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

Table 6

Hole rock shear fracture analysis results in UGS.

Well	Maximum principal stress/MPa	Vertical stress/MPa	Minimum principal stress/MPa	Cohesive stress/MPa	Maximum shearing stress/MPa	Shear strength /MPa	Shear fracture factor /%
UGS6				4.66	2.49	3.54	0.703
UGS7				4.35	2.22	3.68	0.603
UGS8				4.05	2.27	3.72	0.510
UGS9				4.62	2.13	3.47	0.614
UGS10				4.50	2.69	3.57	0.754