Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

zRock Mechanics > 2022 Rock Mech Review > Flashcards

2022 Rock Mech Review Flashcards

1
Q
  1. It is the theoretical and applied science of the mechanical behavior of rock masses.
    a. Rock mechanics c. Soil mechanics
    b. Geo-mechanics d. Structural geology
A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q
  1. The concept that used to describe the intensity of internal forces set up in a body under the influence of a set of applied surface force.
    a. Force c. Stress
    b. Strain d. Movement
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  1. The term used to describe the intact rock between discontinuities.
    a. Rock Mass c. rock material
    b. Aperture d. filling material
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q
  1. It is the total in situ medium containing bedding planes, faults, joints and other structural feature.
    a. Rock material c. rock mass
    b. Lithology d. structure
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q
  1. The fractures on which identifiable shear displacement has taken place.
    a. Spacing c. Persistence
    b. Faults d. discontinuity
A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. The perpendicular distance between adjacent discontinuities.
    a. Dip c. Strike
    b. Dip angle d. Spacing
A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. When the rock reach its maximum stress, usually averaged over a plane, the rock can sustain under a given set of conditions.
    a. Yield c. effective
    b. Strength d. Stress
A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. The term used to describe material separating the adjacent rock walls of discontinuities.
    a. Filling c. Intrusion
    b. Vein d. Contact rocks
A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q
  1. Term used to describe the aerial or size of a discontinuity with a plane.
    a. Aperture c. Persistence
    b. Aerial photo d. Stereo net
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
  1. It pertains to the surface unevenness and waiveness of the discontinuity relative to its mean plane.
    a. Contour Line c. Persistence
    b. Roughness d. Texture
A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q
  1. The distance separating the adjacent rock walls of an open discontinuity in which the intervening space is filled with air or water.
    a. Filling c. Aperture
    b. Dip d. Spacing
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
  1. A most reliable way of exploring the interior of a rock mass prior to mining.
    a. Geochemistry c. Core drilling
    b. Geo-statistics d. Geophysics
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
  1. It is the process by which sudden loss of strength occurs across a plane following little or no permanent deformation.
    a. Ductile c. Deformation
    b. Brittle fracture d. Failures
A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. When rock can sustain further permanent deformation without losing load carrying capacity, this rock is experiencing
    a. Effective stress c. failure
    b. Strength d. ductile deformation
A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
  1. Water pressure reduces stability of pit slope by:
    A. reducing the shear strength of potential failure surfaces
    B. reducing the tensile strength of potential failure surfaces
    C. increasing the shear strength of potential failure surfaces
    D. increasing the tensile strength of potential failure surfaces
A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
  1. It is the stress, which governs the gross mechanical response of a porous material.
    a. Effective stress c. Effective strain
    b. Pore pressure d. porosity
A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
  1. In rock mechanics, the ratio of the stress to the strain is called:
    A. tensile strength C. poisson’s ratio E. shear strength
    B. rapture limit D. modulus of elasticity
A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
  1. The process of ejecting a mixture of cement and sand into the crevices of rocks, usually through a borehole drilled into the rock to be grouted.
    A . guniting C. grouting E. sealing
    B. shotcreting D. rockbolting
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q
  1. The tensile strength of a fractured mass is:
    A. unlimited C. zero E. infinite
    B. purely frictional D. greater than 1
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q
  1. Which of following refers to the maximum slope at which a heap of loose material can stand without sliding?
    A. angle of draw C. drainage angle E. working slope
    B. gradient slope D. angle of repose
A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q
  1. Which of the following physical properties of rocks refers to the ratio between the volume of voids or open spaces inside a rock mass and the total volume of said rock mass or material?
    A. permeability C. porosity E. bond work index
    B. expansion ratio D. specific gravity
A

c

19
Q
  1. In rock mechanics, what do you call the rock mass designation that quantifies discontinuity by the ratio of the length of the individual pieces of core recovered in a drill and the total length of the drill run?
    A. work index C. rock mass rating E. RQD
    B. fracture spacing D. fracture pattern
A

e

20
Q
  1. Which of the following natural properties possess the best elastic properties?
    A. limestone C. diorite E. dacite
    B. gypsum D. clay
A

d

21
Q
  1. Rocks can virtually withstand unlimited load provided that:
    A. it is initially rock bolted
    B. the load is applied slowly
    C. enough confining pressure is provided
    D. artificial support is installed
    E. a long period of loading time is allowed.
A

c

22
Q
  1. Which of the following physical properties of rocks refers to the ability of rocks that resist shearing?
    A. rock work index C. tensile strength E. compressive strength
    B. rigidity D. shear strength
A

d

22
Q
  1. Which of the following physical properties of rocks refers to the ability of rocks that resist shearing?
    A. rock work index C. tensile strength E. compressive strength
    B. rigidity D. shear strength
A

e

23
Q
  1. In slope stability analysis of a mine pit, which of the following is necessary to address a slope stability problem?
    A. characteristics of the rock mass
    B. drainage system of the pit
    C. blasting design
    D. equipment used in the pit operation
    E. all of the above
A

e

24
Q
  1. Transverse strain divided by the longitudinal strain is
    a. Poisson’s Ratio b. modulus of elasticity
    c. shear modulus d. shear
A

a

24
Q
  1. The maximum stress that the rock material can sustain under a given set of condition.
    a. bearing capacity b. hardness c. peak strength d. malleability
A

c

25
Q
  1. The stress existing in a rock mass before the excavation of an opening.
    a. in-situ stress b. tangential stress c. shear stress d. induced stress
A

a

26
Q
  1. Why are smaller rock samples, when tested in the laboratory, stronger than larger ones?
    a. Smaller samples appear stronger due to laboratory equipment’s rigidity.
    b. Smaller samples contains less of the in-situ rock’s natural fractures.
    c. Laboratory procedures always follow the strain-controlled, and not the stress-controlled, testing.
    d. Smaller specimens are made stronger by the effect of friction offered by the steel platens.
A

b

27
Q
  1. Strain is defined as
    a. the change in length divided by the original length
    b. the original length divided by the change in length
    c. the force causing the deformation divided by the change in length
    d. the change in length divided by the force that caused the deformation
A

a

28
Q
  1. The stress above which the stress-strain relationship is not anymore directly proportional.
    a. failure point
    b. yield point
    c. hysterisis
    d. permanent set
A

b

29
Q
  1. Brazilian Test is
    a. direct tension test
    b. indirect tension test
    c. compressive strength test
    d. direct shear test
A

b

30
Q
  1. It is zone of relaxation or loosening around the perimeter of an excavation formed as a result of of the stress redistribution that occurs following excavation.
    a. Vadose Zone c. Natural Arch Formation
    b. Failure Point d. Yield Point
A

c

31
Q
A

b

32
Q
  1. It generally consist of plain steel rods with a mechanical anchor at one end and a face plate and nut at the other.
    a. Shotcrete b. Rock Bolt c. Steel Arches d. Rock Mesh
A

b

33
Q
  1. This type of support imposes a predetermined load to the rock surface at the time of installation.
    a. Passive Support b. Active Support c. Reinforcement d. Strata Control
A

b

34
Q
  1. It is defined as the resisting forces divided by the driving lateral force.
    a. Factor of Safety c. Modifying Factor
    b. Angle of Slide d. Angle of Repose
A

a

35
Q
  1. It is a type of slope failure which results from two planar geologic structures intersecting to form a detached tetrahedron of material.
    a. Wedge Failure b. Rotational Failure
    b. Toppling d. Planar Failure
A

a

36
Q
  1. It is the characteristic property of a rock or soil that measures how well it resists being deformed or broken by forces, such as, gravity.
    a. Cohesion c. Angle of Internal Friction
    b. Permeability d. Density
A

a

37
Q
  1. Which of the following factors contribute in slope failures?
    a. Rock Properties c. Water pressure in cracks
    b. Seismic Effects d. All of the above
A

d

38
Q
  1. It is a recent rock mass classification with a heavy reliance on geological observations and less on numerical values.
    a. Rock Load d. Lauffer’s Stand Up Time
    b. Geological Strength Index d. Tunnelling Quality Index
A

b

39
Q
  1. The recommended core size by the International Society of Rock Mechanics in obtaining RQD.
    a. NX b. AX c. BX d. PX
A

a

40
Q
  1. In slope stability analysis of a mine pit, which of the following is necessary to address a slope stability problem?
    a. Characteristics of the rock mass
    b. Drainage System of the Pit
    c. Blasting Design
    d. All of the above
A

d

40
Q
  1. This type of test is used to evaluate shales and weak rocks that may degrade in service environment.
    a. Uniaxial Compressive Strength Test
    b. Triaxial Compressive Strength Test
A

d

41
Q
  1. These fractures are of tensile origin developed perpendicular to the bedding plane, and are open fractures with no evidence of shear movement.
    a. Shear Fractures c. Transform Fractures
    b. Hybrid Fractures d. Dilational Fractures
A

d

42
Q
  1. The normal stress components that act on the principal planes.
    a. Principal Stress c. Effective Stress
    b. Shear Stress d. In-Situ Stress
A

a

43
Q
  1. It is the ratio of the proportional decrease in a lateral measurement to the proportional increase in length in a sample of material that is elastically stretched.
    a. Tensile Strength c. Poisson’s Ratio
    b. Modulus of Elasticity d. Porosity
A

c

44
Q
  1. The ability of rocks to resist compression is called:
    a. Tensile Strength
    b. Shear Strength
    c. Compressive Strength
    d. Rock Strength
A

c

zRock Mechanics (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions