CN204330192U - Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device - Google Patents
Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device Download PDFInfo
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- CN204330192U CN204330192U CN201520013656.7U CN201520013656U CN204330192U CN 204330192 U CN204330192 U CN 204330192U CN 201520013656 U CN201520013656 U CN 201520013656U CN 204330192 U CN204330192 U CN 204330192U
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Abstract
The utility model discloses a kind of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device, comprise experiment table, experiment table two ends are coupled together by two crossbeams, two crossbeams are provided with five can along two crossbeams base in axial sliding, the Roadway model of the different section that installing ring epoxy resins is made on the fixed block of the 3rd base wherein arranged from left to right, and arrange anchor pole and anchor cable model in Roadway model, camera is installed in one end of experiment table, the other end installs light source, wherein on the fixed block of the base of camera one end, analyzer is installed, on the fixed block of the base of light source one end, polarizer is installed, the fixed block of remaining two bases installs quarter-wave plate, analyzer, polarizer, two quarter-wave plates are positioned at sustained height, by photoelastic experiment systematic difference, highly shortened experimental period, reduce experimental error, carry out the research of anchor pole-anchor cable synergetical principle and support parameter optimization design.
Description
Technical field
The utility model relates to a kind of experimental provision, particularly a kind of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device.
Background technology
Coal is one of main energy sources of China, and coal underground mining needs the work space of safety.At present, colliery tunnel support extensively adopts the support forms such as anchor pole, anchor cable, anchor and spray net.Anchor pole-cable bolting is then the combination of bolt supporting and cable bolting, pretightning force anchor pole-cable bolting can form the effective stress district being interconnected, mutually superposing in roadway surrounding rock anchor structure, country rock is become supporting body from load, change passive protecting is active support, peak strength and the residual strength of rock mass in anchorage zone is improved by anchor pole-anchor cable synergy, the development in effective deformation controlling for rock surrounding gateways, displacement and crack, give full play to the supporting role of country rock self, keep the integrality of country rock, stability to greatest extent.Therefore, the synergistic research of anchor pole-anchor cable has profound significance to mine safety, High-efficient Production.
Experiment by photoelastic method method is a kind of method for measuring stress of optics, photoelasticimeter carries out, first make the model similar with actual components shape with the transparent material with birefringenct property, after stressed, with polarized light permeable model, due to the existence of stress, produce the temporary birefrigent phenomenon of light, again through the interference producing light after analyzing prism, screen demonstrates the map with light and shade striped, the stress distribution situation in component can be extrapolated according to it, in this way particularly applicable to complex-shaped component.Because measuring is universe, so it is strong to have intuitive, effectively and exactly can determines deviator stress and the principal direction of stress of stress model each point, and the principle stress numerical value of each point can be calculated.Especially to the determination of component stress coefficient of concentration, experiment by photoelastic method method seems very convenient and effective.
At present, the synergistic research method of anchor pole-anchor cable mainly comprises field measurement, theoretical analysis, physical and numerical modeling, the stress distribution feature that sunykatuib analysis anchor pole-anchor cable pretightning force causes, but there is following problem in said method: 1, field measurement method cannot accurately measure pretightning force size and direction, the synergy of more difficult research anchor pole-anchor cable; 2, physical simulating method ignores the existence of initial rock stress field, and experimental bias is larger; 3, theoretical analysis method grows up on half experiment, semi-theoretical basis, supposes that parameter is more, and comparatively large with actual difference, is difficult to the impact eliminating subjective factor completely; 4, said method is longer for experimental period, and cost is higher.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device, and this experimental provision can reduce experimental error, and can be the Isochromatic fringes that can intuitively observe by abstract stress conversion.
For achieving the above object, the utility model provides following technical scheme: coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device, comprise experiment table, described experiment table two ends are coupled together by two crossbeams, two crossbeams are parallel to each other, described two crossbeams being provided with from left to right successively five can along two crossbeams base in axial sliding, each base upper end is equipped with fixed block, the Roadway model of the different section that installing ring epoxy resins is made on the fixed block of the 3rd base wherein arranged from left to right, and arrange anchor pole and anchor cable model in Roadway model, camera is installed in one end of described experiment table, the other end installs light source, wherein on the fixed block of the base of camera one end, analyzer is installed, on the fixed block of the base of light source one end, polarizer is installed, the fixed block of remaining two bases installs quarter-wave plate, described analyzer, polarizer, two quarter-wave plates are positioned at sustained height.
Preferably, the fixed block installing Roadway model is provided with draw-in groove, and this fixed block is provided with reinforcing knob, is fixed in draw-in groove bottom described Roadway model by reinforcing knob.
Preferably, polarizer, analyzer, two quarter-wave plates are also connected with respective fixed block respectively by reinforcing knob, and described light source and camera are also connected with experiment table respectively by reinforcing knob.
Preferably, anchor pole screw is simulated, the fried dough twist n-body simulation n that anchor cable thin wire twists into, and anchor pole, anchor cable termination are provided with screw thread, can apply pretightning force by fastening nut to the anchor pole in Roadway model, anchor cable.
Preferably, Roadway model section is rectangular.
Preferably, Roadway model section is dome-shaped.
Preferably, Roadway model section is trapezoidal.
Use epoxy resin Roadway model and photoelastic experiment system two parts combine by the utility model, epoxy resin is utilized to produce optically anisotropic feature when stress deformation, according to the optical path difference identified sign difference of polarization direction different light rays, by adopting the Roadway model of different section, observe in specific polarized light field, observed by the camera be connected with computing machine, different Isochromatic fringes can be observed more intuitively, thus realize the internal stress transmission of Real-time Obtaining cast material and deformation data, and then research and analyse anchor pole-anchor cable pretightning force synergy.The present invention, by photoelastic experiment systematic difference, highly shortened experimental period, reduces experimental error, carries out the research of anchor pole-anchor cable synergetical principle and support parameter optimization design.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device;
Fig. 2 is the optical element secured adjusted schematic diagram in the utility model;
Fig. 3 is the Roadway model secured adjusted schematic diagram in the utility model;
Fig. 4-1 is the rectangular shaped roadways sectional model figure in the utility model;
Fig. 4-2 is another rectangular shaped roadways sectional model figure in the utility model;
Fig. 5-1 is the dome-shaped drift section illustraton of model in the utility model;
Fig. 5-2 is another dome-shaped drift section illustratons of model in the utility model;
Fig. 6-1 is the trapezoidal drift section illustraton of model in the utility model;
Fig. 6-2 is another the trapezoidal drift section illustratons of model in the utility model;
Wherein, 1. experiment table 2. crossbeam 3. base 4. Roadway model 5. nut 6. anchor pole 7. anchor cable 8. camera 9. light source 10. analyzer 11. polarizer 12. quarter-wave plate 13. draw-in groove 14. reinforces knob.
Embodiment
Below in conjunction with accompanying drawing, by the description to embodiment, the utility model is described further:
As shown in Figure 1, the utility model coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device, comprise experiment table 1, experiment table 1 two ends are connected by two crossbeams 2, two crossbeams 2 are parallel to each other, two crossbeams 2 being from left to right provided with successively five can along two crossbeams 2 base 3 in axial sliding, each base 3 upper end all fixedly mounts a fixed block, the fixed block of the 3rd base 3 wherein arranged from left to right installs Roadway model 4 by the draw-in groove 13 being located at fixed block upper surface, and Roadway model 4 realizes adjustment that is fastening and height by two the reinforcing knobs 14 being located at this fixed block same side, the crosssection shape design of this Roadway model 4 is rectangle, trapezoidal and dome-shaped, and arrange anchor pole 6 and anchor cable 7 model in Roadway model 4, by draw-in groove 13, Roadway model 4 is installed, be convenient to the Roadway model 4 changing different section shape, a camera 8 is installed by reinforcing knob 14 in one end of experiment table 1, the reinforcing knob 14 at this place is in order to regulate height and the tightness of camera 8, the other end of experiment table 1 also installs a light source 9 by reinforcing knob 14, the reinforcing knob 14 at this place is in order to regulate height and the tightness of light source 9, wherein on the fixed block of the base 3 of camera 8 one end, analyzer 10 is installed, on the fixed block of the base 3 of light source 9 one end, polarizer 11 is installed, the fixed block of remaining two bases 3 installs quarter-wave plate 12, as shown in Figure 2, analyzer 10 is installed, polarizer 11, the fixed block of two quarter-wave plates 12 is respectively equipped with and reinforces knob 14, analyzer 10, polarizer 11, two quarter-wave plates 12 keep analyzer 10 by regulating the reinforcing knob 14 of respective relevant position, polarizer 11, two quarter-wave plates 12 are in sustained height.
Anchor pole 6, anchor cable 7 model are embedded in Roadway model 4 by Roadway model 4 of the present utility model in manufacturing process, wherein anchor pole 6 is simulated with screw, the fried dough twist n-body simulation n that anchor cable 7 twists into thin wire, and anchor pole 6, anchor cable 7 termination are provided with screw thread, pretightning force can be applied to the anchor pole 6 in Roadway model 4, anchor cable 7 by fastening nut 5.By the Roadway model 4 of different section shape, such as Semicircular arched, trapezoidal, rectangle, and varying number and inlay the anchor pole of position, the Roadway model 4 that various combination form made by anchor cable.Be produced as follows:
1, by the liquid charging stock of epoxy resin and the hardening agent ratio mixing and stirring in 4:1, then with degassing method removing bubble wherein;
2, the liquid charging stock of epoxy resin and the mixture slurry of hardening agent are poured in the metal grinding tool that cleaning keeps flat;
3, anchor pole 7 and anchor cable 6 are embedded in the Roadway model 4 of selected section configuration;
4, metal grinding tool is put into baking oven, set temperature 120 DEG C, toast 4 hours;
5, metal grinding tool is taken out in baking oven, naturally after cooling, Roadway model 4 is taken out from the demoulding in metal grinding tool;
6, select the anchor pole 6 of the Roadway model 4 of different section shape and varying number, anchor cable 7 carries out various combination, repeat step 1 to step 5.
Roadway model 4 and photoelastic experiment system two parts combine by the utility model, utilize epoxy resin to produce optically anisotropic feature when stress deformation, according to the optical path difference identified sign difference of polarization direction different light rays; By to the Roadway model 4 of different section shape and varying number and inlay the anchor pole of position, anchor cable combines, observe in specific polarized light field, different Isochromatic fringes is observed intuitively by camera, Real-time Obtaining Roadway model 4 material internal Stress transmit and deformation data, obtain stress state and the distribution characteristics of corresponding Roadway model 4, stress state in kind and distribution characteristics can convert according to similarity theory and obtain, and then research and analyse the synergy of anchor pole 6, anchor cable 7 pretightning force.By photoelastic experiment systematic difference, highly shortened experimental period, reduce experimental error, carry out the research of anchor pole-anchor cable synergetical principle and support parameter optimization design.
The utility model indication optical element refers to analyzer 10, polarizer 11 and quarter-wave plate 12.
Use procedure of the present utility model is:
1, switched on power by light source 9, light source 9 is opened, and adjusts each optical element, makes anchor pole 6, the light interference phenomena of anchor cable 7 stress reaches best by reinforcing knob 14;
2, Roadway model 4 is put into draw-in groove 13, just to the opposite side of light source 9, through the interference fringe of anchor pole 6, anchor cable 7 near zone in polaroid observation Roadway model 4, clearly can observe in specific polarized light field and anchor pole 6, Isochromatic fringes that anchor cable 7 pretightning force is relevant, make a record (shape of striped, size and quantity) and take Isochromatic fringes photo by camera 8;
3, Roadway model 4 is taken off, the nut 5 of anchor pole, anchor cable termination is tightened with supporting nipper pliers, namely the pretightning force of anchor pole 6, anchor cable 7 is increased, Roadway model 4 is put back to draw-in groove 13, then clearly can observe in specific polarized light field that striped now has obvious change compared with before, make a record (shape of striped, size and quantity) and take Isochromatic fringes photo;
4, choose the Roadway model 4 of various combination form, repeat step 2 and step 3;
5, close light source 9, necessary accessories are replaced.
After completing above-mentioned steps, the data of record and isochromatic fringes photo are arranged and preserves, for researching and analysing of anchor pole 6 anchor cable 7 Synergistic Mechanisms.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (7)
1. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device, comprise experiment table (1), described experiment table (1) two ends are coupled together by two crossbeams (2), two crossbeams (2) are parallel to each other, it is characterized in that: described two crossbeams (2) being provided with from left to right successively five can along two crossbeams (2) base (3) in axial sliding, each base (3) upper end is equipped with fixed block, the Roadway model (4) of the different section that installing ring epoxy resins is made on the fixed block of the 3rd base (3) wherein arranged from left to right, and arrange anchor pole (6) and anchor cable (7) model in Roadway model (4), camera (8) is installed in one end of described experiment table (1), the other end installs light source (9), wherein on the fixed block of the base (3) of camera (8) one end, analyzer (10) is installed, on the fixed block of the base (3) of light source (9) one end, polarizer (11) is installed, the fixed block of remaining two bases (3) installs quarter-wave plate (12), described analyzer (10), polarizer (11), two quarter-wave plates (12) are positioned at sustained height.
2. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device according to claim 1, it is characterized in that: the fixed block of described installation Roadway model (4) is provided with draw-in groove (13), and this fixed block is provided with reinforces knob (14), described Roadway model (4) bottom is fixed in draw-in groove (13) by reinforcing knob (14).
3. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device according to claim 2, it is characterized in that: described polarizer (11), analyzer (10), two quarter-wave plates (12) are also connected with respective fixed block respectively by reinforcing knob (14), and described light source (9) and camera (8) are also connected with experiment table (1) respectively by reinforcing knob (14).
4. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device according to claim 3, it is characterized in that: anchor pole (6) is simulated with screw, the fried dough twist n-body simulation n that anchor cable (7) twists into thin wire, and anchor pole (6), anchor cable (7) termination are provided with screw thread, pretightning force can be applied to the anchor pole (6) in Roadway model (4), anchor cable (7) by fastening nut (5).
5. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device according to claim 3, is characterized in that: described Roadway model (4) section is rectangular.
6. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device according to claim 3, is characterized in that: described Roadway model (4) section is dome-shaped.
7. coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device according to claim 3, is characterized in that: described Roadway model (4) section is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520013656.7U CN204330192U (en) | 2015-01-08 | 2015-01-08 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520013656.7U CN204330192U (en) | 2015-01-08 | 2015-01-08 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
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| Publication Number | Publication Date |
|---|---|
| CN204330192U true CN204330192U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520013656.7U Expired - Fee Related CN204330192U (en) | 2015-01-08 | 2015-01-08 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568253A (en) * | 2015-01-08 | 2015-04-29 | 安徽理工大学 | Photoelastic experimental device for coal mine roadway anchor bolt and anchor rope synergistic effect |
| CN108827511A (en) * | 2018-05-30 | 2018-11-16 | 中国科学院高能物理研究所 | The measurement method and measuring device of noncrystal transparent material internal stress |
-
2015
- 2015-01-08 CN CN201520013656.7U patent/CN204330192U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568253A (en) * | 2015-01-08 | 2015-04-29 | 安徽理工大学 | Photoelastic experimental device for coal mine roadway anchor bolt and anchor rope synergistic effect |
| CN104568253B (en) * | 2015-01-08 | 2017-09-12 | 安徽理工大学 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
| CN108827511A (en) * | 2018-05-30 | 2018-11-16 | 中国科学院高能物理研究所 | The measurement method and measuring device of noncrystal transparent material internal stress |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20180108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |