Study on Mechanical Properties and Nonlinear Strength Model of Deep Water-Sensitive Rock in Xianglu Mountain Tunnel

Table 1

Deformation parameters of limestone and silty mudstone.

Confining pressure/MPa	Elastic modulus/GPa		Deformation modulus/GPa		Poisson’s ratio
	Limestone	Silty mudstone	Limestone	Silty mudstone	Limestone	Silty mudstone
0	31.8	9.6	25.3	6.8	0.27	0.29
10	35.1	13.9	30.7	11.8	0.27	0.28
20	38.7	17.6	36.1	15.3	0.26	0.27
30	41.8	20.5	39	18.3	0.26	0.27
40	43.7	22.1	41.5	20.4	0.26	0.26
50	44.5	23.2	42.2	21.7	0.26	0.26