Study on mining technology of 52305 fully mechanized mining face in Buertai Coal Mine

The 52305 fully mechanized mining face is a right working face with a length of 322.15 m, a advancing length of 2 076.67 m, a design mining height of 3.1 m, and a coal seam thickness of 2.5-3.5 m. The surface of 52305 working face is in a loess gully area, with a surface elevation of 1 216-1 334 m and a maximum elevation difference of 118 m. There are 43204 and 43205 fully mechanized goafs of 43 coal seam in the upper part of the mining face, with a layer spacing of 58-63 m. A detailed introduction is given to the initial pressure and periodic pressure of the working face, as well as the pressure situation under special geological conditions, which has guiding significance for the future recovery of similar fully mechanized working faces.