Every new born need’s
• Mining is extraction ore or minerals from
ground
• There are two types of mining
1)Surface mining
2)Subsurface mining(i.e U/G mining)
What is surface mining?
• Surface mining is a method of mining used to
extract minerals and metals which are near
the surf...
• Shovel Dumper Technology.
• Dragline technology.
• In pit Crusher –conveyor-spreader
technology.
• Bucket wheel excavato...
What is Surface Miner?
 It is continuously operating mobile opencast
machine.
It cuts consolidated soils and semi-solid ...
Operations:
Surface miner operates:
 according to rock cutting technology.
 the cutting drum is provided with point atta...
Major advantages
• Direct excavation of hard material without need
for drilling and blasting.
• High productivity.
• Low c...
Case study:
• Presently being used in Koyagudem OCP II of SCCL.
• Can work safely on a gradient of 1 in 10 ,however it
is ...
What is Highwall Mining?
Highwall mining is a proven primary method
for mining coal from outcropping horizontal
seams.
I...
• When strip limits are reached by syrface
conditions
• When economic strip limits are reached.
• Transition from surface ...
Highwall Miner in operation
Requirements of Highwall Mining
• Competent coal.
• Competent immediate over burden. If OB is
not competent, coal may be l...
Safety: Web and Barrier Pillars
• Web pillars ensures support of OB.
• Barrier pillars prevents cascading collapse.
• Barr...
Key Features
 Penetration up to 300 m
 Dip +5 to -12 degrees
 Production is up to 120,000 t/ month.
 70 to 80 % of coa...
Safety Features
Elevated cab with cameras
Above ground operation
Remote operation
Anchoring system
Methane sensors
C...
High wall mining as a coal mining method:
 Increases mine-able reserves
 Mines coal cost effectively
 Maximum safety
 ...
My hell
My hell
My hell
My hell
My hell
My hell
My hell
My hell
My hell
My hell
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My hell

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  • Nice summary Vamshi, I started this innovative technology and re-introduced the highwall miners [HW300] from 1996 of. This directional [Slant Entry] Highwall Mining technique belongs to the next booming Modern Mining 'Surface to In-Seam [SIS] Techniques' as similarity with Horizontal Directional Drilling [HDD]. Two techniques are in development: SIS-Mining and SIS-Drilling, major technology behind these ideas are Directional Drilling vs. Directional Mining. Keep in touch; Cornelis (Kees) W. in' t Hout' Kees.Inthout@cadsolid-engineering.com https://cadsolid-engineering.com
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My hell

  1. 1. Every new born need’s
  2. 2. • Mining is extraction ore or minerals from ground
  3. 3. • There are two types of mining 1)Surface mining 2)Subsurface mining(i.e U/G mining)
  4. 4. What is surface mining? • Surface mining is a method of mining used to extract minerals and metals which are near the surface of the Earth. • There are three basic types of surface mining. 1) Open pit mining 2)Strip mining 3)Quarry mining
  5. 5. • Shovel Dumper Technology. • Dragline technology. • In pit Crusher –conveyor-spreader technology. • Bucket wheel excavator ( continuous mining technology) • Rock breaker technology. • Surface Miner technology
  6. 6. What is Surface Miner?  It is continuously operating mobile opencast machine. It cuts consolidated soils and semi-solid rocks with out drilling and blasting. The cut material is pre-crushed and suitable for belt conveying, loading and transporting.
  7. 7. Operations: Surface miner operates:  according to rock cutting technology.  the cutting drum is provided with point attack picks.
  8. 8. Major advantages • Direct excavation of hard material without need for drilling and blasting. • High productivity. • Low cost for multi seam mining including hard coal and overburden. • Higher recovery rate of coal. • Possibility to link the machine directly to continuous conveyor transport systems.
  9. 9. Case study: • Presently being used in Koyagudem OCP II of SCCL. • Can work safely on a gradient of 1 in 10 ,however it is only 1 in 4 gradient at KOCP II. • Annual productivity of 2000 SM is around 2.00 MT . It is different with other model of surface miners. • Larger strike length of about 600m – 1000m and widths of 300 m is suitable. • At KOCP II wind rowing is done i.e. loading the crushed coal by front and loader on to the trucks. • Grade improved from F to E by this technology
  10. 10. What is Highwall Mining? Highwall mining is a proven primary method for mining coal from outcropping horizontal seams. It is a remotely controlled mining method. In this method of mining, an unmanned continuous miner is driven underground and operated in front of the Highwall.
  11. 11. • When strip limits are reached by syrface conditions • When economic strip limits are reached. • Transition from surface mining to U/G mining. • Specific Highwall mining situations -Contour Mining -Open Cast Mining -Trench Mining -Augered Mining
  12. 12. Highwall Miner in operation
  13. 13. Requirements of Highwall Mining • Competent coal. • Competent immediate over burden. If OB is not competent, coal may be left as roof. • Coal seams dipping from -12 to +5 degrees. • Relative flat seams, no faults. • Coal seams thicker than 80cm.
  14. 14. Safety: Web and Barrier Pillars • Web pillars ensures support of OB. • Barrier pillars prevents cascading collapse. • Barrier pillar typically every 10 to 20 drives.
  15. 15. Key Features  Penetration up to 300 m  Dip +5 to -12 degrees  Production is up to 120,000 t/ month.  70 to 80 % of coal recovery  Operates with a 4/5 man crew per shift  Low establish cost  Personnel saftey  Lower production cost than underground
  16. 16. Safety Features Elevated cab with cameras Above ground operation Remote operation Anchoring system Methane sensors Continuous monitoring of methane
  17. 17. High wall mining as a coal mining method:  Increases mine-able reserves  Mines coal cost effectively  Maximum safety  With minimum risk

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