Finite Element Optimised Back Analysis of In Situ Stress Field and Stability Analysis of Shaft Wall in the Underground Gas Storage

Table 1

Rock mechanics parameters.

Number	Media type	Elasticity modulus/MPa	Poisson’s ratio
1	Reservoir	31200	0.225
2	Fault zone 1	22500	0.270
3	Fault zone 2	23500	0.260
4	Fault zone 3	24000	0.290
5	Other layers	35200	0.220