3. Loading by Slusher Bucket size : from 0,22 to 0,8 m 3 Optimal tramming distance : 20 - 50 m Yield : 30 - 100 t/shift
4. Mucking by Slusher Bucket size : from 0,22 to 0,8 m 3 Optimal tramming distance : 20 - 50 m Yield : 30 - 100 t/shift
5. Mucking and loading by overhead loader Bucket size : from 0,125 to 1 m 3 Container size : 1 to 5 m 3 Optimal tramming distance : 5 - 20 m Technical Yield : 20 - 60 t/hour
6. Mucking and loading by vibrating feeder Technical Yield : 20 - 60 t/hour Minimal ore reserve : 100 000 t
7. Haulage by track Capacity : from 6 to 60 t ; Tramming distance : 500 à 1000 m
16. Cost of loading where : C load - operating cost of loading in $ per tonne of rock ; C hour - hourly operating cost of the equipment in $ per hour ; P average - average production rate of the equipment in tonnes per hour.
17. Production rate of loading where : Q - bucket size, m 3 ; - ore density, t/ m 3 ; f fill - bucket filling factor ; f swelling =1.1 to 1.5 - swelling factor ; D - one way tramming distance in meters ; v - average speed over the cycle in kilometers per hour ; t fix - fixed cycle time (load, damp, maneuver) in minutes ; j = 50 min - operating minutes per hour to account for delays in minutes;
18. Production rate of loading LHD : 0,5 to 8,4 m 3 Q - bucket size Slusher : 0,22 to 0,8 m 3 Overhead loader (CAVO) : bucket 0,125 to 1 m 3 container 1 to 5 m 3
19. f fill - bucket filling factor Coarse blocs : f fill = 0,8 - 1,1 Moist material : f fill = 0,55 - 0,7 Fine material < 50 mm : f fill = 0,55 - 0,75 LHD Slusher Gros blocs de minerai : f fill = 0,5 - 0,7 Minerai fine < 50 mm : f fill = 0,8 - 1 Production rate of loading
20. v - average speed over the cycle Favorable conditions : v = 9 à 16 km/h Average conditions : v = 8 à 12 km/h Unfavorable conditions : v = 5 à 8 km/h Diesel-driven LHD Slusher v = 4.5 to 5.5 km/h Favorable conditions : v = 9.5 km/h Average conditions : v = 6.5 km/h Unfavorable conditions : v = 3.2 km/h Electric-driven LHD Production rate of loading
21. t fix - fixed cycle time (loading, dumping, maneuver) Favorable conditions : t fix = 0.8 min Average conditions : t fix = 1.1 min Unfavorable conditions : t fix = 1.4 min LHD Slusher t fix = 0.5 min Production rate of loading
22. Distance variable D max D min Distance Production D min D max R = f(D)
23. Average production rate of loading where : Q - bucket size, m 3 ; - ore density, t/ m 3 ; f fill - bucket filling factor ; f swelling = 1.1 to 1.5 - rock swelling factor ; D min - minimum one way tramming distance in meters ; D max - maximum one way tramming distance in meters ; v - average speed over the cycle in kilometers per hour ; t fix - fixed cycle time (load, damp, maneuver) in minutes ; j = 50 min - operating minutes per hour to account for delays in minutes;
En bas à gauche ROCK WORLD, 1/2001 Sansvik Tamrock customer magazine, p.27. Alp Transit tunnel construction in Bodio, Switzerland. Loader Sansvik Tamrock : Broyt ED 600T Compact 3,4 m3 bucket Electric-Diesel (ED) Powerpack The Truck : Type A : 32 - ton rigid body (Ferrari DM 3227), 16 m3(struck)/22 m3 (heaped) Type B : 25 - ton artuculated (Bell 25), 13 m3(struck)/18 m3 (heaped) A truck five full buckets - 112 seconds, B truck - 80 seconds, Tunnel 50 m² : 6.75 at floor level and 7.8 width at a level of 2.5 m from the floor.
