An Investigation into the Tunnel-Soil-Pipeline Interaction by In Situ Measured Settlements of the Pipelines

Table 2

Detailed information of the monitored pipelines.

No.	Type	Material	Diameter (mm)	Cover depth (m)	Wall thickness (mm)	Joint	Section length (m)	Installation time (s)
1	Water	Steel	1400	2.26	12	Weld	6	1970
2	Water	Cast iron	300	2	8	Socket	5	1980
3	Water	Steel	800	2.55	5	Weld	6	1950
4	Gas	Steel	400	1.41	5	Weld	6	1980
5	Gas	Steel	500	1.41	14.5	Weld	9	1980
6	Water	Cast iron	800	1.5	18	Socket	5	1960