Abstract
This chapter aims to provide the knowledge of rock bolts and cable bolts. Rock bolts are either nonstressed or prestressed. Nonstressed anchors are also known as rock dowels. Cable bolts are a group of wires used to create a cable. Cable bolts are used for high capacity applications. The most popular mechanical anchor system is expansion shell anchors. A typical installation procedure for mechanical anchors is illustrated. The main reason for rock bolt failure is corrosion. The corrosion of rock bolts can be avoided by grouting the hole. Grouting may not be necessary for temporary rock bolts. Both standard and hollow rock bolts are anchored to the rock using a cone and wedge mechanism. Hollow rock bolts were designed to make the grouting process more reliable. Rock dowels are called into action when there is a movement in the rock. The simplest form of rock dowel is a grouted steel bar inserted into the rock. Finally, this chapter explores the load in the nonstressed anchor and prestressed anchor.
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