Table 4 Sediment quality.

From: Study on drainage mode and anti-clogging performance of new waterproofing and drainage system in a tunnel

Test materials

Convex shell drainage plate

Capillary drain board

Geotextile

Silt in water collecting tank (g)

362.7

11.3

35.2

Deposits on material surface (g)

18

3.2

29.7

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