. 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 Strata Control - Metalliferous Exam Practice Questions - Certificate in Strata Control - Metalliferous (South Africa) Exam

This practice set contains 100 questions from the matching question bank and focuses on joint, rock, calculate, stope, and support. 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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Certificate in Strata Control - Metalliferous Exam Practice Questions - Certificate in Strata Control - Metalliferous (South Africa) Exam

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