Experimental Study for the Embedded Depth of Support Structure Foundation Pit in Granite Residual Soil Area

Table 4

Geotechnical parameters used in the study.

Parameter	SPT-blow count/N	α	/MPa	/MPa	/MPa	C/kPa	Φ/°	σ^ref/kPa	n	Rf	K0	m	Ψ/°
Plain fill	6.1	13	8.19	8.19	49.1	15	15	100	0.44	0.9	0.74	0.7	0
Muddy silty clay	2.6	1.3	6.2	6.2	37.2	15	3	100	0.52	0.9	0.94	0.7	0
Sandy silty clay	11.6	1.3	23.2	23.2	139.2	25	20	100	0.41	0.9	0.66	0.7	0
Gravel clay	21.2	1.3	20	20	120	22	22	100	0.44	0.9	0.62	0.7	0
Fully weathered granite	36.5	2.0	80	80	480	20	25	100	0.49	0.9	0.58	1	0
Strongly weathered granite	63.4	2.0	120	120	720	18	30	100	0.45	0.9	0.5	1	5