Table 3 Maximum surface deformation at multi slicing mining.

From: Investigation of surface subsidence behaviour in multi-slice longwall mining using numerical simulations in Barapukuria coal mine, Bangladesh

Phases

Panels

Maximum value of ground subsidence (m)

Maximum value of horizontal displacement (m)

Subsidence ratio

Horizontal co-efficient

1st slice

Panel 1

0.49

0.26

0.08

0.53

Panel 2

1.32

0.67

0.22

0.51

Panel 3

2.15

1.06

0.36

0.49

2nd slice

Panel 4

2.91

1.37

0.49

0.47

Panel 5

3.10

1.41

0.52

0.45

Panel 6

3.48

1.49

0.58

0.43

3rd slice

Panel 7

4.02

1.65

0.67

0.41

Panel 8

4.61

1.81

0.77

0.39

Panel 9

5.14

1.91

0.86

0.37

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