Gabriela Puchalska, IMGW–PIB, CTKZ

Removal of damage that occured in 1964 concerning the wastewater DN3000 collector casing by means of multistage pressure injection

In this paper there will be discussed a case of failure of the casing of a large-diameter sewage collector. The stages of diagnostics, design and repair of the collector casing by means of multistage pressure injection will be presented. The technologies of repairs and protections of the collector structure, adapted to local soil conditions, will be discussed, as well as the procedures of assessing the effectiveness of the staged injections during the execution of soil reinforcement and collector repair.