Theories of Rock Bolting 0 Comment

For highly fractured and blocky roof strata, the application of rockbolts can essentially improve the frictional resistance along rock joints, cracks and weak planes as shown in Figure opposite. The installation of rockbolts can prevent or minimize the slippage and separation of rock discontinuities. Bolt tension plays a vital role in the keying effect. The fractured rock mass is locked or keyed together.