CN201177679Y - Dam safety sensing optic cable - Google Patents
Dam safety sensing optic cable Download PDFInfo
- Publication number
- CN201177679Y CN201177679Y CNU2008200548957U CN200820054895U CN201177679Y CN 201177679 Y CN201177679 Y CN 201177679Y CN U2008200548957 U CNU2008200548957 U CN U2008200548957U CN 200820054895 U CN200820054895 U CN 200820054895U CN 201177679 Y CN201177679 Y CN 201177679Y
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- Prior art keywords
- dam
- model
- utility
- optic cable
- sensing optic
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- Expired - Fee Related
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- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 239000013307 optical fiber Substances 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 2
- 238000007711 solidification Methods 0.000 abstract 2
- 230000008023 solidification Effects 0.000 abstract 2
- 238000005253 cladding Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229920000271 Kevlar® Polymers 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004761 kevlar Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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Abstract
The utility model relates to a signal sensing medium, in particular to a dam safety sensing cable capable of monitoring the concrete solidification condition and the leakage condition of a dam in a real-time manner and prolonging the service life of the sensing cable. The sensing cable comprises a sensing optical fiber, and a packing layer, a reinforcement layer and a sheath sequentially cladding the optical fiber, wherein two wires are arranged in the packing layer. The sensing cable can monitor the dam concrete solidification condition in the dam construction process and can detect leakage of the dam in time, thereby preventing the occurrence of flood, ensuring the national property safety and the life safety of the people, and prolonging the service life of the sensing cable.
Description
Technical field
The utility model relates to a kind of sensing media, especially relates to a kind of can solidifying with the seepage of dam situation dam concrete rapidly and monitors in real time, and prolong the utility model dam safety sensing optic cable in serviceable life.
Background technology
Sensing optic cable can be used for monitoring dam concrete and solidifies and the seepage of dam situation.In the work progress of dam, sensing optic cable is embedded in the dam, utilize concrete when building undesired condensing and the abnormal temperature that produces is monitored the situation of condensing of dam concrete in real time; In the dam construction process and after being completed, for a long time dam is carried out temperature monitoring,,, thereby can monitor whether seepage takes place in the dam so the heat loss is very fast relatively because dam has the place of seepage that current are just arranged.Sensing optic cable is used for monitoring the above-mentioned condition of dam, for the safety that ensures dam very important meaning is arranged.
Prior art is made up of sheath, reinforcing sleeve, packed layer, sensor fibre, its structure is that sensor fibre wraps packed layer, reinforcing sleeve, sheath outward successively, and the manufacturing materials that adopts of packed layer, reinforcing sleeve, sheath is respectively Kevlar (Kevlar), and to spin the model that synthetic fibre yarn, stainless-steel tube, U.S. SpeChem company produce be HF548-45 high flame resistance, low smoke bittern-free flame-proof material.Its principle of work is: come detection of temperature data by the sensor fibre that is arranged in the packed layer, temperature data is transferred to is arranged on the indoor data processing main frame of monitoring then, thereby realize the safety monitoring to the dam scene.It is as follows that the sensing optic cable of prior art is used in the defective and the deficiency that exist in the dam safety monitoring application: 1, there is not heating arrangement, and poor to dam crack seepage resolution characteristic; 2, do not have water blocking layer, the water capacity easily is penetrated into optical cable inside, can cause optical cable to lose efficacy year in and year out; 3, a built-in sensor fibre will be if this root fibercuts can't be carried out the temperature data transmission.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of overcome prior art defective and deficiency, can promptly solidify with the seepage of dam situation dam concrete to carry out the real-time monitoring in scene and can improve seepage of dam monitoring dynamics and prolongation the utility model dam safety sensing optic cable in serviceable life.The technical scheme that its technical matters of solving the utility model adopts is: a kind of dam safety sensing optic cable, it comprises and wraps packed layer, reinforcing sleeve, sheath on the sensor fibre successively, is provided with 2 leads in the packed layer.Technical problem to be solved in the utility model also can further be solved by following technical solution: sensor fibre is 2, is provided with reinforcement between 2 leads and/or 2 sensor fibres; Fill water blocking layer between reinforcing sleeve and the sheath; Water blocking layer is that Zhengzhou Brunswick cable material water-proof material company limited produces, model is that ZSD50 meets the waterstop that water can expand rapidly.The diameter of the lead in the utility model is 1～3mm.Reinforcement in the utility model adopts FRP (Fiberglass Reinforce Plastic glass fiber reinforced plastics) material, is used for resisting the pulling force that sensing optic cable is embedded in the dam to be born; Reinforcing sleeve adopts stainless steel material to make, and is used for resisting the pressure that optical cable is embedded in the dam to be born; Sheath adopts polythene material to make, and is used for protecting the utility model the damage that produces in order to avoid be subjected to the erosion of dam concrete.Rapid expansion can take place in the water blocking layer in the utility model when meeting water, invade the utility model inside to stop steam.The utility model can successively lay in the dam construction process, and monitor concrete adiabatic condensation temperature in the dam construction process by the utility model, guarantee that dam concrete condenses normally, and temperature data is preserved for the dam concrete situation of condensing being done long-term analysis and research use.Sensor fibre in the utility model is the commercially available prod, and sensor fibre has the acrylates coating outward.The utility model adopts 62.5/125 μ m multimode sensor fibre, and bandwidth range is 〉=400MHZ@850nm, 〉=1000MHZ@1300nm, attenuation range is≤3.0dB@850nm ,≤0.8dB@1300nm.The utility model is owing to adopt technique scheme, can in the work progress of dam, monitor the dam concrete situation of condensing, can in time find the seepage of dam again, prevented the generation of floods, ensure national property and the people's life security, and prolonged serviceable life of the present utility model.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment of the utility model the utility model is described in further detail:
Fig. 1, Fig. 2, Fig. 3, Fig. 4 are cross-sectional structure synoptic diagram of the present utility model.
With reference to Fig. 4.Be provided with sensor fibre 2, lead 3, reinforcement 4 in the utility model packed layer 1, packed layer 1 outer reinforcing sleeve 5, water blocking layer 6, the sheath 7 of wrapping successively.
Embodiment
Embodiment 1: with reference to Fig. 1.Present embodiment adopts 1 sensor fibre, and makes the length of 2 leads in the utility model be enough to form certain (heating) internal resistance when operating voltage of its two ends effect.(can successively) lays the utility model in the dam construction process, and can monitor dam structure inside by the utility model after dam is completed has ne-leakage.At first with an end short circuit of 2 leads, on the other end of 2 leads, act on an operating voltage (20～30V DC voltage) then, and the internal resistance of complying with 2 leads makes 2 leads generate heat, make temperature of the present utility model be elevated to uniform temperature simultaneously, cut off the power supply then thermal data of the present utility model sent on the terminal surveying instrument that is arranged on the indoor data processing main frame and measure, if seepage place is arranged in the dam, because there have the local heat of water to run off to be fast, so the temperature that on measurement temperature curve of the present utility model, just can see seepage part relatively other not the temperature of seepage place obviously descend, thereby realize safety monitoring function, so just can detect dam structure inside at an easy rate whether seepage takes place dam.
Embodiment 2: with reference to Fig. 2.Present embodiment has been set up 1 sensor fibre and reinforcement on the basis of embodiment 1, and reinforcement is arranged on the position of a kind of sensor fibre of embodiment, 2 sensor fibres are arranged on the both sides of reinforcement, when 1 sensor fibre wherein break down or situation about rupturing under still can realize safety monitoring to dam, and can improve compressive strength of the present utility model.
Embodiment 3: with reference to Fig. 3.Present embodiment is being filled water blocking layer on the basis of embodiment 1 between reinforcing sleeve and sheath, so can in the safety monitoring function that realizes dam, can stop moisture attacks, prolonged serviceable life of the present utility model, to reach better implementation result of the present utility model.
Embodiment 4: with reference to Fig. 4.Present embodiment is being filled water blocking layer on the basis of embodiment 2 between reinforcing sleeve and sheath, so can in the safety monitoring function that realizes dam, can stop moisture attacks, prolonged serviceable life of the present utility model, to reach better implementation result of the present utility model.
Claims (4)
1. dam safety sensing optic cable, it comprises and wraps packed layer, reinforcing sleeve, sheath on the sensor fibre successively, it is characterized in that: be provided with 2 leads in the packed layer.
2. a kind of dam safety sensing optic cable according to claim 1 is characterized in that: sensor fibre is 2, is provided with reinforcement between 2 leads and/or 2 sensor fibres.
3. a kind of dam safety sensing optic cable according to claim 1 and 2 is characterized in that: fill water blocking layer between reinforcing sleeve and the sheath.
4. a kind of dam safety sensing optic cable according to claim 3 is characterized in that: water blocking layer is that Zhengzhou Brunswick cable material water-proof material company limited produces, model is the ZSD50 waterstop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200548957U CN201177679Y (en) | 2008-01-18 | 2008-01-18 | Dam safety sensing optic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200548957U CN201177679Y (en) | 2008-01-18 | 2008-01-18 | Dam safety sensing optic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177679Y true CN201177679Y (en) | 2009-01-07 |
Family
ID=40217700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200548957U Expired - Fee Related CN201177679Y (en) | 2008-01-18 | 2008-01-18 | Dam safety sensing optic cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177679Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439239A (en) * | 2013-09-04 | 2013-12-11 | 南京大学 | Distributed rock and soil mass seepage velocity monitoring method and system |
| CN105606315A (en) * | 2016-03-14 | 2016-05-25 | 四川大学 | Distributed fiber sensing technical scheme and system for monitoring of concrete panel dam seepage |
| CN105739039A (en) * | 2016-05-10 | 2016-07-06 | 河海大学 | Sensing optical cable for monitoring seepage performance and using method thereof |
-
2008
- 2008-01-18 CN CNU2008200548957U patent/CN201177679Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439239A (en) * | 2013-09-04 | 2013-12-11 | 南京大学 | Distributed rock and soil mass seepage velocity monitoring method and system |
| CN103439239B (en) * | 2013-09-04 | 2015-12-23 | 南京大学 | A kind of Rock And Soil seepage flow rate distribution formula monitoring method and system |
| CN105606315A (en) * | 2016-03-14 | 2016-05-25 | 四川大学 | Distributed fiber sensing technical scheme and system for monitoring of concrete panel dam seepage |
| CN105739039A (en) * | 2016-05-10 | 2016-07-06 | 河海大学 | Sensing optical cable for monitoring seepage performance and using method thereof |
| CN105739039B (en) * | 2016-05-10 | 2018-06-19 | 河海大学 | A kind of observed seepage behavior monitoring sensing optic cable and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: SHANGHAI HUAWEI AT Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: SHANGHAI HUAWEI AT Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20130118 |