Quantitative Analysis of Gas Pipeline Disaster Consequence in Karst Area Based on PHAST-visual Studio Integrated Method and Its Application
In order to scientifically evaluate the impact of gas pipeline disasters in karst area,two typical consequence modes of jet fire and vapor cloud explosion were determined based on pipeline failure characteristics,and the hazard criteria of thermal radiation and shock wave overpressure applicable to gas pipeline disasters in karst area were selected.The evaluation model system for the severity of gas pipeline disaster consequences in karst areas was proposed from the four dimensions of hazard area,casualties,economic loss and environmental damage,and the software for analysis of gas pipeline disaster consequences in karst area was developed based on Visual Studio platform.Based on the actual engineering case in karst area,combined with the regional economic and social development,karst natural geology and gas pipeline engineering characteristics,the impact scope of disaster consequences was simulated and analyzed based on PHAST software.Targeted disaster risk control measures were proposed for personnel and objects in the affected area based on hazard criteria.By introducing relevant standards and regulations issued by the government,industry and enterprises,the impact degree of disaster consequences were quantified.The results show that the proposed PHAST-Visual Studio integration method can make up for the subjectivity problems in the evaluation process of previous studies,bring social science ideas into the engineering risk assessment research,and improve the efficiency of disaster consequence analysis through computer software programming,which is helpful to significantly reduce the level of disaster consequences of gas pipelines in karst area.
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维普
