Cause Analysis And Risk Control Of Buried Pipeline Damage

In recent years,accidents in buried pipelines in cities have occurred from time to time.There is a serious shortage of management of pipelines in accident analysis.At the same time,people have not paid sufficient attention to safety awareness and environmental pollution problems.With the acceleration of urbanization,more and more people are pouring into the cities.Based on the advantages of convenient,fast and convenient deployment of buried pipelines,more and more cities have gradually popularized the use of buried pipelines.The use of buried pipelines also brings some potential safety hazards while achieving the popularity of pipeline gas and pipeline natural gas.Since the gas transported by buried pipelines is generally flammable,explosive and toxic,if the pipeline occurs in dense cities to sabotage a spill accident will not only bring adverse impact on the life and travel of the surrounding citizens,but will even have a bad influence on the entire society.Therefore,it is necessary to analyze how to protect the buried pipeline and analyze the possible causes of damage,In order to avoid these risks has very important practical significance.In this paper,systematically analyzed the reason for the destruction of buried pipelines is carried out,and the risk management is reviewed.The main contents are as follows:1? Based on the reasons for the destruction of buried pipelines,the type of damage can be divided into natural damage and man-made damage,and then analyze the causes of man-made damage factors that account for the major damage factors.According to the analysis of past accidents,a number of factors were summarized to establish the accident tree model of pipeline damage,and the principle of minimum segmentation was used to analyze the factors that led to the destruction of buried pipelines by using Boolean algebra.At the same time,various dangerous sources are also identified,so as to further improve the safety of buried pipelines.2 ? According to the SHEL model,a modified SHEL model is established for the man-made damage types of buried pipelines,and the main reason for man-made damage caused by man-made pipelines is analyzed.According to the actual project case,through the gray relational analysis method,the buried pipeline accident tree model is established,and the possibility of such buried pipeline destruction is found through comparison.3 ? This paper,The concept,characteristics and contents of underground pipeline risk and risk management are introduced and the underground pipeline risk function based on probability theory is established.In terms of risk management,a hierarchy of risk management plans are constructed to reduce the risk of damage to buried pipelines from the aspects of organization,personnel and funds respectively.4?According to a practical project of urban buried pipelines,based on the theory of fuzzy theory,an accident tree model is established to investigate the factors that may undermine the buried pipelines in urban areas(man-made damage factors,pipeline corrosion,pipeline construction and pipeline design)In this paper,we calculate the single-factor fuzzy matrix of underground pipelines,and then establish the second-order influencing factors under some factors.For each influencing factor,we establish the multi-factor fuzzy matrix by setting different weighting multipliers,Degree(man-made damage factors,pipeline corrosion,construction,design factors)the degree of risk value.The method of exponential system is used to set the grade of buried pipelines risk safety into five levels.The calculation results show that the calculation of pipelines in the project is in a safe state through the risk control of the buried pipelines in the previous chapters.In the low risk zone.