Table 3 Physical parameters of different slurries and collected decanting water quality.

From: Effects of gradation on sandy debris flow behavior

dmax

Sample

Cv (−)

V (cm3)

ρ (g/cm3)

ω (%)

md (g/100 cm3)

CPDW (%)

5 mm

CD

0.547

923

1.949

23.3

3.4

7.4

0.526

888

1.913

24.8

4.5

9.4

0.505

905

1.876

26.4

6.4

13.0

MD

0.442

923

1.766

31.6

1.5

2.7

0.418

915

1.725

33.7

2.6

4.4

0.393

937

1.681

36.1

3.6

6.0

10 mm

CD

0.571

929

1.994

21.5

3.9

9.0

0.550

928

1.957

23.0

4.9

11.0

0.528

967

1.919

24.6

6.1

12.9

MD

0.486

930

1.847

27.8

2.1

4.1

0.464

930

1.809

29.6

2.7

5.0

0.441

944

1.769

31.6

3.7

6.6

20 mm

CD

0.624

5822

2.087

18.0

1.8

4.7

0.611

5771

2.064

18.8

2.2

5.7

0.598

5831

2.042

19.7

2.7

6.7

MD

0.563

5761

1.982

22.0

1.1

2.5

0.544

5850

1.949

23.4

1.5

3.3

0.524

5930

1.914

24.9

2.1

4.5

30 mm

CD

0.636

5786

2.109

17.3

1.6

4.4

0.623

5853

2.086

18.1

2.3

6.1

0.611

5936

2.065

18.8

2.5

6.3

MD

0.595

5917

2.039

19.9

0.9

2.3

0.579

5952

2.012

20.9

1.4

3.4

0.562

6058

1.982

22.1

1.8

4.0

  1. Cv is the solid volume concentration, which is calculated as the volume of solids divided by the sum of the volumes of water and solids. V is the volume of the slurry contained in the testing container. where ρ represents the density of the slurry. ω is the moisture content, which is defined as the weight of water divided by the sum of the weights of water and solids. md is the mass of decanted water per 100 cm3 of slurry during the monitoring period. The CPDW is the cumulative percentage of the decant water at the end of monitoring, which is calculated as the total amount of decant water divided by the total water volume.
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