Henderson Mine Site
16
Henderson Mine Site
description
Henderson Mine Site. Henderson Mine. Shaft Collar Elev 10,400 ft. Harrison Mt. Elev. 12,300 ft. Shaft Bottom Elev 7,500 ft. LA Ramp. Exhaust air. Fresh air. To crusher. Primary Access Ramp 3600 ft. Secondary Access Ramp 3200 ft. Central Campus Elev. 6,750 ft (4200 mwe). - PowerPoint PPT Presentation
Transcript of Henderson Mine Site
Henderson Mine Site
Henderson Mine
Central Campus
Shaft CollarElev 10,400 ft
Shaft BottomElev 7,500 ft
LA Ramp
Primary Access Ramp3600 ft
Central CampusElev. 6,750 ft(4200 mwe)
Secondary Access Ramp3200 ft
Fresh air Exhaust air
To crusher
Harrison Mt.Elev. 12,300 ft
UNO
Central CampusElev. 6750 ft(4200 mwe)
Midway CampusElev. 5825 ft(5100 mwe)
Lower CampusElev. 4900 ft(6000 mwe)
EarthLab/GeoscienceArea
Deep Access
Internal Shaft
Preliminary Cost Estimates(Excluding UNO)
Preliminary Time Schedule(Excluding UNO)
UNO Preliminary Cost Estimates
Equipment and Excavation Techniques
2.3.1 Conventional Development
Basic drilling cycle for drill and blast drifting and tunneling:
•Surveying and setup•Drilling•Charging•Blasting•Ventilation•Scaling•Mucking•Scaling•Bolting
3 Boom Drill Jumbo
LHD
Development Haul Truck
Raise Drill Operating Cycle
Sandvik TamrockRock World, 2/2001
Drilling the ventilation raises at the Kiruna Mine, 1998
Shaft Widening by Drill and Blast
Shaft Boring Machine (Wirth)
V-mole method
Raise bored pilot hole 1.8 to 2.4 m diameter.
Ream shaft to up to 8.5 m diameter.
Limited by maximum length raise bored hole, currently 1,300 m.
7.5 m day average
