The document discusses underground metal mining methods. It describes operations like exploration, development, and mining of ore from a stope. Stoping methods are classified based on support as naturally supported, artificially supported, or caved stopes. Naturally supported methods include room and pillar mining and sublevel stoping. Artificially supported methods include shrinkage stoping and cut and fill stoping. Caved stope methods include sublevel caving and block caving. Parameters to consider when choosing a stoping method include geo-mechanical conditions, ore reserves and grades, costs, productivity, and available equipment.

2. Underground Metal Mining
Methods

3. Underground mining operations
1. Exploration and characterization of
the deposit
2. Opening and development of the
deposit
3. Mining of ore from stope
Figs of UG metal mining methodsFig.
1.ppt

4. Operations in mining of ore from
a stope
• Stope development
• Stoping: “Stoping” means the
operation of excavating ore.
• Ore Handling: Removal of ore from
the stope.

5. Classification of stoping methods
based on support

6. Naturally supported Stopes
• Room and pillar miningFigs of UG
metal mining methodsFig 2.ppt
• Sublevel stoping (Blast hole
stoping)Figs of UG metal mining
methodsFig 5.ppt

7. Artificially supported stopes
 Shrinkage stopingFigs of UG metal mining
methodsFig 7.ppt
 VCR method of stopingFigs of UG metal
mining methodsFig 8.ppt
 Cut and Fill StopingFigs of UG metal mining
methodsFig 9 .ppt
 Square set stoping
 Longwall mining &
 Reusing stoping.

8. Caved stopes
• Sublevel cavingFigs of UG metal mining
methodsFig 10.ppt
• Block CavingFigs of UG metal mining
methodsFig 11.ppt
• Top Slicing (mining under a mat that together
with caved capping, follows the mining
downward in successive stages).

9. Combined stoping
Combination of
• Open and filled stopes Figs of UG
metal mining methodsFig 12 .ppt
• Open and caved stopes. Figs of UG
metal mining methodsFig 13 .ppt

10. The parameters to be examined
when choosing a stoping method
• Geo-mechanical conditions of the deposit
-Dip and geometry of the deposit.
-Rockmass strength of the ore-zone and walls
-Span limit of HW

11. • Ore reserves and grades
• Mining cost and ore valuation
• Productivity and mechanization.
• Mining Equipment and productivity