Safety evaluation method for pipeline with crack defect under landslide geological disaster

The invention discloses a safety evaluation method for a pipeline with crack defects under a landslide geological disaster, belongs to the field of safety evaluation for pipeline geological disasters, and aims to provide a method for evaluating the safety state of the pipeline with the crack defects under the action of the landslide geological disaster. And establishing a landslide lower displacement stress calculation model to obtain landslide lower stress displacement, judging the safety state of the pipeline based on double criteria of yield strength and fracture toughness, and performing quantitative analysis on the safety state of the pipeline. 本发明公开了一种滑坡地质灾害下含裂纹缺陷管道安全评价方法，属于管道地质灾害安全评价领域，本发明旨在提供一种针对滑坡地质灾害作用下，含裂纹缺陷管道安全状态评价，通过对管道断裂韧度适应性分析，得到管道临界断裂韧度值，建立滑坡下位移应力计算模型，得到滑坡下应力位移，基于屈服强度和断裂韧度双判据判断管道安全状态，同时对管道安全状态定量化分析。