What is deep coal mining and open cast mining? What are the advantages and disadvantages?

Question

Andrew Armstrong · Accepted Answer

Wh n the coal is located just below the Earth's surface w us open cast mining.

When coal is located in deep below Earth we have to adopt deep mining.
Open cast mining.Only remove the top layer debris of rocks and w get coal..Huge trucks can come down through slopes and remove and load, transport coal..This is cheaper and less dangerous.
Deep mining require drilling deep shafts few kilometer down and then make horizontal passages..possibility of flammable gases risk always there so forced ventilation transport lifts etc are involved. THis is costly and risky.

Ian Ashland · Answer

undefined Deep coal mining involves extracting coal from deep underground mines using various methods such as shaft mining and drift mining. On the other hand, open-cast mining, also known as open-pit mining or surface mining, involves extracting coal from large open pits or quarries near the surface of the earth.

Advantages of deep coal mining:
1. Access to deeper coal reserves.
2. Higher coal production rates compared to surface mining.
3. Reduced surface disturbance and environmental impact.

Disadvantages of deep coal mining:
1. Higher operational costs due to the need for specialized equipment and safety measures.
2. Increased risk of accidents and fatalities for miners.
3. Potential for subsidence and ground instability.

Advantages of open-cast mining:
1. Lower operating costs compared to deep mining methods.
2. Higher productivity and extraction rates.
3. Less hazardous working conditions for miners.

Disadvantages of open-cast mining:
1. Significant environmental impact, including deforestation, habitat destruction, and soil erosion.
2. Disruption of local communities and displacement of populations.
3. Generation of large quantities of waste rock and soil, leading to landscape degradation.

Overall, both deep coal mining and open-cast mining have their advantages and disadvantages, and the choice between the two methods depends on factors such as geological conditions, economic feasibility, and environmental considerations.