ABSTRACT

Rock reinforcement with different types of rock bolts can be calculated with analytical solutions based on the theories of the ground reaction curve. Analytical solutions of the behaviour of the rock support with fully grouted bolts (dowel) are presented as well as with prestressed anchor bolts. Elastic as well as plastic behaviour of the bolts and the rock mass can be considered. The failure state of the rock mass can be brittle or perfect plastic. Based on two calculated examples the difference between prestressed anchor and grouted bolt in squeezing rock are discussed.