A water-collection ring built into the lining of a vertical mine shaft. It intercepts groundwater seeping from the surrounding rock before it can fall down the shaft, directing the flow into pipes that carry it to a sump for pumping. This keeps the shaft bottom dry and protects the hoisting equipment from constant water damage.
Heard on the job
We need to clean out the upper garland; it's choked with silt and water is cascading down onto the cage.
Also heard as
- water ring
- garland curb