Question

With reference to tunnelling which of the following factors, are to be considered for deciding the size of the shaft:
1. System used for hoisting
2. Size of the muck car
3. Quantity of muck to be lifted
4. Eventual use of the shaft

Answer 1

Correct Answer - Option 3 : Quantity of muck to be lifted

Explanation:

Factors considered for deciding the size of the shaft:

• Quantity of ore/muck to be lifted
• Winding plant
• Vehicle of transport
• Depth
• The number of men to be worked underground
• Amount of water
• Ventilation
• The character of the ground
• Capital outlay
• Operating expense