Lithology

Thickness (m)

Evaluation coefficient

m_i*Q_i

loess

gravel

sandy mudstone

2.00

4.00

11.00

1

1

0.6

2

4

6.6

fine-grained sandstone

13.00

0.3

3.9

sandy mudstone

4.00

0.6

2.4

mudstone

6.75

0.55

3.7125

medium-grained sandstone

15.40

0.4

6.16

sandy mudstone

3.35

0.6

2.01

mudstone

7.30

0.55

4.015

fine-grained sandstone

2.10

0.3

0.63

mudstone

11.60

0.55

6.38

fine-grained sandstone

2.50

0.3

0.75

sandy mudstone

18.38

0.6

11.028

2 1 3 seams

0.62

1

0.62

mudstone

1.80

0.55

0.99

2 1 2 seams

1.64

1

1.64

carbonaceous mudstone

0.79

0.8

0.632

sandy mudstone

4.27

0.6

2.562

total

110.5

60.03