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

Figure 7

Longitudinal vibration displacement time curve of the pipeline under different wave velocity conditions. (a) Displacement time course curve at 200 m (normal). (b) Displacement time course curve at 500 m (vacant). (c) Displacement time course curve at 800 m (polymer grouting repair).

(a)

(b)

(c)