NA-21 - Utility Tunnelling: Jacking Pipes

Jacking pipes have a dual function: they provide permanent support for the excavated cavity and, in the case of single-shell lining, for the pipeline structure.

The subject of this module is jacking pipes made of cement-bound materials, vitrified clay, glass-fibre reinforced plastics, polymer concrete and plastics.

After completing this module, you will have a sound knowledge of:

• variants of the constructive design of jacking pipes;
• tasks of jacking pipes;
• installation methods depending on the material;
• variants of pipe connections;
• functional and dimensional requirements of pipe connections;
• function and requirements of the pressure transmission ring.