A method for maintaining, in a controlled manner, a top 
canopy / 
coal-face distance expedient for 
rock mechanics, in 
longwall mining operations in underground 
coal mining, using a face conveyor, at least one extraction 
machine, and a hydraulic shield support frame. Inclination sensors are disposed on at least three of the four main components of the shield support frame, including floor skid, gob shield, support connection rods and gob-side area of the top 
canopy. An inclination of the top 
canopy and floor skid are ascertained via the sensors. From the ascertained inclination data, in a computer, the effects on a top canopy / 
coal face distance are determined when changes in an 
angle of inclination of the top canopy occur. An automatic adjustment of decisive cycle parameters of the shield support frame are carried out, wherein the 
work cycle comprises retraction, advancement and setting processes.