ROCK PRESSURE CHANGES ALONG THE LENGTH OF LONGWALL
The paper describes changes in rock pressure along the length of coal face and its results in the forms of соal sloughing and changes of the working coal seam resistance to cutting. Determined undulating changes of rock pressure along the length of longwall are confirmed by liquid pressure indication in hydraulic legs of powered roof supports and changes of volume of sloughed соal from the face. Mentioned specific changes in rock pressure should be considered during the planning of shearer output and per face output in different mining and geological conditions in order to plan accurate productivity of both coal seam extraction and working area.
The work is done with the financial support of The Russian Foundation for Basic Research, project № 18-45-420001 р_а.
Keywords: ROCK PRESSURE, COAL SEAM MINING, POWERED ROOF SUPPORT, SHEARER OUTPUT.
Авторы: M.V. Shinkevich
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