油气管道风险因素的权重赋值方法研究

对油气管道进行风险分析的一个核心问题就是对评价因子的赋权，赋权的合理与否直接影响到评价结果的科学性和准确性。针对油气管道风险分析涉及的众多评价因素都具有模糊随机性的特点，尽量减少各种权重确定方法对主观性的依赖，对目前管道行业风险评价中赋权方法进行了归纳总结，讨论了近十种主客观赋权方法的应用原理、步骤和效果，并指出其各自的不足和改进方法。结合当前油气管道风险因素赋权研究的实际，提出了有待深入研究的相关问题

METHOD OF ASSIGNING WEIGHT TO RISK FACTORS OF OIL AND GAS PIPELINE

The core issue for the risk analysis of oil and gas pipeline is how to assign weight to risk factors. Whether the assigned weight is reasonable or not will directly affect the scientificalness and accuracy of the result of risk analysis. This paper drew a conclusion on the methods of assigning weight during the risk assessment of present pipeline industry, and showcased the application theories, steps and performances of nearly 10 kinds of subjective and objective assigning weight methods, and it pointed out their limitations and methods for improvement respectively. This was done aiming at the feature that the numerous risk factors concerning risk analysis of oil and gas pipeline was of fuzzy randomization and from the principal that tried to reduce the dependency of methods for identifying weight on subjectivity of human being. Finally, combining the present practices in assigning weight study to risk factor of oil and gas pipelines, this paper puts for ward some relevant issues to be further studied in near future.