Mining Engineering > GATE 2018 > Underground Coal Mining
An SDL of 1.0 tonne capacity operates with a cycle time of 6 minutes. The dimension of the face is 4 1 m×3 m. Five blasts are conducted per shift with an average pull of 1.2 m. If the density of blasted coal is 0.8 tonne/m3, the time required by the SDL in the shift to lift all the prepared coal in hours is __________.

Correct : 5.6

Similar Questions

A Bord and Pillar panel is developed at a depth of 250 m in a flat coal seam. The vertical stress gradient is 0.027 MPa/m. If the strength of a square pillar is...
#43 Fill in the Blanks
For a continuous miner (CM) panel, the following data are given. Data related to CM A Table: Assume, unit weight of coal is 1.4 tonne/m3 and its swell facto...
#54 Fill in the Blanks
'Critical subsidence has occurred on the surface due to mining of a flat longwall panel at a depth of 200 m. The width of the panel is 150 m. The maximum width...
#87 Fill in the Blanks

Related Topics

GATE Mining Engineering 2018 GATE Mining 2018 Q53 side discharge loader cycle time SDL capacity calculation blasted coal calculation underground mining machinery coal lifting time calculation

Unique Visitor Count

Total Unique Visitors

Loading......