Effects of Pipe Roof Support and Grouting Pre-Reinforcement on the Track Settlement

Table 1

Calculation parameters [20].

Material	Thickness (m)	Density (kg/m^3)	Elasticity modulus (MPa)	Poisson’s ratio	Cohesion (kPa)	Internal friction angle (°)
Miscellaneous soil	2.04	1600	9	0.41	5	6
Plain filling soil	2.56	1800	12	0.38	16	16
New loess (above the water level)	3.75	1800	15	0.34	34	20
Saturated soft loess	4.83	1750	8	0.32	38.2	19.5
New loess (under the water level)	3.09	1900	22	0.31	40	20.5
Paleosol	10.96	2010	33	0.30	48	21.5
Silty clay	57.78	2100	40	0.23	100	35
Track	0.07	2800	21	0.2	—	—
Track bed	0.15	2400	19	0.3	—	—
Subgrade	0.35	2800	19	0.24	—	—
Primary lining	0.3	2300	2000	0.26	—	—
Secondary lining	0.5	2500	2700	0.2	—	—