ABSTRACT
This chapter briefly outlines the typical construction methods and plant used to build SCL tunnels. Further details about tunnelling can be found in established texts (e.g. BTS 2004, Hoek and Brown 1980). Typical support measures are also described. The excavation sequence is as important in supporting the ground as the sprayed concrete lining or any other additional measures. Hence as a precursor to designing the sprayed concrete lining we must first understand how the sprayed concrete functions as part of the support for the tunnel.
