Table 4 Rock mechanical parameters.

From: Sensitivity analysis of operation parameters of the salt cavern under long-term gas injection-production

Property

Material

Rock salt

Mudstone

Interlayer

Young’s modulus (GPa)

6.84

22.9

38.5

Poisson’s ratio

0.21

0.15

0.20

Cohesion (MPa)

8.40

7.75

5.80

Friction angle (°)

39.3

45.4

46.9

Tensile strength (MPa)

1.38

3.19

1.42

A (creep model) (MPa-n h−1)

9.0 × 10–7

2.8 × 10–6

2.8 × 10–6

n (creep model)

2.62

2.10

2.10

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