Multilevel Collapsibility of Loess under Irrigation in Jinya Town, Gansu Province, China

Table 1

Physical and mechanical properties of the three-level terraced loess in Jinjiaya village.

Number of samples	Sample depth (m)	Water content (%)	Dry density (g/cm^3)	Specific gravity (GS)	Porosity ratio (e)	Size composition (%)			Liquid limit (%)	Plastic limit (%)	Permeability coefficient (cm/s)	Collapsibility coefficient
						Sand	Silt	Clay
1	0.3	17.3	1.38	2.735	0.987	16.12	66.13	17.75	30.7	19.0	1.23E–4	0.134
2	0.9	17.4	1.33	2.845	1.141	25.28	66.03	8.69	30.6	19.2	1.22E–4	0.072
3	1.5	17.6	1.25	2.829	1.256	24.02	67.44	8.54	30.6	19.1	0.82E–4	0.131
4	2.1	17.2	1.38	2.751	0.997	24.96	66.80	8.24	30.4	19.1	1.47E–4	0.049
5	2.7	17.8	1.31	2.868	1.194	25.04	65.29	9.67	30.5	19.1	0.61E–4	0.083
6	3.3	17.8	1.29	2.837	1.198	27.44	64.35	8.21	30.3	19.2	1.18E–4	0.094
7	3.9	16.9	1.35	2.668	0.968	21.52	67.37	11.11	26.5	19.3	0.63E–4	0.077
8	4.5	10.0	1.45	2.944	1.030	24.24	65.30	10.46	30.5	19.2	0.62E–4	0.058
9	5.1	19.6	1.38	2.779	1.014	23.97	67.74	8.29	30.5	19.2	1.22E–4	0.077