Short-hole Shrinkage Stoping

Short-hole Shrinkage Stoping

Air-leg rock drill is adopted to drill horizontal holes. One third of ore is discharged, while the other is left as the temporary working platform for next-stage drilling and blasting. After ore drawing, such ore is discharged in a centralized way. Ore is transported by loader onto the mine car in the ore drawing roadway, and the car is driven by electric locomotive.

TECHNOLOGY CHARACTERISTIC

Sharply inclined, basically stable, and ultrathin-to-thin orebodies;

Ore without agglomeration and spontaneous combustion.

Simple structure, small amount of stope preparation, easy technology and low dilution rate.

TECHNICAL INDEX

Stoping Method

Production Capacity (t/d)

Loss Rate (%)

Dilution Rate (%)

Short-hole shrinkage stoping

80-150

8-15

8-10

MODE OF TRANSPORT

There are many transport methods, such as rail transport, trackless transport and belt conveyor. The specific method should be determined based on the orebody development scheme, transport volume and distance, mineral composition, ore properties, mining method and techno-economic comparison results.