The primary cause of failure in a rock tunnel roof is:
A. Earth pressure
B. Bending tension
C. Jointing and lack of support
D. Gravity
Answer: Option C
Solution (By Examveda Team)
Rock tunnel roofs typically fail due to jointed rock masses and insufficient support, leading to blocks falling or sliding.This Question Belongs to Geological Engineering >> Rock Mechanics And Rock Engineering
What does UCS stand for in rock mechanics?
A. Ultimate Compression Shear
B. Uniaxial Compressive Strength
C. Uniform Core Strength
D. Unconfined Compression Standard
Which test is commonly used to determine tensile strength of rock?
A. Point load test
B. Slake durability test
C. Brazilian test
D. UCS test
Rock mass rating (RMR) system is used for:
A. Water quality classification
B. Rock load estimation
C. Soil permeability analysis
D. Slope stability in soils
What does the term �anisotropy� in rock mechanics refer to?
A. Isolated fractures
B. Uniform grain structure
C. Direction-dependent properties
D. Complete randomness
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