Analysis of Plastic Zone and Pressure Variance Features of Surrounding Rock of High-Altitude Macker Tunnel: A Case Study in Jiangluling Macker Tunnel in Qinghai

Table 1

Mechanical parameters value of the surrounding rock.

S. no.	Parameter name	Symbol	Unit	Value
1	Density		kg/m^3	2593
2	Water content		%	3.78
3	Elastic modulus	E	GPa	0.201
4	Poisson ratio	u	—	0.28
5	Cohesion	c	KPa	88.94
6	Angle of internal friction		°	29.46