Investigating the Effect of Temperature Changes on the Physical Field of Surrounding Rock in a Deep Gold Mine

Table 2

The results of the in situ stress measurement at depths of 75–750 m.

Depth (m)	Horizontal maximum principal stress σ1			Vertical principal stress			Horizontal minimum principal stress σ3
	Value (MPa)	Direction (°)	Dip angle (°)	Value (MPa)	Direction (°)	Dip angle (°)	Value (MPa)	Direction (°)	Dip angle (°)
75	6.01	288.50	−6.30	2.56	250.40	82.00	3.81	198.00	−4.90
150	7.73	280.90	−5.20	4.50	27.70	72.50	5.48	9.40	16.60
420	19.27	284.10	−21.30	10.88	134.4	−65.70	11.05	18.50	−11.10
420	19.39	120.40	−14.90	10.92	169.20	68.10	9.44	34.70	15.80
510	24.55	129.00	4.00	14.49	133.00	−85.00	16.35	222.00	2.00
510	24.64	249.00	3.00	15.68	155.00	82.00	15.02	161.00	−10.00
555	25.71	315.00	−13.00	14.00	14.00	73.00	13.00	50.00	−20.00
600	28.88	103.00	1.00	16.54	10.00	76.00	14.77	13.00	−8.00
600	30.17	110.00	−16.00	16.94	236.00	−70.00	18.83	24.00	−11.00
645	29.57	112.00	−3.00	19.56	1.00	−80.00	15.48	204.00	−9.00
690	31.50	280.00	2.00	19.08	230.00	−79.00	17.54	10.00	−10.00
690	29.77	277.00	4.00	20.84	352.00	−74.00	19.63	8.00	15.00
750	32.78	105.60	−0.59	19.60	18.70	79.20	16.68	15.50	−10.80
750	33.22	119.00	−10.00	19.93	271.00	−82.00	17.10	208.00	−8.00
780	30.72	133.30	−14.90	18.09	149.70	74.50	26.41	224.40	−4.170
960	41.63	145.30	−10.30	26.79	165.50	60.30	25.42	200.20	−6.21