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Monitoring and Warning of Landslides and Debris Flows Using an Optical Fiber Sensor Technology

ISSN号：1000-4750
期刊名称：《工程力学》
时间：0
分类：P642.22[天文地球—工程地质学;天文地球—地质矿产勘探;天文地球—地质学] TP212[自动化与计算机技术—控制科学与工程;自动化与计算机技术—检测技术与自动化装置]
作者机构：[1]Department of Civil and Structural Engineering, the Hong Kong Polytechnic University, Hong Kong, China, [2]Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China, [3]School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China
相关基金：supported by research grants of The Hong Kong Polytechnic University （Grant Nos. G-YE54 and 1-BB7U）; supported by the State Key Fundamental Research （973） program project （Grant No. 2008CB425802）; supported by a project entitled “Analysis of Geological and Mechanics Reasons Causing Damage of Bridge Structures during Wenchuan Earthquake and Recommendations for Reconstruction” （A/C No. 85G0）

作者： PEI Huafu[1], CUI Peng[2], YIN Jianhua[1], ZHU Honghu[3], CHEN Xiaoqing[2], PEI Laizheng[2]

关键词：光纤传感器, 山体滑坡, 技术监测, 泥石流, 预警, 倾角传感器, 光纤光栅, 传感器系统, Landslide, Debris flow, Fiber Bragg Grating, In-place inclinometer, Column-net system

中文摘要：

山崩和碎片流动是发生在多山或多山的区域的典型 geo 危险。碎片流动可以源于山崩。Geotechnical 乐器学在监视和山崩和结果的碎片流动的警告起一个重要作用。为监视山崩和碎片流动的传统的技术有某些限制。在这个纸罐头介绍的新光纤维传感器克服那些限制。这份报纸论述二个新光纤维传感器系统：一个人是基于的纤维布拉格栅栏(FBG ) 为监视山崩和其它的在里面地方倾斜仪是为监视碎片流动的基于 FBG 的列网系统。这份报纸在实验室论述基于 FBG 的在里面地方倾斜仪的刻度结果。刻度结果在对理论结果的好同意，这被发现。基于 FBG 的在里面地方倾斜仪和基于 FBG 的列网系统在 Weijiagou 山谷在一个地点被安装了， Beichuan 县，中国的四川省。一些初步的结果在纸被获得了并且报导。监视系统和他们的潜在的应用的 FBG 的优点也被介绍。

英文摘要：

Landslides and debris flows are typical geo-hazards which occur in hilly or mountainous regions. Debris flows may result from landslides. Geotechnical instrumentation plays an important role in monitoring and warning of landslides and resulted debris flows. Traditional technologies for monitoring landslides and debris flows have certain limitations. The new optical fiber sensors presented in this paper can overcome those limitations. This paper presents two new optical fiber sensor systems： one is the Fiber Bragg Grating （FBG）-based in-place inclinometer for monitoring landslides and the other is the FBG-based column-net system for monitoring debris flows. This paper presents the calibration results of FBG-based in-place inclinometers in laboratory. It is found that the calibration results are in good agreement with theoretical results. Both the FBG-based in-place inclinometers and the FBG-based column-net system have been installed at a site in Weijiagou valley, Beichuan County, Sichuan Province of China. Some preliminary results have been obtained and reported in the paper. The advantages of the FBG monitoring systems and their potential applications are also presented.

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