Field Test Study of the Artificial Ground-Freezing Method Subsurface Excavation Construction of Watered Sandy Stratum in Collapsible Loess Area

Table 3

Calculation of the frost-heaving displacement of the inner wall of the cross passage.

Displacement direction	Location of inner wall	Extreme value of frost heave after excavation calculation (cm)	Extreme value of frost heave at the beginning of excavation calculation (cm)	Reasonable extreme value of frost-heaving displacement after excavation (cm)
		A	B	AB
Y-direction	Left	9.24	−1.69	10.93
	Right	−11.92	1.91	−13.83
Z-direction	Top	3.81	6.46	−2.65
	Bottom	−0.75	−4.61	3.86
X-direction	Middle	11.35	−1.40	12.75