澜沧江跨越管段天然气管道落石条件下应力分析

发布时间：2018-06-01 11:41

本文选题：澜沧江跨越管道 + 落石运动路径　；参考：《应用力学学报》2017年03期

【摘要】：澜沧江跨越管道工程的跨越区山体高耸挺拔、地势险峻,两岸陡崖上分布有危岩及崩塌堆积体,其地理位置极易受到崩塌落石危害,落石冲击作用会造成管道刮痕、压坑,引起管道变形失稳甚至破裂,造成油品泄漏。本文以澜沧江跨越段管道及两岸落石为研究对象,首先运用Roc Fall软件建立落石运动路径数值模拟模型,分析落石质量对落石运动过程的影响,并探究了不同质量落石撞击管道时,落石携带的最大动能等特性参数影响规律;然后运用CAESAR II软件对澜沧江跨越段天然气管道进行分析,确定会使其处于危险(或被破坏)状态的落石质量阈值。分析结果可为澜沧江跨越管道落石灾害防护和管道安全运营决策提供科学建议,也可以为地理条件与澜沧江管道相似的管道工程设计、敷设施工、上方危岩防护规划提供指导和借鉴。
[Abstract]:The mountain body in the crossing area of the Lancang River crossing pipeline project is tall and tall, the terrain is steep, and there are dangerous rocks and collapse accumulations on the banks of the steep cliffs. Its geographical location is easily damaged by the collapse and falling stones, and the impact of falling stones will result in scratches and indentation of pipelines. Cause pipeline deformation instability or even rupture, resulting in oil leakage. In this paper, a numerical simulation model of rock falling path is established by using Roc Fall software to analyze the influence of rock drop quality on the rock falling process. The influence law of the characteristic parameters such as the maximum kinetic energy carried by the rock drop on the pipeline is investigated, and then the natural gas pipeline in the Lancang River crossing section is analyzed by CAESAR II software. Determine the rock drop mass threshold that puts it in a dangerous (or damaged) state. The results of the analysis can provide scientific advice for the prevention of rock fall disaster and decision-making of pipeline safety operation, and can also be used for the design and construction of pipeline engineering with similar geographical conditions as that of Lancang River pipeline. The protection plan of dangerous rock above provides guidance and reference.
【作者单位】：西南石油大学石油与天然气工程学院;中石化西南油气分公司广西采油厂;中国石油西南管道公司;西南油气田公司华油集团凯源燃气西永分公司;
【基金】：“十三五”国家重点专项(2016YFC0802100) 中国工程院咨询研究项目(2015-XZ-37)
【分类号】：TE973.4

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