Influence of Buried Depth and Non-Uniformly Distributed Driving Force on Stress Characteristics of Pipelines in Landslide Regions

Choosing the reasonable depths of a buried pipeline is one of the crucial issues for long-distance gas transmission pipelines. This paper focuses on the mechanical analysis of a pipeline with a different buried depth under the driving force of a landslide. The relationship between the bending moment, shear force, displacement and buried depth of pipeline can be derived under certain assumed conditions. The result of the Zhong County-Wuhan City gas transmission pipeline project shows that the moment reaches a greater value at the junction and the midsection of the pipeline and the shear force reach maximum at the junction along with the increase of buried depth of the pipeline. On the basis of the stress characteristics of deep-buried pipeline in engineering practice, it can improve the safety of a gas transmission pipeline by enhancing the piping material performance at the junction and the middle part of the pipeline.