Abstract
In order to study the deformation characteristics of the overlying rock layer of the floor roadway, the DW-6 multi-point displacement meter is used to measure the displacement of the surrounding rock of the roadway at different depths, and it is concluded that the displacement and deformation of the surrounding rock within 15m of the upper and lower sides of the pressure relief floor rock roadway. The upper part shows the largest deformation of the surrounding rock directly above, followed by the upper and lower sides 7.5m, and the upper and lower sides the smallest 15m. The different base points of the same borehole show the characteristics of alternating wave crests and troughs from the outside to the inside. The wave crests with larger displacements are the damaged areas of surrounding rock, and the troughs with smaller displacements are the non-damaged areas of surrounding rock.
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