CN205140157U - Contact mud -rock flow monitoring devices - Google Patents
Contact mud -rock flow monitoring devices Download PDFInfo
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- CN205140157U CN205140157U CN201520784414.8U CN201520784414U CN205140157U CN 205140157 U CN205140157 U CN 205140157U CN 201520784414 U CN201520784414 U CN 201520784414U CN 205140157 U CN205140157 U CN 205140157U
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Abstract
The utility model discloses a contact mud -rock flow monitoring devices. The product includes column monitoring stake, column monitoring stake is fixed in mud -rock flow channel bottom through its lower region, and the column monitoring stake regional embedding monitor sensor in upper portion, monitor sensor are respectively through signal transmission line way and the hookup of upper center, monitor sensor is the fiber bragg grating sensor ware. The column monitoring stake of this product is reinforced concrete processing, and fiber bragg grating sensor ware fixed mounting is on the reinforcing bar. The fiber bragg grating sensor ware is installed in the tensile stress district of column monitoring stake and/or compressive stress district. The utility model provides a contact mud -rock flow monitoring system. This product has that sensor structure is shock -resistant, the advantage of sensing element strong adaptability, stable performance, the structure of replanting into concrete placement is fixed with the fiber bragg grating sensor ware to the adoption on reinforcing steel bar, make full use of reinforced concrete structure shock resistance advantage and reinforcing steel bar isotropic characteristic, provide good support for the fiber bragg grating sensor ware.
Description
Technical field
The utility model relates to a kind of monitoring device, particularly relates to a kind of contact monitoring device be arranged in rubble flow raceway groove, belongs to rubble flow monitoring technical field.
Background technology
Debris flow control works is for the most effective disaster-proof measures of rubble flow, but it is built and needs a large amount of financial resources, material resources, therefore in debris flow distribution area very widely, every bar debris flow gully builds prevention and cure project and unrealistic.Debris flow early-warning report technology is a kind of typical non-engineering measure, is a kind of cost-effective and the rubble flow of the dead group's wound of group can be avoided to prevent and reduce natural disasters technology.Rubble flow monitoring equipment be debris flow monitoring pre-warning technology rely realize basic means, the design of monitoring equipment, especially meeting rubble flow regional financial resource and material resource condition to occur, meets the design of the monitoring equipment of debris flow gully road landform environmental baseline, is necessary condition mud-stone flow disaster region being realized to effective monitoring and warning.
Whether rubble flow monitoring equipment contacts with debris flow body according to monitoring instrument, can be divided into contactless and contact.Contact monitoring equipment and rubble flow directly come in contact, and its monitoring method is more direct effectively, can effectively reduce and fail to report and rate of false alarm.If but contact monitoring equipment is applied to monitoring and warning is carried out to state of debris flow disasters degree, then under guarantee sensor device can stand the prerequisite of mud-rock-flow-impact, sensing element strong adaptability, stable performance, just must can provide reliable and stable data message.And also must possess sufficient post analysis utility for the rubble flow data message of monitoring and warning, effective rubble flow prediction and warning technology can be committed to.Simultaneously equipment itself also need to meet design processing cost low, advantage is easily installed, just can be applicable to extensively install realize multi-faceted monitoring.The contact rubble flow monitoring equipment that simultaneously can realize these technique effects is still lacked in prior art.
Utility model content
The purpose of this utility model is exactly for the deficiencies in the prior art, provides a kind of and sensor can be protected to destroy from mud-rock-flow-impact and can monitor out the rubble flow monitoring device of rubble flow impact failure harm size.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of contact rubble flow monitoring device, comprises column monitoring stake; Column monitoring stake is fixed in rubble flow raceway groove bottom by lower region thereof, the embedding monitoring sensor of column monitoring stake upper area, and monitoring sensor connects with upper center respectively by signal transmission line; It is characterized in that: described monitoring sensor is fiber-optic grating sensor.
Above-mentioned contact rubble flow monitoring device is arranged in rubble flow raceway groove bottom, and upper area exposes the surperficial also installing optical fibres grating sensor of bottom for measuring rubble flow associated parameter data.Optical fiber core material has photosensitivity, the characteristic that namely refractive index of fibre core changes with light intensity difference under the irradiation of ultraviolet light.Fiber grating utilizes this photosensitivity just, adopts ultraviolet light Writing Technology, by the coherent field of incident light write fibre core, makes core region refractive index generating period change.Fiber grating itself has the features such as high sensitivity, anticorrosive, high temperature resistant and antijamming capability be strong, can be processed into polytype sensor.Above-mentioned contact rubble flow monitoring device can be selected to install dissimilar fiber-optic grating sensor according to the needs of measurement target.
Further, the upper center of above-mentioned contact rubble flow monitoring device comprises data acquisition module, data transmission module, data reception module, data analysis memory module, power module.General design is, data acquisition module comprises the sensor assembly be connected respectively with data transmission module, data reception module comprises fiber Bragg grating (FBG) demodulator, and is connected with fiber-optic grating sensor by data transmission module, and data analysis memory module is connected with data reception module.
Above-mentioned contact rubble flow monitoring device principle of work is, directly come in contact by column monitoring stake and rubble flow, under the impact being subject to mud-rock-flow-impact, the centre wavelength signal of the fiber-optic grating sensor that the inside of monitoring stake is buried underground offsets, by data acquisition module, data transmission module, center wavelength shift signal is sent to data reception module, then wavelength shift signal is kept in data analysis memory module in real time, the last strain sensitive characteristic according to fiber grating, analyzes wavelength signals in data analysis memory module.
Under optimal design, the column monitoring stake of above-mentioned contact rubble flow monitoring device is built by reinforced concrete, and fiber-optic grating sensor is fixedly mounted on reinforcing bar, specifically can adopt welding manner.
Above-mentioned contact rubble flow monitoring device, fiber-optic grating sensor is arranged on Tension Stress Zone and/or the compressive stress district of column monitoring stake.Further, fiber-optic grating sensor comprises strain transducer and/or temperature sensor.Strain transducer is arranged on column monitoring stake Tension Stress Zone, and temperature sensor is arranged on column monitoring stake compressive stress district.In this optimal design, earth pillar shape monitoring stake, when being subject to impacting, there will be the neutral surface of answering vanishing in its structural plane.As reinforced concrete structure, its neutral surface occurs on the plane of symmetry in the axial direction.It is generally the wavelength shift that just can be easier to observe under tension state that the strain sensitive characteristic of fiber grating determines fiber-optic grating sensor, and therefore strain transducer is arranged on column monitoring stake Tension Stress Zone and has sensitive monitoring effect.Generally speaking, Tension Stress Zone is the region between column monitoring stake internal neutral face and upstream face.Fiber-optic grating sensor has strain and temperature sensitive properties, therefore, needs to eliminate ambient temperature change and the offset error of fiber-optic grating sensor centre wavelength that causes.Temperature sensor is arranged on compressive stress district can ensure that while realizing temperature monitoring sensor causes center wavelength shift from the impact of stretching strain, and the real impact for the sensor removal temperature in stretching strain district is given security.
Further, fiber-optic grating sensor monitors stake axial array along column, in particular equidistant axial array.
Further, column monitoring stake lower area is fixed on rubble flow raceway groove bottom basement rock place, to ensure that it is firmly installed.
Based on above-mentioned contact rubble flow monitoring device, the utility model also provides a kind of contact debris flow monitoring system, be monitoring terminal structure by multiple contact rubble flow monitoring device, monitor same characteristic locations simultaneously, as the rubble flow correlation parameter along rubble flow channel laterally and/or longitudinal surface, its technical scheme is as follows:
A kind of contact debris flow monitoring system, it is characterized in that: comprise at least two column monitoring stakes, column monitoring stake by lower region thereof along rubble flow channel laterally and/or be vertically fixed in rubble flow raceway groove bottom, column monitoring stake upper area installing optical fibres grating sensor, fiber-optic grating sensor connects with upper center respectively by signal transmission line; Described column monitoring stake is reinforced concrete processing, and fiber-optic grating sensor to be fixedly mounted on reinforcing bar and to be arranged on Tension Stress Zone and/or the compressive stress district of column monitoring stake.
Compared with prior art, the invention has the beneficial effects as follows: (1) contact rubble flow monitoring device adopts fiber-optic grating sensor, has the advantage that sensor device can stand mud-rock-flow-impact, sensing element strong adaptability, stable performance.(2) fiber-optic grating sensor is fixed on the structure of replanting into concreting on bar material by employing is that fiber-optic grating sensor provides good support.(3) problem of fiber-optic grating sensor concrete installation region in monitoring device is solved.(4) apparatus structure is simple, with low cost, is suitable for the disaster district widespread use at Debris Flow.(5) fiber-optic grating sensor kind is many, is beneficial to the expansion of monitoring device function.
Accompanying drawing explanation
Fig. 1-1 is contact rubble flow monitoring device structural representation (arrow represents mud-rock flow movement direction).
Fig. 1-2 is sensor fixing structure schematic diagram (arrow represents mud-rock flow movement direction).
Fig. 2-1 is contact debris flow monitoring system structural representation (arrow represents rubble flow channel laterally/longitudinal direction).
Figure notation in accompanying drawing is respectively:
1 column monitoring stake 11 reinforcing bar 12 Tension Stress Zone 13 compressive stress district 14 neutral surface
2 upper center 3 fiber-optic grating sensor 31 strain transducer 32 temperature sensors
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is further described.
Embodiment one
As shown in Fig. 1-1 ~ Fig. 1-2, process a kind of contact rubble flow monitoring device.
Fig. 1-1 is contact rubble flow monitoring device structural representation (arrow represents mud-rock flow movement direction).Contact rubble flow monitoring device, comprises column monitoring stake 1; Column monitoring stake 1 is fixed in rubble flow raceway groove bottom by lower region thereof, the embedding monitoring sensor of column monitoring stake 1 upper area, and monitoring sensor connects with upper center 2 respectively by signal transmission line; Monitoring sensor is fiber-optic grating sensor 3.Column monitoring stake 1 lower area is fixed on rubble flow raceway groove bottom basement rock place.
Upper center 2 comprises data acquisition module, data transmission module, data reception module, data analysis memory module, power module.Data acquisition module comprises the sensor assembly be connected respectively with data transmission module, data reception module comprises fiber Bragg grating (FBG) demodulator, and be connected with fiber-optic grating sensor 3 by data transmission module, data analysis memory module is connected with data reception module.
Fig. 1-2 is sensor fixing structure schematic diagram (arrow represents mud-rock flow movement direction).Column monitoring stake 1 is reinforced concrete processing, and fiber-optic grating sensor 3 is fixedly mounted on reinforcing bar 11.Fiber-optic grating sensor 3 is along column monitoring stake 1 axial array.Fiber-optic grating sensor 3 is arranged on Tension Stress Zone 12 and/or the compressive stress district 13 of column monitoring stake 1.Fiber-optic grating sensor 3 comprises strain transducer 31 and/or temperature sensor 32.Wherein, strain transducer 31 is arranged on column monitoring stake 1 Tension Stress Zone 12, and temperature sensor 32 is arranged on column monitoring stake 1 compressive stress district 13.
Embodiment two
As shown in Fig. 2-1, Fig. 1-2, process a kind of contact debris flow monitoring system.
Contact debris flow monitoring system is based on embodiment one contact rubble flow monitoring device, and itself and embodiment one something in common no longer repeat.
Fig. 2-1 is contact debris flow monitoring system structural representation (arrow represents rubble flow channel laterally/longitudinal direction).Contact debris flow monitoring system comprises at least two column monitoring stakes 1, column monitoring stake 1 by lower region thereof along rubble flow channel laterally and/or be vertically fixed in rubble flow raceway groove bottom, column monitoring stake 1 upper area installing optical fibres grating sensor 3, fiber-optic grating sensor 3 connects with upper center 2 respectively by signal transmission line.As shown in Figure 1-2, column monitoring stake 1 is reinforced concrete processing, and fiber-optic grating sensor 3 to be fixedly mounted on reinforcing bar 11 and to be arranged on Tension Stress Zone 12 and/or the compressive stress district 13 of column monitoring stake 1.
Claims (10)
1. a contact rubble flow monitoring device, comprises column monitoring stake (1); Column monitoring stake (1) is fixed in rubble flow raceway groove bottom by lower region thereof, the embedding monitoring sensor of column monitoring stake (1) upper area, monitoring sensor connects with upper center (2) respectively by signal transmission line; It is characterized in that: described monitoring sensor is fiber-optic grating sensor (3).
2. device according to claim 1, is characterized in that: described upper center (2) comprises data acquisition module (21), data transmission module (22), data reception module (23), data analysis memory module (24), power module (25).
3. device according to claim 2, is characterized in that: described data acquisition module (21) comprises the sensor assembly (221) be connected respectively with data transmission module (22); Described data reception module (23) comprises fiber Bragg grating (FBG) demodulator, and is connected with fiber-optic grating sensor (3) by data transmission module (22); Data analysis memory module (24) is connected with data reception module (23).
4. according to the arbitrary described device of claims 1 to 3, it is characterized in that: described column monitoring stake (1) is reinforced concrete processing, and fiber-optic grating sensor (3) is fixedly mounted on reinforcing bar (11).
5. device according to claim 4, is characterized in that: described fiber-optic grating sensor (3) is arranged on Tension Stress Zone (12) and/or compressive stress district (13) of column monitoring stake (1).
6. device according to claim 5, is characterized in that: described fiber-optic grating sensor (3) comprises strain transducer (31) and/or temperature sensor (32).
7. device according to claim 6, it is characterized in that: described strain transducer (31) is arranged on column monitoring stake (1) Tension Stress Zone (12), described temperature sensor (32) is arranged on column monitoring stake (1) compressive stress district (13).
8., according to the arbitrary described device of claim 1,2,3,5,6,7, it is characterized in that: described fiber-optic grating sensor (3) is along column monitoring stake (1) axial array.
9. device according to claim 8, is characterized in that: described column monitoring stake (1) lower area is fixed on rubble flow raceway groove bottom basement rock place.
10. a contact debris flow monitoring system, it is characterized in that: comprise at least two columns monitoring stake (1), column monitoring stake (1) by lower region thereof along rubble flow channel laterally and/or be vertically fixed in rubble flow raceway groove bottom, column monitoring stake (1) upper area installing optical fibres grating sensor (3), fiber-optic grating sensor (3) connects with upper center (2) respectively by signal transmission line; Described column monitoring stake (1) is reinforced concrete processing, and fiber-optic grating sensor (3) is fixedly mounted on reinforcing bar (11) and goes up and the Tension Stress Zone (12) and/or compressive stress district (13) that are arranged on column monitoring stake (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520784414.8U CN205140157U (en) | 2015-10-10 | 2015-10-10 | Contact mud -rock flow monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520784414.8U CN205140157U (en) | 2015-10-10 | 2015-10-10 | Contact mud -rock flow monitoring devices |
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| Publication Number | Publication Date |
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| CN205140157U true CN205140157U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520784414.8U Expired - Fee Related CN205140157U (en) | 2015-10-10 | 2015-10-10 | Contact mud -rock flow monitoring devices |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017406A (en) * | 2020-08-26 | 2020-12-01 | 四川大学 | Debris flow monitoring method and system based on temperature sensing |
| CN112102588A (en) * | 2020-09-22 | 2020-12-18 | 温州大学 | Self-powered highway side slope monitoring and early warning system |
-
2015
- 2015-10-10 CN CN201520784414.8U patent/CN205140157U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017406A (en) * | 2020-08-26 | 2020-12-01 | 四川大学 | Debris flow monitoring method and system based on temperature sensing |
| CN112102588A (en) * | 2020-09-22 | 2020-12-18 | 温州大学 | Self-powered highway side slope monitoring and early warning system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20171010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |