CN110225230B - Rock-fill dam underwater panel crack electronic control itinerant monitoring device and using method thereof - Google Patents
Rock-fill dam underwater panel crack electronic control itinerant monitoring device and using method thereof Download PDFInfo
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- CN110225230B CN110225230B CN201910456843.5A CN201910456843A CN110225230B CN 110225230 B CN110225230 B CN 110225230B CN 201910456843 A CN201910456843 A CN 201910456843A CN 110225230 B CN110225230 B CN 110225230B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
- F16M11/425—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels along guiding means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The invention discloses an electric control itinerant monitoring device for cracks of an underwater panel of a rock-fill dam and a using method of the electric control itinerant monitoring device. The underwater shooting device can carry out full-coverage image acquisition on the concrete rock-fill dam panel through the gear device, the assembled electrified magnetic wire sleeve and the shooting device, crack monitoring data are expanded in time and space, meanwhile, the device adopts a high-definition camera to shoot the surface of the concrete panel, and acquired crack information comprises crack positions, crack forms and the total number of cracks.
Description
Technical Field
The invention relates to the field of hydraulic structure safety monitoring, in particular to an electric control itinerant monitoring device for cracks of an underwater face plate of a rock-fill dam and a using method of the electric control itinerant monitoring device.
Background
Crack monitoring of concrete face rockfill dams is an important part of dam body structure safety monitoring. The deformation of the concrete material is easily affected by temperature, and when the temperature field distribution of the concrete structural member is not uniform, the expansion or contraction states of different parts are different, so that temperature cracks can be generated on the surface of the concrete structural member. The concrete-faced rock-fill dam built in a high-altitude cold area is characterized in that day and night temperature difference of a dam site area is large, and temperature cracks are easily generated on the surface of a concrete-faced rock-fill dam panel under natural climate conditions. Therefore, the device specially aiming at monitoring the cracks of the concrete face rockfill dam in the running period in the alpine region and the using method thereof are searched, are the research hotspots of researchers in the field of hydraulic structure safety monitoring for the crack monitoring direction under extreme conditions, and play an important role in the safe and stable running of the concrete face rockfill dam structure.
Generally, a crack meter is embedded in some important monitoring positions in a hydraulic structure crack monitoring project, however, this method can only monitor the cracking state of some positions inside the dam body, and the actual effect of crack monitoring is limited, so how to extend the coverage of crack monitoring becomes the direction of research of structural safety monitoring technicians. In addition, in the above-mentioned traditional crack monitoring mode, in case the joint meter breaks down or damages and is difficult for repairing and changing, consequently, along with the increase of concrete panel rock-fill dam operating time, the survival rate of joint meter will constantly reduce, and the quality of crack monitoring project can't obtain guaranteeing. Thirdly, the monitoring amount of the joint meter is the opening degree of the cracks, the number of the cracks and the specific shape of the cracks cannot be monitored, and a reinforcing and repairing basis cannot be provided for the crack problem of the dam face of the concrete face rockfill dam in the high and cold area in the operation period.
For monitoring the number and the shape of cracks, the current mainstream mode is that a diver carries equipment to submerge into the water bottom to inspect the dam surface. The identification of the slight cracks on the dam surface can be realized by a manual inspection mode, but the following problems still exist: firstly, the professional background of manual inspection on actual operators is strong, and the human errors in actual operation and evaluation are difficult to avoid; secondly, diving patrol has certain dangerousness, and particularly, along with the construction of an extra-high dam in recent years, the diving depth even reaches hundreds of meters, so that the difficulty is increased; thirdly, it is difficult to systematically record the crack information of the entire dam face and perform an overall modeling of the dam face.
Along with the development of unmanned aerial vehicle technique, the engineer technical personnel begin to try to adopt the unmanned aerial vehicle mode of patrolling and examining of shooing under water to monitor the pier crack, but because the complexity of environment such as velocity of flow under water, it is difficult to guarantee all the time to patrol and examine the precision that unmanned aerial vehicle cruise at the fixed point under water. In addition, equipment accuracy requirements such as a camera for crack monitoring are higher, and the quality is heavier usually, therefore in actual engineering, the unmanned aerial vehicle price of purchasing guarantee bearing capacity and duration simultaneously is too expensive. Thirdly, the dam surface safety problem is more likely to occur when the underwater environment is severe, and the underwater unmanned aerial vehicle is difficult to realize fixed-point cruise in a scene with severe environment.
To traditional crack monitoring cover not enough, the monitoring volume is single to and the manual work is patrolled and examined and shortcoming such as unmanned aerial vehicle monitoring stability is not enough, can adopt high definition camera under water to carry out the full coverage shooting to the concrete panel, combine image processing technique to carry out monitoring analysis to panel surface crack.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an electric control itinerant monitoring device for cracks of an underwater panel of a concrete panel rock-fill dam in a severe cold area and a using method thereof.
The technical scheme is as follows: the dam bank structure comprises a transverse moving device, a vertical moving device and a shooting device, wherein the transverse moving device is fixed on a dam top, one side of the transverse moving device is connected with the vertical moving device, the vertical moving device is connected with the shooting device, the transverse moving device moves by utilizing gear transmission, a transverse connecting column is fixed on the transverse moving device, one side of the transverse connecting column is connected with a vertical connecting column, and the bottom of the vertical connecting column is fixed with the vertical moving device.
The transverse moving device comprises gears and a gear track, the gear track is fixed on the top of the dam, at least two gears are meshed on the gear track, and the transverse moving device and the vertical moving device are driven to move through gear transmission.
The gear is provided with a gear connecting shaft in a penetrating manner, gear supports are fixed on two sides of the gear, and a bearing tray is fixed on the top of each gear support.
The gear is provided with a gear external power supply, and the external power supply provides power for the small motor in the gear.
And a transverse connecting column is fixed on one side of the gear bracket and is connected with the vertical connecting column through a high-strength bolt.
The bearing tray is internally provided with a balancing weight.
The vertical moving device fixes the shooting device in a U-shaped groove on the outer side of the vertical moving device through electromagnetic force.
U type inslot be equipped with two slip gyro wheels, be connected with between the slip gyro wheel and shoot the linking bridge, shoot the linking bridge bottom and be fixed with high definition camera under water.
A use method of an electric control itinerant monitoring device for cracks of an underwater panel of a rock-fill dam comprises the following steps:
(1) installing a transverse moving device, fixing a gear track on the surface of the dam crest, connecting a gear and a gear bracket through a gear connecting shaft, fixing a bearing tray on the gear bracket, and placing the assembled device on the gear track;
(2) assembling a vertical moving device, connecting an electromagnetic wire sleeve power supply, and fixing a shooting device in a U-shaped groove on the outer side of the sleeve through electromagnetic force;
(3) fixing a transverse connecting column on a gear bracket, fixing a vertical moving device on a vertical connecting column, and connecting the whole device into a whole through a high-strength bolt;
(4) placing a balancing weight on the bearing tray, and connecting a gear external power supply to drive the vertical moving device to move transversely;
(5) turning off an external power supply of the gear when the underwater high-definition camera transversely rotates for 1-2 m, and controlling a power supply of energized magnet wires to be sequentially turned on through a remote sensing switch, so that the shooting device descends at a constant speed, and the underwater high-definition camera starts to shoot;
(6) and after shooting is finished, processing the data and performing finite element analysis.
Has the advantages that: the underwater shooting device can carry out full-coverage image acquisition on the concrete rock-fill dam panel through the gear device, the assembled electrified magnetic wire sleeve and the shooting device, crack monitoring data are expanded in time and space, meanwhile, the device adopts a high-definition camera to shoot the surface of the concrete panel, and acquired crack information comprises crack positions, crack forms and the total number of cracks.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a schematic view of the assembled bushing connection of the present invention;
FIG. 5 is a flow chart of the operation of the present invention;
fig. 6 is a system framework diagram of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 4, the invention comprises a gear external power supply 1, a bearing tray 2, a balancing weight 3, a gear track 4, a gear 5, a gear connecting shaft 6, a transverse connecting column 7, a high-strength bolt 8, a vertical connecting column 9, an assembled sleeve 10, an outer box 11, a power supply 12, a magnet 13, an electrified lead 14, a shooting connecting support 15, an LED lamp 16, an underwater high-definition camera 17, a gear support 18, a high-strength rivet 19, a sliding roller 20 and a position sensor 21. The gear external power supply 1, the bearing tray 2, the balancing weight 3, the gear track 4, the gear 5, the gear connecting shaft 6 and the gear support 18 form a transverse moving device, and the transverse moving device provides power capable of automatically transversely moving for the testing device; the assembled bushing 10, the outer box 11, the power supply 12, the magnet 13, the electrified lead 14 and the high-strength rivet 19 form a vertical moving device, and the vertical moving device provides power capable of automatically moving vertically for the test device; shooting connecting support 15, LED lamp 16, underwater high definition camera 17 and slip gyro wheel 20 constitute and shoot the device, carry out crack image acquisition.
As shown in figure 1, a gear track 4 in the transverse moving device is fixed at the top of the dam, the arrangement length is determined by the length of the top of the dam, two gears 5 are meshed on the gear track 4, as shown in figure 2, gear external power supplies 1 are connected to the gears 5 to provide power for small motors in the gears 5, and the voltage of the external power supplies is 220V-380V. The two gears 5 are driven by a built-in small motor, are identical in size, have the outer diameter of 30-50 cm, the inner diameter of 3-5 cm, the width of 7-10 cm, the number of teeth of 15-30 teeth and the surface roughness of 1.4-1.8. A gear connecting shaft 6 penetrates through the center of the gear 5, the two gear connecting shafts 6 are the same in size, the diameter is 2-4 cm, the length is 20-40 cm, and the diameter of each gear connecting shaft 6 is the same as the inner diameter of the gear 5. Gear supports 18 are fixed on the left side and the right side of the gear 5, the gear supports 18 are of an isosceles triangle structure, the length of two waist portions of each support is 30-50 cm, the length of the bottom edge of each support is 40-70 cm, and the two gears 5 are connected with the two gear supports 18 through two gear connecting shafts 6. The gear support 18 material is solid stainless steel, and its top is fixed with bearing tray 2, and bearing tray 2 is open-topped inverted isosceles trapezoid structure, and the material is the aluminum alloy, and the height is 30 ~ 40cm, and the bottom width is 30 ~ 40cm, and length is 50 ~ 70cm, and thickness is 3 ~ 5cm, has placed balancing weight 3 in the bearing tray 2, and balancing weight 3 provides weight for the balance of structure, and its weight is between 100 ~ 500 Kg. The balancing weight 3 increases the stability of the whole structure by increasing the weight of the device at the top of the dam in the whole structure, and reduces the tendency that the structure topples towards the vertical moving device.
The left side of gear rack 18 is fixed with horizontal spliced pole 7, and its material is solid stainless steel, and the diameter is 3 ~ 5cm, and length is 20 ~ 50cm, and is fixed with vertical spliced pole 9 through high strength bolt 8, and high strength bolt 8 and vertical spliced pole 9 material are the stainless steel, and high strength bolt 8's specification is M16 ~ M30, and vertical spliced pole 9 length is 10 ~ 20cm, and length is 20 ~ 40cm, and vertical mobile device is connected to its bottom.
The vertical mobile device is formed by vertically connecting a plurality of sections of assembled sleeves 10, the sections are fixedly connected through high-strength rivets 19, as shown in fig. 4, two groups of electrified magnetic wires are arranged in each section of assembled sleeve 10, each electrified magnetic wire comprises an outer box 11, a magnet 13 is arranged in each outer box 11, an electrified wire 14 is wound on each magnet 13, and a power supply 12 is connected to each electrified wire 14. The assembled sleeve 10 is an aluminum alloy pipe, the length of each section is 50-100 cm, the outer diameter is 10-20 cm, and the thickness is 2-3 mm; the outer box 11 is made of polyvinyl chloride, and the voltage of the power supply 12 is 220-380V; the length of the magnet 13 is 10-20 cm, and the diameter is 5-10 cm; the power conductor 14 is a copper wire with an insulating layer. The vertical moving device fixes the shooting device in a U-shaped groove on the right side of the sleeve through electromagnetic force, and the shooting device can move in the vertical direction.
As shown in fig. 3, the shooting device comprises two sliding rollers 20 located in a U-shaped groove on the right side of the assembled sleeve 10, the sliding rollers 20 are the same in size, the radius is 5-7 cm, the materials are stainless iron and can slide in the U-shaped groove of the assembled sleeve 10, a shooting connecting support 15 is connected between the sliding rollers 20 and made of aluminum alloy, an LED lamp 16 is arranged on the shooting connecting support 15, and an underwater high-definition camera 17 is connected to the bottom of the shooting connecting support. The length of the bracket is 30-50 cm; the input voltage of the LED lamp 16 is 12-24V, the luminous flux is 1000-2000 lm, and the material is stainless steel and toughened glass; the waterproof grade of the underwater high-definition camera 17 is 50-200 m underwater, the recording resolution is 1080 p-1440 p, and a position sensor 21 is fixed at the top of the underwater high-definition camera and used for recording the position of the underwater high-definition camera 17. Since the camera is mounted on the camera connecting bracket 15, the camera connecting bracket 15 is fixed on the sliding roller 20, electromagnetic force is generated after the magnetic coil in the assembled bushing 10 is powered on, and the sliding roller 20 is made of stainless iron material, so that the sliding roller 20 can slide in the U-shaped groove of the bushing. The movement of the sliding roller 20 is realized by controlling the on-off magnetic wire pipes along the way to be sequentially opened and closed, for example, when the sliding roller 20 needs to descend at a constant speed, the on-off magnetic wire power supply is sequentially opened and closed from top to bottom, that is, the on-off magnetic wire power supply in the next section of the assembled casing 10 is opened, the on-off magnetic wire power supply in the assembled casing 10 where the sliding roller 20 is located is closed, and the gear sliding roller 20 is pulled to descend through the change of the electromagnetic force position.
A use method of an electric control itinerant monitoring device for cracks of an underwater panel of a rock-fill dam is shown in figure 5 and comprises the following steps:
(1) installing a transverse moving device, fixing a gear track on the surface of the dam crest, connecting two gears and two gear supports through two gear connecting shafts, fixing a bearing tray on the gear supports, and placing the assembled device on the gear track.
(2) And assembling a vertical moving device, switching on an electromagnetic wire sleeve power supply, and fixing the shooting device in a U-shaped groove on the outer side of the sleeve by electromagnetic force.
(3) Fixing the transverse connecting column on the gear bracket, fixing the vertical moving device on the vertical connecting column, and connecting the whole device into a whole through a high-strength bolt.
(4) And a balancing weight is placed on the bearing tray, and the power supplies of the two gears are connected, so that the power supplies drive the vertical moving device to move transversely.
(5) The gear power supply is turned off when the underwater camera transversely rotates by 1-2 m, the electrified magnetic wire power supply is controlled to be turned on in sequence through the remote sensing switch, the shooting device descends at a constant speed, the underwater high-definition camera starts shooting, the position sensor collects the position of the underwater camera, and meanwhile workers on the surface check the effect of underwater photographic images through VR equipment.
(6) After shooting is finished, the video is cached and compressed, meanwhile, position data collected by the position sensor is collected, and shot image data and the position data are packaged and uploaded to the web server and the data server.
(7) The monitoring manager downloads corresponding data on the web server for processing, firstly converts a video format into a picture format, then performs binarization processing on the picture, derives an abnormal picture screened out by a program after analyzing the picture by the program, performs manual judgment on the abnormal picture by the monitoring manager, and finally stores an analysis result and data in an analysis process to the data server, as shown in fig. 6.
(8) And establishing a three-dimensional model for the concrete panel rock-fill dam, importing crack monitoring data into a model database, and performing finite element structure calculation analysis.
(9) The user terminal can check the three-dimensional model and the crack monitoring result, check the model database, retrieve the monitoring information and realize the visualization of the monitoring data.
Example 1:
purchasing a gear external power supply 1 with a voltage of 220-380V (220V in this embodiment), purchasing two gears 5 with an outer diameter of 30-50 cm (40 cm in this embodiment), an inner diameter of 3-5 cm (4 cm in this embodiment), a width of 7-10 cm (8 cm in this embodiment), a number of teeth of 15-30 teeth (15 teeth in this embodiment), a tooth surface roughness of 1.4-1.8 (1.5 in this embodiment), prefabricating a gear track 4 with a length of 50-150 m (100 m in this embodiment), purchasing two gear connecting shafts 6 with a diameter of 2-4 cm (4 cm in this embodiment) and a length of 20-40 cm (30 cm in this embodiment), installing two gear supports 18 through centers of the two gears, purchasing two sets of gear supports 18 with two waists of 30-50 cm (40 cm in this embodiment), and a bottom edge of 40-70 cm (60 cm in this embodiment), the prefabricated load-bearing tray 2 has a height of 30-40 cm (40 cm in this embodiment), a width of 30-40 cm (40 cm in this embodiment), and a length of 50-70 cm (60 cm in this embodiment), and buys an engineering counterweight 3 with a weight of 100-500 Kg (300 Kg in this embodiment).
The prefabricated transverse connecting column 7 is 3-5 cm (3 cm in the embodiment) in diameter, 20-50 cm (40 cm in the embodiment) in length, prefabricated high-strength bolts 8 are M16-M30 (M30 in the embodiment) in specification, and prefabricated vertical connecting columns 9 are connected with a vertical moving device and are 20-40 cm (30 cm in the embodiment) in length.
Each section of the prefabricated assembled casing 10 has a length of 50-100 cm (100 cm in this embodiment), an outer diameter of 10-20 cm (10 cm in this embodiment), a thickness of 2-3 mm (3 mm in this embodiment), two outer boxes 11 in each section of the casing, a magnet 13 purchased in each outer box 11, a length of 10-20 cm (15 cm in this embodiment), and a diameter of 5-10 cm (8 cm in this embodiment).
The two sliding rollers 20 are purchased with the same size and the radius of 5-7 cm (6 cm in the embodiment), and can slide in a U-shaped groove of an assembled bushing, the aluminum alloy camera connecting support 15 is prefabricated, the length of the aluminum alloy camera connecting support is 30-50 cm (40 cm in the embodiment), the underwater high-definition camera 17 is purchased, the waterproof grade of the underwater high-definition camera is 50-200 m (150 m in the embodiment), the recording resolution is 1080 p-1440 p (1440 p in the embodiment), the LED lamp 16 is purchased, the input voltage of the underwater high-definition camera is 12-24V (24V in the embodiment), the luminous flux of the underwater high-definition camera 17 is 1000-2000 lm (1500 lm in the embodiment), the materials are stainless steel and toughened glass, and the underwater high-definition camera 17 and the LED lamp 16 are both fixed on the.
According to the distribution characteristic that the temperature cracks of the rock-fill dam of the concrete panel are located on the concrete panel, the underwater high-definition camera arranged on the plane full-coverage moving support is used for shooting the concrete panel, and the cracks on the surface of the concrete panel are monitored and analyzed by combining an image processing technology. In addition, a fracture monitoring data sharing platform is established, and the fracture monitoring data in the region is shared and uploaded, so that the centralized analysis and management of a drainage basin management mechanism are facilitated. The invention utilizes a group of gears and gear track devices arranged on the top of an upstream dam to enable a transverse moving device fixed on a gear track to realize transverse movement, the transverse moving device and a vertical moving device are integrated through a transverse-vertical connecting column to realize integral transverse movement, and in the vertical moving device, an assembled electrified magnetic wire sleeve and a sliding roller bracket are utilized to enable a shooting device arranged on a bracket to realize vertical movement.
Claims (6)
1. A use method of an electric control itinerant monitoring device for cracks of an underwater panel of a rock-fill dam is characterized by comprising the following steps:
(1) an electric control itinerant monitoring device for cracks of an underwater face plate of a rock-fill dam is constructed, which comprises a transverse moving device, a vertical moving device and a shooting device, the transverse moving device is fixed on the top of the dam, one side of the transverse moving device is connected with a vertical moving device, the vertical moving device is connected with a shooting device, the transverse moving device comprises gears and a gear track, the gear track is fixed on the top of the dam, at least two gears are meshed on the gear track, the transverse moving device moves by utilizing gear transmission, a transverse connecting column is fixed on the transverse moving device, one side of the transverse connecting column is connected with a vertical connecting column, the bottom of the vertical connecting column is fixed with a vertical moving device, the vertical moving device is formed by vertically connecting a plurality of sections of assembled sleeves, each section of assembled sleeve is internally provided with a plurality of groups of electrified magnetic wires, the vertical moving device fixes the shooting device in a U-shaped groove on the outer side of the vertical moving device through electromagnetic force;
(2) installing a transverse moving device, fixing a gear track on the surface of the dam crest, connecting a gear and a gear bracket through a gear connecting shaft, fixing a bearing tray on the gear bracket, and placing the assembled device on the gear track;
(3) assembling a vertical moving device, connecting an electromagnetic wire sleeve power supply, and fixing a shooting device in a U-shaped groove on the outer side of the sleeve through electromagnetic force;
(4) fixing a transverse connecting column on a gear bracket, fixing a vertical moving device on a vertical connecting column, and connecting the whole device into a whole through a high-strength bolt;
(5) placing a balancing weight on the bearing tray, and connecting a gear external power supply to drive the vertical moving device to move transversely;
(6) turning off an external power supply of the gear when the underwater high-definition camera transversely rotates for 1-2 m, and controlling a power supply of energized magnet wires to be sequentially turned on through a remote sensing switch, so that the shooting device descends at a constant speed, and the underwater high-definition camera starts to shoot;
(7) and after shooting is finished, processing the data and performing finite element analysis.
2. The use method of the rock-fill dam underwater panel crack electronic control itinerant monitoring device according to claim 1, wherein a gear connecting shaft penetrates through the gear, gear supports are fixed on two sides of the gear, and a bearing tray is fixed on the top of each gear support.
3. The use method of the electric control cyclic monitoring device for the cracks of the underwater panel of the rock-fill dam as claimed in claim 1 or 2 is characterized in that the gear is provided with an external gear power supply.
4. The use method of the rock-fill dam underwater panel crack electronic control itinerant monitoring device according to claim 3, wherein a transverse connecting column is fixed to one side of the gear support and is connected with a vertical connecting column through a high-strength bolt.
5. The use method of the electric control cyclic monitoring device for the cracks of the underwater panel of the rock-fill dam as claimed in claim 2, wherein a counter weight is arranged in the bearing tray.
6. The use method of the rock-fill dam underwater panel crack electronic control itinerant monitoring device according to claim 1, characterized in that two sliding rollers are arranged in the U-shaped groove, a shooting connecting support is connected between the sliding rollers, and an underwater high-definition camera is fixed at the bottom of the shooting connecting support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910456843.5A CN110225230B (en) | 2019-05-29 | 2019-05-29 | Rock-fill dam underwater panel crack electronic control itinerant monitoring device and using method thereof |
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| CN201910456843.5A CN110225230B (en) | 2019-05-29 | 2019-05-29 | Rock-fill dam underwater panel crack electronic control itinerant monitoring device and using method thereof |
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| CN110225230B true CN110225230B (en) | 2020-10-27 |
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