Table 1 Mechanical parameters of surrounding rock, orebody, and backfill samples.

From: Stability assessment of surrounding rock in downward mining route supported by slab-wall backfill structure

Categories

Density/Mg/m3

Tensile strength/MPa

Bulk modulus/GPa

Shear modulus/GPa

Rock Shear Strength

c/MPa

φ/°

Surrounding rock

2.65

0.1

4.6

2.8

1.3

45

Orebody

2.65

0.05

2.9

1.7

0.9

40

1:6 high-strength backfill

2.1

0.2

1.3

0.8

0.4

35

1:20 standard-strength backfill

2.1

0.01

0.33

0.2

0.1

25

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