Table 1.

Physical properties of loess in study area.

The number of the borehole	Sample depth m	Water content ω %	Density ρ g/cm3	Dry density ρd g/cm3	Soil particle proportion Gs	Void ratio e	Degree of saturation Sr %	Porosity n %	Liquid limit ωL %	Plastic limit ωP %	Plasticity index IP	Liquidity index IL
TK22-1	2.3–2.5	13.5	1.56	1.37	2.70	0.964	37.8	49.1	21.5	14.6	6.9	− 0.2
TK22-2	3.3–3.5	11.4	1.72	1.54	2.70	0.748	41.0	42.8	21.3	14.5	6.8	− 0.5
TK22-3	4.3–4.5	6.0	1.65	1.56	2.70	0.735	22.0	42.4	20.6	14.0	6.6	− 1.2