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.

地面运动可能非常有害于在石油和天然气行业用作加拿大关键基础设施中广泛使用的埋入管道。尽管地面移动引起的管道故障并不频繁，但它们通常会导致损害控制和清洁中可能非常昂贵的重大溢出物，从而损害了整个管道的功能，并导致巨大的经济损失，环境问题甚至死亡。当前的技术提供了高级工具，可以识别具有高概率地面运动及其预期方向和幅度的区域。一种实用，先进的缓解措施可以帮助管道行业防止一方面由于地面运动而导致管道破裂，另一方面保护环境和公众。该研究项目旨在为一种新型缓解技术提供基于测试的设计和建模工具，该工具由特殊类型的正性地材料块组成，位于容易因地面运动的区域与管道相邻的区域，以防止由于过度变形而导致管道故障。我们的研究项目重点介绍了四个关键目标：1）使用现场测试评估地面变形下的地理填料增强的埋入管道的全球稳定性和应变响应； 2）开发基于力学的分析方法，用于通过Geobuffer增强的掩埋管道； 3）提出有关埋入管道的监控指南； 4）开发数值建模技术，用于模拟土壤 - 地形 - 管状相互作用。为了实现这些目标，研究团队将执行现场测试并采用高级应变监测技术，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控，建模和设计建议，从而在保护加拿大环境的同时，提高了管道的安全性和可靠性。