The geology and requirements of each project will be considered in detail before any proposal or design is suggested. Not only will this include the recommended type of machine, but auxiliary and support systems can also be included with the TBM offer – which may include any of the following:
Grouting equipment- two liquid or single liquid.
Ground conditioning equipment
Slurry circulation and treatment systems
Tunnel conveyor systems
Probe drilling and grouting equipment
The type of machine will depend primarily on the geology and on the specification and requirements of the project.
Closed face machines used in water bearing soft ground and mixed faces may be either.
Although there are no simple rules to select the most suitable type of machine…
Earth Pressure Balance (EPB) Machines
Generally used where the ground has more clay content and the where cover is low.