UTILITY TUNNELLING / PIPE JACKING
Pipe Jacking is primarily used to install diameter pipe directly into the ground. The tunnel can be excavated using a variety of methods such as hand mining or a tunnel bore machine. The pipe is propelled into the ground by jacks that are located in the drive shaft. The spoil is transported out of the jacking pipe and shaft manually or mechanically. After each pipe segment has been installed, the rams of the jacks are retracted so that another pipe segment can be placed in position for the jacking cycle begin again.
- Pipe Jacking & Utility Tunnelling can be synonymous, depending on the application.
- Both processes involve a manned tunnel excavation. Although hand tunnelling is often viewed as archaic, it is a very effective way of creating an accurate bore.
- Operators always have an exact knowledge of the tunnel face geological conditions.