Mechanical Behavior of Loess Tunnels Caused by Surface Water Joints Infiltration

Table 2

Material parameters.

Loess	Gravity (kN/m^3)	Cohesive force (kPa)	()	Elastic modulus (MPa)	Poisson’s ratio ()
Natural water content	15.2	36	26	22.62	0.32
Water immersion	17.7	9	18	2.26	0.32