Analysis on water disaster control technology of broken surrounding rock in south return airway of Sangshuping Coal Mine
The south return airway of Sangshuping Coal Mine is affected by the B1 anticline in the 490-512 m section of the roadway,resulting in the fragmentation of the surrounding rock and a maximum amount of water spray of 15 m3/h on the roof and sides.The de-formation of the roadway is severe,posing a serious threat to the normal use of the south return airway.Through grouting reinforcement,the amount of water spray into the roadway in this section was reduced to 0.2 m3/h,and the roadway was almost stable,indicating that grouting reinforcement of the surrounding rock fracture zone of the roadway and sealing of the water-conducting fracture had obvious effects,pointing out the direction for the prevention and control of water in the roadway through the fracture zone area.
anticlinefracture zonegrouting reinforcementwater control
万方数据
维普
