Help problem with slab duct work
I live in a 1950's house. The house is built on a slab without a basement. The Kitchen floor is brick over slab. The Duct work is under the slab and consists of terracotta pipes, that are at least a foot under the kitchen floor. I noticed At one union the pipe has settled about 2 inches, from freeze thaw I assume. This misalignment is large enough to allow the pea gravel to spill in.
I would like to avoid digging up the kitchen floor or ground outside the kitchen. Is there any way to repair the ducting.