Table of Contents
- 1 What are the disadvantages of a shaft headgear?
- 2 What are the advantages of shaft mining?
- 3 What is one advantage to using underground mining?
- 4 What is the advantage and disadvantage of underground mining?
- 5 What are the advantages of underground mine?
- 6 What are the disadvantages of shaft mining?
- 7 What are shafts and headframes in mine hoisting?
- 8 What are the advantages and disadvantages of sur surface mining?
What are the disadvantages of a shaft headgear?
Design: make a list of materials and work out thebudget(30 minutes)
Item | cost per unit |
---|---|
Labour costs | |
project manager | R 30 000 per month |
engineers | R 30 000 per month |
artisans | R 25 000 per month |
What are the advantages of shaft mining?
So what about the benefits?
- Shaft mines can extended the deepest.
- One of the easiest ways to obtain coal and other materials buried deep underground out of reach for surface mining.
- As seen in the area, mining creates many jobs.It also brings people to places with lower populations.
What are the advantages of headgears?
Speeds up the orthodontic process – One of the main benefits of headgear is that it can help to speed up treatment time in orthodontic situations that may otherwise be complex and time-consuming to treat. Exerts additional force – In most cases, the back molars will provide enough support to properly move the teeth.
What is one advantage to using underground mining?
The major advantages of underground mining over open pit mining are lessened environmental impacts, greater selectivity, and reduced exposure to weather. Much less land surface is necessary for the operation of an underground mine than for an open pit mine of the same production size.
What is the advantage and disadvantage of underground mining?
Explanation: Shallow mineral or coal deposits can be economically mined by open-pit or strip mines. However, with deeper mineral or coal deposits it becomes very costly to remove a great deal of overburden in these kinds of settings. So, in these cases underground mining is more cost effective.
What are disadvantages of underground mining?
Although there are opponents and proponents of underground mining, the disadvantages include destruction of land, surface subsidence, abandoned shafts, extensive surface spoil heaps, mine explosions, collapses and flooding. That doesn’t incorporate the costly price tag that comes with underground mining.
What are the advantages of underground mine?
What are the disadvantages of shaft mining?
What are the disadvantages of shaft mining? Although there are opponents and proponents of underground mining, the disadvantages include destruction of land, surface subsidence, abandoned shafts, extensive surface spoil heaps, mine explosions, collapses and flooding.
How deep does the shaft of a mine shaft go?
The shaft goes straight down into the ground under the wheels of the headgear, sometimes kilometres deep. One of the problems with mining is that eventually the ore, or metal, will run out.
What are shafts and headframes in mine hoisting?
The desisgn and construction of shafts is an important aspect in mine hoisting systems. Please see the Shaft construction article for more information. Headframes support the sheave wheel that the hoist ropes pass over to reach the drum hoist or the friction hoist itself.
What are the advantages and disadvantages of sur surface mining?
Surface mines offer advantages and disadvantages when compared to underground mining. Amongst the advantages are that it is cheaper, can recover more of the resource (usually up to 100\% within the mining excavation), is safer and can use larger-scale mining equipment offering higher production rates.
https://www.youtube.com/watch?v=xzZcpdqF59w