Vertical and dip workings in under level mining. (Case " a, b " )  

Vertical and dip workings in under level mining. (Case " a, b " )  

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The question of mining under the main haulage level as a way by which in some cases coal reserves can be effectively extracted is still discussed. The paper introduces advantages and disadvantages of this method. It presents examples of the bedding of a seam in a limited depth under level, for example 50 m, when the opening by the under level minin...

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Context 1
... developing according to "d" when the incline has the dip of 13° to 15° a conveyor belt could be used. As a transport means on inclines (Fig. 6) according to "a" or "b" with a dip of 19° to 21° a plate conveyor should be ...
Context 2
... inclines "b" (Fig. 6), or "c" are led out over the mining level -700 m and leads into the bin over the filling ...

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