Trench-backfill particle size effects on the performance of buried pipelines subject to ground movement

全球能源管道的很大一部分埋在地下，它们延伸到大范围 跨越地形和岩土条件高度可变的地形的距离。岩土灾害 例如地面下沉、山体滑坡或地震引起的横向蔓延可能是造成破坏的主要原因 到输油管道。这些系统性能的任何重大中断通常都会转化为不受欢迎的情况 对社会和环境的影响，以及公用事业公司的成长和价值创造。 减小地面移动过程中管道上的土力是确保管道安全的关键之一 正直。高级土管相互作用研究(ASPIReTM)设施的有限初步研究工作 不列颠哥伦比亚大学(UBC)建议，用相对较大的尺寸填充管道沟渠 (例如，砾石大小)土壤颗粒提供了一种潜在的新颖方法来改善土壤运动产生的力。 埋在地下的管道。由于管道损坏风险降低带来的直接/重大好处 为了提高安全性，这一课题引起了管道行业的极大兴趣。目前对这种土地力的理解 针对管道的减量化方法非常有限。因此，迫切需要进行进一步研究，以 推进这方面的知识。与行业合作者合作，这是一个全面的研究计划 建议使用卑诗省大学最先进的设施对这一主题进行研究。我们的目标是 调查选择对埋地管道产生良好土力的沟渠回填土的价值 受到地面运动的影响。在这项工作中，将培训高素质的人员，从而增加 管道的岩土工程专业知识在加拿大。研究结果将具有直接的高价值。 适用于公司加强管道的完整性和安全性。该项目还将建造一个 与应聘者和行业合作伙伴建立良好的新工作关系。对此的调查 科学上有趣的挑战将导致出版物和潜在的工程设计指南，在 反过来，对整个管道行业做出了贡献。

A very large proportion of the global energy pipelines are buried below ground, and they extend over large distances across terrain that has highly variable topography and geotechnical conditions. Geotechnical hazards such as ground subsidence, landslides, or earthquake-induced lateral spreading can be a major cause of damage to pipelines. Any significant disruption to the performance of these systems often translates into undesirable impacts on the society and environment, as well as the growth and value creation of the utility companies. Reduction of soil forces on pipelines during ground movements is one of the keys to securing pipeline integrity. Limited initial research work at the Advanced Soil Pipe Interaction Research (ASPIReTM) facility at the University of British Columbia (UBC) suggests that filling of pipeline trenches with relatively large size (e.g., gravel size) soil particles provides a potentially novel way of improving forces from soil movements on buried pipelines. Due to the direct/significant benefits arising from the reduced risk of pipeline damage and enhanced safety, this topic is of great interest to the pipeline sector. The current understanding of this soil force reduction approach for pipelines is very limited. As such, there is a strong need to undertake further research to advance knowledge on this front. Working with an industry collaborator, a comprehensive research program on this subject is proposed using the state-of-the-art facilities at the University of BC. The objective is to investigate the value of selecting trench backfills that would result in favorable soil forces on buried pipes subjected to ground movements. Highly qualified personnel will be trained during this work, thus adding to the pipeline geotechnical engineering expertise in Canada. The research findings will be of direct high-value applicability to the Company for the enhancement of pipeline integrity and safety. The project will also build a strong new working relationship with the applicant and an industry collaborator. The investigation on this scientifically interesting challenge would lead to publications and potential engineering design guidelines, in turn, contributing to the pipeline sector at large.