Working shaft construction methods can be used for pipe jacking operations including:
- Circular caissons jacking pits
- Aluminium formworks
- Sheet Piling
- Segmental Lining
In some situation, ground treatment or underground water dismantling may be needed to enable the construction of shaft to proceed. These include:
- Well pointing and deep wells
- Compressed air
- Suspension grouts
- Chemical stabilization
- Ground freezing