EOSC 210 FINAL EXAM QUESTIONS WITH 100% COMPLETE SOLUTIONS
0 view 0 purchase
Course
EOSC 210
Institution
EOSC 210
EOSC 210 FINAL EXAM QUESTIONS WITH 100% COMPLETE SOLUTIONS
What are the 3 types of aquifers? - Answer- 1. Unconfined - no overlying aquitard
2. confined - aquitards above and below
3. artesian - wells will flow freely IF hydraulic head is above ground surface
Cone of depression - Answer- c...
EOSC 210 FINAL EXAM QUESTIONS
WITH 100% COMPLETE SOLUTIONS
What are the 3 types of aquifers? - Answer- 1. Unconfined - no overlying aquitard
2. confined - aquitards above and below
3. artesian - wells will flow freely IF hydraulic head is above ground surface
Cone of depression - Answer- cone that forms around a well in the water table
Name 4 potential problems from excessive groundwater withdrawal: - Answer- 1. long
term depletion
2. negative effects on water quality
3. negative effects on surface water bodies
4. subsidence due to dewatering and permanent decrease in aquifer yield
Describe saltwater intrusion - Answer- Salt water drawn into aquifers when groundwater
extraction exceeds the recharge. From OVER PUMPING
What are 5 types of groundwater contaminants - Answer- 1. Chlorinated solvents
2. Wood preservatives
3. Gas/oil
4. Metals
5. pesticides and fertilizer
What are 4 types of contaminant remediation? - Answer- 1. Dig and dump
2. Removal by pumping (free phase liquids)
3. Skim off the top of wells or trenches (LNAPL)
4. Bio-remediation - monitored natural attenuation
Rock fall - Answer- - Occur on steep slopes with loose rock
- little or no shear/sliding forces
Topples - Answer- Forward rotation of rock blocks around a point below the block
Describe a landslide and distinguish between the 2 types : - Answer- - Large volumes of
rock/soil moving initially as a coherent mass
Rotational = soil/weak rock collapse along curved rupture surface
, Translational = blocks of strong rock move along a weak fracture plane in the rock /
soild along bedrock
Rock FLOWS - Answer- - Chaotic mix of water and debris
- occur with heavy rain + steep slope + loose sediment
-
Slope stability analysis - Answer- - equilibrium analysis to determine the force
equilibrium conditions
- gives FS or factor of safety
FS = resisting forces / driving forces
**If FS is lower than 1, failure is imminent
Landslide mitigation strategies (3) - Answer- 1. Avoid the problem = move
planned/current infrastructure
2. Prevention = reduce driving/increase resisting forces
3. Protection = accepts landslide occurrence but minimizes the impact
Name 6 ways of preventing/limiting a landslide: - Answer- 1. Remove mass - slide
caused by gravity
2. Add anchors in bedrock
3. Build retaining wall
4. improve drainage
5. rockfall nets/barriers
6. debris flow barriers
5 factors for tunnelling - Answer- 1. intact rock
2. discontinuities
3. in situ-stress
4. pore fluid/water flow
5. time
What risk do discontinuities pose? - Answer- faults and joints may connect to form
natural blocks of rock that can fall or move freely
What is the largest type of earthquake and when does it occur? - Answer- Mega thrust
earthquake. Young, light, buoyant sub-ducts under continental plate and accumulates
strain until rapid 'spring board' release.
What is the approximate time between mega thrust earthquakes on the west coast and
what problems come with this timeframe? - Answer- About 200 years - too long to form
an accurate geological timeline.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
