Issues of improving the system of development of powerful steeply dipping seams by long columns along the strike without division into layers
Abstract
In the coal mining industry, the development of thick seams presents the greatest difficulties. In the matter of improving the methods of developing thick steeply dipping seams, the most promising direction should be considered the improvement of known and the creation of new systems that provide for the development of the seam without dividing it into layers with maximum use of natural conditions: high seam thickness, steep dip, etc. Systems for developing thick steeply dipping seams without dividing them into layers, in turn, can be divided into three groups: 1) systems that provide for the development of the seam with chambers (systems of engineers I. N. Koznin, G. A. Lomov, and others); 2) systems that provide for the development of the seam in strips along the dip or rise (the system of Professor Chinakal, the VUGI system); 3) systems that provide for the development of the seam with long columns along the strike (the system of engineer P. I. Kokorin, and others). The proposed article is devoted to the third group of systems that provide for the development of thick steeply dipping strata with long columns along the strike without division into layers. These systems are distinguished by their greatest simplicity, versatility and high efficiency.
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