CN115308365A - Mining subsidence imaging indoor model experimental device based on PIV technology - Google Patents
Mining subsidence imaging indoor model experimental device based on PIV technology Download PDFInfo
- Publication number
- CN115308365A CN115308365A CN202210795712.1A CN202210795712A CN115308365A CN 115308365 A CN115308365 A CN 115308365A CN 202210795712 A CN202210795712 A CN 202210795712A CN 115308365 A CN115308365 A CN 115308365A
- Authority
- CN
- China
- Prior art keywords
- transparent test
- test box
- piv
- reflector
- mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention provides an indoor model experimental device for goaf sedimentation imaging based on PIV technology, which can simulate a goaf sedimentation process and adopts the technical scheme that the indoor model experimental device comprises an experimental table, a transparent test box is fixedly connected above the experimental table, a through hole is formed in the lowest part of the right side wall of the transparent test box, the bottom end inside the transparent test box is transversely connected with an exploitation model body matched with the through hole in a sliding mode, the exploitation model body is connected with a power device fixedly connected to the experimental table, a first reflecting mirror is connected to the upper part of the transparent test box in a damping and rotating mode in the vertical direction, a mirror surface reflecting device corresponding to the first reflecting mirror is arranged on the right side of the experimental table, a PIV laser emitter is arranged on the left side of the transparent test box, a first CCD high-speed camera is arranged in the front longitudinal direction of the transparent test box, and a second CCD high-speed camera is arranged on the left side of the mirror surface reflecting device.
Description
Technical Field
The invention relates to an experimental device, in particular to a PIV technology-based mining subsidence imaging indoor model experimental device.
Background
The goaf is a 'cavity' generated under the ground surface by artificial excavation or natural geological motion, the safety production of mines faces a great safety problem due to the existence of the goaf, personnel and mechanical equipment can fall into the goaf and be damaged, because the underground goaf has the characteristics of strong invisibility, poor regularity of spatial distribution characteristics, difficult prediction of caving and collapse conditions of a top plate of the goaf and the like, therefore, how to quantitatively judge the distribution range, the spatial morphological characteristics, the caving condition and the like of the underground goaf is a key technical problem which always troubles engineering technicians to evaluate the potential hazard of the goaf and reasonably determine a goaf treatment strategy, the simulation of goaf sedimentation on site is not easy to realize, the existing laboratory equipment is difficult to effectively simulate the goaf sedimentation reduction process, the PIV technology is also called a particle image velocity measurement method, is a transient, multipoint and non-contact fluid mechanics velocity measurement method developed in the late seventies, is continuously perfected and developed in recent decades, and is characterized by exceeding the limitation of a single-point velocity measurement technology, being capable of recording velocity distribution information on a large number of space points in the same transient state, and can provide abundant flow field space structure and flow characteristics, the prior art is lack of experimental equipment for simulating goaf settlement by using PIV technology, moreover, a CCD high-speed camera in the PIV technical equipment needs to be calibrated when in use to ensure the stability and the accuracy of shooting, in the experiment process of simulating the goaf settlement by using the PIV technology, the right upper part of an experiment box needs to be shot for image analysis, but it is comparatively difficult to use the high-speed camera of CCD to shoot directly over the experimental box, and the high-speed camera of CCD can't effective positioning in order to guarantee the stability and the accuracy of shooing.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides an indoor model experiment device for a mining subsidence imaging based on a PIV technology, which simulates the mining subsidence process by using the PIV technology and corresponding equipment, analyzes and compares image information data, can quickly and effectively obtain the characteristics and related data of the mining subsidence, can conveniently acquire the image information right above an experiment box by arranging a mirror reflection device, can calibrate a CCD high-speed camera and shoot images in mirror reflection like the conventional way to finish the acquisition of the image information, ensures the stability and accuracy of shooting, and can adjust the distance drawn by a mining model body in real time by arranging a power device corresponding to the mining model body so as to simulate the mining subsidence process under different mining subsidence degrees.
The technical scheme of its solution is, including the laboratory bench, a serial communication port, laboratory bench top fixedly connected with transparent test box, the through-hole with the inside intercommunication of transparent test box is seted up to transparent test box right side wall below, the inside bottom lateral sliding connection of transparent test box has the mining model body with through-hole complex, mining model body coupling has the power device of fixed connection on the laboratory bench, the vertical damping rotation in transparent test box top is connected with first speculum, the laboratory bench right side is equipped with the specular reflection device who corresponds with first speculum position, transparent test box left side is equipped with PIV laser emitter, the vertical place ahead of transparent test box is equipped with first CCD high-speed camera, specular reflection device left side is equipped with the high-speed camera of second CCD.
Preferably, the mirror reflection device comprises a support frame positioned on the right side of the experiment table, a second reflector is rotatably connected with the vertical damping above the support frame, and a third reflector is rotatably connected with the vertical damping below the support frame.
Preferably, the included angle between the first reflector and the horizontal plane is 45 degrees, the included angle between the second reflector and the horizontal plane is 135 degrees, the included angle between the third reflector and the horizontal plane is 45 degrees, and the included angle between the third reflector and the horizontal plane is 45 degrees.
Preferably, the left end face of the mining model body is fixedly connected with a sealing plate, and sealing grooves matched with the sealing plate are formed in the left side wall and the right side wall of the transparent test box.
Preferably, the power device comprises an electric telescopic rod which is fixedly connected to the experiment table and located above the right side of the through hole, the output end of the electric telescopic rod faces the right side, and the output end of the electric telescopic rod is fixedly connected with the mining model body.
Preferably, the output end of the PIV laser transmitter faces towards the right side and is right opposite to the transparent test box, the output end of the first CCD high-speed camera faces towards the longitudinal rear and is right opposite to the transparent test box, and the output end of the second CCD high-speed camera faces towards the right side and is right opposite to the mirror surface of the third reflector.
The invention has the beneficial effects that:
1. the process of the mining subsidence is simulated by using the PIV technology and corresponding equipment, and the image information data is analyzed and compared, so that the characteristics and related data of the mining subsidence can be quickly and effectively obtained;
2. the mirror reflection device is arranged, so that image information right above the experimental box can be conveniently acquired, the CCD high-speed camera is calibrated like a conventional method, and the image information can be acquired by shooting an image in mirror reflection, so that the shooting stability and accuracy are ensured;
3. by arranging the power device corresponding to the mining model body, the distance pulled out by the mining model body can be adjusted in real time, and then the mining empty sedimentation process under different mining empty stroke degrees is simulated.
Drawings
FIG. 1 is a first perspective view of the present invention.
FIG. 2 is a schematic diagram of the experimental apparatus of the main body of the present invention.
FIG. 3 is a partial sectional view showing the internal structure of the main body experimental apparatus of the present invention in an initial state.
FIG. 4 is a partial sectional view of the internal structure of the main experimental apparatus according to the present invention in the operating state.
FIG. 5 is a schematic view of a transparent test chamber apparatus according to the present invention from a first perspective.
FIG. 6 is a second perspective view of the transparent test chamber apparatus of the present invention.
Reference numerals
1. The device comprises a test table, 2, a transparent test box, 3, a through hole, 4, an exploitation model body, 5, a first reflector, 6, a PIV laser emitter, 7, a first CCD high-speed camera, 8, a second CCD high-speed camera, 9, a support frame, 10, a second reflector, 11, a third reflector, 12, a sealing plate, 13, a sealing groove and 14, and an electric telescopic rod.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 6.
When the mining model body 4 is completely positioned in the transparent test box 2 fixedly connected above the experiment table 1 in an initial state, the transparent test box 2 can be made of transparent toughened glass to ensure the structural strength of the box body, then a proper amount of sand for simulation experiment is poured into the transparent test box 2, the left end face of the mining model body 4 is fixedly connected with the sealing plate 12, the left side wall and the right side wall of the transparent test box 2 are respectively provided with the sealing groove 13 matched with the sealing plate 12, the bottommost part of the right side wall of the transparent test box 2 is provided with the through hole 3 communicated with the inside of the transparent test box 2, so that the sealing plate 12 fixedly connected with the left end face of the mining model body 4 is positioned in the sealing groove 13 on the left side wall of the transparent test box 2 when the mining model body 4 is completely positioned in the transparent test box 2, the mining model body 4 blocks the through hole 3 to prevent the sand in the transparent test box 2 from flowing out through the through hole 3, and the sealing plate 12 fixedly connected with the left end face of the mining model body 4 is positioned in the sealing groove 13 on the right side wall of the transparent test box 2 to prevent the sand in the through hole 2 from flowing out through the through hole 3 when the mining model body 4 is completely pulled out of the transparent test box 2 by a power device.
Then adjusting the included angle between a first reflector 5 and a horizontal plane which are rotatably connected with a vertical damping device above the transparent test chamber 2 to enable the included angle between the first reflector 5 and the horizontal plane to be 45 degrees and the mirror surface to face the right side, so that the vertical upward light emitted by the sand layer image information above the transparent test chamber 2 is reflected by the first reflector 5 and then horizontally emitted to the right, adjusting the included angle between each mirror and the horizontal plane in a mirror surface reflection device which is arranged at the right side of the experiment table 1 and corresponds to the position of the first reflector 5, wherein the mirror surface reflection device comprises a support frame 9 positioned at the right side of the experiment table 1, the vertical damping device above the support frame 9 is rotatably connected with a second reflector 10, the vertical damping device below the support frame 9 is rotatably connected with a third reflector 11, adjusting the included angle between the second reflector 10 and the horizontal plane to enable the included angle between the second reflector 10 and the horizontal plane to be 135 degrees and the mirror surface to face the left side, adjusting the included angle between the third reflector 11 and the horizontal plane to enable the third reflector 11 to be 45 degrees and the mirror surface to face the left side, so that the included angle between the third reflector 11 and the horizontal plane can be changed to obtain the high-speed image of the sand layer image collected by a high speed transparent camera which is placed above the transparent test chamber 2 and is calibrated by a CCD camera which is capable of collecting the sand layer which is placed above the vertical device and is capable of collecting the sand layer which is capable of collecting the sand layer and collecting the sand layer which is capable of collecting the high speed, the stability and the accuracy of shooting are ensured.
Then, the positions of each CCD high-speed camera and the PIV laser emitter 6 are adjusted, the PIV laser emitter 6 is placed on the left side of the transparent test box 2, the output end of the PIV laser emitter 6 faces the right side and is opposite to the transparent test box 2, the first CCD high-speed camera 7 is placed in the longitudinal front of the transparent test box 2, the output end of the first CCD high-speed camera 7 faces the longitudinal rear and is opposite to the transparent test box 2, the second CCD high-speed camera 8 is placed between the test table 1 and the third reflecting mirror 11, the height of the second CCD high-speed camera 8 is adjusted to be a proper position, the output end of the second CCD high-speed camera 8 faces the right side and is opposite to the mirror surface of the third reflecting mirror 11, then a computer switch corresponding to the PIV equipment is turned on, the PIV laser emitter 6 emits laser to irradiate the sand in the transparent test box 2, the first CCD high-speed camera 7 conducts image information collection on the longitudinal front end face of the sand in the transparent test box 2 before simulating mining subsidence, and the second CCD high-speed camera 8 can obtain image information on the transparent sand layer above the inside of the transparent sand test box 2 before simulating mining subsidence through collecting images in the third reflecting mirror surface 11.
Then, a power device fixedly connected to the experiment table 1 and correspondingly connected with the mining model body 4 is controlled to start working through the controller, the power device drives the mining model body 4 to slide transversely in the through hole 3, the power device comprises an electric telescopic rod 14 fixedly connected to the experiment table 1 and located above the right side of the through hole 3, the output end of the electric telescopic rod 14 faces the right side, the output end of the electric telescopic rod 14 is fixedly connected with the mining model body 4, the output end of the electric telescopic rod 14 is controlled to extend rightwards through the controller to drive the mining model body 4 to slide rightwards, the mining model body 4 slides rightwards and is continuously pulled out of the transparent test box 2 through the through hole 3, sand above the mining model body 4 starts to gradually fall downwards under the action of gravity, so that an experiment effect of simulating the mining subsidence is achieved, the distance of the mining body 4 sliding rightwards can be adjusted in real time through controlling the distance of the output end of the electric telescopic rod 14 to extend rightwards through the controller, so that the mining subsidence process of the mining empty under different mining degrees is simulated, the mining subsidence process of the mining empty is simulated, the image information is acquired by the first CCD high-speed camera 7, the image information acquisition is effectively acquired by the CCD high-speed camera, the image information of the image acquisition in the process before the image acquisition simulation of the empty image acquisition process, and the empty image acquisition process is effectively compared with the image information of the image acquisition process of the image acquisition, and the image acquisition of the image acquisition process before the image acquisition is effectively obtained by the image acquisition by the CCD image acquisition, and the image acquisition process, the image acquisition is effectively compared, and the image acquisition process of the image acquisition by the image acquisition of the image acquisition is effectively.
Claims (6)
1. Model experimental apparatus in sky settlement formation of image is adopted based on PIV technique, including laboratory bench (1), a serial communication port, laboratory bench (1) top fixedly connected with transparent test case (2), through-hole (3) with the inside intercommunication of transparent test case (2) are seted up to transparent test case (2) right side wall bottommost, the inside bottom lateral sliding connection of transparent test case (2) has and develops model body (4) with through-hole (3) complex, it is connected with the power device of fixed connection on laboratory bench (1) to exploit model body (4), the vertical damping rotation in transparent test case (2) top is connected with first speculum (5), laboratory bench (1) right side is equipped with the mirror surface reflect meter who corresponds with first speculum (5) position, transparent test case (2) left side is equipped with PIV laser emitter (6), transparent test case (2) vertically are equipped with first CCD high-speed camera (7), mirror surface reflect meter left side is equipped with second CCD high-speed camera (8) the place ahead.
2. The PIV technology-based mining airborne settlement imaging indoor model experimental device as claimed in claim 1, wherein the mirror reflection device comprises a support frame (9) located on the right side of the experimental table (1), a second reflector (10) is rotationally connected with the support frame (9) in a vertically damped mode, and a third reflector (11) is rotationally connected with the support frame (9) in a vertically damped mode.
3. The PIV technology-based mining subsidence imaging indoor model experimental apparatus as claimed in claim 2, wherein the first reflector (5) has an included angle of 45 degrees with the horizontal plane and the mirror surface faces the right side, the second reflector (10) has an included angle of 135 degrees with the horizontal plane and the mirror surface faces the left side, and the third reflector (11) has an included angle of 45 degrees with the horizontal plane and the mirror surface faces the left side.
4. The PIV technology-based mining subsidence imaging indoor model experimental device of claim 1, wherein a sealing plate (12) is fixedly connected to the left end face of the mining model body (4), and sealing grooves (13) matched with the sealing plate (12) are formed in the left side wall and the right side wall of the transparent test box (2).
5. The PIV technology-based mining airborne settlement imaging indoor model experimental device as claimed in claim 1, wherein the power device comprises an electric telescopic rod (14) fixedly connected to the experimental bench (1) and located above the right side of the through hole (3), the output end of the electric telescopic rod (14) faces the right side, and the output end of the electric telescopic rod (14) is fixedly connected with the mining model body (4).
6. The PIV technology-based mining airborne settlement imaging indoor model experimental device is characterized in that the output end of the PIV laser emitter (6) faces right to the transparent test box (2), the output end of the first CCD high-speed camera (7) faces longitudinal rear to the transparent test box (2), and the output end of the second CCD high-speed camera (8) faces right to the mirror surface of the third reflector (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795712.1A CN115308365A (en) | 2022-07-07 | 2022-07-07 | Mining subsidence imaging indoor model experimental device based on PIV technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795712.1A CN115308365A (en) | 2022-07-07 | 2022-07-07 | Mining subsidence imaging indoor model experimental device based on PIV technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115308365A true CN115308365A (en) | 2022-11-08 |
Family
ID=83857388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210795712.1A Pending CN115308365A (en) | 2022-07-07 | 2022-07-07 | Mining subsidence imaging indoor model experimental device based on PIV technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115308365A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115933109A (en) * | 2022-11-29 | 2023-04-07 | 哈尔滨工程大学 | Optical auxiliary system suitable for cross-medium inclined shooting of camera in multi-camera PIV test |
-
2022
- 2022-07-07 CN CN202210795712.1A patent/CN115308365A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115933109A (en) * | 2022-11-29 | 2023-04-07 | 哈尔滨工程大学 | Optical auxiliary system suitable for cross-medium inclined shooting of camera in multi-camera PIV test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206056526U (en) | A kind of earth and rockfill dam comes down photogrammetric experiment porch | |
| CN106124739B (en) | A kind of multifunctional high speed remotely comes down dynamic process physical model test device | |
| CN104952345B (en) | Strike-slip fault zone physical simulation experiment device and its operating method | |
| CN205591910U (en) | Solution cavity detection system | |
| CN105804721A (en) | Karst cave probing system and using method thereof | |
| CN115308365A (en) | Mining subsidence imaging indoor model experimental device based on PIV technology | |
| CN109374856A (en) | Observe the experimental rig and application method of transparent soil model interior three-dimensional geometric distortion | |
| CN105823698B (en) | Box wave simulator and method are rushed in a kind of hydraulic control | |
| CN111308048B (en) | Piping three-dimensional observation device and method based on PIV technology | |
| CN111679060B (en) | Angle-variable side slope model test device and method under coupling effect of earthquake and rainfall | |
| CN107621524A (en) | The transparent soil model experimental rig and test method of a kind of simulation tunnel excavation deformation | |
| CN104406760B (en) | A kind of slumped mass of testing is to the experimental system for simulating of building percussion and method | |
| CN106595508A (en) | Measuring device and measuring method for surrounding rock deformation of geotechnical model test | |
| CN102706899B (en) | System and method for detecting secondary image of automobile glass | |
| CN113124797B (en) | Hydraulic support group pose simulation system based on adjustable bottom plate | |
| CN109374644A (en) | Tunnel-liner defect intelligent measurement imitative experimental appliance based on image recognition | |
| CN107102118B (en) | The model test apparatus of real-time measurement traction landslide slopes ess-strain | |
| CN108508184A (en) | A kind of complex conditions seam mining subsidence analog simulation experimental rig and method | |
| CN108593880B (en) | Automatic test device and method for mining earth surface movement test | |
| CN211206823U (en) | Cable path appearance performance evaluation device | |
| CN2809634Y (en) | High resolution acquisition analyzer for rock and ore core images | |
| CN113552315B (en) | Multifunctional transparent soil model test master control system device and application method thereof | |
| CN110082307A (en) | Simulate the coal petrography reflectance spectrum identification experimental provision and method of underground coal mine environment | |
| CN211236266U (en) | Seismic exploration simulation experiment device | |
| CN113888946A (en) | Multifunctional high-speed remote landslide dynamic process physical model test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |