Abstract:
When unexpected occurrences happen during an excavation or tunneling process there can be catastrophic effects. Some of those effects can be significant ground loss, movement of adjacent infrastructure, loss of an excavation and risk exposure to the contractor’ s employees or the general public. This paper will cover examples of various grouting methods that have been successfully used to address the effects of unexpected occurrences. Examples include the use of compaction grouting to remediate settlement of a crane platform due to soil loss into an active excavation, the use of jet grouting to stop major groundwater flows through imperfections in a support of excavation system, the use of permeation grouting to stop major groundwater flows through imperfections in a support of excavation system and compaction grouting to mitigate sinkhole development on an interstate highway.