Compensation Grouting: Concept, Theory and Practice

Compensation grouting, or the use of grouting techniques to control ground settlement during soft ground tunnelling, has become a well-established technique. While compensation grouting can be applied using compaction grouting (Baker et al., 1983) or soil fracture grouting techniques, the majority of applications to date have used the soil fracture technique. This paper contrasts the concept and theory of the two techniques and describes the application of soil fracture grouting, along with a review of several case histories.