A Numerical Approach for the Quasi-Plane Strain-Softening Problem of Cylindrical Cavity Expansion Based on the Hoek-Brown Failure Criterion

Table 1

Results by the proposed approach and Vesic’s solution [1].

		2	3	4	5	6	7
(MPa)	Vesic	21.9	27.6	32.4	36.6	40.4	43.9
	H-B	22.8	28.3	33.0	37.0	40.5	43.6
Differences	—	4.1%	2.5%	1.9%	1.1%	0.3%	0.7%