摘要
针对井筒围岩变形监测受采动影响的问题,提出了采用光纤传感技术监测井筒围岩变形的方法.研究了光纤传感器的不同埋入方式、粘结材料以及施工工艺对结构变形监测的影响,结合金川Ⅱ矿区14行风井加固工程,设计并布设了光纤光栅传感监测系统.现场监测结果表明,基于BOTDR的分布式光纤传感技术具有实时性、远程和自动监测围岩变形的优点,可以直观地得到井筒在不同位置的围岩变形分布特征,为井筒围岩变形提供了准确的测试数据.
In order to solve the problem that the deformation monitoring of shaft surrounding rock is affected by mining activities, a method with adopting the optical fiber sensing technology was proposed to monitor the deformation of shaft surrounding rock. The effect of different embedded modes, bonding materials and construction technologies of optical fiber sensor on structural deformation monitoring was studied. In combination with the 14th row shaft reinforcement engineering in Jinchuan No. 2 Mine Area, the optical fiber and grating sensor monitoring system was designed and arranged. The field monitoring results show that the distributed optical fiber sensing technology based on BOTDR has such advantages as real-time performance as well as remote and automatic deformation monitoring of surrounding rock, and can visually obtain the deformation distribution characteristics of surrounding rock at different locations of the shaft, which can provide accurate test data for the deformation of shaft surrounding rock.
出处
《沈阳工业大学学报》
CAS
北大核心
2013年第2期230-235,共6页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(51074003)
国家高科技研究发展计划项目(2008AA062104)
国家“十一五”科技支撑计划项目(2008BAB32B01)
安徽高校省级自然科学研究重点资助项目(KJ2011A080)
高等学校博士学科点专项科研基金新教师类资助项目(20123415120006)
关键词
光纤传感技术
混凝土梁
模拟试验
井筒
监测系统
变形监测
工业试验
optical fiber sensing technology
concrete beam
simulation experiment
shaft
monitoringsystem
deformation monitoring
industrial experiment
