CN1229622C - Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body - Google Patents
Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body Download PDFInfo
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- CN1229622C CN1229622C CN 200410012677 CN200410012677A CN1229622C CN 1229622 C CN1229622 C CN 1229622C CN 200410012677 CN200410012677 CN 200410012677 CN 200410012677 A CN200410012677 A CN 200410012677A CN 1229622 C CN1229622 C CN 1229622C
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Abstract
The present invention relates to a measuring system for the faceplate deflection or the internal horizontal and vertical deformation of a dam body, which is composed of a monitoring device, a towing device and a monitoring pipeline buried in the internal position of the faceplate or the dam body, wherein the monitoring device is a movable device in the monitoring pipeline. Moreover, the monitoring device comprises measurement equipment, such as a high precision fiber gyro inertial guidance instrument, etc., and a trolley for loading the measurement equipment. The towing device is a device which can make the monitoring device stably moved in the pipeline. The monitoring pipeline is a pipeline which has rigidity and retractility, and moreover, the internal wall of the pipeline is smooth. Because the faceplate deflection and the horizontal and vertical deformation of the existing dam body formed by stacking concrete faceplates has a maximum value as high as 3 m, a plurality of pipelines are used and are connected by corrugated pipes which can be moderately deformed to form the monitoring pipeline of the present invention so that the monitoring pipeline can meet the actual engineered requirement of the dam body formed by stacking the concrete faceplates. Furthermore, the design of the inner wall of the pipeline is matched with the trolley, and consequently, the measuring device can stably move in the pipeline. Thus, the massive, continuous and high accuracy measurement work of the faceplate deflection and the internal horizontal and vertical deformation of the dam body can be accomplished.
Description
Technical field
The present invention relates to measurement mechanism in a kind of civil engineering work, the system of the outside of buildings and interior of building level and vertical deformation in a kind of specifically civil engineering work, especially a kind of measuring system that is used for Hydraulic and Hydro-Power Engineering dam body panel deflection or dam body inner horizontal and vertical deformation.
Background technology
Understand dam practice of construction quality in order to grasp on the one hand in the rock construction, prepare necessary panel and dam body practical distortion data for the dam final acceptance of construction on the other hand, provide certain help for from now on rock design and construction simultaneously, require needs to carry out the monitoring of a large amount of construction time and runtime according to relevant specification of country.Because the restriction of technology and experience, present rock panel deflection still adopt fixed or the slidingtype tiltmeter is monitored, the classic method of drawing bracing cable formula horizontal displacement meter and water-pipe type settlement instrument monitoring dam body inner horizontal and perpendicular displacement is still adopted in the internal modification monitoring.Show by practical engineering experience, there are many weak points in above-mentioned traditional monitoring method, therefore along with the continuous development of new technology, adopt other advanced more technology such as photoelectric technology to carry out above-mentioned monitoring and become possibility, optical fiber sensing technology is used widely in other industry at present, especially the former fibre optic gyroscope that is used for the military project aspect now also can be applied to civilian installation, domestic had some units to carry out this respect applied research, as " detecting the method and the device of Underwater Engineering structural deformation based on fiber-optics gyroscope " (number of patent application: 02147772) disclose method and the device that a kind of fiber-optics gyroscope detects the Underwater Engineering structural deformation.Above-mentioned this patented claim technology is to utilize the characteristic of fibre optic gyroscope diagonal angle speed sensitive, the traction optical fiber gyroscope moves along measurand, the angular velocity that records is carried out integration obtain angle, calculate the movement locus of package unit then by formula, just the shape of measurand.The result that records to twice compares, and just can obtain the deformation values of measurand.Its device comprises that fibre optic gyroscope, signal receive storage unit, computer interface, linear velocity trans, shell.Though the above-mentioned technology of applying for a patent provides method and used measuring device part with optical fibre gyro technology for detection Underwater Engineering structural deformation, because the measurement of dam body panel and dam body inside also relates in panel and dam reasonable Arrangement pipeline how, to technical requirement, the monitoring piping laying technology of the performance of monitoring pipeline and shape and how to guarantee to make measurement mechanism in the monitoring pipeline, steadily to move and correction voluntarily, thereby finish all complicated factors such as whole measuring process, therefore need a whole set of complete measurement mechanism to finish.
The technical problem to be solved in the present invention is: provide a cover complete, utilize fiber-optics gyroscope to detect the outside of buildings in the civil engineering work and the device of interior of building level and vertical deformation, the measuring system of dam body panel deflection or dam body inner horizontal and vertical deformation in especially a kind of Hydraulic and Hydro-Power Engineering.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the measuring system of a kind of dam body panel deflection or dam body inner horizontal and vertical deformation, by monitoring device, draw-gear be embedded in panel or the monitoring pipeline of dam body inside is formed; Monitoring device is the device that moves in the monitoring pipeline, comprises high-precision optical fiber gyro inertial navigation instrument and loads its dolly; Draw-gear is the equipment that monitoring device is steadily moved in pipeline, comprises guy cable pulley, collision prevention girders, fixed beam, guide link and haulage cable; Fixed beam vertically is installed in from 25～50mm place, pipeline top, guy cable pulley is installed in monitoring pipeline top, collision prevention girders is horizontally installed in before the guy cable pulley of top, and guide link is installed in the inner-walls of duct top, and haulage cable penetrates guide link and top guy cable pulley; The monitoring pipeline is the pipeline with rigidity and retractility, its inner wall smooth, internal diameter Ф 300～500mm.
Described monitoring device also comprises the magnetic inductor that is loaded in the dolly.
The high-precision optical fiber gyro inertial navigation instrument of described monitoring device is become with bank of digital signal processors by 2～3 high-precision optical fiber gyro instrument, 2～3 quartz accelerometers, and fibre optic gyroscope links to each other with digital signal processor with quartzy accelerator.
The dolly of described monitoring device is made up of car body, side roll, bottom roller, draw ring, cushion pad and contact reset switch, side roll and bottom roller are installed in car body both sides and car body bottom respectively, draw ring is contained in the car body two ends, reset switch and cushion pad are packaged at the car body front end, and cushion pad is positioned at car body front end both sides.
Described guy cable pulley is a sister block, is made up of three sister blocks, and a pulley is installed on the fixed beam of top, and two are fixed on pipeline inwall up and down in addition.
Described draw-gear also comprises the windlass that places the monitoring pipe ends, and windlass links to each other with haulage cable.
The top of described monitoring pipeline is provided with the foreign matter collection tube.
Described monitoring pipeline is for adopting roundy and straight steel pipe and the hybrid junction pipe of the sylphon seal connection with certain rigidity and retractility or the corrugated tube that connects with the sylphon seal with certain rigidity and retractility, and its inwall is trackless or rail type; When described pipeline is rail type, the fluted formula track in its inner-walls of duct both sides.
Described pipeline outer wall is equipped with permanent magnet ring more than 1.
When described pipeline was trackless, inner-walls of duct was provided with the shelf of control location, and shelf is contained in inner-walls of duct top.
Monitoring pipeline of the present invention adopts corrugated tube or corrugated tube and roundy and straight steel pipe or the synthetic round straight tube material hybrid junction of high strength chemistry with rigidity and retractility, be embedded in panel or the dam body, combine closely and be out of shape with measured body, can comparatively accurately reflect panel deflection and dam body vertical deformation situation; For measurement and positioning and compensation need, equidistantly or not equidistantly add a permanent magnetic iron hoop every 20～50 meters, for the magnetic inductor sensing acknowledge(ment) signal on the measurement dolly in the pipeline outside; Ripple inwall at corrugated conduit is filled with the material with retractility, makes inner-walls of duct smooth, and inside is trackless or rail type, and the measurement mechanism that adapts to different designs steadily moves therein; The indexing unit that comprises guy cable pulley, collision prevention girders, fixed beam, guide link, haulage cable and windlass that monitoring device is steadily moved in pipeline, three bottom guy cable pulley are installed in duct bottom, diameter Ф 〉=80mm, pulley adopts sister block, and definitely wire rope can not be shifted.Three pulleys, one is installed in the bottom fixedly on the girder steel, and all the other two are fixed on inwall about the pipeline, this structure, the angle of wire rope and pulley can prevent effectively that all greater than 90 wire rope is stuck by pulley.Crashproof girder steel is horizontally installed in before the guy cable pulley of top, high 80mm, thick 20mm; when travelling car glides the bottom; cushion pad on the dolly bumps with it, and the contact reset switch is in contact with it, and is mainly used in protection measurement mechanism and bottom guy cable pulley.Bottom fixedly girder steel is mainly used in and fixes a guy cable pulley, vertically be installed in from monitoring 300mm place, pipeline top, wide 50mm, thick 20mm, guide link are installed in the inner-walls of duct top, external diameter Ф≤30mm, in pipeline, install 1 every about 10m, perhaps every segment pipe is installed 1 end to end, and guide link guarantees that the upper edge wire rope can not drop, and influence or obstruction dolly move.Whole measuring channel length is long, and can not keep in repair and change, and has foreign matter to fall into wherein unavoidably in use, for carrying out smoothly of guaranteeing to measure, has increased the bottom foreign matter collection tube of the about 500mm of a segment length on monitoring pipeline top.Wire rope just penetrates guide link and bottom guy cable pulley when construction, measurement mechanism comes bivector traction to be displaced in the monitoring pipeline by wire rope; Windlass places the tail end of measuring channel, and requirement can two-wayly be rotated, can speed governing, and rotating speed is steady, and haulage cable moves thereby drive dolly.
Measurement mechanism is the core of this measuring system, and measurement mechanism movement requirement in pipeline is steady, makes high-precision optical fiber gyro inertial navigation instrument go out the situation of concrete rock panel deflection and dam body inner horizontal and vertical deformation by correct measurement.
Adopt high-precision optical fiber gyro inertial navigation instrument, form by 2～3 high-precision optical fiber gyro instrument, 2～3 quartz accelerometers and digital signal processor (DSP) etc., high-precision optical fiber gyro instrument and quartz accelerometer are passed to digital signal processor with the angular velocity signal and the linear acceleration signal that record, digital signal processor data can be passed to on-the-spot Computer Processing or store after more as calculated machine calculate and handle, thereby draw deformation data.
The fibre optic gyroscope technical indicator is:
Random walk:
Offset drift: 0.1 °/h;
Constant multiplier stability :≤100ppm;
Angular velocity measurement scope: 〉=± 60 °/s;
Operating temperature range: 0～+ 50 ℃;
The quartz accelerometer technical indicator is:
Minimum measured value: 10
-3G;
Measurement range: ± 100g;
Operating temperature range: 0～+ 50 ℃;
The characteristic of DSP signal processor:
TMS320C32 dsp chip 40M dominant frequency;
The outside non-volatile nvSRAM of 1M effectively preserves test data;
RS422 serial line interface: 115200 baud rates;
The high-speed a/d sampling;
Measuring accuracy :≤10mm.
With 2-3 fibre optic gyroscope is one group, forms colourful attitude measuring system, revising the deviation of walking in the monitoring pipeline, thereby improves measuring accuracy.
Dolly body diameter Ф 250～400mm of the present invention, high 220～380mm, long 300～500mm, wall thickness 5～15mm, roller is installed in side and bottom, and draw ring, cushion pad, reset switch and electric connector are installed in front and back, inner high-precision optical fiber gyro inertial navigation instrument and the magnetic inductor installed.Magnetic inductor is passed to the DSP digital signal processor with the horizontal location signal that records.
The dolly main body structure determines according to the pipe interior organization plan, and when inner-walls of duct when being trackless, the weight of used dolly bottom roller carrying dolly, side roll is mainly avoided the effect of dolly swing; This moment, the bottom roller was directly installed on the car body bottom.When inner-walls of duct is trackless, but inner-walls of duct top is when being equipped with the control grid spacer, and grid spacer plays control carriage walking attitude and acts on stably; Or when inner-walls of duct was rail, the inner-walls of duct both sides were provided with the groove type track, and the side roll of dolly walks in wherein, playing control carriage walking attitude acts on stably, the bottom roller plays a supportive role, and at this moment, the bottom roller is connected in the car body bottom by spring.
Side roll is installed in dolly body diameter maximum, and two sides are respectively adorned 2～3.Side roll diameter Ф 30～60mm, the outer rubberite layer that wraps can reduce when rolling and jolt, and the middle ball bearing that adopts rotates smoothly, reduces friction.
All be connected between side roll and dolly, guarantee that dolly in moving process, does not produce and rocks, increase stability, if internal diameter of the pipeline has subtle change, because spring action does not influence steadily moving of dolly with spring.
The bottom roller is directly installed on the car body bottom or adopts spring to be connected in the car body bottom; Each 2～3 of front and back, angle 50～70 degree between two rollers, the outer bag of bottom roller rubberite layer, the centre is a ball bearing, its diameter Ф 30～60mm.
The wire rope draw ring is fixed on both sides, dolly body front and back; be used to connect wire rope; draw ring is from dolly body bottom 50～80mm; thereby guarantee that measurement mechanism is at the mobile rollover phenomenon that do not occur; cushion pad is installed in the dolly forward, central part, about each one, adopt high strength, elastic caoutchouc; when dolly is rolled to duct bottom and crashproof girder steel play damping effect when bumping, the measurement mechanism of protection walking.
When dolly was rolled to the pipeline top, contact reset switch and crashproof girder steel came in contact, and make system reset, and measurement restarts.
Also can increase a camera and illuminating lamp, can check the pipe interior situation, avoid measuring the risk that dolly blindly enters pipeline, can carry out three-dimensional imaging to situation in the pipeline and measure at the dolly front end.Also camera and illuminating lamp can be arranged separately in one independently on the dolly, before formal the measurement, utilize the dolly of band camera to carry out earlier to understandings of making a video recording of pipe interior situation, with the safety of assurance measurement dolly.
In sum, because the panel deflection of Concrete Face Rockfill Dam and dam body inner horizontal and vertical deformation amount maximal value are many in 2 meters at present, the monitoring pipeline adopts more piece pipeline and the corrugated tube by can the appropriateness distortion to connect, so can adapt to the actual demand of Concrete Face Rockfill Dam engineering.And the supporting design of inner-walls of duct and dolly, measurement mechanism is steadily moved in pipeline, can finish panel deflection and the dam body inner horizontal and the vertical deformation surveying work of a large amount of, successional and degree of precision well.
Measurement mechanism of the present invention also can be applicable to the buildings of civil engineering work class (as Engineerings such as Hydraulic and Hydro-Power Engineering, road and bridge engineering, worker China Democratic National Construction Association engineering, underground works, Underwater Engineering and municipal works) and the collimation and the trajectory measurement on basis, also promptly carries out the outside and inner level and the vertical deformation monitoring of buildings of civil engineering work class.
Following structure the drawings and the specific embodiments further specify advantage of the present invention.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention
Fig. 2 monitors the pipeline structural representation for the present invention
Fig. 3 is a measurement mechanism structural representation of the present invention
Fig. 4 is pipeline configuration synoptic diagram of the present invention (a hybrid junction pipe racks magnet ring)
Fig. 5 pipeline configuration synoptic diagram of the present invention (ripple pipe racks magnet ring)
Fig. 6 is an inner-walls of duct structural representation of the present invention (trackless)
Fig. 7 is inner-walls of duct structural representation of the present invention (trackless have dividing plate)
Fig. 8 is an inner-walls of duct structural representation of the present invention (rail type)
Fig. 9 is the present invention bottom guy cable pulley scheme of installation
Figure 10 is a fibre optic gyroscope structural representation of the present invention
Embodiment
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 6, Fig. 9, shown in Figure 10, the measuring system of dam body panel deflection or dam body inner horizontal and vertical deformation is made up of monitoring device 5, draw-gear and the monitoring pipelines 3 that are embedded in the dam face slab 2.
Monitoring device 5 is the device that moves in monitoring pipeline 3, is made up of magnetic inductor 11, built-in power 22, high-precision optical fiber gyro inertial navigation instrument and the dolly that loads it; High-precision optical fiber gyro inertial navigation instrument becomes 14 by 13,2 quartz accelerometers 12 of 2 high-precision optical fiber gyro instrument with bank of digital signal processors, fibre optic gyroscope 13 links to each other with digital signal processor 14 with quartzy accelerator 12, fibre optic gyroscope 13 and quartzy accelerator 12 and magnetic inductor 11 are passed to digital signal processor 14 with the angular velocity signal, linear velocity signal and the horizontal location signal that record, carry out data analysis by computing machine again.
The fibre optic gyroscope technical indicator is:
Random walk:
Offset drift: 0.1 °/h;
Constant multiplier stability :≤100ppm;
Angular velocity measurement scope: 〉=± 60 °/s;
Operating temperature range: 0～+ 50 ℃;
The quartz accelerometer technical indicator is:
Minimum measured value: 10
-3G;
Measurement range: ± 100g;
Operating temperature range: 0～+ 50 ℃;
The characteristic of DSP signal processing circuit:
TMS320C32 dsp chip 40M dominant frequency;
The outside non-volatile nvSRAM of 1M effectively preserves test data;
RS422 serial line interface: 115200 baud rates;
The high-speed a/d sampling;
Measuring accuracy :≤10mm.
Draw-gear is the equipment that monitoring device 5 is steadily moved in monitoring pipeline 3, comprises guy cable pulley 7, crashproof girder steel 6, fixedly girder steel 9, guide link 10 and haulage cable 28; Fixedly girder steel 9 vertically is installed in from 25mm place, pipeline 3 top, and three guy cable pulley 10 are installed in pipeline 3 tops, diameter Ф=80mm, and pulley 7 adopts sister block, guarantees that wire rope 28 can not be shifted.Three 7, one on pulleys are installed in the top fixedly on the girder steel 9, and all the other two are fixed on pipeline inwall about in the of 3, this structure, and the angle of wire rope and pulley all greater than 90 degree, can prevent effectively that wire rope is stuck by pulley.Crashproof girder steel 6 is horizontally installed in before the top guy cable pulley 7, and guide link 10 is installed in pipeline 3 inwall tops, and haulage cable 28 penetrates guide link 6 and top guy cable pulley 7.
The dolly of monitoring device 5 is made up of car body 30, side roll 21, bottom roller 20, draw ring 18, cushion pad 19 and contact reset switch 17; Car body 12 diameter Ф 250mm, high 220mm, long 400mm, wall thickness 10mm, 4 side rolls 21 are installed in car body 30 both sides by spring, and side roll 21 is installed in car body 30 diameter maximums, and two sides are respectively adorned two.Side roll 20 diameter Ф=30mm, the outer rubberite layer that wraps can reduce when rolling and jolt, and the middle ball bearing that adopts rotates smoothly, reduces friction.Be connected with spring between side roll 21 and car body, guarantee that dolly in moving process, does not produce and rocks, increase stability, if internal diameter of the pipeline has subtle change, because spring action does not influence moving of dolly.4 bottom rollers 20 are directly installed on the car body bottom, roller diameter Ф=30mm, and the outer rubberite layer that wraps can reduce when rolling and jolt, and the middle ball bearing that adopts rotates smoothly, reduces friction.
Wire rope draw ring 18 is fixed on car body 30 rear and front ends; be used to connect wire rope 28; draw ring 18 is from car body 30 bottom 50mm; thereby guarantee that measurement mechanism 5 is at the mobile rollover phenomenon that do not occur; cushion pad 19 is installed in car body 30 forward, central part, about each one, adopt high strength, elastic caoutchouc; when dolly is rolled to duct bottom and crashproof girder steel play damping effect when bumping, the protection measurement mechanism.
When dolly was rolled to duct bottom, contact reset switch 17 came in contact with crashproof girder steel, makes system reset, and measurement restarts.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 8, Fig. 9, shown in Figure 10, the present invention is made up of monitoring device 5, draw-gear and the monitoring pipeline 3 that is embedded in panel.
Monitoring device 5 is the device that moves in monitoring pipeline 3, is made up of magnetic inductor 11, built-in power 22, high-precision optical fiber gyro inertial navigation instrument and the dolly that loads it; High-precision optical fiber gyro inertial navigation instrument becomes 14 by 13,2 quartz accelerometers 12 of 2 high-precision optical fiber gyro instrument with bank of digital signal processors, fibre optic gyroscope 13 links to each other with digital signal processor 14 with quartzy accelerator 12, fibre optic gyroscope 13 and quartzy accelerator 12 and magnetic inductor 11 are passed to digital signal processor 14 with the angular velocity signal, linear velocity signal and the horizontal location signal that record, carry out data analysis by computing machine again.
The fibre optic gyroscope technical indicator is:
Random walk:
Offset drift: 0.1 °/h;
Constant multiplier stability :≤100ppm;
Angular velocity measurement scope: 〉=± 60 °/s;
Operating temperature range: 0～+ 50 ℃;
The quartz accelerometer technical indicator is:
Minimum measured value: 10
-3G;
Measurement range: ± 100g;
Operating temperature range: 0～+ 50 ℃;
The characteristic of DSP signal processing circuit:
TMS320C32 dsp chip 40M dominant frequency;
The outside non-volatile nvSRAM of 1M effectively preserves test data;
RS422 serial line interface: 115200 baud rates;
The high-speed a/d sampling;
Measuring accuracy :≤10mm.
Draw-gear is the equipment that monitoring device is steadily moved in pipeline, comprises guy cable pulley 7, crashproof girder steel 6, fixedly girder steel 9, guide link 10 and haulage cable 28; Fixedly girder steel 9 vertically is installed in from 25mm place, pipeline 3 top, and three guy cable pulley 7 are installed in pipeline 3 tops, diameter Ф=80mm, and pulley 7 adopts sister block, guarantees that wire rope 28 can not be shifted.Three 7, one on pulleys are installed in the top fixedly on the girder steel 9, and all the other two are fixed on pipeline inwall about in the of 3, this structure, and the angle of wire rope and pulley can prevent effectively that all greater than 90 ° wire rope is stuck by pulley.Collision prevention girders is horizontally installed in before the guy cable pulley of top, and guide link is installed in the inner-walls of duct top, and haulage cable 28 penetrates guide link 10 and top guy cable pulley 7; Monitoring pipeline 3 is the pipeline with rigidity and retractility, and its inner wall smooth, internal diameter Ф 500mm, inwall are rail type, the fluted formula track 29 in inside pipe wall both sides.Pipeline 3 adopts the corrugated tube 23 and copper pipe 24 usefulness sealed flange joints 16 hybrid junctions with rigidity and retractility, is embedded in the dam 1, and corrugated tube 23 inwall ripple places are filled with the filling material with retractility, guarantees pipeline 3 inner wall smooths.For measurement and positioning and compensation need, add a permanent magnet rings 25 every 20 meters at pipeline outer wall, for measuring magnetic inductor 11 acknowledge(ment) signals usefulness on the dolly.
The dolly of monitoring device is made up of car body 30, side roll 21, bottom roller 20, draw ring 18, cushion pad 19 and contact reset switch 17; Car body diameter Ф 250mm, high 220mm, long 400mm, wall thickness 10mm, 4 side rolls 21 are installed in car body 30 both sides by spring, and side roll is installed in this diameter of car maximum, two sides and respectively adorn two.Side roll diameter Ф=30mm, the outer rubberite layer that wraps can reduce when rolling and jolt, and the middle ball bearing that adopts rotates smoothly, reduces friction.Be connected with spring between side roll and dolly, guarantee that dolly in moving process, does not produce and rocks, increase stability, if internal diameter of the pipeline has subtle change, because spring action does not influence moving of dolly.4 bottom rollers are installed in the car body bottom by spring, roller diameter Ф=30mm, and the outer rubberite layer that wraps can reduce when rolling and jolt, and the middle ball bearing that adopts rotates smoothly, reduces friction.
Wire rope draw ring 18 is fixed on both sides, dolly body front and back; be used to connect wire rope 28; draw ring 18 is from dolly body bottom 50mm; thereby guarantee that measurement mechanism is at the mobile rollover phenomenon that do not occur; cushion pad 19 is installed in the dolly forward, central part, about each one, adopt high strength, elastic caoutchouc; when dolly is rolled to duct bottom and crashproof girder steel play damping effect when bumping, the protection measurement mechanism.
When dolly was rolled to duct bottom, contact reset switch 17 came in contact with crashproof girder steel, makes system reset, measured and begined a theatrical performance again.
Also can increase a camera 15 and illuminating lamp 16, can check the pipe interior situation, avoid measuring the risk that dolly blindly enters pipeline at the dolly front end.Also camera and illuminating lamp can be arranged separately in one independently on the dolly, before formal the measurement, utilize the dolly of band camera to carry out earlier understandings of making a video recording of pipe interior situation, the safety of assurance measurement dolly.
As Fig. 1, Fig. 2, Fig. 3, Fig. 5, Fig. 7, Fig. 9, shown in Figure 10, a kind of concrete rock panel deflection and dam body inner horizontal and vertical deformation measuring system are made up of the monitoring pipeline 3 that is embedded in dam body 1 inside, monitoring device 5 and draw-gear; Monitoring pipeline 3 is the pipeline with rigidity and retractility, its inner wall smooth, internal diameter Ф 500mm; Monitoring device 5 is made up of high-precision optical fiber gyro inertial navigation instrument, magnetic inductor 11, built-in power 22 and the dolly that loads it; Draw-gear is the equipment that monitoring device is steadily moved in pipeline, is made up of guy cable pulley 7, collision prevention girders 6, fixed beam 9, guide link 10, haulage cable 28 and windlass 4; Fixed beam 9 vertically is installed in from duct bottom 50mm place, and collision prevention girders 6 is horizontally installed in before the guy cable pulley 7 of bottom, and guide link 10 is installed in the inner-walls of duct top, and haulage cable 28 penetrates guide link 10 and bottom guy cable pulley 3.
Monitoring pipeline 3 of the present invention adopts the corrugated tube 23 with rigidity and retractility to be tightly connected, the corrugated tube inwall is filled with the material with retractility, so that pipeline 3 inner wall smooths, pipeline 3 is embedded in the dam body 1, for measurement and positioning and compensation need, add a permanent magnet rings 25 every 20 or 50 meters in the pipeline outside, for measuring magnetic inductor 11 sensing acknowledge(ment) signals usefulness on the dolly; Because monitoring pipeline 3 is combined closely with measured body 1,, can be out of shape correctly reactor masonry dam dam body inner horizontal and vertical deformation preferably because corrugated tube 23 has certain rigid and retractility with rock; Pipeline 3 inner wall smooths, inwall are trackless, but have set up a dividing plate 27 on inside pipe wall top.The indexing unit that comprises guy cable pulley 7, collision prevention girders 6, fixed beam 9, guide link 10, haulage cable 28 that monitoring device is steadily moved in pipeline, windlass 4 is positioned at pipeline 3 ports, three top guy cable pulley 7 are installed in pipeline 1 top, diameter Ф=80mm, pulley 7 adopts sister block, guarantees that wire rope 10 can not be shifted.Three 7, one on pulleys are installed in the top fixedly on the girder steel 9, and all the other two are fixed on pipeline inwall about in the of 3, this structure, and the angle of wire rope and pulley can prevent effectively that all greater than 90 wire rope is stuck by pulley.Crashproof girder steel 7 is horizontally installed in before the guy cable pulley of top, high 80mm, and thick 20mm, when travelling car moved to the top, the cushion pad on the dolly bumped with it, was mainly used in protection measurement mechanism and top guy cable pulley.At this moment, the contact reset switch is in contact with it, and measurement restarts.Bottom fixedly girder steel is mainly used in and fixes a guy cable pulley, vertically be installed in from bottom 300mm place, wide 50mm, thick 20mm, guide link 10 is installed in pipeline 3 inwall tops, and external diameter Ф=30mm installs 1 every about 10m in pipeline, guide link 10 guarantees that the upper edge wire rope can not drop, and influence or obstruction dolly move.Whole measuring channel length is long, and can not keep in repair and change, and has foreign matter to fall into wherein unavoidably in use, for carrying out smoothly of guaranteeing to measure, has increased the bottom foreign matter collection tube 8 of the about 500mm of a segment length on the top.Wire rope 28 just penetrates guide link 10 and bottom guy cable pulley 7 when construction, measurement mechanism 5 comes bivector traction to be displaced in the monitoring pipeline 3 by wire rope; Windlass 4 places the tail end of measuring channel 3, and requirement can two-wayly be rotated, can speed governing, and rotating speed is steady, and haulage cable moves thereby drive dolly;
Measurement mechanism 5 is cores of this measuring system, and measurement mechanism movement requirement in pipeline is steady, makes high-precision optical fiber gyro inertial navigation instrument energy correct measurement go out the variation of concrete enrockment face dam dam body inner horizontal and vertical deformation.Monitoring device is made up of high-precision optical fiber gyro inertial navigation instrument, built-in power 22, magnetic inductor 11 and the dolly that loads them.
High-precision optical fiber gyro inertial navigation instrument is made up of three high-precision optical fiber gyro instrument 13, three quartz accelerometers 12 and DSP signal processor 14.
The fiber-optics gyroscope index is:
Random walk:
Offset drift: 0.1 °/h;
Constant multiplier stability :≤100ppm;
Angular velocity measurement scope: 〉=± 60 °/s;
Operating temperature range: 0～+ 50 ℃;
The quartz accelerometer technical indicator is:
Minimum measured value: 10
-3g
Measurement range: ± 100g;
Operating temperature range: 0～+ 50 ℃;
The characteristic of DSP signal processor:
TMS320C32 dsp chip 40M dominant frequency;
The outside non-volatile nvSRAM of 1M effectively preserves test data;
RS422 serial line interface: 115200 baud rates;
The high-speed a/d sampling;
Measuring accuracy :≤10mm.
Fibre optic gyroscope utilizes its sensitivity to angular velocity, measure quilt and survey the angular velocity of thing, angular velocity signal is passed to the DSP signal processor, and quartz accelerometer is then passed to the DSP signal processor with the linear velocity signal of being surveyed, and magnetic inductor is then passed to the DSP signal processor with the horizontal location signal.Because monitoring device does not have lead to connect with extraneous in test process, adopts built-in power (30W worked 1 hour) for high-precision optical fiber gyro inertial navigation instrument provides power supply, and is chargeable, reuses, in light weight.
Dolly car body 30 diameter Ф≤250mm of the present invention, high 220mm, long 400mm, wall thickness 10mm, roller 21,20 is installed in side and bottom, and draw ring 18, cushion pad 19, reset switch 17 are installed in front and back.
Side roll 21 is installed in dolly body diameter maximum, and two sides are respectively adorned two.Side roll diameter Ф 〉=30mm, the outer rubberite layer that wraps can reduce when rolling and jolt, and the middle ball bearing that adopts rotates smoothly, reduces friction.
All be connected between side roll 21 and bottom roller 20 and dolly, guarantee that dolly in moving process, does not produce and rocks, increase stability, if internal diameter of the pipeline has subtle change, because spring action does not influence moving of dolly with spring.
Wire rope draw ring 18 is fixed on both sides, car body 30 front and back; be used to connect wire rope 28; draw ring 18 is from car body 30 bottom 50mm; thereby guarantee that measurement mechanism is at the mobile rollover phenomenon that do not occur; cushion pad is installed in the dolly forward, central part, about each one, adopt high strength, elastic caoutchouc; when dolly is rolled to duct bottom and crashproof girder steel play damping effect when bumping, the protection measurement mechanism.
When dolly was rolled to duct bottom, contact reset switch 17 came in contact with crashproof girder steel 6, makes system reset, and measurement restarts.
Also can increase a camera 15 and illuminating lamp 16, can check the pipe interior situation, avoid measuring the risk that dolly blindly enters pipeline at the dolly front end.Also camera and illuminating lamp can be arranged separately in one independently on the dolly, before formal the measurement, utilize the dolly of band camera to carry out earlier understandings of making a video recording of pipe interior situation, the safety of assurance measurement dolly.
Claims (10)
1, the measuring system of a kind of dam body panel deflection or dam body inner horizontal and vertical deformation is characterized in that described system is by monitoring device, draw-gear be embedded in panel or the monitoring pipeline of dam body inside is formed; Monitoring device is the device that moves in the monitoring pipeline, comprises high-precision optical fiber gyro inertial navigation instrument and loads its dolly; Draw-gear is the equipment that monitoring device is steadily moved in pipeline, comprises guy cable pulley, collision prevention girders, fixed beam, guide link and haulage cable; Fixed beam vertically is installed in from 25-50mm place, pipeline top, guy cable pulley is installed in monitoring pipeline top, collision prevention girders is horizontally installed in before the guy cable pulley of top, guide link is installed in the inner-walls of duct top, haulage cable penetrates guide link and top guy cable pulley, the monitoring pipeline is the pipeline with rigidity and retractility, its inner wall smooth, internal diameter Φ 300-500mm.
2, measuring system as claimed in claim 1 is characterized in that described monitoring device also comprises the magnetic inductor that is loaded in the dolly.
3, measuring system as claimed in claim 1, the high-precision optical fiber gyro inertial navigation instrument that it is characterized in that described monitoring device is by 2-3 high-precision optical fiber gyro instrument, 2-3 quartzy acceleration device becomes with bank of digital signal processors, and fibre optic gyroscope links to each other with digital signal processor with quartzy acceleration device.
4, measuring system as claimed in claim 1, the dolly that it is characterized in that described monitoring device is made up of car body, side roll, bottom roller, draw ring, cushion pad and contact reset switch, side roll and bottom roller are installed in car body both sides and car body bottom respectively, draw ring is contained in the car body two ends, reset switch and cushion pad are packaged at the car body front end, and cushion pad is positioned at car body front end both sides.
5, measuring system as claimed in claim 1 is characterized in that guy cable pulley is a sister block, is made up of three sister blocks, and a pulley is installed on the fixed beam of top, and two are fixed on pipeline inwall up and down in addition.
6, measuring system as claimed in claim 1 is characterized in that described draw-gear also comprises the windlass that places the monitoring pipe ends, and windlass links to each other with haulage cable.
7, measuring system as claimed in claim 1 is characterized in that the top of described monitoring pipeline is provided with foreign body collector.
8, measuring system as claimed in claim 1, it is characterized in that described monitoring pipeline is hybrid junction pipe or corrugated tube, described hybrid junction pipe adopts the roundy and straight steel pipe and has the sylphon seal connection of certain rigidity and retractility, and described corrugated tube connects with the sylphon seal with certain rigidity and retractility; Its inwall is trackless or rail type, when described pipeline is rail type, and the fluted formula track in its inner-walls of duct both sides.
9,, it is characterized in that described pipeline outer wall is equipped with permanent magnet ring more than 1 as claim 1 or 8 described measuring systems.
10, as claim 1 or 8 described measuring systems, it is characterized in that inner-walls of duct is provided with the dividing plate of control location when described pipeline when being trackless, dividing plate is contained in inner-walls of duct top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012677 CN1229622C (en) | 2004-01-17 | 2004-01-17 | Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012677 CN1229622C (en) | 2004-01-17 | 2004-01-17 | Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body |
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| CN1558182A CN1558182A (en) | 2004-12-29 |
| CN1229622C true CN1229622C (en) | 2005-11-30 |
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| CN 200410012677 Expired - Fee Related CN1229622C (en) | 2004-01-17 | 2004-01-17 | Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body |
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| CN104501730A (en) * | 2014-12-05 | 2015-04-08 | 三峡大学 | Method for accurately measuring horizontal deformation of rocks |
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| CN1558182A (en) | 2004-12-29 |
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