长江科学院院报 ›› 2013, Vol. 30 ›› Issue (11): 119-123.DOI: 10.3969/j.issn.1001-5485.2013.11.0242013,30(11):119-122

• 安全监测预警专栏 • 上一篇    

分布式光纤加热技术研究

甘孝清1，2a，2b，赵军华2a，2b，李申亭3，李端有2a，2b   

  1. 1.武汉大学水利水电学院，武汉430070；
    2.长江科学院a.工程安全与灾害防治研究所；b.水利部水工程安全与病害防治工程技术研究中心，武汉430010；
    3.河南省南水北调中线工程建设管理局许昌建管处，河南许昌461000
  • 收稿日期:2013-08-23 修回日期:2013-11-07 出版日期:2013-11-30 发布日期:2013-11-07
  • 作者简介:甘孝清(1972-)，男，湖北潜江人，高级工程师，博士研究生，主要从事岩土工程与水工结构安全监测、安全评价工作，(电话)027-82829879(电子信箱)gxqxf@sina.com。
  • 基金资助:
    “十二五”国家科技支撑项目(2011BA10OB00)；水利部948项目(201123)

Research on Heating Technology of Distributed Optical Fiber

GAN Xiao-qing1,2, ZHAO Jun-hua2, LI Shen-ting3, LI Duan-you2   

  1. 1.School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China;
    2.Yangtze River Scientific Research Institute, Wuhan 430010, China;
    3.Xuchang Branch of HenanProvincial Bureau of the Construction and Administration of Middle Route Project of South-to-NorthWater Transfer, Xuchang 461000,China
  • Received:2013-08-23 Revised:2013-11-07 Published:2013-11-30 Online:2013-11-07

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摘要： 分布式光纤越来越多地应用于土石坝(堤)渗流监测中，但光纤的加热时间长、效率低，制约了分布式光纤的应用。首先阐述了加热型分布式光纤光缆的技术要求，研究了加热导体长度、截面面积、电阻与加热时间的定量关系，然后综合考虑加热导体的选材、柔韧性、抗拉强度、电阻率、光纤结构、绝缘等，在尽可能降低成本的基础上提出了相应的解决办法，定制出特种加热型分布式光纤光缆，并将其应用于南水北调中线一期工程渗漏监测中。结果表明，经过定制的加热型分布式光纤光缆能够满足光纤加热的要求，具有较好的市场应用前景。

关键词: 分布式光纤, 加热, 镍铬合金, 光纤结构, 南水北调

Abstract: Distributed optical fiber has been increasingly used in dam (dike) seepage monitoring, but its application is restricted by long heating time and low efficiency. First, the technical requirements of distributed fiber optic cable with heating function are expounded in this paper. Then the quantitative relationship between heating time and other factors, including heating-conductor length, cross-sectional area and resistance, are analyzed. In overall consideration of the material, flexibility, tensile strength, resistivity, optical fiber structure, and insulation of the heating conductor, a special distributed fiber optic cable with heating function was customized with lowest cost and was applied to the leakage monitoring for the first stage project of middle route South-to-North water transfer. The results showed that the customized distributed fiber optic cable meets the heating-requirements, demonstrating good market prospect.

Key words: distributed optical fiber, heating, nickel-chromium alloy, fiber structure, South-to-North water transfer

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