Mining Engineering > GATE 2018 > Underground Coal Mining
The correct figure depicting the extraction of contiguous seams in bord and pillar working is indicated by
A
B
C
D
Correct : c
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...
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...
'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...
Total Unique Visitors
Loading......