Improving Structural Integrity of Buried Pipelines under Ground Movements by Reducing Strain Demand and Advanced Strain Monitoring

通过减少应变需求和先进的应变监测来提高地面运动下埋地管道的结构完整性

• 批准号: 576909-2022
• 负责人: Imanpour, AliA
• 金额: $ 1.97万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748955
• 关键词: Improving; Structural; Integrity; Buried; Pipelines

Ground movements can be very detrimental to buried pipelines that are extensively used in oil and gas industry as key Canadian infrastructure. Although pipeline failures caused by ground movements are not frequent, they often result in major spills that could be extremely costly in damage control and clean, compromising the entire pipeline's functionality and resulting in significant economic losses, environmental issues or even fatalities. Current technologies provide advanced tools to identify areas with high probability of ground movements and their expected direction and magnitude. A practical and advanced mitigation measure can help pipeline industry to prevent pipe rupture due to ground movements in one hand and to protect the environment and the public on the other hand. This research project aims to provide test-based design and modelling tools for a novel mitigation technique, which consists of special type of orthotropic geomaterial blocks placed adjacent to the pipe in areas susceptible to ground movements to prevent pipeline failure due to excessive deformations. Our research project focuses on four key objectives: 1) evaluate using field testing the global stability and strain response of buried pipelines enhanced by Geobuffer under ground deformation; 2) develop mechanics-based analysis method for buried pipelines enhanced by Geobuffer; 3) propose monitoring guidelines for buried pipelines; 4) develop numerical modelling technique for simulating the soil-Geobuffer-pipe interaction. To achieve these aims, the research team will perform field tests and employ advanced strain monitoring techniques, numerical modelling and mechanics-based analyses. We will provide improved monitoring, modelling and design recommendations to pipeline engineers for their daily work, resulting in increased safety and reliability for pipelines while protecting Canadian environment.

地面运动可能对作为加拿大关键基础设施的石油和天然气行业广泛使用的埋地管道非常不利。尽管由地面运动引起的管道故障并不常见，但它们通常会导致重大泄漏，这可能导致损害控制和清洁成本极高，从而损害整个管道的功能，并导致重大经济损失、环境问题甚至死亡。当前的技术提供了先进的工具来识别地面运动可能性较高的区域及其预期方向和幅度。实用且先进的缓解措施可以帮助管道行业一方面防止因地面移动引起的管道破裂，另一方面保护环境和公众。该研究项目旨在为一种新颖的缓解技术提供基于测试的设计和建模工具，该技术由特殊类型的正交各向异性土工材料块组成，这些材料块放置在易受地面运动影响的区域中的管道附近，以防止管道因过度变形而失效。我们的研究项目重点关注四个关键目标：1）通过现场测试评估地面变形下由 Geobuffer 增强的埋地管道的整体稳定性和应变响应； 2）开发基于Geobuffer增强的埋地管道的力学分析方法； 3）提出埋地管道监测指南； 4）开发模拟土壤-地质缓冲区-管道相互作用的数值模拟技术。为了实现这些目标，研究团队将进行现场测试并采用先进的应变监测技术、数值建模和基于力学的分析。我们将为管道工程师的日常工作提供改进的监测、建模和设计建议，从而提高管道的安全性和可靠性，同时保护加拿大的环境。