Abstract：
Taking loess area underground tunnel construction on the background by ADINA finite element simulation of the construction process of urban underground tunnel for water supply and gas pipes Settlement displacement actual monitoring data analysis and flexible pipeline safety calculation and analysis show that in the underground tunnel construction process in line with the amount of deformation is proportional to the distance from the tunnel and pipeline deformation was concave, under the same conditions of the pipeline construction materials more likely to cause pipeline settlement ratio line position.
