Stability Analysis and Risk Assessment of Oil and Gas Pipeline Landslide
In order to effectively grasp the stability and danger of oil and gas pipeline landslides,based on the results of on-site landslide investigation and deformation data,the transfer coefficient method and sharp point mutation analysis are first used to evaluate the stability of landslides,and then the P × C classification method is used to evaluate the degree of danger of different evaluation indicators on the pipeline.The example analysis results show that through the transfer coefficient method calculation,the stability coefficient range of the three monitoring profiles under different operating conditions is 1.005～1.224,belonging to an unstable～stable state;Through sharp point mutation analysis,the range of mutation characteristic values for 5 monitoring points is 3.961×10 9～5.331×10 9,all greater than 0,indicating that the corresponding positions of each monitoring point are in a stable state;By comparing the stability evaluation results of the transfer coefficient method and the sharp point mutation analysis,it is concluded that the landslide is currently in a stable state;In the risk assessment results,the overall risk score is 81.25,which is relatively high.The risk level belongs to level Ⅲ,which means that landslide disasters pose a moderate threat to pipelines.Therefore,it is necessary to carry out local and overall prevention and control measures research as soon as possible to ensure pipeline safety.
万方数据
维普
