一种利用分布式光传感技术的变电站地基沉降监测方案

王伟; 胡金磊; 王文博; 张哲民; 张坤; 华奎

光学与光电技术, 2019, 17 (3): 83, 网络出版: 2019-07-20

一种利用分布式光传感技术的变电站地基沉降监测方案

Substation Foundation Settlement Monitoring Scheme Using Distributed Optical Sensing Technology

论文大纲

王伟 ¹胡金磊 ¹王文博 ¹张哲民 ²张坤 ²华奎 ²

作者单位

¹ 广东电网有限责任公司清远供电局, 广东清远 511500

² 武汉康普常青软件技术股份有限公司, 湖北武汉 430073

摘要

为了解决某些建设在地势低洼地区变电站的地基沉降问题, 利用分布式光纤传感技术, 提出了一种变电站地基沉降监测方案。在介绍分布式光纤传感技术的基础上, 研究了抗干扰能力强的应力光缆作为感应元件。分别介绍了地表变形监测光缆、深部变形监测光缆、基桩沉降监测光缆和连接光缆的布设方式。最后以两种类型的变电站作为试点应用对象, 对监测结果分析表明, 由监测定位图中的波峰和波谷位置可以判断光缆松弛程度, 进而确定应变方向和幅值, 提出的监测方案可以很好地满足变电站地基沉降监测的需要。可以为变电站地基沉降防治技术的进步提供参考和辅助。

Abstract

In order to solve the problem of foundation settlement of some substations built in low-lying areas, in this paper, a distributed fiber optic sensing technology is used to propose a substation foundation settlement monitoring scheme. Based on the introduction of distributed optical fiber sensing technology, the stress cable with strong anti-interference ability is studied as the sensing element. The layout methods of surface deformation monitoring optical cable, deep deformation monitoring optical cable, pile settlement monitoring optical cable and connecting optical cable are introduced respectively. Finally, two types of substations are used as pilot applications. The analysis of monitoring results show that from the position of the peaks and troughs in the monitoring map, the degree of slack in the cable could be judged, and the strain direction and amplitude could be determined, therefore the monitoring scheme of this paper could well meet the needs of substation foundation settlement monitoring. The research in this paper could provide reference and assistance for the improvement of substation foundation settlement prevention technology.

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王伟, 胡金磊, 王文博, 张哲民, 张坤, 华奎. 一种利用分布式光传感技术的变电站地基沉降监测方案[J]. 光学与光电技术, 2019, 17(3): 83. WANG Wei, HU Jin-lei, WANG Wen-bo, ZHANG Zhe-min, ZHANG Kun, HUA Kui. Substation Foundation Settlement Monitoring Scheme Using Distributed Optical Sensing Technology[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2019, 17(3): 83.

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