Research on Pipeline Vulnerability under Landslide Action Based on Improved Unascer-tained Measurement
In order to accurately evaluate the vulnerability level of pipelines under the action of land-slide,taking mountain pipeline in a region as an example,combining the characteristics of pipeline and spatial distribution characteristics of landslide disaster,the vulnerability evaluation index system is estab-lished from three aspects of vulnerability of carrier,sensitivity of disaster causing body,and effective-ness of protection body.Different weighting methods are optimized by the theory of moment estima-tion.Combined with index weight and set pair analysis,an improved unascertained measurement mod-el is formed to predict the vulnerability level and development trend of pipelines.The results show that the angle between pipeline and slope,slope of the landslide,and cut-off drainage have the largest opti-mal weight,and the optimal weight can reduce the subjectivity and objectivity of single weight.The improved model avoids the error of evaluation results caused by the artificial selection of confidence lev-el.The system development of pipe sections 6 and 8 is in the"reverse trend",indicating that the risk of the pipe section is increasing.The results are consistent with the actual situation,which proves the ac-curacy and scientific nature of the model.The results above can provide practical reference for pipeline management and route planning in other similar areas.
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