Exam (elaborations)
APSC 151 WEEK 3 QUESTIONS AND ANSWERS
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APSC 151 WEEK 3 QUESTIONS AND ANSWERS
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Name: Score:93 Multiple choice questions
Definition 1 of 93
An earthquake is the vibration of Earth produced by the rapid release of energy
- Earthquakes generate seismic waves that radiate and travel throughout the earth
- Most earthquakes occur along faults associated with plate boundaries
Brittle slip then elastic rebound
- Rocks on both sides of a fault are deformed by tectonic forces
- Rocks bend and store elastic energy
- After rupture, rocks spring back with elastic rebound
- Rebound radiates seismic waves (like a spring)
magnitude
anticline
earthquake
epicentre
Definition 2 of 93
- keeps a mixture of earth material and water under pressure at the face to prevent failure
- support is installed robotically within TBM
density seismic exploration
natural disasters
earth pressure balance TBM
rotary percussion drilling
,Definition 3 of 93
erects liner within shield
shear stress
siesmology
open gripper tbm
shielded TBM
Definition 4 of 93
uses friction to propel across
compressional stress
open gripper tbm
Permeability
road header
Definition 5 of 93
Seismic methods measure the time taken for waves to travel through the material from
transmitter to receiver
- Sonic velocity = travel distance/travel time
*- Velocity is higher in metallic minerals
- Velocity is lower in sediments
- Mafic rocks have higher velocity than Felsic*
elastic deformation
density seismic exploration
earth pressure balance TBM
San Francisco Earthquake of 1906
,Definition 6 of 93
Earthquake damage intensified by aftershocks
silt and clay
Nepal earthquake
Permeability
earthquake
Definition 7 of 93
the ability of fluid to flow through a porous solid
Permeability
diaphram wall
intensity
silt and clay
Definition 8 of 93
- raft or floating
- friction piles
- piers
elastic deformation
types of foundations
Nepal earthquake
open gripper tbm
, Definition 9 of 93
point on surface above the focus
- At least 3 seismic station recordings are needed
- Time between arrival of the first P wave and the first S wave is calculated
- Travel-time graph is used to determine the station's distance to the epicentre
ductility
specific weight
epicentre
anticline
Definition 10 of 93
- Electromagnetic energy is transmitted through soil and rock instead of air
- Energy is backscattered from boundaries of strata that have contrast in electrical properties
Electromagnetic Ground Penetrating Radar
electromagnetic surveying
engineering properties of quartz
specific weight
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