Abstract: When the large mining high working face crosses the empty lane, due to the sudden increase of the empty top distance, the mine pressure is obvious, the resistance of the working support of the working face increases sharply, and the basic top pole is easy to break and collapse, resulting in the pressure frame and falling frame, which seriously affects the normal production of the working face. With good fluidity, high solidification strength of pearl rice, filling material will fill the lane, all the space in the lane, filling in the case of three axial stress physical characteristics of compression, the filling and surrounding rock under working face mining support pressure, control the lane surrounding rock deformation, filling for reinforcing lane space, able to consolidate and support the surrounding rock, to avoid production accidents such as pushing empty recovery bracket. At the same time, the filling body formed by Permiite filling material can be successfully cut through by the shearer, which is very beneficial to the rapid passage through the empty lane, and can make the working face quickly and safely pass through the empty lane.