What happens if a bored pier hole partially collapses while drilling?

If a hole shows signs of instability during drilling, an experienced contractor stops and addresses it — options include temporary casing to stabilise the hole, or in some cases adjusting the approach for that specific location.

This is a genuine, manageable situation for a properly experienced crew, not an emergency — ground conditions occasionally requiring this kind of adjustment is a normal part of drilling in variable soil.

Where your soil report indicates a genuine risk of this occurring, your contractor can plan for appropriate technique or equipment upfront, reducing how often it needs to be addressed reactively during drilling.

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