水利水电技术（中英文）2024，Vol.55Issue(4)：36-47,12.DOI:10.13928/j.cnki.wrahe.2024.04.004
基于原型监测与数值计算的管道边坡灾害安全评估与分析
Pipeline slope disaster safety evaluation and analysis based on in-situ monitoring and numerical calculations
摘要
Abstract
[Objective]Oil and gas pipelines are mainly buried in mountainous areas in China and have been threaten by frequent slopes of slopes.The slope is easy to occur landslides when it is unstable,and the stability of the slope is particularly important for the safety of the pipeline.Single method such as remote sensing technology,prototype monitoring,and numerical simulation are difficult to comprehensively evaluate and analyze the safety of pipeline slope.To enrich the research in this area,[Methods]based on the method of combining prototype monitoring with FLAC3D numerical simulation,this study analyzes the safety and sta-bility of the oil pipeline and slope at the Qujing Station PQ083-020.[Results]Compared with the stability and displacement of the slope and the displacement and stress of pipelines under different original and rainfall working conditions,the result show that it is difficult to evaluate the stability of the three broken surfaces based on the single parameters of rainfall,inclination,displace-ment,and soil pressure.Under the effect of the maximum rainfall of 3.6 mm during the monitoring period,the safety and stabili-ty coefficient of the slope is equal to 1.027,which is lack of stability.[Conclusion]Rainfall is one of the factors that cause un-stable trends in the slope and the increase of stress of pipelines.When the rainfall warning threshold exceeds 24 mm/d,the slope is risk of loss of stability and damage.At this time,the stress and displacement of the pipeline was 0.130 MPa and 0.028 m,which was still safe.The result of the research provide certain guidance for the early warning of slope safety,and the threat of the disaster near the project to the pipeline and nearby factories and personnel will be reduced,which is of great significance for the analysis of the stability of the slope and the risk assessment of the pipeline.关键词
数值模拟/原型监测/油气管道/边坡灾害/风险评估/降雨/遥感/滑坡Key words
numerical simulation/in-situ monitoring/oil and gas pipelines/slope disaster/risk evaluation/rainfall/remote sensing/landslide分类
石油、天然气工程引用本文复制引用
曾成,冯涵璐,王仁超..基于原型监测与数值计算的管道边坡灾害安全评估与分析[J].水利水电技术（中英文）,2024,55(4):36-47,12.基金项目
国家自然科学基金项目(U21A2008) （U21A2008）
四川省科技计划重点研发项目(2022YFS0586) （2022YFS0586）
