FeTremieTM
FeTremieTM
A conduit arrangement for placing dry barrier-forming material into boreholes.
The concept
The system describes source and delivery conduits that reduce the material flow velocity near the bottom of spaced boreholes, for forming a permeable reactive barrier.
This is a concise concept summary. Review the original Footprint Engineering page for technical information, drawings and current terms.
Technical drawings & references
4 itemsA source conduit feeds dry barrier-forming material into delivery conduits at spaced boreholes. Side openings vent entrained air and the arrangement slows material flow near the outlets for forming a permeable reactive barrier.
A delivery conduit arrangement is in fluid communication with the source conduit and includes a first delivery conduit and a second delivery conduit. The first and second delivery conduits each have an outlet end for being positioned proximate a bottom of respective spaced-apart boreholes in the ground. The first and second delivery conduits each have one or more openings defined in respective sidewalls thereof proximate the outlet ends thereof, for venting air that is entrained in the flow of the material.
A total cross-sectional area of a flow path increases between the source conduit and the outlet ends of the first and second delivery conduits. During operation a final flow velocity of the barrier-forming material is at least about 30% less than the initial flow velocity.
