In the mining and processing of coal, ores of ferrous and non-ferrous metals, construction raw materials and other minerals, huge volumes of natural, materials are subjected to destruction to bulk.
The problem of wedge penetration into a deformable obstacle has been solved by many researchers in relation to the work of drilling machines, string plants, mining combines and other similar equipment, i.e. for conditions when the wedge at its tip experiences more resistance when penetrating into the rock to be destroyed.
One of the urgent problems affecting the efficiency of mining production is the preparation of rock mass for loading. This problem includes not only works on crushing of rocks by mass blasting, but also destruction of oversized pieces.
Annual economic effect from the introduction of mechanization in mining operations is usually determined by the all-union methodology as the difference of the reduced costs of production of the same volume of production A at the existing (basic) 31 and new 32 technique ...
