基于管道应变监测的滑坡灾害预警与防治

Early warning and prevention of landslide based on the pipe strain monitoring

因其复杂性、多发性和较强的危害性,滑坡地质灾害是长输油气管道难以回避的重大安全风险之一。作为管道完整性管理的核心技术,管道应变监测和应变分析能够直观、定量地获得地埋工况条件下管体本身的即时应力应变数据,在及时发布承灾体(管道)变形预警的同时,还可以对致灾体(滑坡灾害)的治理过程进行指导和评价灾害治理的实际效果,从而给运营商带来明显的减灾效益。为此,以某天然气管道的受灾管段为例,进一步阐明了管道应变监测的应用方法和在治理中的实际效果,论证了管道应变监测及其分析技术的适用性和可靠性,为长输油气管道地质灾害防御提供了一个新的、有效的技术思路。

Landslide is one of the major inevitable security risks for long-distance oil and gas pipelines due to its complexity,frequent occurrence,and severe hazard.As the core technology in the integrity management,pipeline strain analysis and monitoring can intuitively and quantitatively obtain the data on real-time stress-strain in-situ of the pipe under such landslide condition.On basis of this,early warning of the pipe under strain will be timely sent,at the same time the landslide control process will be guided and its effect will be also evaluated,thus a significant benefit from landslide prevention will be achieved for the pipeline operators.A case history of a certain gas pipeline not only helps demonstrate how the pipe strain monitoring is used for landslide control and what effects the landslide prevention will have,but verifies the adaptability and reliability of the pipe strain monitoring and analysis,providing a new and effective technical means for the prevention of geological hazards threatening the long-distance pipelines.