A Multisource Monitoring Data Coupling Analysis Method for Stress States of Oil Pipelines under Permafrost Thawing Settlement Load

Figure 24

Bending stress of pipeline versus distance from X1 section for various years. (a) X1-X18 section (2014/11/19). (b) X1-X18 section (2017/3/17). (c) X1-X18 section (2018/2/22).

(a)

(b)

(c)