Design and mechanical characteristics research of rock burst prevention combined components of the double laminated springs

In order to solve the engineering problem that bolt tail is often broken under impact of rock pressure, mining stress and damage support structure contribute great hidden danger safety tunneling. A new anti-impact designed can absorb energy pressure. The double laminated springs inner spring deform load achieve purpose absorbing most energy. composition working principle energy-absorbing introduced. static axial compression tests single with cone angles 30°, 45°, 60° are carried out. mechanical characteristics in three stages absorption investigated. It found 45° has best effect. simulation method was used analyze optimize effect anti-scour composite components. Double anti-shock components avoid structure, which reduces roadway cost important application value for ensuring deep tunneling mining.