A grout curtain is a barrier that protects the foundation of a dam from seepage and can be made during initial construction or during repair.1 Additionally, it can be used to strengthen foundations and contain spills.
Characteristics
A grout curtain usually consists of a row of vertically drilled holes filled with pressurized grout, a process commonly known as pressure grouting.2 The holes are drilled in intervals and in such a way that they cross each other, creating a curtain.
Method
Grout is injected with grouting jets, which use a high-pressure fluid stream (i.e., slurry or water) to erode a cavity in the soil.1
References
References
- "How grouting is used in dam foundations". Archived from the original on 2009-11-09. Retrieved 2009-12-17.
- Answer.com – Grout curtain