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. Additionally, they 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.3
See also
External links
- Curtain Grouting the Georgetown Lighthouse
- Avanti Group Case Study: Constructing Grout Curtain for Dam
- Barden Ridge Dam, Sutherland, NSW - Grout Intensity Number (GIN) Method Project Archived 2012-03-20 at the Wayback Machine
- Technical Resource for Jet Grouting
References
"How grouting is used in dam foundations". Archived from the original on 2009-11-09. Retrieved 2009-12-17. https://web.archive.org/web/20091109035416/http://www.grouters.org/rockgrout/Dams%20Usage.htm ↩
Answer.com – Grout curtain http://www.answers.com/topic/grout-curtain ↩
"How grouting is used in dam foundations". Archived from the original on 2009-11-09. Retrieved 2009-12-17. https://web.archive.org/web/20091109035416/http://www.grouters.org/rockgrout/Dams%20Usage.htm ↩