Chp 7 Mass Wasting

Question 1

Define Mass Wasting:

Answer 1

It is the movement of solid material down a slope due to the action of gravity.

Question 2

What are the Classifications of Mass Wasting?

Answer 2

There are 4 classifications to Mass wasting:
1. Creep
Refers to the slow downslope movement of soil.

2. Flow
   Descending mass moving like a viscous fluid.
3. Fall
   materials free falls or bounces of a cliff.

Freefall
4. Slide
descending mass remains relatively intact, and descends along well-defined
surfaces.
There are 2 types of slides:
- translational slide
movement along plane and parallel to motion
- rotational slide
movement along a curved surface.

Question 3

What are the different ways of preventing landslides?

Answer 3

Preventing Rock Fall
- Remove loose material
- Stitch the slopes together.

Preventing mass wasting of soil:
- Construct retaining wall with drains
- Don’t oversteepen slopes during construction.
- Remove all rock that is prone to sliding
- Cover roads