Lecture 03-08-2017 Flashcards
1
Q
Aberfan, South Wales
A
Landslide of mine overburden (spoil bank) resulting in casualties.
2
Q
3 reclamation steps:
A
- Grading
- Topsoil replacement
- Stabilize with revegetation
3
Q
“Room and pillar” mining
A
Windsor Salt Mine
4
Q
Rock bolting
A
Ceiling and walls in a mine held in-place by bolts.
5
Q
Solution mining
A
Water pumped into rock salt to control the dimensions of the dissolved underground spaces
6
Q
Zig-zag pattern of piplines
A
To allow for expansion and contraction (e.g., Trans-Alaskan Pipeline).
7
Q
Subsistence
A
Lowering of land surface through natural and anthropogenic means.
8
Q
Overbreak zone
A
Where a tunnel has been over-excavated.
