ABSTRACT
According to the calculated stress values in front of the face, maximum stress concentration was 10,65 MPa, and virgin stress condition with the value of 2,75 MPa existed 10 m ahead of face in the solid. Up to 1,5 m ahead of the face, the sandstone seam which is located in the roof between the two layers of coal, will be crushed, therefore the maximum bearing stress was at 1,5 m in front of the face with value of about 8 MPa. The calculated required support resistance of the frame type support is F=1,37 MPa, whereas for shield support, depending on the shield type, it amounted to 1,5-3,0 MPa on the floor and 1, 5-2, 5 MPa on the roof.
