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

被引：0
作者：
PEI Huafu CUI Peng YIN Jianhua ZHU Honghu CHEN Xiaoqing PEI Laizheng XU Dongsheng Department of Civil and Structural Engineering the Hong Kong Polytechnic University Hong Kong China Institute of Mountain Hazards and Environment CAS Chengdu China School of Earth Sciences and Engineering Nanjing University Nanjing China [1 ,2 ,1 ,3 ,2 ,2 ,1 ,1 ,2 ,610041 ,3 ,210093 ]
机构：
来源：
JournalofMountainScience | 2011年 / 8卷 / 05期
关键词：
Landslide; Debris flow; Fiber Bragg Grating; In-place inclinometer; Column-net system;
D O I：
暂无
中图分类号：
P642.2 [动力地质及工程地质作用];
学科分类号：
0814 ;
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.
引用
收藏
页码：728 / 738
页数：11
相关论文
共 20 条
[1]   Rainfall-triggered debris flows following the Wenchuan earthquake [J].
Tang, C. ;
Zhu, J. ;
Li, W. L. ;
Liang, J. T. .
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2009, 68 (02) :187-194
[2]   Development of Fiber Bragg grating sensors for monitoring civil infrastructure [J].
Moyo, P ;
Brownjohn, JMW ;
Suresh, R ;
Tjin, SC .
ENGINEERING STRUCTURES, 2005, 27 (12) :1828-1834
[3]  
The Wenchuan Earthquake (May 12, 2008), SichuanProvince, China, and resulting geohazards. Cui P,Chen XQ,Zhu YY,Su FH,Han YS,Liu HJ,Zhuang JQ. Natural Hazards . 2011
[4]  
Performancemonitoring of a secant piled wall using distributed fiber opticstrain sensing. Hisham M,Kenichi S,Adam P,Peter JB. Journal of Geotechnical andGeoenvironmental Engineering . 2011
[5]  
Performancemonitoring of a secant piled wall using distributed fiber opticstrain sensing. Hisham M,Kenichi S,Adam P,Peter JB. Journal of Geotechnical andGeoenvironmental Engineering . 2011
[6]  
A debris flowmonitoring system by means of fiber optic interferometers. Lin YL,Lin KH,Chen MH,Lin WW. Proceedings of SPIE, Fiber Optic Sensors and Applications V . 2007
[7]  
Report on emergency investigation of Beichuan CoutyXishan landslide group (debris flow). Sichuan Institute of Geological Engineering Investigation. . 2009
[8]  
Development of the monitoring system for slopedeformations with fiber Bragg grating arrays. Yoshida Y,Kashiwai Y,Murakami E,Ishida S,Hashiguchi N. Proceedings ofSPIE, Smart Structures and Materials 2002: Smart SensorTechnology and Measurement Systems . 2002
[9]  
Life-cycle design of products: a new opportunity for manufacturing enterprises. Alting L. Concurrent Engineering . 1993
[10]  
Photosensitivity in optical fiber waveguides: application to reflection filter fabrication. Hill K O,Fujii Y,Johnson D C,et al. Applied Physics . 1978
12