Design of Groundwater Extraction in Open Cut Foundation Pit and Simplified Calculation of Ground Subsidence due to Dewatering in Sandy Pebble Soil Strata

Table 2

Physical and mechanical parameters of strata.

Name of stratum	Modulus of deformation E (MPa)	Poisson’s ratio	Density (g/cm^3)	Permeability coefficient (m/d)
Miscellaneous fill	2	0.35	1.8	1.25
Silty clay	4	0.29	1.96	0.05
Clayey silt	4	0.30	1.94	0.15
Fine sand	4	0.28	1.85	3
Medium sand	4.0	0.26	1.9	10
Loose pebble layer	18	0.25	2	22
Slightly condensed pebble layer	20	0.23	2.1	22
Medium condensed pebble layer	28	0.20	2.2	22
Compacted pebble layer	38	0.17	2.3	22