Dynamic Response Analysis of Road Surface Driven by Explosion of Buried Gas Pipeline
In order to explore the dynamic response law of the road surface driven by the explosion of buried gas pipelines,the ANSYS software was used to simulate the explosion process of natural gas pipelines.The over-pressure peak values at different points of the road were obtained by changing the three main factors of pipeline:burial depth,wall thickness,and laying angle.The human and material safety index was obtained by comparing it with the safety evaluation criteria.The research results show that the buried depth of pipelines has a significant impact on the peak value of road over-pressure.Under a single variable change,the peak value of road over-pressure decreases as the buried depth increases.When the buried depth exceeds 5 m,the explosion shock wave is not sufficient to damage the road surface and have an impact on people and buildings;When the pipe wall thickness changes,the peak value of road over-pressure presents an"increase decrease"trend.When the wall thickness is 15 mm,the peak value of over-pressure reaches its peak.When the wall thickness reaches 20 mm,the explosion shock wave is not sufficient to cause damage to people and objects.When the included angle of pipeline laying changes,the peak value of road over-pressure presents a trend of"decreasing".There is no safe laying angle directly above the explosion point of the pipeline.When the laying angle is 60°,the rest of the road is within the safe range.
buried pipeline explosionover-pressure peakfinite element analysissafety assessmentaccident prevention
万方数据
维普
