Trends in underground mining

Journal Article · Tue Nov 01 04:00:00 EST 1983 · World Min. Equip.; (United States)

OSTI ID:5034063

This article presents some of the recent equipments developments in underground mining. Recent improvements in the transmission and braking systems of electric load-haul-dumpers are increasing cycle times and lowering maintenance costs. Torque produced by electric motors increases in response to load. This results in very high stall torque and fast cycling machines. Some of the other features becoming available include: improved switch-gear and adjustable solid-state overload relays, the new motor across the line starter device has vacuum contactors, power factor correction capacitors, a DC operating coil to eliminate contact chatter at low voltage, remote radio control of LHDs in mine areas, water-cooled and air cooled engines and hydraulic braking systems. The advantages of hydraulic drifters and roof bolters are presented.

• OSTI ID: 5034063
• Journal Information: World Min. Equip.; (United States), Journal Name: World Min. Equip.; (United States) Vol. 7:11; ISSN WMEQD
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000 -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
422000* -- Engineering-- Mining & Underground Engineering-- (1980-)
CUTTER LOADERS
DIESEL ENGINES
ENGINES
EQUIPMENT
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MINING
MINING EQUIPMENT
OPERATION
PERFORMANCE
UNDERGROUND MINING