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Table 3 Results of the permeability measurements for Samples 1–4

From: In-situ permeability of fault zones estimated by hydraulic tests and continuous groundwater-pressure observations

Number of measurement

Sample no. 1 (depth of 76.40–76.80 m)

Sample no. 2 (depth of 125.60–125.90 m)

1

2

3

4

5

1

2

3

4

5

Measurement time (t2 − t1, s)

36,360

41,580

39,000

48,960

41,820

36,360

41,580

39,000

48,960

41,820

Difference of water level (h, m)

20.00

20.00

20.00

20.00

20.00

20.00

20.00

20.00

20.00

20.00

Runoff volume (Q, 10−7 m3)

1.0

1.0

1.0

1.0

1.0

2.0

2.0

2.0

2.0

2.0

Hydraulic conductivity (10−12 m s−1)

3.5

3.0

3.2

2.6

3.0

6.8

6.0

6.4

5.1

5.9

Permeability (10−19 m2)

3.5

3.1

3.3

2.6

3.1

7.0

6.1

6.5

5.2

6.1

Average permeability (10−19 m2)

3.1

6.2

 

Sample no. 3 (depth of 564.20–564.50 m)

Sample no. 4 (depth of 573.40–573.70 m)

1

2

3

4

5

1

2

3

4

5

Measurement time (t2 − t1, s)

39,780

40,980

48,000

46,080

40,800

39,780

40,980

48,000

46,080

40,800

Difference of water level (h, m)

10.00

10.00

10.00

10.00

10.00

10.00

10.00

10.00

10.00

10.00

Runoff volume (Q, 10−7 m3)

1.0

1.0

1.2

1.0

0.80

1.2

1.1

1.2

1.0

0.90

Hydraulic conductivity (10−12 m s−1)

3.6

3.5

3.5

3.1

2.8

4.3

3.9

3.6

3.1

3.2

Permeability (10−19 m2)

3.6

3.5

3.6

3.1

2.8

4.4

3.9

3.7

3.2

3.2

Average permeability (10−19 m2)

3.4

3.7

  1. Permeability was measured five times for each sample