Analysis of the Influence of Groundwater Level Fluctuation on Karst Soil Cave Collapse

Table 3

The amplitude of increase and decrease of water-gas pressure during the next water level rise and fall with different initial water level heights.

	Initial water level height (mm)
	100	Water-gas pressure increase amplitude (kPa)	1.26	1.364	1.003
Water level rises	25		1.345	1.402	1.220
	0		0.441	0.616	0.529
	100	Water-gas pressure drop amplitude (kPa)	3.723	3.932	1.101
Water level drops	25		1.889	2.086	1.755
	0		0.450	0.819	0.799