用于巷道沉降变形监测的光纤锯齿状布设技术与原理

doi:10.16285/j.rsm.2017.S1.011

›› 2017, Vol. 38 ›› Issue (S1): 96-102.doi: 10.16285/j.rsm.2017.S1.011

用于巷道沉降变形监测的光纤锯齿状布设技术与原理

侯公羽^1,2，谢冰冰¹，江玉生¹，殷姝雅¹，韩育琛¹

1.中国矿业大学（北京）力学与建筑工程学院，北京 100083；2. 新疆工程学院采矿工程系，新疆乌鲁木齐 830091

收稿日期:2017-03-29 出版日期:2017-06-22 发布日期:2018-06-05
通讯作者: 谢冰冰，男，1991年生，博士研究生，主要从事岩石力学及隧道健康监测等方面的研究工作。E-mail: XIE817824@163.com E-mail: hgyht@126.com
作者简介:侯公羽，男，1965生，博士，教授，博士生导师，主要从事岩土工程、岩石力学方面的教学与研究工作。
基金资助:
中央在京高校重大成果转化项目（No.ZDZH20141141301）；国家自然科学基金委员会与神华集团有限责任公司联合资助重点项目(No.U1261212，No.U1361210)。

Sawtooth layout technology and principle of fiber used in deformation monitoring of roadway subsidence

HOU Gong-yu^1,2, XIE Bing-bing¹, JIANG Yu-sheng¹, YIN Shu-ya¹, HAN Yu-chen¹

1. School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China; 2. School of Mining Engineering, Xinjiang Institute of Engineering, Urumchi, Xinjiang 830091, China

Received:2017-03-29 Online:2017-06-22 Published:2018-06-05
Supported by:
This work was supported by the Central University Major Achievement Transformation Project in Beijing (ZDZH20141141301) and the National Natural Science Fund Committee and Shenhua Group Co., Ltd. Jointly Funded Key Projects (U1261212，U1361210).

摘要/Abstract

摘要： 矿山巷道、交通隧道等工程的顶板沉降变形监测是不可缺少的安全保障手段之一，现有的直线分布式光纤布设技术监测巷道沉降变形存在灵敏度较低的问题。将光纤沿巷道顶板的纵向铅垂平面布设成锯齿形状，构建相应的计算模型，给出具体的布设参数，获得了基于AV6419型号的光纤应变测试仪的监测精度和量测范围。试验结果表明，将光纤由直线式布设改变为锯齿状布设时不仅满足分布式光纤传感技术对于提取大范围测量场分布式信息能力的要求，而且通过巷道纵向分布式光纤的布设实现了监测巷道径向变形（如顶板沉降）的目的。计算模型监测的灵敏度相比于直线式有大幅度提高，为基于BOTDR技术的分布式光纤传感技术的应用与推广提供了新的方法和思路。

关键词: 分布式, 锯齿状布设, 沉降监测, BOTDR技术

Abstract: Nowadays the deformation monitoring of roof subsidence of mine roadway, tunnel, etc., is one of the indispensable means for engineering security. The existing linear distributed fiber optic monitoring technology is low sensitivity. Based on the distributed optical fiber sensing technology, further research is made on the form of the layout of the fiber. We put the fiber along the longitudinal vertical plane layout of roadway roof into sawtooth shape, build the corresponding calculation model, give the layout parameters and obtain the monitoring accuracy and the measurement range(AV6419). The test results show that when we change the linear layout into sawtooth layout it can not only meet the requirements of large-scale field measurement of distributed information capabilities of distributed optical fiber sensing technology, but also realize the purpose of monitoring the radial deformation of the roadway (such as roof settlement) through the arrangement of axially distributed optical fiber in roadway. Besides, this model’s sensitivity will have a substantial increase, so as to provide a new method and ideas for application and promotion of distributed optical fiber sensing technology based on BOTDR.

Key words: distributed, sawtooth layout, settlement monitoring, BOTDR technology

中图分类号:

TN473.1

侯公羽，谢冰冰，江玉生，殷姝雅，韩育琛,. 用于巷道沉降变形监测的光纤锯齿状布设技术与原理[J]. , 2017, 38(S1): 96-102.

HOU Gong-yu, XIE Bing-bing, JIANG Yu-sheng, YIN Shu-ya, HAN Yu-chen,. Sawtooth layout technology and principle of fiber used in deformation monitoring of roadway subsidence[J]. , 2017, 38(S1): 96-102.

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用于巷道沉降变形监测的光纤锯齿状布设技术与原理

Sawtooth layout technology and principle of fiber used in deformation monitoring of roadway subsidence

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