Research on deformation mechanism and control of mine jointed different strata roadway

Base on the geological conditions of a-600m railway roadway in Gedian Mine of Shenhou Group,the paper analyzed the stress distribution and deformation features of the mine roadway surrounding rocks under different jointed conditions with UDEC4.0 simulation.The paper studied the deformation and stress differences occurred by the different rock properties at the different rock strata joints.The paper analyzed the swelling deformation causes of the rocks in the mine jointed soft rock roadway.The deformation differential causes at the rock joints ware obtained.Base on the above,a control research on high strength and ultra high strength bolt steel mesh,anchor and shotcrete as well as a bolt grouting secondary support ware conducted.The bolt grouting secondary support control plan was determined.The site applications showed that the research conclusion was correct with good technical and economic results.