Enhanced performance of buried pipelines subjected to ground movements

增强埋地管道承受地面运动的性能

基本信息

批准号：
536414-2018
负责人：
Imanpour, Ali
金额：
$ 4.81万
依托单位：
University of Alberta
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699195
关键词：
Enhanced performance buried pipelines subjected

项目摘要

Ground movements can be very detrimental to buried pipelines that are extensively used in oil and gas industry. 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 ups. 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 investigates a novel mitigation method to prevent pipeline failure due to ground movements using a special type of orthotropic buffers employed in areas susceptible to ground movements. Our research project focuses on four key objectives: 1) evaluate, using numerical finite element simulations, the influence buffering elements on the stability response of buried pipelines under the displacement caused by ground movements; 2) assess, by means of field testing, the stability response of buried pipelines enhanced by buffering; 3) develop a validated numerical dataset to predict the local and global response of buried pipelines under compressive forces; and 4) propose design formulations and modeling techniques to simulate the pipe response under various combinations of ground movement. To achieve these aims, the research team will perform field tests and employ numerical modelling. We will also provide improved modeling and design recommendations to practitioners for their daily work, resulting in increased safety and reliability for pipelines. The proposed solution can remarkably increase pipe capacity to sustain large magnitudes of displacements caused by natural forces such as earthquakes, slope failures, slope creeps, fault slips, etc.

地面运动对石油和天然气工业中广泛使用的埋地管道非常不利。尽管由地面移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理成本极高。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。该研究项目研究了一种新颖的缓解方法，使用在易受地面运动影响的地区使用的特殊类型的正交各向异性缓冲器来防止由于地面运动而导致的管道故障。我们的研究项目重点关注四个关键目标：1）利用数值有限元模拟评估缓冲元件在地面运动引起的位移下对埋地管道稳定性响应的影响； 2）通过现场试验评估缓冲增强埋地管道的稳定性响应； 3）开发一个经过验证的数值数据集来预测埋地管道在压力下的局部和整体响应； 4) 提出设计公式和建模技术来模拟各种地面运动组合下的管道响应。为了实现这些目标，研究团队将进行现场测试并采用数值建模。我们还将为从业人员的日常工作提供改进的建模和设计建议，从而提高管道的安全性和可靠性。所提出的解决方案可以显着增加管道容量，以承受由地震、边坡破坏、边坡蠕变、断层滑移等自然力引起的大量位移。