Pumping Station Rehabilitation

Sewage pumping stations by their vary nature are typically constructed deep below the surface. They therefore experience some of the highest external water pressure of all the infrastructure components. DMR, cleans, inspects and stops water infiltration in pumping stations. One of the most common failure areas is the connection of the incoming sewer pipe and pumping station wall.
A hole is drilled through the chamber wall and chemical grout is pumped under pressure into the area. The grout expands to many times its original volume and forms a pliable water tight mass preventing water infiltration and stabilizing the surrounding material. The area is then sealed using a surface grout. 

Photo of worker in pumping station

  • Repair personnel entering pumping station

Leaking joint in pumping station wall 

  • Water infiltration through wall

 

Joint sealed in pumping station wall

  • Area chemically sealed to stop infiltration

Additional Comments

Very cost effective method of stopping water infiltration.
Water can move around the sealed area and exerts pressure on areas not sealed. In high water pressure areas it is often necessary to chase the water to provide a permanent solution.