Table 1
General information on the samples.
| Borehole | Depth range [m] | Number of samples |
|---|---|---|
| GTO-9 | 61.0–99.0 | 14 |
| GTO-1 | 10.0–38.5 | 11 |
| GTO-2 | 40.0–72.0 | 10 |
| GTO-5 | 56.4–93.0 | 16 |
| GTO-3 | 21.0–62.3 | 13 |
| HSdr-14D | 23.0–46.6 | 8 |
Figure 1
View of the dump soil samples: (a) after extracting from Shelby tube (∅ ∅70 mm), (b) after extracting from PVC tube (∅ ∅100 mm) and (c) cross sections.
Figure 2
Histogram of the dump soil water content distribution.
Table 2
Results of water content tests of the dump soil in particular soil groups.
| Dump soil group | Average [%] | Standard deviation [%] | Minimum [%] | Maximum [%] | Number of specimens |
|---|---|---|---|---|---|
| A-1 | 25.45 | 2.65 | 20.25 | 30.75 | 27 |
| A-2 | 26.87 | 7.05 | 17.64 | 40.30 | 71 |
| A-3 | 25.99 | 7.40 | 13.64 | 44.46 | 155 |
| A-4 | 25.50 | 5.21 | 15.90 | 37.81 | 45 |
| B-1 | 22.41 | 4.85 | 16.21 | 34.02 | 18 |
| B-2 | 21.99 | 5.55 | 16.55 | 38.17 | 34 |
| B-3 | 21.37 | 4.13 | 11.85 | 29.22 | 91 |
| B-4 | 17.10 | 4.65 | 10.08 | 31.69 | 39 |
Figure 3
Histograms of water content distribution of the dump soil in particular groups.
Figure 4
Histogram of the dump soil bulk density distribution.
Table 3
Results of bulk density tests of the dump soil in particular soil groups.
| Dump soil group | Average [10−3 kg/m3] | Standard deviation [10−3 kg/m3] | Minimum [10−3 kg/m3] | Maximum [10−3 kg/m3] | Number of specimens |
|---|---|---|---|---|---|
| A-1 | 2.05 | 0.06 | 1.87 | 2.13 | 27 |
| A-2 | 1.94 | 0.14 | 1.71 | 2.15 | 71 |
| A-3 | 1.94 | 0.15 | 1.53 | 2.19 | 155 |
| A-4 | 1.92 | 0.13 | 1.66 | 2.14 | 45 |
| B-1 | 2.01 | 0.09 | 1.85 | 2.21 | 18 |
| B-2 | 1.98 | 0.13 | 1.68 | 2.12 | 34 |
| B-3 | 1.98 | 0.12 | 1.67 | 2.19 | 91 |
| B-4 | 2.10 | 0.11 | 1.79 | 2.23 | 39 |
Figure 5
Histograms of bulk density distribution of the dump soil in particular groups.
Figure 6
Changes in the average water content, bulk density and consistency of the dump soil for particular sections of the samples.
Figure 7
Correlation between bulk density and water content of dump soils.
Figure 8
Illustration of the results of strength tests of soil of soft consistency (A-1 and B-1) from one sample.
Figure 9
Illustration of the results of strength tests of soil of firm consistency (A-2 and B-2) from one sample.
Figure 10
Illustration of the results of strength tests of soil of stiff consistency (A-3 and B-3) from one sample.
Figure 11
Illustration of the results of strength tests of soil of very stiff consistency (A-4 and B-4) from one sample.
Figure 12
Result of strength tests for soil A-1.
Figure 13
Result of strength tests for soil A-2.
Figure 14
Result of strength tests for soil A-3.
Figure 15
Result of strength tests for soil A-4.
Figure 16
Result of strength tests for soil B-1.
Figure 17
Result of strength tests for soil B-2.
Figure 18
Result of strength tests for soil B-3.
Figure 19
Result of strength tests for soil B-4.
Table 4
Result of strength tests.
| Dump soil group | Cohesion [kPa] | Angle of internal friction [°] | Number of samples/specimens | ||||
|---|---|---|---|---|---|---|---|
| cu | Min | Max | ϕu | Min | Max | ||
| A-1 | 23.19 | 12.18 | 37.23 | 2.75 | 1.00 | 3.95 | 6/27 |
| A-2 | 46.66 | 38.98 | 61.65 | 3.71 | 2.11 | 5.43 | 11/71 |
| A-3 | 73.25 | 50.76 | 109.61 | 5.22 | 1.61 | 8.15 | 25/155 |
| A-4 | 89.51 | 68.91 | 142.60 | 6.89 | 2.50 | 7.83 | 6/45 |
| B-1 | 12.07 | 5.81 | 19.49 | 3.90 | 3.40 | 4.37 | 4/18 |
| B-2 | 33.24 | 17.54 | 58.71 | 6.98 | 4.38 | 7.60 | 7/34 |
| B-3 | 48.84 | 27.62 | 93.71 | 11.60 | 5.51 | 12.91 | 13/91 |
| B-4 | 111.42 | 85.50 | 145.41 | 12.23 | 10.00 | 13.41 | 6/39 |
Figure 20
The disparity of results of cohesion and angle of internal friction for soil A-3.