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

Table 2

Comparison between the inversion results and the measured values on principal stress magnitude.

Measured points	Stress components	Inversion value/MPa	Measured value/MPa	Relative error/%
UGS6				6.6
				0.58
UGS7				6.81
				0.31
UGS8				4.69
				4.45
UGS9				7.19
				4.47
UGS10				2.69
				5.45