Prognozowanie obciążenia obudowy zmechanizowanej w ścianie strugowej

W pracy przedstawiono wyniki analizy wpływu postępu ścian na obciążenie sekcji obudowy zmechanizowanej, mającej na celu wyznaczenie równań opisujących ciśnienie w stojakach w funkcji postępu ściany. Analizę przeprowadzono dla warunków pól ścianowych zlokalizowanych w Zagłębiach Donieckim i Lubelskim.

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One of the mining systems used in Polish and Ukrainian hard coal mines includes a longwall system with plough longwall complexes. These complexes incorporate automation systems that make it possible to monitor and record operating parameters. The paper uses recorded pressure values of hydraulic legs of powered roof support sections, geomechanic parameters of rock mass, and the longwall advance speed in order to forecast the load of sections. Measurement data were obtained from complexes operating in the Lublin and Donets Coal Basin. To carry out statistical analyses, data grouping and multiple regression were used. The statistical analyses made it possible to determine the significance of individual model parameters and to make predictions of the expected section load. Even though various statistical analyses were used, the load values obtained correspond to actual loads. Further research on the use of operating parameters of longwall systems – in particular values of hydraulic leg pressure of powered roof support sections – may contribute to the increase in efficiency and safety. It may be conducted by drawing on previous experiences and obtaining new ones in terms of the selection of supports for geological and mining conditions.