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, they can be used to strengthen foundations and contain spills.

A schematic of a grout curtain, see drill holes and grouted area.

Characteristics

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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

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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]

See also

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References

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  1. ^ a b "How grouting is used in dam foundations". Archived from the original on 2009-11-09. Retrieved 2009-12-17.
  2. ^ Answer.com – Grout curtain
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