Tunnel boring machines are used to excavate tunnels through a variety of different geologies. They can be used to bore through hard rock or sand or almost anything in between.
Many underground utility lines have become old and require replacement. A substantial amount of the underground lines have been in place for decades.
Horizontal auger boring is a steerable, trenchless method which uses a surface rig to install a variety of pipes ,conduits and cables underground.
This method of installation is achieved by hammering a steel pipe through the ground. After the hammer shot is successfully completed the spoil is removed entirely.
Pipe Jacking is primarily used to install large diameter concrete pipe directly into the ground. The tunnel can be excavated using a variety of methods such as hand mining or a tunnel boring machine.