CN211601878U - Distributed sensing optical cable long-distance tunnel rapid laying device - Google Patents
Distributed sensing optical cable long-distance tunnel rapid laying device Download PDFInfo
- Publication number
- CN211601878U CN211601878U CN202020204157.7U CN202020204157U CN211601878U CN 211601878 U CN211601878 U CN 211601878U CN 202020204157 U CN202020204157 U CN 202020204157U CN 211601878 U CN211601878 U CN 211601878U
- Authority
- CN
- China
- Prior art keywords
- optical cable
- fixed
- fixed point
- point position
- sensing optical
- 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.)
- Active
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a distributed sensing optical cable long-distance tunnel rapid laying device, which comprises a fixed point type strain sensing optical cable and a matched fixed clamp, wherein the fixed point type strain sensing optical cable comprises an optical cable inner core, an optical cable sheath wraps the outer side of the optical cable inner core, a plurality of fixed point position sleeves are sleeved on the outer side of the optical cable sheath, and a plurality of convex reinforcing rings are annularly arranged on the outer side of the fixed point position sleeves; the matched fixing clamp takes a metal material as a substrate and is in a thin-sheet strip shape, a bending groove is sleeved at the position of a corresponding fixed point in the middle of the matched fixing clamp, an annular groove is formed in the inner wall of the bending groove and extends outwards corresponding to the reinforcement ring, and fixing hole positions are respectively arranged on the periphery of two sides of the matched fixing clamp; aiming at the gradually wide application requirements of the distributed optical fiber sensing technology and the problems of low construction efficiency and high installation requirement in the long-distance tunnel layout, a series of optimization designs are carried out, so that the distributed optical fiber sensing technology is more simple and efficient to apply in the long-distance tunnel engineering.
Description
Technical Field
The utility model belongs to the technical field of civil engineering optical fiber monitoring, concretely relates to device is laid fast in distributing type sensing optical cable long distance tunnel.
Background
The optical fiber sensing technology is a novel sensing detection technology which is developed rapidly in the 20 th 70 th century by virtue of development of optical fiber materials and optical fiber communication technologies, takes optical fibers as media and light as carriers, can realize (quasi-) distributed real-time sensing of long-distance external measured information, and has the advantages of strong electromagnetic resistance and corrosion resistance, portability, dexterity and the like. In recent years, this technology has been applied to various aspects of civil engineering, and has also been widely used in the field of tunnel engineering.
Compared with the traditional conventional sensor, the optical fiber sensing technology has good anti-electromagnetic interference capability, which is particularly important in detection application. In particular, the distributed optical fiber sensing technology can realize sensing, conducting and positioning of physical quantities along the optical fiber. Changes such as strain and temperature must occur before damage such as cracks and leakage occur along the distributed optical fiber, real-time monitoring on a large scale can be carried out on the basis of the distributed optical fiber sensing technology based on the performance, irrationality of artificial experience judgment is avoided, probability of missing measurement and missing report is greatly reduced, timely and accurate important information is provided, and technical advantages are more prominent in the field of long-distance tunnel engineering.
The problems of the current distributed optical fiber sensing monitoring technology include the following points: the adopted optical fiber is fine and low in strength, so that the laying difficulty is high, and the achievement rate is low; the survival rate is guaranteed by adopting the high-strength distributed sensing optical cable, but the optical cable is fixed by adopting a mode of pressing the upper fixing piece and the lower fixing piece, so that the optical cable is easy to be damaged, the requirement on the point position is higher on one hand, and the arrangement efficiency is lower due to the twice fixture fixation; in order to solve the problems, a distributed sensing optical cable long-distance tunnel rapid laying device is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device is laid fast in distributing type sensing optical cable long distance tunnel to distributing type optical fiber sensing technique extensive application demand gradually to and the problem that the efficiency of construction that still exists is low, the installation requires highly in long distance tunnel laying, carry out series optimal design, make distributing type optical fiber technique use more simply, high-efficient in long distance tunnel engineering.
The utility model provides a following technical scheme:
a distributed sensing optical cable long-distance tunnel rapid laying device comprises a fixed-point type strain sensing optical cable and a matched fixing clamp, wherein the fixed-point type strain sensing optical cable comprises an optical cable inner core, an optical cable sheath wraps the outer side of the optical cable inner core, a plurality of fixed-point position sleeves are sleeved on the outer side of the optical cable sheath, and a plurality of convex reinforcing rib rings are annularly arranged on the outer side of each fixed-point position sleeve; supporting mounting fixture uses metal material to make the basement, and is the thin slice banding, supporting mounting fixture middle part corresponds fixed point position cover is equipped with crooked groove, crooked inslot wall corresponds the reinforcement ring extends outward and is equipped with the annular, supporting mounting fixture both sides are equipped with the fixed hole site respectively all around.
Furthermore, the optical cable sheath, the fixed point position sleeve and the reinforcing ring are of an integrally formed structure.
Furthermore, the matched fixing clamp is made of stainless steel.
Furthermore, the matched fixing clamp is covered and installed on the outer side of the fixed point position sleeve, so that the bending groove is matched with the outer wall of the fixed point position sleeve, the annular groove is matched with the reinforcement ring, the fixed hole position is redundant at a distance of 0.5-1mm from the installation position, and the fixed hole position is tightly pressed through a rivet.
The utility model has the advantages that:
the utility model relates to a method is laid fast in distributed sensing optical cable long distance tunnel has following advantage:
1. by adopting a fixed point fixing mode, the test section is the average strain between two adjacent fixed point position sleeves, the large deformation resistance of the optical cable is greatly improved, and the optical cable is prevented from being broken due to local excessive deformation;
2. the fixed point position sleeve of the fixed point type strain sensing optical cable is matched with a matched fixing clamp in an embedded mode, the distance between the fixed point position sleeve and the measured structural body after the matched fixing clamp covers the fixed point position sleeve is 0.5-1mm, and the fixed point position sleeve and the measured structural body are covered and pressed again through a rivet, so that relative slippage between the fixed point position sleeve and the measured structural body is avoided, and the testing accuracy is improved;
3. the matched fixing clamp is directly contacted with the tested structure body and is fixed at one time, so that the arrangement efficiency of the sensing optical cable is greatly improved;
4. the accurate pretension control of the tension meter ensures that the sensing optical cables are in the same strain magnitude, and facilitates the analysis and processing of later data;
5. the utility model is simple in operation, it is relatively lower to the requirement of position levelness, constructor can implement on duty after simply training.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a fixed-point strain sensing optical cable according to the present invention;
FIG. 2 is a schematic structural view of the fixing clamp of the present invention;
FIG. 3 is a schematic flow chart of the installation method of the present invention;
labeled as: 1. the strain sensing optical cable comprises a fixed point type strain sensing optical cable, 11 optical cable inner cores, 12 optical cable sheaths, 13 fixed point position sleeves, 14 reinforcing rib rings, 2 matched fixing clamps, 21 bending grooves, 22 ring grooves, 23 fixing hole positions, 3 tensiometers and 31 soft ropes.
Detailed Description
As shown in fig. 1-2, a distributed sensing optical cable long-distance tunnel rapid layout device comprises a fixed-point type strain sensing optical cable 1 and a matched fixing clamp 2, wherein the fixed-point type strain sensing optical cable 1 comprises an optical cable inner core 11, an optical cable sheath 12 wraps the outer side of the optical cable inner core 11, a plurality of fixed-point position sleeves 13 are sleeved on the outer side of the optical cable sheath 12, and a plurality of convex reinforced rings 14 are annularly arranged on the outer side of each fixed-point position sleeve 13; the matched fixing clamp 2 takes a metal material as a substrate and is in a thin-sheet strip shape, a bending groove 21 is formed in the middle of the matched fixing clamp 2 corresponding to the fixed-point position sleeve 13, a ring groove 22 is formed in the inner wall of the bending groove 21 corresponding to the reinforcing ring 14 and extends outwards, and fixing hole positions 23 are formed in the periphery of two sides of the matched fixing clamp 2 respectively.
Specifically, the optical cable sheath 12, the fixed point position sleeve 13 and the reinforcement ring 14 are of an integrally formed structure; the matched fixed clamp 2 is made of stainless steel; the matched fixing clamp 2 is covered and arranged on the outer side of the fixed point position sleeve 13, so that the bending groove 21 is matched with the outer wall of the fixed point position sleeve 13, the ring groove 22 is matched with the reinforcement ring 14, the fixed hole position 23 has redundancy of 0.5-1mm away from the installation position, and the fixed point position sleeve is tightly pressed by a rivet.
As shown in fig. 3, the method for quickly laying the distributed sensing optical cable long-distance tunnel includes the following steps:
s1, fixed point: according to the designed circuit, marking the fixed point positions of the matched fixed clamp 2 and the fixed hole position 23;
s2, drilling: drilling according to the requirements of the hole depth by using a pistol drill according to the marked fixed point position;
s3, fixing the initial point: determining a first fixed point position, and fixing a fixed point position sleeve 13 by using a rivet and a matched fixing clamp 2;
s4, pre-tensioning and fixing: horizontally pre-stretching an optical cable inner core 11 and an optical cable sheath 12, manually controlling the stretching weight by using a tension meter 3 to keep the stretching weight still, quickly installing a matched fixing clamp 2, then moving the tension meter 3 of the stretching counterweight backwards, installing the next point, and installing the matched fixing clamps 2 at the rest of all fixed point positions by analogy;
s5, detection: after the fixed-point strain sensing optical cable 1 is laid in stages, strain data are collected by adopting a distributed strain demodulator.
Specifically, the tension meter 3 is fixedly connected with the optical cable inner core 11 and the optical cable sheath 12 through the soft rope 31, and the numerical value of the tension meter 3 is manually controlled until the installation of the corresponding fixed point position is finished.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The distributed sensing optical cable long-distance tunnel rapid laying device is characterized by comprising a fixed-point type strain sensing optical cable and a matched fixing clamp, wherein the fixed-point type strain sensing optical cable comprises an optical cable inner core, an optical cable sheath wraps the outer side of the optical cable inner core, a plurality of fixed-point position sleeves are sleeved on the outer side of the optical cable sheath, and a plurality of convex reinforcing rings are annularly arranged on the outer side of each fixed-point position sleeve; supporting mounting fixture uses metal material to make the basement, and is the thin slice banding, supporting mounting fixture middle part corresponds fixed point position cover is equipped with crooked groove, crooked inslot wall corresponds the reinforcement ring extends outward and is equipped with the annular, supporting mounting fixture both sides are equipped with the fixed hole site respectively all around.
2. The device for quickly laying a distributed sensing optical cable long-distance tunnel according to claim 1, wherein the optical cable sheath, the fixed point position sleeve and the reinforcing ring are of an integrally formed structure.
3. The device for rapidly laying the distributed sensing optical cables in the long-distance tunnel according to claim 1, wherein the matched fixing clamp is made of stainless steel.
4. The distributed sensing optical cable long-distance tunnel rapid layout device according to claim 1, wherein the supporting fixing clamp is covered and installed outside the fixed point position sleeve, so that the bending groove is engaged with the outer wall of the fixed point position sleeve, the ring groove is engaged with the reinforcement ring, and the fixing hole has a redundancy of 0.5-1mm from the installation position and is tightly pressed by a rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020204157.7U CN211601878U (en) | 2020-02-24 | 2020-02-24 | Distributed sensing optical cable long-distance tunnel rapid laying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020204157.7U CN211601878U (en) | 2020-02-24 | 2020-02-24 | Distributed sensing optical cable long-distance tunnel rapid laying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211601878U true CN211601878U (en) | 2020-09-29 |
Family
ID=72581467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020204157.7U Active CN211601878U (en) | 2020-02-24 | 2020-02-24 | Distributed sensing optical cable long-distance tunnel rapid laying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211601878U (en) |
-
2020
- 2020-02-24 CN CN202020204157.7U patent/CN211601878U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102162760B (en) | Cable force monitoring device for attached-type stay cable | |
| CN209470718U (en) | A kind of fibre system being preset in shield tunnel | |
| CN212275200U (en) | Large-stroke single-point displacement measuring device for wind tunnel supersonic flow correction | |
| CN105442758B (en) | Wide range FRP embeds steel wire composite fiber intellectual rib and preparation method thereof | |
| CN106969862A (en) | A kind of device for being used to monitor steel strand prestress loss | |
| CN108332884A (en) | Pipeline stress monitoring method in a kind of jacking construction | |
| CN211601878U (en) | Distributed sensing optical cable long-distance tunnel rapid laying device | |
| KR101135513B1 (en) | Optical fiber sensor for measurement of fire and movements | |
| CN111141229A (en) | Distributed sensing optical cable long-distance tunnel rapid laying device and method | |
| CN117451113B (en) | Self-elevating platform spud leg structure health monitoring system based on optical fiber sensing | |
| CN104501732A (en) | Device and method for hydraulic structure deformation distribution type optical fiber monitoring | |
| CN208060053U (en) | A kind of science of bridge building fiber grating pressure ring sensor | |
| CN111174662B (en) | Displacement sensing device and application thereof | |
| CN109540350A (en) | A kind of consideration environment multifactor impact arch bridge suspender tension recognition methods | |
| CN108519060A (en) | Steel bar corrosion DEFORMATION MONITORING SYSTEM and application method based on OFDR technologies | |
| CN103376066B (en) | For monitoring the installation method of the distributed sensing fiber of timber structure strain | |
| CN212458342U (en) | Soil body layering settlement testing device based on multi-point continuous grating | |
| CN218443958U (en) | Tunnel distributed deformation multi-parameter monitoring device | |
| CN114136769A (en) | Carbon fiber plate capable of strain detection based on image processing and use method | |
| CN103556573A (en) | Parallel steel stranded wire stay cable tensioning control method | |
| Yu et al. | Stress and strain monitoring at Tottenham court road station, London, UK | |
| CN111854689A (en) | Soil body layered settlement testing device and method based on multi-point continuous grating | |
| CN216246926U (en) | Clamping device of fixed cable dynamometer | |
| CN219829965U (en) | Shield segment deformation and leakage on-line monitoring device based on distributed optical fibers | |
| CN215114428U (en) | Tunnel segment seam deformation monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |