Comparative Study of Wellhole Surrounding Rock under Nonuniform Ground Stress

Table 1

Circumferential stress around the hole corresponding to different m values (unit: MPa).

Angle	m
	1	0.9	0.8	0.7	0.6	0.5	0.4	0.3	0.2	0.1	0
0°	−101.01	−85.76	−70.5	−55.25	−40	−24.74	−9.49	5.76	21.02	36.27	51.53
30°	−101.01	−90.86	−80.71	−70.55	−60.4	−50.25	−40.1	−29.95	−19.79	−9.64	0.51
60°	−101.01	−101.06	−101.11	−101.16	−101.21	−101.27	−101.32	−101.37	−101.42	−101.47	−101.52
90°	−101.01	−106.16	−111.32	−116.47	−121.62	−126.77	−131.93	−137.08	−142.23	−147.38	−152.54
120°	−101.01	−101.06	−101.11	−101.16	−101.21	−101.27	−101.32	−101.37	−101.42	−101.47	−101.52
150°	−101.01	−90.86	−80.71	−70.55	−60.4	−50.25	−40.1	−29.95	−19.79	−9.64	0.51
180°	−101.01	−85.76	−70.5	−55.25	−40	−24.74	−9.49	5.76	21.02	36.27	51.53
210°	−101.01	−90.86	−80.71	−70.55	−60.4	−50.25	−40.1	−29.95	−19.79	−9.64	0.51
240°	−101.01	−101.06	−101.11	−101.16	−101.21	−101.27	−101.32	−101.37	−101.42	−101.47	−101.52
270°	−101.01	−106.16	−111.32	−116.47	−121.62	−126.77	−131.93	−137.08	−142.23	−147.38	−152.54
300°	−101.01	−101.06	−101.11	−101.16	−101.21	−101.27	−101.32	−101.37	−101.42	−101.47	−101.52
330°	−101.01	−90.86	−80.71	−70.55	−60.4	−50.25	−40.1	−29.95	−19.79	−9.64	0.51
360°	−101.01	−85.76	−70.5	−55.25	−40	−24.74	−9.49	5.76	21.02	36.27	51.53