ABSTRACT
The mining and geological situation of the mine working maintenance, which changes along its length, requires a preliminary assessment of the bottom stability and identification of areas that are problematic from this point of view. Here, in addition to the traditional bottom ripping, the preliminary planning is possible with the subsequent implementation of measures to increase the bottom stability, including during the period of mine working operation. Based on the mining and geological prediction, the mine working is divided into sections with essentially different conditions of its maintenance: a change in the structure of rocks of the main and immediate bottom, and variation in the strength characteristics of adjacent rock layers. For each selected area, the initial data on the parameters are compiled: the thickness of the layer, the resistance to compression of its rock, the degree of water-cut, and the intensity of fracturing.
