1. Form and reserve position (flat-tilted-up)
2. Topographic contours and roof / floor coal (box set's first cut / first-cut box)
3. Stripping Ratio
PRINCIPLE:
1. Expose the direction of the high wall into the low wall (tilt-up)
2. Expose the direction of the low wall into the high wall (flat-sloping)
3. Mining the direction opposite to the direction of water
4. Make the first box-cut coal at the lowest elevation
Resources Oblique - Vertical
Resources Flat - Sloping
CONTOUR EFFECT ON COAL MINING CONCEPTS
SR EFFECT OF MINING ON THE CONCEPT
1. LOW STRIPPING RATIO
2. HIGH STRIPPING RATIO
TYPICAL MINING SEQUENCE
a. Drilling & Blasting
b. Overburden Removal
c. Coal Exposing
d. Coal Extraction
MINING SEQUENCE-ILLUSTRATION
STANDARD PARAMETERS
1. Production Process
Overburden Removal
Coal Getting
Coal Crushing and Barge Loading
2. Road Width
STANDARD PARAMETER OF OPERATION ROAD DESIGN
3. Front Width
Working Space Dimension
Bench Width = 3 x Turning Radius
Bench Height = Heights of Vesse
4. Fleet Matching
5. Pay load distribution
6. Disposal Management
Disposal Re-shaping
