How Mine height plays a role in roof fall study ? can anyone help me in providing stuff or supporting documents related mine height in coal mines in bord and pillar method.
With increase in height the pillars become less stiff and more flexible to spalling or breakage. This, in turn, increases the chances of roof failure and falls.
It is obvious that the height of the pillars will bring the thicker size of it together causing the larger amount of the mineral loss. Additionally, with keeping the size of the pillar smaller in thickness, it will be the more prone for roof falling.
It is obvious that the height of the pillars will bring the thicker size of it together causing the larger amount of the mineral loss. Additionally, with keeping the size of the pillar smaller in thickness, it will be the more prone for roof falling.
Mine height is inversely proportional to pillar strength and to study the effect of W/h ratio of pillars is necessary in roof fall study in Bord and pillar mining method
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