Mining Geology, Mine Development and Surveying · Mine Development · 2 marks · Multiple choice
Match sinking methods P piling,Q caisson,R cementation,S freezing to applications:1 alternating strong/loose strata where the drum sinks under its weight;2 loose ground near surface;3 heavily water-bearing strata including quicksand;4 fissured water-bearing strata without running sand.
Piling supports loose near-surface ground(2). A caisson’s weight helps it descend through the described strata(1). Cementation seals fissured water-bearing rock(4), while freezing consolidates heavily water-bearing ground including quicksand(3). Thus C.
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