Design and Analysis of Grouting Pressure in Slurry Pipe Jacking Based on the Surrounding Soil Stability Mechanical Characteristics

Table 1

Main geotechnical parameters of soils at the construction site.

Soil layer	Depths (m)	Density	Water content	Void ratio	Cohesion	Internal friction angle
		(g/cm^3)	(%)		(kPa)	(°)
(1) Plain fill	0-3.98	1.76	30.4	0.865	27.9	16.8
(2) Silty clay	3.98-6.58	1.84	25.03	0.81	14.91	15.42
(3) Coarse sand	6.58-13.28	2.65			8	30