Calculation of Friction Force for Slurry Pipe Jacking considering Soil-Slurry-Pipe Interaction

Table 4

The general geotechnical parameters.

Soil group	γ (kN/m^3)	φ (°)	c (kPa)	Es (MPa)		e
Gravel	18.7∼22.8	33∼45	0	14∼42	0.15∼0.25	0.28∼0.62
Sand	19∼20.5	28∼42	0	10∼46	0.25∼0.35	0.31∼1.27
Clayey sand	19.5∼21	13∼30	2∼7	11∼23	0.30∼0.40	0.41∼1.96
Sandy clay	18∼21	17∼24	5∼40	9∼45	0.25∼0.35	0.80∼2.24
Clay	17.5∼19	15∼18	25∼65	14∼28	0.25∼0.42	1.00∼2.50