Dynamic Response Analysis of Buried Drainage Pipes for Polymer Grouting Trenchless Rehabilitation under the Traveling Wave Effect

Table 1

The basal apparent wave velocity of the EI-Centro station.

Depth/m	Thickness (m)	Soil	Apparent wave velocity (m/s)
4.2	4.2	Clay	122
5.6	1.2	Sand clay	122
15.7	10.1	Sandy clay-silting clay	175
21.8	6.1	Sand silt clay	213
34.8	13.0	Fine sand soil	251
42.3	7.5	Silted clay	251
45.9	3.6	Silt fine sand	251
65.5	19.6	Silted clay	305
68.5	13.0	Silt fine sand	—