Abstract: Based on the site survey and practically measurement results of the wall rock deformation and failure of the roadway in Maluping Mine, the causes for the floor heave formation in the rheological weak rock roadway were analyzed and found to be the strong expansibility of mauve shale and water penetration, which were more evident with the increase of the mining depth. Through the numerical simulation calculation, the scope of the roadway wall rock fracture zone and plastic zone, and the stress displacement distribution were analyzed. Technical measures and support scheme were proposed for controlling the roadway floor heave. The industrial test results show that the implementation of this scheme has effectively control the floor heave.

Key words: Rheology, Weak rock roadway, Causes for floor heave, Control measure