MINING CONCEPTS

FACTOR:
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