Mining Engineering > GATE 2018 > Mining Methods
In a sublevel stope, 20 m high excavation is made with ring drilling in a 6 m wide orebody. In an effective shift time of 6 hrs, three rings are blasted resulting in 9 m extraction length. LHDs of 5.0 m3 bucket capacity and cycle time of 5 minutes are used for ore transportation. The number of LHDs required for this operation is __________.
Correct : 3.0
Similar Questions
Match the method of mining with orebody geometry, orebody strength and type of supports.
A longitudinal section of a mined out stope block in a copper mine is shown by the shaded portion. For a uniform thickness of the stope block, the percentage of...
A tabular, near-flat (dip
Total Unique Visitors
Loading......