Numerical Simulation of Cracking Failure and Weakening Law of Roadway Surrounding Rock under High Stress

Table 2

Mechanical parameters of surrounding rock in the roadway and calculated parameters of lining.

Name	Poisson's ratio	Elasticity modulus	Gravity	The peak strength	Frictional angle	Permeability ratio in elastic-plastic zone	Pore water pressure coefficient
Limestone	0.361	25.62	23.72	0.397	31.5	10.54	0.321
Lining	0.252	30.0	25.0	–	–	0.55	–
Limestone	0.314	24.94	22.97	0.418	34.4	11.27	0.347
Lining	0.193	30.0	25.0	–	–	0.55	–
Limestone	0.324	26.17	21.83	0.536	37.3	12.45	0.418
Lining	0.317	30.0	25.0	–	–	0.55	–
Limestone	0.262	24.67	22.49	0.385	32.4	10.28	0.313
Lining	0.261	30.0	25.0	–	–	0.55	–
Limestone	0.321	24.89	22.88	0.423	34.6	11.32	0.351
Lining	0.293	30.0	25.0	–	–	0.55	–
Limestone	0.318	26.26	21.91	0.527	37.61	12.33	0.429
Lining	0.417	30.0	25.0	–	–	0.55	–