Research on the Method of Ground Stress Balance under Complex Conditions Based on Geometric Tracing

Table 2

Model material property parameters.

Materials	Modulus of elasticity (kPa)	Poisson’s ratio	Cohesion	Angle of friction (°)	Gravity (kN/m^3)
Powdered clay	1.5 × 10^4	0.3	32	14	20
Powdered sand	1.8 × 10^4	0.35	35	16	21
Sandy soil	2.0 × 10^4	0.35	36	20	23
Mesothermal sandstone	1.0 × 10^6	0.2	70	35	24
Concrete	3.15 × 10^7	0.2	—	—	25