CN104568253B - 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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- CN104568253B CN104568253B CN201510009683.1A CN201510009683A CN104568253B CN 104568253 B CN104568253 B CN 104568253B CN 201510009683 A CN201510009683 A CN 201510009683A CN 104568253 B CN104568253 B CN 104568253B
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Abstract
The invention discloses a kind of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device, including experimental bench, experimental bench two ends are connected by two crossbeams, two crossbeams can be along two crossbeams base in axial sliding provided with five, the Roadway model for the different section that epoxy resin is made is installed on the fixed block of the 3rd base wherein arranged from left to right, and arrangement anchor pole and anchor cable model in Roadway model, one end of experimental bench is installed by camera, the other end installs light source, analyzer wherein is installed on the fixed block of the base of camera one end, polarizer is installed on the fixed block of the base of light source one end, quarter-wave plate is installed on the fixed block of remaining two bases, analyzer, polarizer, two quarter-wave plates are located at sustained height, pass through photoelastic experiment systematic difference, it highly shortened experimental period, reduce experimental error, carry out the research of anchor shaft anchor cable synergetical principle and support parameter optimization design.
Description
Technical field
The present invention relates to a kind of experimental provision, more particularly to a kind of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment dress
Put.
Background technology
Coal is one of main energy sources of China, and coal underground mining needs the working space of safety.At present, coal mine roadway
The support forms such as the widely used anchor pole of supporting, anchor cable, anchor and spray net.Anchor pole-cable bolting is then suspension roof support and cable bolting
Interconnection can be formed in roadway surrounding rock anchor structure with reference to, pretightning force anchor pole-cable bolting, be overlapped mutually have effect
Country rock, is changed into supporting body by power area from load, and change passive protecting improves anchor into active support by anchor pole-anchor cable synergy
Gu the peak strength and residual strength of rock mass in area, effective deformation controlling for rock surrounding gateways, displacement and the development in crack, give full play to country rock
The supporting role of itself, keeps integrality, the stability of country rock to greatest extent.Therefore, the research of anchor pole-anchor cable synergy
Safety of coal mines, efficient production are had far-reaching significance.
Experiment by photoelastic method method is a kind of optical method for measuring stress, is carried out on photoelasticimeter, first double with having
The transparent material of refraction performance is made after the model similar with actual components shape, stress, with polarised light permeable model, due to answering
The presence of power, produces the temporary birefrigent phenomenon of light, then through the interference that light is produced after analyser, show have on screen
The map of light and shade striped, the stress distribution situation in component can be extrapolated according to it, in this way to complex-shaped
Component is especially suitable.Because measurement is universe, have intuitive strong, can effectively and to accurately determine stress model each
The deviator stress and principal direction of stress of point, and the principal stress numerical value of each point can be calculated.Especially to component stress coefficient of concentration
It is determined that, experiment by photoelastic method Faxian obtains extremely convenient and effective.
At present, the research method of anchor pole-anchor cable synergy mainly include field measurement, theory analysis, physical analogy and
Numerical simulation, sunykatuib analysis anchor pole-stress distribution feature caused by anchor cable pretightning force, but there is problems with the above method：1、
Field measurement method can not accurately measure pretightning force size and direction, it is more difficult to study the synergy of anchor pole-anchor cable；2nd, physics mould
Plan method ignores the presence of initial rock stress field, and experimental bias is larger；3rd, theoretical analysis method is on half experiment, semi-theoretical basis
On grow up, it is assumed that parameter is more, and larger with actual difference, it is difficult to the influence of subjective factor is completely eliminated；4th, it is above-mentioned
The methods experiment cycle is longer, and cost is higher.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment dress
Put, the experimental provision can reduce experimental error, and can be the Isochromatic fringes that can intuitively observe by abstract stress conversion.
To achieve the above object, the present invention provides following technical scheme：Coal mine roadway anchor shaft anchor cable synergy is photoelastic
Experimental provision, including experimental bench, the experimental bench two ends are connected by two crossbeams, and two crossbeams are parallel to each other, described
Being sequentially provided with five on two crossbeams from left to right can be along two crossbeams base in axial sliding, and each base upper end is equipped with solid
Block is determined, wherein installing the tunnel mould for the different section that epoxy resin is made on the fixed block of the 3rd arranged from left to right base
Camera is installed in arrangement anchor pole and anchor cable model in type, and Roadway model, one end of the experimental bench, and the other end installs light
Source, wherein analyzer is installed on the fixed block of the base of camera one end, on the fixed block of the base of light source one end
Polarizer is installed, quarter-wave plate is installed on the fixed block of remaining two bases, the analyzer, polarizer, two four
/ mono- wave plate is located at sustained height, and the fixed block for installing Roadway model is provided with neck, and the fixed block is provided with reinforcing
Knob, the Roadway model bottom is fixed in neck by reinforcing knob, polarizer, analyzer, two quarter-wave plates
Also it is connected respectively by reinforcing knob with respective fixed block, the light source is with camera also respectively by reinforcing knob and experiment
Platform is connected, and the technical process of the Roadway model is：1st, the liquid charging stock and curing agent of epoxy resin are pressed 4:1 ratio mixing
Stir, then remove bubble therein with degassing method；2nd, by the liquid charging stock of epoxy resin and the mixture slurry of curing agent
Pour into the clean metal grinding tool kept flat；3rd, anchor pole 7 and anchor cable 6 are embedded in the Roadway model 4 of selected section configuration；4th, will
Metal grinding tool is put into baking oven, sets 120 DEG C of temperature, toasts 4 hours；5th, metal grinding tool is taken out out of baking oven, natural cooling
Roadway model 4 is stripped taking-up out of metal grinding tool afterwards.
It is preferred that, anchor pole is simulated with screw, the fried dough twist body simulation that anchor cable is twisted into thin wire, and anchor pole, anchor cable termination
Provided with screw thread, pretightning force can be applied to the anchor pole in Roadway model, anchor cable by tightening nut.
It is preferred that, Roadway model section is rectangular.
It is preferred that, Roadway model section is in dome-shaped.
It is preferred that, Roadway model section is trapezoidal.
The present invention will use epoxy resin Roadway model and photoelastic experiment system two parts to combine, and utilize epoxy resin
Optically anisotropic feature is produced in stress deformation, according to the optical path difference identified sign difference of the different light in polarization direction,
By using the Roadway model of different section, observe, entered by the camera being connected with computer in specific polarized light field
Row observation, can more intuitively observe different Isochromatic fringes, thus realize obtain in real time the transmission of cast material internal stress with
Deformation data, and then research and analyse anchor pole-anchor cable pretightning force synergy.The present invention passes through photoelastic experiment systematic difference, pole
The earth shortens experimental period, reduces experimental error, carries out anchor pole-anchor cable synergetical principle and support parameter optimization design
Research.
Brief description of the drawings
Fig. 1 is the structural representation of coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device of the present invention；
Fig. 2 is the optical element secured adjusted schematic diagram in the present invention；
Fig. 3 is the Roadway model secured adjusted schematic diagram in the present invention；
Fig. 4-1 is the rectangular shaped roadways sectional model figure in the present invention；
Fig. 4-2 is another rectangular shaped roadways sectional model figure in the present invention；
Fig. 5-1 is the dome-shaped drift section illustraton of model in the present invention；
Fig. 5-2 is another dome-shaped drift section illustraton of model in the present invention；
Fig. 6-1 is the trapezoidal drift section illustraton of model in the present invention；
Fig. 6-2 is another trapezoidal drift section illustraton of model in the present invention；
Wherein, the camera of 1. experimental bench, 2. crossbeam, 3. base, 4. Roadway model, 5. nut, 6. anchor pole, 7. anchor cable 8.
9. the neck 14. of 12. quarter-wave plate of light source 10. analyzer, 11. polarizer 13. reinforces knob.
Embodiment
Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention will be further described：
As shown in figure 1, coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device of the present invention, including experimental bench 1, experiment
The two ends of platform 1 are connected by two crossbeams 2, and two crossbeams 2 are parallel to each other, and being from left to right sequentially provided with five on two crossbeams 2 can
Along two crossbeams 2 base 3 in axial sliding, a fixed block is fixedly mounted in each upper end of base 3, wherein arranging from left to right
The fixed block of the 3rd base 3 Roadway model 4, and Roadway model 4 are installed by being located at the neck 13 of fixed block upper surface
Fastening and the regulation of height are realized by being located at two reinforcing knobs 14 of the fixed block same side, the Roadway model 4
Crosssection shape design is arrangement anchor pole 6 and the model of anchor cable 7 in rectangle, trapezoidal and dome-shaped, and Roadway model 4, passes through card
Groove 13 installs Roadway model 4, is conveniently replaceable the Roadway model 4 of different section shape, one end of experimental bench 1 is by reinforcing knob 14
Install a camera 8, height and tightness of the reinforcing knob 14 to adjust camera 8 at this, experimental bench 1 it is another
A light source 9, height and fastening of the reinforcing knob 14 to adjust light source 9 at this are installed also by knob 14 is reinforced in one end
Degree, wherein analyzer 10 is installed on the fixed block of the base 3 of the one end of camera 8, the base 3 of close one end of light source 9
Installed on fixed block and quarter-wave plate 12 is installed on polarizer 11, the fixed block of remaining two bases 3, as shown in Fig. 2 peace
Dress analyzer 10, polarizer 11, it is respectively equipped with reinforcing knob 14 on the fixed block of two quarter-wave plates 12, analyzer 10,
Polarizer 11, two quarter-wave plates 12 keep analyzer 10 by adjusting the reinforcing knob 14 of respective relevant position, risen
Polariscope 11, two quarter-wave plates 12 are in sustained height.
Anchor pole 6, the model of anchor cable 7 are embedded in Roadway model 4 by the Roadway model 4 of the present invention in manufacturing process, wherein
Anchor pole 6 is simulated with screw, the fried dough twist body simulation that anchor cable 7 is twisted into thin wire, and anchor pole 6, the termination of anchor cable 7 are provided with screw thread, lead to
Cross tighten nut 5 can to the anchor pole 6 in Roadway model 4, anchor cable 7 apply pretightning force.Pass through the Roadway model of different section shape
4, such as Semicircular arched, trapezoidal, rectangle, and varying number is with inlaying the lane that different combinations are made in the anchor pole of position, anchor cable
Road model 4.It is produced as follows：
1st, the liquid charging stock and curing agent of epoxy resin are pressed 4:1 ratio is mixed evenly, and is then removed with degassing method
Remove bubble therein；
2nd, the mixture slurry of the liquid charging stock of epoxy resin and curing agent is poured into the clean metal grinding tool kept flat；
3rd, anchor pole 7 and anchor cable 6 are embedded in the Roadway model 4 of selected section configuration；
4th, metal grinding tool is put into baking oven, 120 DEG C of temperature is set, toast 4 hours；
5th, metal grinding tool is taken out out of baking oven, Roadway model 4 is stripped taking-up out of metal grinding tool after natural cooling；
6th, from different section shape Roadway model 4 and the anchor pole 6 of varying number, anchor cable 7 carries out various combination, weight
Multiple step 1 arrives step 5.
The present invention combines Roadway model 4 and photoelastic experiment system two parts, using epoxy resin in stress deformation
When produce optically anisotropic feature, according to the optical path difference identified sign difference of the different light in polarization direction；By to difference
The Roadway model 4 of section configuration and varying number and inlay the anchor pole of position, anchor cable and be combined, in specific polarized light field
Observation, different Isochromatic fringes are intuitively observed by camera, and the transmission of the material internal stress of Roadway model 4 is obtained in real time with becoming
Graphic data, obtains the stress state and distribution characteristics of correspondence Roadway model 4, stress state in kind and distribution characteristics can be according to phases
Obtained like theoretical conversion, and then research and analyse anchor pole 6, the synergy of the pretightning force of anchor cable 7.Pass through answering for photoelastic experiment system
With highly shortened experimental period, reduce experimental error, carry out anchor pole-anchor cable synergetical principle and supporting parameter is excellent
Change the research of design.
Meaning optical element of the invention refers to analyzer 10, polarizer 11 and quarter-wave plate 12.
The present invention use process be：
1st, light source 9 is switched on power, light source 9 is opened, adjusts each optical element by reinforcing knob 14, make anchor pole 6, anchor
The light interference phenomena of the stress of rope 7 reaches most preferably；
2nd, Roadway model 4 is put into neck 13, in the opposite side just to light source 9, Roadway model 4 is observed through polarizer
The interference fringe of interior anchor pole 6, the near zone of anchor cable 7, can clearly be observed and anchor pole 6, anchor cable 7 in specific polarized light field
The related Isochromatic fringes of pretightning force, make a record (shape, size and the quantity of striped) and shoot equal difference by camera 8
Line streak photograph；
3rd, remove Roadway model 4, anchor pole, the nut 5 of anchor cable termination tightened with supporting nipper pliers, that is, increase anchor pole 6,
The pretightning force of anchor cable 7, neck 13 is put back to by Roadway model 4, then can clearly be observed now in specific polarized light field
Striped have obvious change compared with before, make a record (shape, size and the quantity of striped) and shoot isodiff
Streak photograph；
4th, the Roadway model 4 of different combinations, repeat step 2 and step 3 are chosen；
5th, light source 9 is closed, necessary accessories are replaced.
Complete after above-mentioned steps, the data of record and isochromatic fringes photo are arranged and preserved, are cooperateed with for the anchor cable 7 of anchor pole 6
The mechanism of action is researched and analysed.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (5)
- The photoelastic experiment device 1. coal mine roadway anchor shaft anchor cable acts synergistically, including experimental bench (1), experimental bench (1) two ends lead to Cross two crossbeams (2) to connect, two crossbeams (2) are parallel to each other, it is characterised in that：From left-hand on two crossbeams (2) The right side, which is sequentially provided with five, to be equipped with fixed block along two crossbeams (2) base (3) in axial sliding, each base (3) upper end, its In the Roadway model of the different section that epoxy resin is made is installed on the fixed block of the 3rd base (3) that arranges from left to right (4) anchor pole (6) and anchor cable (7) model, and in Roadway model (4) are arranged, camera is installed in one end of the experimental bench (1) (8), the other end installs light source (9), wherein analyzer (10) is installed on the fixed block of the base (3) of camera (8) one end, Installed on the fixed block of the base (3) of light source (9) one end on polarizer (11), the fixed block of remaining two bases (3) Quarter-wave plate (12) is installed, the analyzer (10), polarizer (11), two quarter-wave plates (12) are located at same height Degree, the fixed block for installing Roadway model (4) is provided with neck (13), and the fixed block is provided with reinforcing knob (14), Roadway model (4) bottom is fixed in neck (13) by reinforcing knob (14), the polarizer (11), analyzer (10), two quarter-wave plates (12) are also connected by reinforcing knob (14) with respective fixed block respectively, the light source (9) Also it is connected respectively by reinforcing knob (14) with experimental bench (1) with camera (8)；The technical process of the Roadway model (4) is：1st, the liquid charging stock and curing agent of epoxy resin are pressed 4:1 ratio is mixed evenly, and then removes it with degassing method In bubble；2nd, the mixture slurry of the liquid charging stock of epoxy resin and curing agent is poured into the clean metal grinding tool kept flat；3rd, anchor pole 7 and anchor cable 6 are embedded in the Roadway model 4 of selected section configuration；4th, metal grinding tool is put into baking oven, 120 DEG C of temperature is set, toast 4 hours；5th, metal grinding tool is taken out out of baking oven, Roadway model 4 is stripped taking-up out of metal grinding tool after natural cooling.
- The photoelastic experiment device 2. coal mine roadway anchor shaft anchor cable according to claim 1 acts synergistically, it is characterised in that：Anchor pole (6) simulated with screw, the fried dough twist body simulation that anchor cable (7) is twisted into thin wire, and anchor pole (6), anchor cable (7) termination are provided with spiral shell Line, pretightning force can be applied by tightening nut (5) to the anchor pole (6) in Roadway model (4), anchor cable (7).
- The photoelastic experiment device 3. coal mine roadway anchor shaft anchor cable according to claim 2 acts synergistically, it is characterised in that：It is described Roadway model (4) section is rectangular.
- The photoelastic experiment device 4. coal mine roadway anchor shaft anchor cable according to claim 2 acts synergistically, it is characterised in that：It is described Roadway model (4) section is in dome-shaped.
- The photoelastic experiment device 5. coal mine roadway anchor shaft anchor cable according to claim 2 acts synergistically, it is characterised in that：It is described Roadway model (4) section is trapezoidal.
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| CN201510009683.1A CN104568253B (en) | 2015-01-08 | 2015-01-08 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
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| CN201510009683.1A CN104568253B (en) | 2015-01-08 | 2015-01-08 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
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| CN104568253B true CN104568253B (en) | 2017-09-12 |
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| CN108036882B (en) * | 2018-02-12 | 2022-07-08 | 中国矿业大学(北京) | Photoelastic experimental device for observing stress of top coal caving mining |
| CN108827511B (en) * | 2018-05-30 | 2020-01-31 | 中国科学院高能物理研究所 | Measuring method and measuring device for internal stress of amorphous transparent material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202033139U (en) * | 2010-11-08 | 2011-11-09 | 李陆容 | Polarizing stress meter and photoelasticimeter |
| CN103698062A (en) * | 2013-10-18 | 2014-04-02 | 中山大学 | Novel photoelastic testing method for inhomogeneous medium |
| CN204087654U (en) * | 2014-10-09 | 2015-01-07 | 赵治安 | A kind of novel optical bench |
| CN204330192U (en) * | 2015-01-08 | 2015-05-13 | 安徽理工大学 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4997385B2 (en) * | 2005-05-06 | 2012-08-08 | 国立大学法人名古屋大学 | Catheter surgery simulator |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202033139U (en) * | 2010-11-08 | 2011-11-09 | 李陆容 | Polarizing stress meter and photoelasticimeter |
| CN103698062A (en) * | 2013-10-18 | 2014-04-02 | 中山大学 | Novel photoelastic testing method for inhomogeneous medium |
| CN204087654U (en) * | 2014-10-09 | 2015-01-07 | 赵治安 | A kind of novel optical bench |
| CN204330192U (en) * | 2015-01-08 | 2015-05-13 | 安徽理工大学 | Coal mine roadway anchor shaft anchor cable synergy photoelastic experiment device |
Non-Patent Citations (1)
| Title |
|---|
| 桁梁锚杆支护及其光弹性模型实验;梁桂长等;《工业安全与环保》;19821231(第5期);第1栏-第3栏 * |
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