| 光纤传感网络在边坡稳定监测中的应用研究 |
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| 引用本文： | 丁勇,施斌,崔何亮,索文斌,刘杰. 光纤传感网络在边坡稳定监测中的应用研究[J]. 岩土工程学报, 2005, 27(3): 338-342 |
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| 作者姓名： | 丁勇 施斌 崔何亮 索文斌 刘杰 |
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| 作者单位： | 南京大学光电传感工程监测中心；南京大学光电传感工程监测中心 江苏南京210093；江苏南京210093； |
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| 基金项目： | 国家杰出青年科学基资助金项目(40225006)，国家教育部重点项目资助项目(01086) |
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| 摘 要： | 本文设计了一种新型的光纤传感网络。该网络利用分布式光纤应变监测技术(BOTDR),将光纤(光缆)按一定方式布设成网络,埋入边坡表面以下一定位置,通过监测光纤(光缆)的应变变化,推算出边坡的表面变形。对室内模型进行的加载实验表明,该网络对悬挂重物而引起的表面变形很敏感,且能够精确分析发生异常的区域和应变大小,进而对表面变形状态进行三维模拟。
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| 关 键 词： | BOTDR 边坡监测 光纤传感网络 变形 |
| 文章编号： | 10004548(2005)03-0338-05 |
A fiber optic sensing net applied in slope monitoring based on Brillouin scattering |
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| DING Yong,SHI Bin,CUI He-liang,SUO Wen-bin,LIU Jie. A fiber optic sensing net applied in slope monitoring based on Brillouin scattering[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(3): 338-342 |
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| Authors: | DING Yong SHI Bin CUI He-liang SUO Wen-bin LIU Jie |
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| Affiliation: | Center on optical and electric sensors for engineering monitoring Nanjing University Nanjing 210093 China |
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| Abstract: | A newly developed fiber optic sensing net is presented in this paper. Optical fiber (cable) was weaved into a fiber optic sensing net. The distribution of strain experienced by the net was measured by a BOTDR (Brillouin Optical Time-Domain Reflectometer). The flexible fiber optic sensing net laid on the surface of a slope can deform along with the slope surface. Therefore, the surface deformation of the slope can be monitored by measuring the strain of the fiber optic sensing net. The laboratory experiment showed that the net was sensitive to the surface deformation caused by loading. By analyzing the strain of optical fiber (cable) and the position of loading, a 3-D simulation was made. |
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| Keywords: | BOTDR slope monitoring fiber optic sensing net deformation |
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