Study on Construction Influence of Shield Tunnel of Urban Rail Transit on Large-Section Mining Tunnel

Table 1

Stratigraphic physical and mechanical parameters.

Sequence	Soil layer	Elastic modulus (MPa)	Cohesion (kPa)	Poisson’s ratio	Internal friction angle (°)	Unit weight (kN/m^3)
1-2-2	Plain fill	2.6	10	0.30	12	18.5
3-1	Silty clay	20.4	23	0.31	15.4	19.1
3-8	Thick pellet soil	46.8	0	0.22	36	18.6
7-2-3	Argillaceous siltstone	700	100	0.35	23.5	24.1