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首页> 外文会议>ASME international pipeline conference 2008 >Ground Movement Monitoring of Unstable Pipeline Corridors with Fiber Optic Slope Indicators
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Ground Movement Monitoring of Unstable Pipeline Corridors with Fiber Optic Slope Indicators

机译：光纤坡度指示器监测不稳定管道走廊的地面运动

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Spectra Energy Transmission (SET) owns and operates approximately 6,000 kms of raw and sweet natural gas transmission pipelines in northeastern British Columbia and northwestern Alberta. This geographic area is very susceptible to landslides and unstable land mass due principally to the local geological regime. These slope instabilities present long term operational challenges to pipeline companies. Geotechnical pipeline failures are not uncommon and pipeline operators spend significant portions of their operational budgets on geotechnical issues. SET has developed a geotechnical integrity program to take a proactive approach to these geotechnical issues. Ground movement monitoring is a significant component of this integrity program and provides physical data that becomes the backbone of remedial works. SET currently utilizes traditional slope indicators, surface survey monitoring, differential GPS, LiDar and InSar technologies to obtain this ground movement data.rnAs an element of the geotechnical integrity program, SET utilizes fiber optic sensors to monitor the pipeline's reaction to ground movement. After the initial installation of these fiber optic sensors, it was apparent that they could be bonded to almost any structural member. Potential to use the fiber optic sensors to extend the life of a traditional slope indicator was discussed with the sensor manufacturer and six joints of slope indicator casing were fitted with fiber optic sensors. These instrumented joints were then installed across known slide surfaces at various existing monitoring locations. Periodic data collection of both the slope indicator and the fiber optic sensors allowed for ground movement correlation up to the shearing of the slope indicator. It is anticipated that with proper installation and further design improvements from the manufacturer that the fiber optic instrumented slope inclinometers will facilitate ground movement monitoring beyond the life of the traditional slope indicator. This paper discusses the results of the initial trial, what was successful, what lessons were learned, and which pipeline scenarios would benefit from this technology and potential methodologies to monitor ground movement and pipeline bending concurrently.
机译：Spectra Energy Transmission（SET）在不列颠哥伦比亚省东北部和艾伯塔省西北部拥有并经营着约6,000公里的原始和甜天然气传输管道。主要由于当地的地质状况，该地理区域非常容易发生滑坡和不稳定的土地质量。这些斜坡不稳定性给管道公司带来了长期的运营挑战。岩土工程中的管道故障并不少见，并且管道运营商将其大部分运营预算用于岩土工程。 SET开发了一项岩土工程完整性计划，以主动解决这些岩土工程问题。地面运动监控是此完整性计划的重要组成部分，并提供物理数据，这些数据成为补救工作的基础。 SET目前利用传统的坡度指示器，地面测量监测，差分GPS，LiDar和InSar技术来获取该地面运动数据。作为岩土工程完整性计划的一部分，SET利用光纤传感器来监测管道对地面运动的反应。最初安装这些光纤传感器后，很明显它们可以粘结到几乎任何结构构件上。与传感器制造商讨论了使用光纤传感器延长传统坡度指示器使用寿命的可能性，并且坡度指示器外壳的六个接头均装有光纤传感器。然后，将这些仪器化的接头安装在各个现有监视位置的已知滑动表面上。斜率指示器和光纤传感器的定期数据收集允许地面运动相关性直到斜率指示器的剪切。可以预期，通过适当的安装和制造商的进一步设计改进，光纤仪表式倾斜仪将在传统倾斜指示器的使用寿命之外，促进地面运动的监测。本文讨论了初步试验的结果，成功的经验，从中学到的经验教训以及哪些管道方案将从该技术和潜在的方法中受益，这些方法和方法可以同时监测地面运动和管道弯曲。

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