Numerical Analysis of Pipelines Settlement Induced by Tunneling

Table 2

Physical-mechanical parameters of soil.

Level number	The depth of the bottom (m)	Slice thickness (m)	Elevation of the bottom (m)	The type of soil	Es (MPa)	c (kPa)	φ (°)	Poisson’s ratio v
①2	0.7	0.7	−2.24	Silt	6.64	61	11.4
③1	1.5	0.8	−3.04	Clay	6.26	48	10.9	0.32
③2	6	4.5	−7.54	Silty clay	5.66	24	11.4	0.3
④3	11	5	−12.5	Silty clay	5.78	28	11.3	0.31
⑤	19	8	−20.5	The silty clay layer contains a small amount of silt	5.58	62	10.2	0.32
⑥1	21.5	2.5	−23	Clay	7.16	43	18.8	0.31
⑥2	27.8	6.3	−29.3	Silty clay	8.08	24	23.1	0.31
⑥3	30	2.2	−31.5