Analysis of Crustal Stress and Its Influence on the Stability of the Deep Tunnel in the Huanaote Mining Area

Table 2

Elastic modulus and Poisson’s ratio at each measuring point.

Point	E (GPa)	υ	K1	K2	K3	K4
350 m level	36.18	0.141	1.123	1.114	1.015	0.967
350 m level	36.10	0.140	1.124	1.117	1.005	0.997
300 m level	35.010	0.131	1.2641	1.1508	1.0078	0.9885
300 m level	36.14	0.143	1.1557	1.1059	1.0816	0.9776
250 m level	35.14	0.132	1.1616	1.1608	1.1078	0.9971
100 m level	36.22	0.141	1.216	1.108	1.105	0.9885
80 m level	36.18	0.142	1.325	1.210	1.134	0.9842