Quiz 4 Flashcards
1
Q
- Limestone formations, whether folded or heavily faulted, are
what type of rocks?
A. deposited by man and machine
B. sedimentary rocks
C. vein-type deposits mineable by underground
D. volcanic origin
E. igneous rocks
A
b
2
Q
- A record of geologic facts in their correct space relations is
called:
A. core log C. geologic map E. pit design map
B. assay map D. aerial photographs
A
C
3
Q
- It is the maximum slope at which any loose materials comes to
rest when poured or dumped in a pile.
A. angle of repose C. working slope E. angle of draw
B. gradient slope D. drain angle
A
a
4
Q
- It is the field of study that is concerned in checking the proper-
ties and behavior of rocks when subjected to force field:
A. strength of materials
B. rock mechanics
C. slope stability
D. ground control
E. soil mechanics
A
b
5
Q
- It is the science of understanding the properties and mechanical
behavior of rocks and rock formation and the nature of stresses
within them and their immediate environment.
A. strength of materials
B. rock surveying
C. soil mechanics
D. mapping and interpretation
E. rock mechanics
A
e
6
Q
- In rock mechanics, ore core logging, RQD means:
A. rock grinding index
B. rock identification
C. rock bond index
D. rock hardness
E. rock quality designation
A
e
7
Q
- A word commonly used in rock mechanics as collective term
for all fractures or features in a rock mass such as joints, faults,
shears, etc. that have zero or relatively low tensile strengths is
called:
A. fracture plan C. lineation E. fabric
B. structure D. discontinuity
A
d
8
Q
- Rock mechanics differs from classical mechanics in:
A. the strength of rocks compared with steel
B. in rock mechanics, the post failure characteristics of rocks is
more useful and significant in mining than the pre-failure ones
C. rock mechanics is applied in mining
D. seismic forces are not considered in classical mechanics.
E. none of these
A
b
9
Q
- One of the elastic properties of rocks is:
A. density C. specific gravity E. weight
B. porosity D. poisson’s ratio
A
d
10
Q
- It is a geologic process where near surface rock or deposits
are altered thru chemical action of water, plants and bacteria and
the mechanical action of temperature.
A. natural deposition C. weathering E. landslide
B. metamorphism D. sedimentation
A
C
11
Q
- In rock mechanics, which of the following conventions is valid
in the stress and strain analysis?
A. compressive normal stresses are taken as positive
B. contractile normal strains are taken as negative
C. compressive normal stresses are taken as negative
D. the sense of positive shear is outward relative to the coordinate
origin
E. the positive directions of the coordinate axes are taken as
negative
A
b
12
Q
- Rock mechanics differ from classical mechanics in terms of?
A. none of these conditions
B. seismic forces are not considered in classical mechanics
C. the strength of rocks compared with steel
D. rock mechanics is applied and appreciated only in mining
E. in rock mechanics, the post failure characteristics of rocks are
more useful and significant in mining than the pre-failure ones.
A
e
13
Q
- 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
14
Q
- It is the ratio of the voids or open spaces w/in a material versus
the total volume of the said material:
A. hollow factor C. moisture E. specific gravity
B. porosity D. expansion ratio
A
b
15
Q
- A rock mass classification that quantifies discontinuity by the
ratio of the length of the individual pieces of core recovered in a
drill, having lengths of 10 cm or longer, and the total length of drill
run:
A. fracture pattern C. fracture spacing E. RQD
B. work index D. rock mass rating
A
e
16
Q
- The ability of rocks to resist compression is called:
A. tensile strength C. shear strength E. rock strength
B. rigidity D. compressive strength
A
di
17
Q
- Which of the following natural materials possess excellent
plastic properties?
A. clay C. lignite E. gypsum
B. anthracite D. limestone
A
a
18
Q
- Which of the following rock formation is characterized by karst
topography?
A. diorite plug C. basalt dome E. coal formation
B. limestone formation D. andesite formation
A
b
19
Q
- 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
20
Q
- It consists of one or more pieces of rock, usually between 1
to 3 meters long, and taken from a particular depth thru diamond
drilling.
A. fish line C. core E. dead man
B. sludge D. blasthole cone
A
C
21
Q
- The strength of a fractured mass is:
A. infinite C. nil E. unlimited
B. zero D. purely frictional
A
b
22
Q
- In map interpretations, limestone formation is always charac-
terized by which of the following: A. wetlands C. karst topography E. overhangs
B. high reliefs D. gentle rolling topography
A
C
23
Q
- 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
24
Q
- When a massive rock mass is faulted, what do you call the
portion that is down thrown?
A. syncline C. footwall E. anticline
B. hanging wall D. plug
A
C
25
Q
- Indirect tensile strength is also called:
A. Brazilian disc test C. ring test E. work index test
B. tri-axial test D. rapture test
A
a
26
Q
- The ratio of the material in its solid state as compared to its
volume when broken is called what?
A. weight/moisture factor C. powder factor E. volume/weight ratio
B. swell factor D. coefficient of expansion
A
b
27
Q
- The rate of change of strain as a function of stress.
A. Modulus of Elasticity
B. Modulus of Rigidity
C. Modulus of Bending
D. Modulus of Plasticity
E. Poisson’s Ratio
A
a
28
Q
- Which of the following methods is most applicable in mapping
or locating wet shears, clays and gravel deposits and in determin-
ing their thicknesses?
A. gravity C telluric E. seismic
B. magnetic D. resistivity
A
d
29
Q
- In interpreting topo maps, overlapping topographic contours
represent which of the following surface formation
A. basin C. dome E. syncline
B. anticline D. overhang
A
d
30
Q
- 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
31
Q
- 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
32
Q
- 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
E. none of these
A
a
33
Q
- Which of the following physical properties of rocks refers to the
weight of said rocks in an equivalent volume of water measured
at sea level.
A. porosity C. tonnage factor E. coefficient of expansion
B. specific gravity D. bond work index
A
b
34
Q
- 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 E. aperture
B. strain D. movement
A
C
35
Q
- The way to describe qualitatively in which stress and strain are
related in a material under load is called:
A. constitutive behavior C. poisson’s ratio E. plasticity
B. elasticity D. stress
A
a
36
Q
- The term used to describe the intact rock between disconti-
nuities is called:
A. rock mass C. aperture E. spoils
B. rock material D. filling material
A
b
37
Q
- The total in-situ medium containing bedding planes, faults,
joints and other structural feature is called:
A. rock material C. lithology E. filling material
B. rock mass D. structure
A
b
38
Q
- It is the nature and distribution of structural features with the
rock mass.
A. stress C. geologic features E. rock material
B. rock structure D. geologic contact
A
b
39
Q
- It is a fracture on which identifiable shear displacement has
taken place.
A. spacing C. persistence E. strain
B. faults D. fissure
A
b
40
Q
- It is the perpendicular distance between adjacent discontinu-
ities.
A. dip C. strike E. geologic contact
B. dip angle D. spacing
A
d
41
Q
- The term used to describe the aerial extent or size of a
discontinuity with a plane.
A. aperture C. aerial photo E. discontinuity
B. persistence D. stereo net
A
b
42
Q
- It is the stress which governs the gross mechanical response
of a porous material.
A. effective stress C. pore pressure E. porosity
B. effective strain D. porosity
A
a
43
Q
- When the rock can sustain further permanent deformation
without losing load carrying capacity, this rock is experiencing.
A. effective stress C. effective strain E. plasticity
B. pore pressure D. ductile deformation
A
d
44
Q
- It is the process by which sudden loss of strength occurs
across a plane following little or no permanent deformation.
A. ductile C. deformation E. yield
B. brittle fracture D. failures
A
b
45
Q
- The most reliable drilling methods of exploring the interior of
a rock mass prior to mining
A. rotary drilling C. percussion drilling E. churn drilling
B. auger drilling D. core drilling
A
d
46
Q
- It is a basic technique used in mapping surface or underground
exposures.
A. structural mapping C. scanline mapping E. stereo netting
B. scanline survey D. aerial mapping
A
b
47
Q
- When the rock reach its maximum strength, usually averaged
over a plane, the rock can sustain under given set of condition.
A. Strain C. Elasticity E. Plasticity
B. Strength D. Stress
A
b
48
Q
- A description of a material used to occupy open spaces in a
discontinuity.
A. Quartz C. Water E. Ice
B. G D. Air
A
a
49
Q
- It consists of loose fragments of rock and soil that serve as
cover for the bedrock.
A. Exposure C. Regolith E. Ground
B. Outcrop D. Soil
A
C
50
Q
- When two or more rocks have different or unlike qualities.
A. Homogeneous C. Heteregenous E. Continuum
B. Isotropic D. Anisotropic
A
C
51
Q
- The strength in rock that will resist tensional forces.
A. Shear Strength C. Tensile Strength E. Rock Strength
B. Compressive Strength D. Peak Strength
A
C
52
Q
- It is ground depression caused by ground movements due to
collapse of an underground cavity.
A. Cavern C. Karst Topography E. Sinkhole
B. Setllement D. Subsidence
A
d
53
Q
- It consists of transported loose fragments containing soils and
broken rocks.
A. Floats C. Alluvium E. Talus
B. Boulders D. Spoils
A
e
54
Q
- A records of geological facts such as geologic structure and
rock types, etc.
A. Topographic Map C. Hydrographic Map E. Military Map
B. Geologic Map D. Index Map
A
b
55
Q
- A surface material derived from the in-situ weathering of rocks.
A. Residual soil C. Talus E. Boulders
B. Colluvium D. Sand
A
a
56
Q
- It is the vertical or inclined boundary surface between air and
rocks.
A. Apex C. Toe E. Slope
B. Berm D. Crest
A
e
57
Q
- It is composed of boulders of igneous rocks mixed with soil
that are cemented together to form a rock mass.
A. Breccia C. Agglomerates E. Lahar Flows
B. Conglomerates D. Tuff
A
C
58
Q
- A body of rocks beneath a mantle of soil and is formed from
the crust of the earth.
A. Dikes C. Bedrock E. Sill
B. Rock mass D. Batholiths
A
C
59
Q
- Shear strength is a material’s ability to
A. resist compression C. resist sliding on a plane E. resist friction
B. resist tension D. withstand weathering
A
C
60
Q
- A rock that is sufficient strong to transmit a compressive force
under a given conditions.
A. Competent Rock C. Intact Rock E. Hard Rock
B. Competent Ground D. Solid Rock
A
a
61
Q
- It is a type of ground that does not require support when a
tunnel is excavated through it.
A. Firm Ground C. Heavy Ground E. Compacted Ground
B. Running Ground D. Competent Ground
A
d
62
Q
- A hard and solid body of rocks that is free of rock defects and
absence of discontinuities.
A. Bedrock C. Dike E. Intact Rock
B. Batholith D. Basalt
A
e
63
Q
- It is consist of loose of rocks and soil that act as cover for a
bedrock.
A. Matte/Regolith C. Spoil E. Colluvium
B. Muck D. Alluvium
A
a
64
Q
- It is concerned with the mechanical responses of all geological
materials including soil.
A.Mineral Mechanics C. Geomechanics E. Engineering Mechan-
ics
B.Rock Mechanics D. Soil Mechanics
A
C