Tunnel Grouting Systems

Published: May 14, 2017 | Last updated: July 5, 2023

What Does Tunnel Grouting Systems Mean?

Tunnel grouting systems are employed to fill voids between the pipe and the surrounding geological structures at a junction or between two products such as a host pipe and a liner. The purpose of using a grouting system includes improvement of the structural integrity, prevention of exfiltration and infiltration or to aid in heat dissipation. Some grouting methods are employed before drilling takes place to stabilize the soil.

Trenchlesspedia Explains Tunnel Grouting Systems

Grout can be installed in a number of ways. Jet grouting is one of the newest methods whereby a cement mixture is applied laterally along the bore wall under high pressure. Another application method is the process of compaction grouting. In this process, the grout is injected in stages and forms several dense masses stacked on top of one another. Other grouting installation methods include consolidation, curtain and hydrofracture grouting. These can be used, depending on the particular need of a given project.

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