CN201311275Y - Tunnel periphery surface displacement transducer - Google Patents
Tunnel periphery surface displacement transducer Download PDFInfo
- Publication number
- CN201311275Y CN201311275Y CNU2008202233612U CN200820223361U CN201311275Y CN 201311275 Y CN201311275 Y CN 201311275Y CN U2008202233612 U CNU2008202233612 U CN U2008202233612U CN 200820223361 U CN200820223361 U CN 200820223361U CN 201311275 Y CN201311275 Y CN 201311275Y
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- CN
- China
- Prior art keywords
- displacement transducer
- monitoring
- tunnel
- optical fiber
- displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Excavating Of Shafts Or Tunnels (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A tunnel periphery surface displacement transducer belongs to the technical field of tunnel construction monitoring, which is characterized in that the displacement transducer is an optical fiber type displacement transducer which comprises a strip base plate and optical fiber cables which are fixed on the upper surface and the lower surface of the base plate along the length direction of the strip base plate. The tunnel periphery surface displacement transducer has the advantages of difficulty in damaging monitoring points, simple structure and low cost owing to totally adopting communication optical fibers as measuring point components and transmission medium, and free restrictions to the testing environment, such as the magnetic field, vibration, water, wind, visibility, particle content in air of monitoring places. The displacement transducer not only can be applied in the construction monitoring or the operation monitoring of the periphery surface displacement of tunnels and underground projects in railways, highroads, hydroelectricity, subways, municipal works and the like, but also can be applied in the surface relative displacement monitoring of other structural objects.
Description
Technical field
The utility model relates to a kind of displacement transducer that the tunnel perimeter surface displacement is used of monitoring.Belong to tunnel perimeter surface displacement monitoring technical field.
Background technology
At present the tunnel perimeter surface displacement monitor mainly contains the measurement chi that convergence gauge uses, the displacement transducer of serving as by the retroreflective sheeting that is marked with "+" word target center that total powerstation tunnel perimeter deflection measurement system uses, and the shortcoming of these displacement transducers is to require the blocking-up tunnel traffic when measuring, avoid vibrations, measuring point protection difficulty, can't realize real-time monitoring.
The Ba Saite collective system is a kind of tunnel section convergence automatic measurer that U.S. SLOPE INDICATOR company releases, its displacement transducer is made up of the some groups of electrolyte obliquity sensors that are hinged with long and short rod member, the long and short rod member that is hinged by cover head and the tail during use is installed around section to be measured hole wall, constitutes a ring.After tunnel perimeter surface is subjected to displacement, can drive the length rod member and rotate, measure its corner, utilize these corners and length of connecting rod to calculate the tunnel perimeter surface displacement by obliquity sensor.The major defect of this displacement transducer of being made up of the some groups of electrolyte obliquity sensors that are hinged with long and short rod member is destruction or the influence construction that is subject to construction and excavation explosion and construction machinery; In order to reduce the taking of space, the quantity of its bar must be abundant, and this can increase the cumulative errors and the cost of number of sensors, periphery surface displacement simultaneously greatly.
The utility model content
The purpose of this utility model is in order to overcome the above-mentioned shortcoming of prior art, provides a kind of measuring point to be difficult for the displacement transducer for tunnel perimeter surface of destroyed, constructing tunnel operation and the mutually noninterfere of surface displacement monitoring results.
Displacement transducer for tunnel perimeter surface of the present utility model is the optical fiber type displacement transducer, is made of bar shaped substrate, the upper and lower lip-deep optical fiber cable that is installed in substrate along the length direction of bar shaped substrate.
During use this bar shaped substrate is fixed on the tunnel perimeter wall along tunnel cross-section.When tunnel perimeter surface is subjected to displacement, then can drive the bar shaped substrate that is fixed on the tunnel perimeter surface and produce distortion, the bar shaped substrate deformation causes the optical fiber cable generation strain on its upper and lower surface.The strain value of this optical fiber cable is then by supporting fiber data collector real-time automatic collecting, and these Monitoring Data are preserved or send to the fibre strain data processor, by data processor these strain values are carried out the changing value that analytical calculation just can obtain relative position between any 2 of the substrate in conjunction with substrate thickness through the software program of special use, the changing value of substrate each point is exactly the shift value of the tunnel perimeter that is in contact with it.
Compared with the aforementioned existing similar products, the beneficial effects of the utility model are: measuring point is difficult for destroyed, all adopts communication optical fiber to be measuring point element and transmission medium, and simple in structure, cost is low; Test environment requirements without limits such as magnetic field, vibrations, water, wind, visibility, airborne fraction of particle to the monitoring place.Remove the construction monitoring or the operation monitoring of the periphery surface displacement of the tunnel can be used for railway, highway, water power, subway, municipal administration etc. and underground works, also can be used for the surperficial relative displacement monitoring of other works.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the left view of Fig. 1
Fig. 3 is the vertical view of Fig. 1
Fig. 4 is the structural representation that is provided with the displacement transducer of protective seam
Fig. 5 is the synoptic diagram of installing and using of the present utility model
Embodiment
Referring to 1～3, this displacement transducer for tunnel perimeter surface is made of bar shaped substrate 1, the upper and lower lip-deep optical fiber cable 2 that is installed in substrate along the length direction of bar shaped substrate.3 for installing through hole among the figure.Optical fiber cable 2 can be bonded on the bar shaped substrate with bonding agent.Certainly, also can adopt some other not influence the normal strain of optical fiber cable and other fixed form of transmission signals.
Referring to 4, be not destroyed the layer protective layer 4 of on optical fiber cable, can also screening in order to guarantee measuring point better.Protective seam can be rubber sheet or plastic sheet.Can also utilize concrete in the constructing tunnel process to form the protective seam of optical fiber cable to tunnel surface spraying.
Optical fiber cable can respectively be arranged two, upper and lowerly respectively stays one as standby.
During use this bar shaped substrate is arranged along tunnel cross-section,, with expansion bolt 5 or alternate manner substrate is fixed on the tunnel perimeter wall 6 at a certain distance referring to Fig. 5.Optical fiber cable 2 and supporting fiber data collector 7 are joined, just the strain data of optical fiber can be sent to the shift value that fibre strain data processor 8 obtains the tunnel perimeter of correspondence.
Claims (4)
1, displacement transducer for tunnel perimeter surface is characterized in that described displacement transducer is the optical fiber type displacement transducer, and this optical fiber type displacement transducer is made of bar shaped substrate, the upper and lower lip-deep optical fiber cable that is installed in substrate along the length direction of bar shaped substrate.
2, displacement transducer for tunnel perimeter surface as claimed in claim 1 is characterized in that being provided with a protective seam on described optical fiber cable.
3, displacement transducer for tunnel perimeter surface as claimed in claim 2 is characterized in that described protective seam is a rubber sheet.
4, displacement transducer for tunnel perimeter surface as claimed in claim 2 is characterized in that described protective seam is a plastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202233612U CN201311275Y (en) | 2008-12-12 | 2008-12-12 | Tunnel periphery surface displacement transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202233612U CN201311275Y (en) | 2008-12-12 | 2008-12-12 | Tunnel periphery surface displacement transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311275Y true CN201311275Y (en) | 2009-09-16 |
Family
ID=41108531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202233612U Expired - Fee Related CN201311275Y (en) | 2008-12-12 | 2008-12-12 | Tunnel periphery surface displacement transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311275Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134294A (en) * | 2015-08-30 | 2015-12-09 | 上海复旦智能监控成套设备有限公司 | High-reliability distributed optical fiber subway tunnel safety monitoring system |
| CN113112766A (en) * | 2021-04-06 | 2021-07-13 | 国网甘肃省电力公司酒泉供电公司 | Optical fiber intelligent early warning system |
-
2008
- 2008-12-12 CN CNU2008202233612U patent/CN201311275Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134294A (en) * | 2015-08-30 | 2015-12-09 | 上海复旦智能监控成套设备有限公司 | High-reliability distributed optical fiber subway tunnel safety monitoring system |
| CN113112766A (en) * | 2021-04-06 | 2021-07-13 | 国网甘肃省电力公司酒泉供电公司 | Optical fiber intelligent early warning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20131212 |