Abstract: The support effect of haulage roadway directly affect safe and normal advance of the working face. This pater make the first mining face in Yanjing No. 1 Coal Mine as the research basis, field monitoring the deformation of roadway and the roof abscission layer of the haulage roadway, and analysis the monitoring data. At the same time, according to the problems that found at the field, we make some changes in the original roof abscission layer instrument.

Key words: deformation of roadway, field monitoring, roof abscission layer, roof abscission layer instrument