Research on the Collapse Coefficient of Collapsible Loess under Unloading

Table 7

Coefficient of constant pressure and unloading coefficient of subsidence.

Buried depth (m)	Initial pressure (kPa)	Unloading quantity (kPa)	Upper pressure after unloading (kPa)	Unloading stress ratio K	δS	Unloading collapse coefficient δxs
1	200	28	172	0.86	0.073	0.056
2	200	28	172	0.86	0.061	0.047
3	200	28	172	0.86	0.069	0.053
4	200	28	172	0.86	0.056	0.043
5	200	28	172	0.86	0.05	0.039
6	200	28	172	0.86	0.043	0.033
7	200	28	172	0.86	0.039	0.030
8	200	28	172	0.86	0.035	0.027
9	200	28	172	0.86	0.033	0.025
10	200	28	172	0.86	0.021	0.016