土工基础

›› 2013, Vol. 27 ›› Issue (6): 134-138.

• 工程实录 • 上一篇    

分布式光纤光栅传感监测在盾构穿越蓄水库中的应用研究

郭余根   

  1. (中铁十六局集团有限公司，北京 100018)
  • 收稿日期:2013-10-09 出版日期:2013-12-20 发布日期:2013-12-21
  • 作者简介:郭余根,高级工程师，研究方向为岩土工程。

Application of the Distributed Fiber Bragg Grating Sensors in safety monitoring for a reservoir while a subway tunnel is crossing below

Guo Yugen   

  1. （China Railway 16TH Bureau Group Co., Ltd. Beijing 100018)
  • Received:2013-10-09 Online:2013-12-20 Published:2013-12-21

摘要： 由于蓄水库的特性，使用传统方法直接监测底板、侧壁的开裂和渗漏情况短期内往往无法满足监测的时效性、准确性和分布性要求。本文采用分布式光纤光栅传感器进行盾构穿越期间蓄水库侧壁应变的不间断监测，并对监测结果进行分析，为盾构穿越既有构筑物提供一种实时可靠的监测方法，为盾构施工安全提供保障。

关键词: 光纤光栅, 安全监测, 应变监测, 蓄水库

Abstract: Due to the specialization of the reservoir, it is difficult to meet timely, accurate and distributed requirements for directly monitoring of cracks and leakages in baseboard and walls by some traditional methods. This paper proposes a new idea to measure strains using the distributed Fiber Bragg Grating(FBG) sensors, and analyze the results. Monitoring results show that the FBG sensors is suitable for walls strain monitoring in reservoirs. And the method to conjecture strains in baseboard by measuring strains along walls is feasible. The initial success is regarded to be helpful for the next crossing of the right subway tunnel.

Key words: Fiber Bragg Grating, safety monitoring, strain monitoring, reservoir