- Expansion
- Shrinkage
- Contraction
- Rise
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Q) Removal of overburden is associated with the following of the materials being removed:
📝 Explanation
a. Expansion
Expansion; Removal of overburden involve fragmentation due to blasting. The fragmented rocks are also vulnerable to more weathering. The previously loaded rocks get relaxed with the release of the forces leading to volume expansion. Creation of new surface area is associated with expansion of volume.
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