Cause Analysis and Countermeasure for Frost Heave Deformation of Natural Gas Pipelines
In recent years,the pipeline pressure is increasing as the natural gas consumption is increasing,which results in the deformation and flotation of some natural gas pipelines in gas station with the pressure regulating devices,especially in the winter.It brings the hidden hazard to the natural gas station safety.Combined with the actual operation situation of the company,it concludes that the natural gas pipeline frost heave deformation is caused by throttling effect of the pressure regulating devices through the analysis.Four technical preventive measures are proposed to address or prevent the frost heave deformation of natural gas pipelines.After analyzing the advantages and disadvantages of these measures,it is suggested that the frost heave prevention of natural gas pipelines should start from the planning and design stage.The monitoring should be strengthened and the modification should be implemented timely after production and operation to ensure the safe and stable operation of gas stations.
NETL
NSTL
万方数据
