Abstract：
Considering that metro construction may cause damage to adjacent underground pipelines and using the construction of Xi′an Metro Line 3 as an example, this paper determines the main modes of pipeline damage through a field investigation. The main influential factors for pipeline deformation (e.g., engineering geology, hydrogeology, distance between the tunnel and pipeline, tunnel construction and pipeline characteristics) and the secondary factors (e.g., horizontal/vertical distance between two pipelines, construction method, pipeline size, pressure in the pipeline, burial depth of the pipeline, pipeline joint type, angle between the pipeline and tunnel) are determined based on expert investigation. The risk grades of different pipelines and the corresponding protection measures are determined by adopting a fuzzy comprehensive evaluation and a relevant risk assessment system is established for pipeline safety.
2016, Vol. 53 