管道地质灾害应力监测系统及其工程应用

Stress monitoring system of pipeline geological disasters and engineering application

  • 摘要: 针对管道因受到地质灾害威胁存在安全隐患甚至发生安全事故的问题,阐释了应力监测系统对于管道地质灾害防治的重要性,进而介绍了应力监测系统的组成与工作原理,对比分析了作为应力监测系统主要组成部分的应变传感器,指出相比电阻测量法及光纤传感技术,振弦式应变传感技术更具优势,同时给出了传感器的布设方式与应变数据计算方法。针对管道应力监测系统在采空区、隧道穿越区、滑坡区及断层区等地质灾害区域防治中应用相对匮乏的现状,重点探讨了典型滑坡区及煤矿采空区管道应力监测系统的应用案例。在滑坡区段管道案例中,基于管道早期预警监测数据量化评估了滑坡灾害对管道的影响程度,给出了需要关注的危险滑坡灾害点;在煤矿采空沉降区管道案例中,验证了应力监测系统在管道应力预警与后续应力释放中的可靠性。最后,总结了管道应力监测系统面临的挑战和未来的发展方向,可为该领域技术研究提供参考。

     

    Abstract: In view of the problems of pipeline safety hazards and even accidents due to geological hazards, this paper explains the importance of stress monitoring system for the prevention and control of pipeline geological disasters, and then introduces the composition and working principle of the stress monitoring system, compares and analyzes the strain sensor which is main component of the stress monitoring system, points out that the vibrating wire strain sensing technology is more advantageous, and gives the layout of the sensor and the calculation method of strain data. In consideration of the lack of application of pipeline stress monitoring system in geological disaster prevention areas such as gob area, tunnel crossing area, landslide area and fault area, this paper discusses the application cases of pipeline stress monitoring system in typical landslide area and coal gob area. It quantitatively assesses the impact degree of landslide disaster on pipelines based on the early warning monitoring data, specifies the dangerous landslide disasters that need attention in the case of pipeline in landslide area, and verifies the reliability of the stress monitoring system in pipeline stress warning and subsequent stress release in the case of coal-mining gob and subsidence area. Finally, the paper summarizes the challenges and future development direction of pipeline stress monitoring system, which can provide reference for technical research in this field.

     

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