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Bord and Pillar
development/depillaring with
LHD/SDL
LOAD HAUL DUMPER
Applicability Condition
• Seam Thickness : more than 1.8m
• Average seam Gradient : up to 1 in 7
• Suitable for weak floor...
• Headings of 4.8 m width is driven
• In a gallery auger holes are drilled in the middle
of the face upto 2m depth and sho...
Load Haul Dumper
Model : EIMCO ELECON 811 LHD
Bucket capacity : 1.37 tons
Electric Motor : 37.5 KW 550 V
Height : 1.95-2 m...
Model EIMCO ELECON 912E
• Bucket Capacity : 2.7 tons
• Electric Motor : 440 V 64.15 KW
• Height : 2.11 – 2.78 m
• Length :...
Caterpillar 243-5577 186-9278 243-6143 243-6224 157-3622
Bucket
capacity(m3)
2.4 2.8 3.1 3.4 2.4
Bucket width
over cutting...
SIDE DISCHARGE LOADER
SDL SPECIFICATION
MODEL BUCKET
CAPACITY
OPERATING
WEIGHT
ELECTRIC
MOTOR
GROUNG
PRESSURE
TRAVELLING
SPEED
EIMCO
ELECON 625
...
HAZEMAG TL 600 TL 800 TL 1200 TL 1500
Gross Loading
capacity (m3/h)
40-55 50-80 60-100 80-130
Weight of
machine
8.6 10.5 1...
Radiant hydraulic face drilling machine
• Model : RMTL-HFD-1800 Jumbo drill
• Operating pressure : 70 to 100 bar
• Rotatio...
Atlas Copco face drill
Sandvick
Chain Conveyor
MODEL Motor Power
(KW)
Capacity (tph)
Peak Avg
Width (mm) Speed( m/s)
LDCC Skat-60 2 X 15 90 60 420 0.87
LD...
Belt Conveyor
Depillaring with LHD
• Average seam thickness : 4.5 m
• Gradient : 1 in 7 to 1 in 8
• Higher productivity
• Minimum labour...
Support system
Production of different jumbo drills
• Width of heading(w) = 4.8 m
• Height of gallery(h) = 3 m
• No of faces (N) = 9
• No...
Model No Hole depth (m) Production per blast (t)
BMH2831 2.795 507.12
BMH2837 3.405 617.8
BMH 2843 4.015 728.5
BMH 2849 4....
LHD
• Average lead dis of LHD (d) = 60 m
• Average speed of LHD (v) = 6 KMPH
• Bucket capacity = b
• Bucket fill factor(F)...
For no. of LHD,
No. of LHD = (Total production/no. of hrs per
shift * no of shift * hourly production of LHD)
= 728 / 3 *3...
Model No Bucket capacity (m3) No of LHD required
CT243-5577 2.4 3
CT186-9278 2.8 3
CT243-6143 3.1 2
CT243-6224 3.4 2
CT157...
Production of different chain
conveyors
Model No Capacity (tph)
Peak Average
Capacity in tpd
Peak average
MDCC PF-I-500 25...
Production of belt conveyor
Sandvik Belt
speed(m/
s)
Power
required(
KW)
Belt
width(mm
)
Idler
angle(deg
ree)
Capacity(t
p...
ENDLESS ROPE HAULAGE
• Avg Speed of Endless haulage = 5KMPH
• Amount of coal to be handled = a
• Length of the roadway on ...
Amount of coal to be handled per hour No of tubs
Loaded Empties
200 32 32
220 36 36
250 40 40
DRH
• Avg Speed of Direct rope haulage = 10KMPH
• Amount of coal to be handled = a
• Length of the roadway on which ERH op...
Amount of coal to be handled per hour No of tubs
200 10
220 11
250 13
Power Supply Distribution
Equipment Load in KW
MAIN VENTILATION FAN 75
Belt conveyor 180
Direct Haulage 90
Endless haulage...
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
Bord and pillar working with LHD/SDL
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Bord and pillar working with LHD/SDL

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Equipment selection for bord and pillar mining

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Bord and pillar working with LHD/SDL

  1. 1. Bord and Pillar development/depillaring with LHD/SDL
  2. 2. LOAD HAUL DUMPER
  3. 3. Applicability Condition • Seam Thickness : more than 1.8m • Average seam Gradient : up to 1 in 7 • Suitable for weak floor as compared to SDL • Maximum speed 8-12 KMPH • Suitable for long distance
  4. 4. • Headings of 4.8 m width is driven • In a gallery auger holes are drilled in the middle of the face upto 2m depth and shot holes are drilled upto 1.8m depth. • P1 type permitted explosive with instantaneous type electric copper detonator is used. • Coal is loaded by LHD on to chain conveyor which in turn transfer coal to the belt conveyor.
  5. 5. Load Haul Dumper Model : EIMCO ELECON 811 LHD Bucket capacity : 1.37 tons Electric Motor : 37.5 KW 550 V Height : 1.95-2 m Length : 6.30 m Width : 1.5 m Speed : 1st gear 3.8 KMPH 2ND gear 7.2 KMPH 3rd gear 12.2 KMPH
  6. 6. Model EIMCO ELECON 912E • Bucket Capacity : 2.7 tons • Electric Motor : 440 V 64.15 KW • Height : 2.11 – 2.78 m • Length : 7.55m • Payload : 4000 kg • Cable reel : 120 m
  7. 7. Caterpillar 243-5577 186-9278 243-6143 243-6224 157-3622 Bucket capacity(m3) 2.4 2.8 3.1 3.4 2.4 Bucket width over cutting edge (m) 1.950 2.010 2.200 2.400 2.200 Overall height- bucket raised(m) 4.23 4.30 4.30 4.30 4.30 Max dump height(m) 3.548 3.529 3.531 3.529 3.577 Dump clearance at max lift (m) 1.662 1.558 1.560 1.561 1.561 Digging depth (mm) 26 36 34 36 36 Dump angle at max lift(degree) 43 43 43 43 43 Reach (m ) 1.476 1.588 1.583 1.584 1.584 Overall width(m) 2.155 2.185 2.318 2.518 2.318
  8. 8. SIDE DISCHARGE LOADER
  9. 9. SDL SPECIFICATION MODEL BUCKET CAPACITY OPERATING WEIGHT ELECTRIC MOTOR GROUNG PRESSURE TRAVELLING SPEED EIMCO ELECON 625 2.032 tons 8.9 tons 48.5 KW 0.94 Kg/cm2 3.0 kmph M412 1.35 tons 8.5-9 tons 55 KW 0.9 kg/cm2 2.6 kmph EIMCO ELECON 611 0.9 tons 9 tons 48 KW 0.96 kg/cm2 3.0 kmph
  10. 10. HAZEMAG TL 600 TL 800 TL 1200 TL 1500 Gross Loading capacity (m3/h) 40-55 50-80 60-100 80-130 Weight of machine 8.6 10.5 15.0 14.5 Bucket capacity 0.6 0.8-1.0 1.2 1.5 Travelling speed(m/s) 1.2 1.2 1.4 1.4 Discharge height(m) 1.7 2.6 2.45 2.4 Digging depth(mm) 350 600 500 650 Drive capacity 55-63 55-63 63-90 63-90 Length of machine 5.8 6.18 6.9 6.6 Width 1.2 1.32 1.4 1.7 Height (without canopy) 1.3 1.5 1.8 1.7 Ground pressure(N/cm2) 10.4 7.8 10.0 10.0
  11. 11. Radiant hydraulic face drilling machine • Model : RMTL-HFD-1800 Jumbo drill • Operating pressure : 70 to 100 bar • Rotational speed : 400 to 600 rpm • Drilling diameter : 27 to 43 mm • Medium : DGMS recommended hydraulic oil • Noise level : below 70 dB • Approx weight : 12 to 14 kg
  12. 12. Atlas Copco face drill
  13. 13. Sandvick
  14. 14. Chain Conveyor MODEL Motor Power (KW) Capacity (tph) Peak Avg Width (mm) Speed( m/s) LDCC Skat-60 2 X 15 90 60 420 0.87 LDCC PF-00 2 X 30 90 60 426 0.87 MDCC PF-I-500 1 X 45 2 X 30 250 200 632-640 0.65 MDCC PF-Iv- 500 1 X 45 2 X 30 300 220 632-640 0.65 MDCC MIV - 500 1 X 45 2 X 30 350 250 632-640 0.65
  15. 15. Belt Conveyor
  16. 16. Depillaring with LHD • Average seam thickness : 4.5 m • Gradient : 1 in 7 to 1 in 8 • Higher productivity • Minimum labour requirement • Limited roadway dimension
  17. 17. Support system
  18. 18. Production of different jumbo drills • Width of heading(w) = 4.8 m • Height of gallery(h) = 3 m • No of faces (N) = 9 • No of blast per face per shift = 1 • Specific gravity of coal(Sg) = 1.4 Production per blast = w*h*Hd*Sg *N Where Hd= Hole depth in m
  19. 19. Model No Hole depth (m) Production per blast (t) BMH2831 2.795 507.12 BMH2837 3.405 617.8 BMH 2843 4.015 728.5 BMH 2849 4.625 834.6
  20. 20. LHD • Average lead dis of LHD (d) = 60 m • Average speed of LHD (v) = 6 KMPH • Bucket capacity = b • Bucket fill factor(F) = 0.8 • Loose coal density(D) = 0.9 • Amount of coal loaded per trip = b*F*D = 0.72b • Cycle Time of LHD = 1+1+1.5 = 3.5 min • Hourly no of trips = 17 • Hourly production of LHD = Hourly no of trips * 0.72b = 12.24 b
  21. 21. For no. of LHD, No. of LHD = (Total production/no. of hrs per shift * no of shift * hourly production of LHD) = 728 / 3 *3*12.24b = 6.67/b
  22. 22. Model No Bucket capacity (m3) No of LHD required CT243-5577 2.4 3 CT186-9278 2.8 3 CT243-6143 3.1 2 CT243-6224 3.4 2 CT157-3662 2.4 3 Eimco Elecon 811 1.52 5 Eimco Elecon 911 3 3
  23. 23. Production of different chain conveyors Model No Capacity (tph) Peak Average Capacity in tpd Peak average MDCC PF-I-500 250 200 2250 1800 MDCC PF-Iv-500 300 220 2700 1980 MDCC MIV -500 350 250 3150 2250
  24. 24. Production of belt conveyor Sandvik Belt speed(m/ s) Power required( KW) Belt width(mm ) Idler angle(deg ree) Capacity(t ph) Productio n (tpd) HC 500 1.25 3-7.5 800 25 100 900 HC 650 1.37 3-15 950 30 250 2250 HC 800 1.42 5.5-30 1150 30 400 3600 HC 1000 1.65 5.5-60 1350 30 700 6300 HC 1200 1.80 7.5-90 1600 30 1000 9000 HC 1400 1.25 15-90 1800 30 1300 11700 HC 1600 1.25 22-110 1900 30 1500 22500
  25. 25. ENDLESS ROPE HAULAGE • Avg Speed of Endless haulage = 5KMPH • Amount of coal to be handled = a • Length of the roadway on which ERH operates = 800 m • Capacity of coal tub = 1 ton • No of tubs = 800 * Amount of coal to be handled per hour(a)/(Distance travelled by ERH per hour * capacity of coal tub)
  26. 26. Amount of coal to be handled per hour No of tubs Loaded Empties 200 32 32 220 36 36 250 40 40
  27. 27. DRH • Avg Speed of Direct rope haulage = 10KMPH • Amount of coal to be handled = a • Length of the roadway on which ERH operates = 500 m • Capacity of coal tub = 1 ton • No of tubs = 500 * Amount of coal to be handled per hour(a)/(Distance travelled by DRH per hour * Capacity of coal tub )
  28. 28. Amount of coal to be handled per hour No of tubs 200 10 220 11 250 13
  29. 29. Power Supply Distribution Equipment Load in KW MAIN VENTILATION FAN 75 Belt conveyor 180 Direct Haulage 90 Endless haulage 111 Load Haul Dumper 37 Roof bolting machine 75 Auxiliary fan 15 Face pump 7.5 Chain conveyor 2 x 45

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