Table 3. The volume density of the tensile crack part in the landslide area.

Soil depth(cm) / Soil hardness (kgf/cm3)	Normal site (control site)	Tensile crack on the top		Tensile crack in the bamboo field		Groundwater spill point
		1	2	1	2
0	0.5	0.5	0.2	0.3	0.2	0.3
5	9.0	4.5	0.2	0.3	0.2	0.3
10	9.0	10.6 (9.0 cm)	0.2	5.2	2.0	13.0 (8 cm)
15	12.5 (12 cm)		0.2	9.6 (14 cm)
20			0.2
25			0.2
30			0.2
40			3.0
50			2.5
60			3.2 (55 cm)
Soil depth (cm)	12	9.0	55	14	10	8