Distributed fiber optic sensing technology and system for monitoring of deformation of high arch dam

A technology of distributed optical fiber and deformation monitoring, which is applied in the direction of measuring devices, optical devices, instruments, etc., and can solve problems such as difficulty in adapting to hyperbolic dam shapes
CN105890537AInactive Publication Date: 2016-08-24SICHUAN UNIV
2 Cites 26 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2016-08-24
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a distributed fiber optic sensing technology and a system for monitoring of deformation of a high arch dam, which relate to the field of crossing of a dam safety monitoring technology and a fiber optic sensing technology and are used for overcoming the defect of a conventional means for the monitoring of the deformation of the high arch dam and filling the blank of using distributed fiber optic sensing for the monitoring of the deformation of a dome dam. Aiming at the characteristics and the difficulties of the dome dam, two kinds of unique curved fiber optic packaging structures, namely, fiber optic monitoring panels in a weakly curved beam type and a micro-bending beam type, are provided. Based on error analysis and curved beam height control-camber beam segmentation construction, excellent performance, high reliability, long service life, convenience and practicability of monitoring of fiber optic deformation are ensured. A convenient and practical layout installation mode in an arch dam and a gallery, a vertical shaft and a footrill of a dam foundation is provided, so that online remote metering on multi-dimensional and large-scale time-space broad coverage of three components (radial horizontal displacement, tangential horizontal displacement and vertical displacement) of internal deformation of the arch dam, the dam foundation and a dam abutment is realized. An optical demodulation instrument is multifunctional and can be used for metering concrete temperature, reservoir water temperature, slit level in front of a dam, reservoir sedimentation and the like.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] Distributed Fiber Optic Sensing Technology and System for Monitoring of Deformation of High Arch Dam technical field

[0002] The invention belongs to the intersection field of dam safety monitoring technology and optical fiber sensing technology, and particularly relates to a technical scheme and system for distributed optical fiber sensing monitoring of high arch dam deformation, which can realize the dam body and abutment of hyperbolic arch dams Multi-dimension-on-line monitoring with wide temporal and spatial coverage for distributed fiber optic sensing of internal deformation of dam foundations. Background technique

[0003] The conventional method for horizontal displacement monitoring of arch dams is mainly the vertical line method, which is set in a typical dam section in the dam body, and the single-section line is about 50m long; the vertical displacement monitoring mostly uses static leveling. The deformation monitoring of the dam foundation and abutment is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More