Study on Stress-Strain Characteristics of Pipeline-Soil Interaction under Ground Collapse Condition

Table 3

Simulated conditions.

Influencing factor	Factors of collapse area		Pipeline factors
	Collapse length (m)	Cover layer thickness (m)	Buried depth (m)	Pipeline diameter (mm)	Wall thickness (mm)
Collapse length	20	4	1	1016	18.4
	40	4	1	1016	18.4
	80	4	1	1016	18.4
	120	4	1	1016	18.4
Cover layer thickness	40	4	1	1016	18.4
	40	6	1	1016	18.4
	40	8	1	1016	18.4
	40	10	1	1016	18.4
Buried depth	40	4	0.5	1016	18.4
	40	4	1	1016	18.4
	40	4	1.5	1016	18.4
	40	4	2	1016	18.4
Pipeline diameter	40	4	1	610	18.4
	40	4	1	914	18.4
	40	4	1	1016	18.4
	40	4	1	1219	18.4
Wall thickness	40	4	1	1016	7.9
	40	4	1	1016	16.2
	40	4	1	1016	18.4
	40	4	1	1016	20.6