CN105443123B - A kind of automatic coal cutting simulation system for similarity simulation experiment - Google Patents
A kind of automatic coal cutting simulation system for similarity simulation experiment Download PDFInfo
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- CN105443123B CN105443123B CN201510768545.1A CN201510768545A CN105443123B CN 105443123 B CN105443123 B CN 105443123B CN 201510768545 A CN201510768545 A CN 201510768545A CN 105443123 B CN105443123 B CN 105443123B
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- 238000004088 simulation Methods 0.000 title claims abstract description 111
- 239000003245 coal Substances 0.000 title claims abstract description 102
- 238000005065 mining Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 17
- 239000011435 rock Substances 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000032798 delamination Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 11
- 230000033228 biological regulation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
- E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of automatic coal cutting simulation system for similarity simulation experiment, hydraulic support analogue means including coal mining analogue means and positioned at rear side, the hydraulic support analogue means includes bottom plate (1), top plate (2), stress meter, drive device and baffle plate (3), wherein, the top and bottom of the stress meter are connected with the top plate (2) and bottom plate (1) respectively, the upper end of the baffle plate (3) is connected with the rear end of the top plate (2), angle between the baffle plate (3) and the top plate (2) is obtuse angle, drive device drives the hydraulic support analogue means movement；Angle of the top plate (2) between horizontal plane is 3 °, and the rear end of the top plate (2) is higher than front end, and the angle between the baffle plate (3) and the top plate (2) is 150 °.Automatic coal cutting simulation system of the present invention for similarity simulation experiment can improve experiment accuracy, make experiment more intelligent.
Description
Technical field
The present invention relates to mining machinery field, is used to simulate the real for analog simulation of scene coal mining more particularly to a kind of
The automatic coal cutting simulation system tested.
Background technology
Analog simulation model and device are used to simulate subterranean coal digging process, by simulating hand excavation coal seam and coal seam
The situation of change of top rock stratum, to speculate the situation of change of Roof Rock Strata of Coal Seam in actual digging process, so referred to as similar
Model.
But there is following defect in scale model of the prior art：
First, digging process generally excavates certain distance coal seam (such as manually to take thin iron rod to excavate every two hours
50mm or so), this method does not meet the similar speed that pushes to adopt of analog simulation (according to 100:1 likelihood ratio, this means that coal
Charcoal once pushes to adopt forward 5m, and this is unscientific), i.e., excavated according to certain speed, and a general model needs three days three
Night above Time Continuous excavates, and this requires that experimenter also needs to excavate once every two hours at night again, an experiment
Generally require 3-5 names and excavate personnel, workload is very big, very inconvenient.
Second, for staff when excavating, due to the typically wide 300mm of scale model device, in middle part, model is relative
It is hard to just look at unclear, wrong top plate or bottom plate etc. are often dug, is had a great influence for the result of experiment.
3rd, sometimes model relative rigid is using very big strength, it is necessary to could be dug, in a model between position, very
To need beat could dig move, it is this shake, beat or it is unconscious touch top plate, it is all very big equivalent in actual production
Bump influence, therefore had a great influence for the result such as experiments of some research top board structures.
Finally, analog simulation mainly studies the stress characteristics of roof and floor at present, and top plate is caving feature etc., but at present also
Without working face face analogue means and its migration and stress monitoring system and method can be simulated, for similar mould
The result of draft experiment has a great influence.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind can improve experiment accuracy, substantially reduce working strength,
Make the more intelligentized automatic coal cutting simulation system for similarity simulation experiment of experiment.
A kind of automatic coal cutting simulation system for similarity simulation experiment, it is arranged in analog simulation model, it is described similar
Simulation model include support body, the coal seam that is arranged on the support body and be arranged on its bottom both sides support bar, be arranged at institute
Other rock stratum of coal seam upper and lower part are stated, the automatic coal cutting simulation system for similarity simulation experiment is arranged on the coal
In layer, run on the support bar, the automatic coal cutting simulation system for similarity simulation experiment includes simulation dress of mining
Put and the hydraulic support analogue means positioned at rear side, the hydraulic support analogue means include bottom plate, top plate, stress metering
Device, drive device and baffle plate, wherein, the top and bottom of the stress meter are connected with the top plate and bottom plate respectively, institute
The upper end for stating baffle plate is connected with the rear end of the top plate, and the angle between the baffle plate and the top plate is obtuse angle, drive device
The hydraulic support analogue means is driven to move；Angle between the top plate and horizontal plane is 3 °, before the rear end of top plate is higher than
End, the angle between the baffle plate and the top plate are 150 °.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein the stressometer measuring device includes
First housing and the inner prop being provided at its inner portion, the inner prop can freely slide up and down in the first shell body, the inner prop
Top be fixedly connected with the top plate, be connected with strain films in the bottom of first housing, and the strain films cover
The bottom of first housing, air cavity is formed between the strain films, first housing and the inner prop, in the air cavity
Air bag is provided with, the air bag is sealed to form by plastic film, and the strain films are connected by data wire with deformeter, the strain
Instrument is connected with computer.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein the bottom of the first shell body
The second housing is connected, the thickness of second housing is less than the thickness of first housing, the bottom connection of second housing
Supporting plate；
The inner prop, first housing, second housing are cylinder, and an end connector of the data wire is set
On the strain films on the bottom of first housing, be provided with through hole on second housing, the data wire it is another
One end passes from the through hole, is connected with the deformeter；Multiple air-vents are evenly arranged with second housing.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein the stressometer measuring device also wraps
Arrangement for adjusting height is included, the arrangement for adjusting height is made up of the external spiral bar and inside spin bar being threadedly coupled, the inside spin
The lower end of bar is fixed on the bottom plate, and the upper end of the external spiral bar is connected with the supporting plate, on the side of the supporting plate
Edge is provided with neck, and the card being engaged with the neck is fixed with the top of the external spiral bar, and the card is arranged on institute
State in neck, and can freely be rotated in the neck.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein the front end of the inner prop and institute
It is 50mm to state the distance between front end of top plate, and the horizontal range of the bottom of the baffle plate between the rear end of the bottom plate is
15mm。
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein, it is in a free state, described
The distance between the top of inner prop and the top of first housing are 7mm, a diameter of 8mm of the inner prop, are highly 15mm,
The thickness of first housing is 6mm, and the thickness of second housing is 1.5mm, external diameter and first housing external diameter one
Cause, the height of the arrangement for adjusting height is 15mm, and the length of the bottom plate is 70mm, and the length of the top plate is 70mm, institute
The length for stating baffle plate is 70mm, and wheel body is provided with the bottom of the bottom plate, and the wheel body is connected with the drive device.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein, the stress meter is
Two be arranged side by side.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein, the coal-winning machine simulation dress
Put including roller, drum drive, coal mining machine actuating device, the roller is divided into symmetrical two parts, and centre is tooth
Screw thread is taken turns, is connected with the drum drive, is provided with helical blade on which cylinder, at the edge of the helical blade
Spike-tooth is evenly arranged with, the spike-tooth has sharp keen tip, and tip direction is outwards set, the spiral shell on two parts roller of left and right
The direction of rotation of vane piece is oppositely arranged, i.e., is symmetrical arranged relative to the gear screw thread.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein, on which cylinder uniformly
It is provided with multiple coal brushes, the long 2mm of height of the length of the coal brush with the helical blade；The coal-winning machine analogue means also wraps
Wheel body is included, the wheel body is connected with the coal mining machine actuating device.
Automatic coal cutting simulation system of the present invention for similarity simulation experiment, wherein, the stress meter is
Two be arranged side by side.
The application method of automatic coal cutting simulation system of the present invention for similarity simulation experiment, including following step
Suddenly：
(A) experimental tool, material and instrument and equipment are got out；
(B) coal rock layer simulated is needed according to the principle of similitude, layering laying, it is ensured that the coal rock layer aspect of laying is straight,
Need the rock stratum of monitor stress to lay foil gauge, the data wire of the foil gauge is directed towards side, from similar analogue means
Passed in two mother rib lateral rotundums, while side guard plate is installed；
(C) air-dry, conserve model one week, during which by both sides side corresponding to the part side guard plate of analog simulation device and coal seam
Backplate unloads；
(D) load lacked is compensated, by lever or counterweight iron block, is added on overlying rock aspect to compensate missing
Load；
(E) support frame is installed on analog simulation device, support frame as described above is parallel with seat earth, is arranged on the coal seam
Both sides, the supported on both sides frame distance automatic each 15mm of coal cutting simulation system for being used for similarity simulation experiment；
(F) what one 130mm of hand excavation grew cuts eye, installs package unit, adjustment screw rod height, makes top plate hydraulic pressure branch
Frame analogue means top plate contacts with roof, according to the actual exploitation rate in colliery, moves frame apart from determining device parameter, connects number
According to line, switch on power, excavate model；
(G) in digging process, roof pressure and roof delamination data is monitored, stored and result is finally divided
Analysis.
The automatic coal cutting simulation system difference from prior art that the present invention is used for similarity simulation experiment is：
The automatic coal cutting simulation system that the present invention is used for similarity simulation experiment has the following advantages that：
First, automatic excavation, self-propelled coal mining analogue means are devised, it is possible to achieve coal is actual opens for simulation completely
Adopt speed and excavate coal seam.Without manual operation, the science of experiment is improved, and saves a large amount of manual operation amounts；
Secondly, the hydraulic support analogue means that can monitor roof pressure is devised, top plate after coal seam is excavated can be monitored and answered
Power feature, with actual monitoring value as a comparison, analog simulation result precision can be reacted well；
Finally, hydraulic support drive device is devised, the actual shifting frame situation in colliery can be simulated to promote support, Ke Yigeng
Big degree improves the degree of accuracy of similarity simulation experiment.
The automatic coal cutting simulation system for similarity simulation experiment of the present invention is described further below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram for the automatic coal cutting simulation system that the present invention is used for similarity simulation experiment；
Fig. 2 is the side view for the automatic coal cutting simulation system that the present invention is used for similarity simulation experiment；
Fig. 3 is the structural representation of the stress meter for the automatic coal cutting simulation system that the present invention is used for similarity simulation experiment
Figure；
Fig. 4 is the structural representation of the coal-winning machine for the automatic coal cutting simulation system that the present invention is used for similarity simulation experiment.
Embodiment
Embodiment 1
As shown in Figure 1 to 4, a kind of automatic coal cutting simulation system for similarity simulation experiment, is arranged on analog simulation
In model, analog simulation model include support body, the coal seam that is arranged on support body and be arranged on its bottom both sides support bar, if
Other rock stratum of coal seam upper and lower part are placed in, the automatic coal cutting simulation system for similarity simulation experiment is arranged in coal seam,
Run on support bar, the automatic coal cutting simulation system for similarity simulation experiment includes coal mining analogue means and positioned at rear side
Hydraulic support analogue means, hydraulic support analogue means includes bottom plate 1, top plate 2, stress meter, drive device and baffle plate
3, wherein, the top and bottom of stress meter are connected with top plate 2 and bottom plate 1 respectively, the upper end of baffle plate 3 and the rear end of top plate 2
It is connected, the angle between baffle plate 3 and top plate 2 is obtuse angle, and drive device driving hydraulic support analogue means moves.
Stress meter is two be arranged side by side, and stress meter includes the first housing 4 and is provided at its inner portion interior
Post 5, inner prop 5 can freely slide up and down in the first housing 4, and with peripheral shell sliding friction, inner prop and case surface are very
Smooth, frictional force is minimum, does not influence stress measurement；The top of inner prop 5 is fixedly connected with top plate 2, is connected in the bottom of the first housing 4
Strain films 6 are connected to, and strain films 6 cover the bottom of the first housing 4, and gas is formed between strain films 6, the first housing 4 and inner prop 5
Chamber, air bag 7 being provided with air cavity, air bag 7 is sealed to form by plastic film, and strain films 6 are connected by data wire 8 with deformeter,
Deformeter is connected with computer.Corresponding deformation is produced according to the size of top air cavity pressure, strain is transferred to by data wire 8
On instrument, computer is ultimately connected to, data are displayed and stored on computer；
The bottom of first housing 4 connects the second housing 9, and the thickness of the second housing 9 is less than the thickness of the first housing 4, and second
The bottom connection supporting plate 10 of housing 9；
Inner prop 5, the first housing 4, the second housing 9 are cylinder, and an end connector of data wire 8 is arranged on the first housing 4
Bottom on strain films 6 on this design be prevent the end of a thread self gravitation influence strain films deformation, so as to ensure measuring accuracy；
Through hole is provided with second housing 9, the other end of data wire 8 is passed from through hole, is connected with deformeter；On the second housing 9
It is evenly arranged with multiple air-vents.
Stress meter also includes arrangement for adjusting height, and arrangement for adjusting height is by the external spiral bar 11 being threadedly coupled and interior spiral shell
Swing arm 12 is formed, and the lower end of inside spin bar 12 is fixed on bottom plate 1, and the upper end of external spiral bar 11 is connected with supporting plate 10, is propping up
The edge of fagging 10 is provided with neck 13, and the top of external spiral bar 11 is fixed with the card 14 being engaged with neck 13, card 14
It is arranged in neck 13, and can be freely rotated in neck 13.
Angle between top plate 2 and horizontal plane is 3 °, and the rear end of top plate 2 be higher than front end, and it is to allow hydraulic pressure branch that this, which is designed,
Frame analogue means can fully simulate the process that support moves frame with seam mining, and the angle number of degrees are too small or angle is zero, hydraulic pressure
Rack plate may encounter roof, can not promote；The angle number of degrees are too big, then cause top plate pressure-bearing unstable, meter
Institute's pressure measurement force value and actual value have deviation.Angle between baffle plate 3 and top plate 2 is 150 °, and the design of baffle angle and length can
To ensure that broken sandstone can be slipped to seat earth, or monoblock sandstone is touched on baffle plate, as support is moved along,
Meter measurement is not influenceed.The distance between the front end of inner prop 5 and the front end of top plate 2 are 50mm, it is ensured that during mobile support,
Coal mining analogue means can play a protective role under top plate.The bottom of baffle plate 3 between the rear end of bottom plate 1 it is horizontal away from
From for 15mm, it is ensured that internal stent will not enter sandstone, influence to use.
In a free state, the distance between the top of inner prop 5 and the top of the first housing 4 are 7mm, and difference in height can protect
When demonstrate,proving top plate 2 by top pressure, top plate 2 can sink together with inner prop 5, so as to reach the purpose of measurement, while when super
When crossing 7mm deflection, now, pressure value can prevent top plate 2 from further declining more than 0.3Mpa, the first housing 4, protection strain
Film 6 is not destroyed by large deformation.
A diameter of 8mm of inner prop 5, it is highly 15mm, the thickness of the first housing 4 is 6mm, and the thickness of the second housing 9 is
1.5mm, external diameter is consistent with the external diameter of the first housing 4, and the height of arrangement for adjusting height is 15mm, and the length of bottom plate 1 is 70mm, top
The length of plate 2 is 70mm, and the length of baffle plate 3 is 70mm, the bottom of bottom plate 1 is provided with wheel body, wheel body is connected with drive device.
In use, according to the realistic simulation height in experiment coal seam, rotation height regulation external spiral bar 11, height adjusts outer spiral shell
Swing arm 11 is connected with the spiral of height regulation inside spin bar 12, and rotation height regulation external spiral bar 11 can be rotated so as to increase or drop
The height of low hydraulic support analogue means.The space formed between supporting plate 10, the housing 9 of strain films 6 and second facilitates strain films 6
Deformation, surrounding have several air-vents, for holding and extraneous UNICOM, ensure as normal atmosphere (An) pressure.
Coal-winning machine analogue means includes roller 15, drum drive, coal mining machine actuating device, wherein, roller 15, which divides, is
Symmetrical two parts, centre is gear screw thread 16, is connected with drum drive 17, helical-blade is provided with roller 15
Piece 18, is evenly arranged with spike-tooth 19 at the edge of helical blade 18, and spike-tooth 19 has a sharp keen tip, and tip direction is to peripheral hardware
Put, the direction of rotation of the helical blade 18 on left and right two parts roller 15 is oppositely arranged, i.e., is symmetrically set relative to gear screw thread 16
Put.
It is evenly arranged with multiple coal brushes 20 on roller 15, the long 2mm of height of the length of coal brush 20 with helical blade 18；Adopt
Coal machine analogue means also includes wheel body, and wheel body is connected with coal mining machine actuating device.
The major function of roller 15 is cutting coal seam, while the coal of cutting is transported beyond analog simulation device.Coal-winning machine
Roller is rotated down, and gear screw thread 16 is connected with the motor gear of drum drive 17, helical blade 18 and spike-tooth 19 1
Cutting coal seam is played, while is conveyed coal to device both sides using helical blade 18, more clusters that coal brush 20 is made up of plastics are moulded
Expect thin rod, the cinder of bottom plate can be cleaned out, do not allow ground coal to influence experiment effect.
The application method of the automatic coal cutting simulation system for similarity simulation experiment of the present invention, comprises the following steps：
A, experimental tool, material and instrument and equipment are got out；
B, the coal rock layer simulated is needed according to the principle of similitude, layering laying, it is ensured that the coal rock layer aspect of laying is straight,
Need the rock stratum of monitor stress to lay foil gauge, the data wire of foil gauge is directed towards side, justify from similar analogue means both sides
Passed in hole, while side guard plate is installed；
C, air-dry, conserve model one week, during which by both sides side corresponding to the part side guard plate of analog simulation device and coal seam
Backplate unloads；
D, the load lacked is compensated, by lever or counterweight iron block, is added on overlying rock aspect to compensate missing
Load；
Support frame is installed on analog simulation device, support frame as described above is parallel with seat earth, is arranged on the coal seam E,
Both sides, the supported on both sides frame distance automatic each 15mm of coal cutting simulation system for being used for similarity simulation experiment；
What F, one 130mm of hand excavation grew cuts eye, installs package unit, adjustment screw rod height, makes top plate hydraulic pressure branch
Frame analogue means top plate contacts with roof, according to the actual exploitation rate in colliery, moves frame apart from determining device parameter, connects number
According to line, switch on power, excavate model；
G, in digging process, roof pressure and roof delamination data is monitored, stored and result is finally divided
Analysis.
Embodiment above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row limits, and on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art make to technical scheme
The various modifications gone out and improvement, it all should fall into the protection domain of claims of the present invention determination.
Claims (6)
- A kind of 1. application method of automatic coal cutting simulation system for similarity simulation experiment, it is characterised in that：Including following step Suddenly：(A) experimental tool, material and instrument and equipment are got out；The instrument and equipment includes automatic coal cutting simulation system, and the automatic coal cutting simulation system is arranged on analog simulation model In, the analog simulation model includes the support of support body, the coal seam and the both sides for being arranged on its bottom that are arranged on the support body Bar, it is arranged at other rock stratum of the coal seam upper and lower part, the automatic coal cutting simulation system for similarity simulation experiment It is arranged in the coal seam, is run on the support bar, the automatic coal cutting simulation system bag for similarity simulation experiment Include coal mining analogue means and the hydraulic support analogue means positioned at rear side, the hydraulic support analogue means include bottom plate (1), Top plate (2), stress meter, drive device and baffle plate (3), wherein, the top and bottom of the stress meter respectively with institute State top plate (2) and bottom plate (1) connection, the upper end of the baffle plate (3) is connected with the rear end of the top plate (2), the baffle plate (3) and Angle between the top plate (2) is obtuse angle, and drive device drives the hydraulic support analogue means movement；The top plate (2) Angle between horizontal plane is 3 °, and the rear end of the top plate (2) is higher than front end, between the baffle plate (3) and the top plate (2) Angle be 150 °；The stress meter includes the first housing (4) and the inner prop (5) being provided at its inner portion, and the inner prop (5) can be described First housing is freely slided up and down in (4), and the top of the inner prop (5) is fixedly connected with the top plate (2), in the first shell The bottom of body (4) is connected with strain films (6), and the strain films (6) cover the bottom of first housing (4), described to answer Become between film (6), first housing (4) and the inner prop (5) and form air cavity, air bag (7), institute are provided with the air cavity Air bag (7) is stated to be sealed to form by plastic film, the strain films (6) are connected by data wire (8) with deformeter, the deformeter with Computer connects；The bottom of first housing (4) connects the second housing (9), and the thickness of second housing (9) is less than the first shell The thickness of body (4), the bottom connection supporting plate (10) of second housing (9)；The inner prop (5), first housing (4), second housing (9) are cylinder, one end of the data wire (8) Joint is arranged on the strain films (6) on the bottom of first housing (4), is provided with second housing (9) logical Hole, the other end of the data wire (8) are passed from the through hole, are connected with the deformeter；On second housing (9) It is evenly arranged with multiple air-vents；The stress meter also includes arrangement for adjusting height, and the arrangement for adjusting height is by the external spiral bar (11) that is threadedly coupled Formed with inside spin bar (12), the lower end of the inside spin bar (12) is fixed on the bottom plate (1), the external spiral bar (11) Upper end be connected with the supporting plate (10), neck (13), the external spiral bar are provided with the edge of the supporting plate (10) (11) card (14) being engaged with the neck (13) is fixed with the top of, the card (14) is arranged on the neck (13) It is interior, and can freely be rotated in the neck (13)；(B) coal rock layer simulated is needed according to the principle of similitude, layering laying, it is ensured that the coal rock layer aspect of laying is straight, is needing Want the rock stratum of monitor stress to lay foil gauge, the data wire of the foil gauge is directed towards side, from for similarity simulation experiment The automatic mother rib lateral rotundum of coal cutting simulation system two in pass, while side guard plate is installed；(C) air-dry, conserve model one week, during which by the part side guard plate for the automatic coal cutting simulation system of similarity simulation experiment With coal seam corresponding to both sides side guard plate unload；(D) load lacked is compensated, by lever or counterweight iron block, is added on overlying rock aspect with the load of compensation missing Lotus；(E) support frame, support frame as described above and seat earth are installed in the automatic coal cutting simulation system for similarity simulation experiment It is parallel, it is arranged on the both sides in the coal seam, the supported on both sides frame distance automatic coal cutting simulation system for similarity simulation experiment Unite each 15mm；(F) what one 130mm of hand excavation grew cuts eye, installs package unit, adjustment screw rod height, fills hydraulic support simulation Top set plate contacts with roof, according to the actual exploitation rate in colliery, moves frame apart from determining device parameter, connects data wire, connect Energization source, excavate model；(G) in digging process, roof pressure and roof delamination data is monitored, stored and ultimate analysis is carried out to result.
- 2. the application method of the automatic coal cutting simulation system according to claim 1 for similarity simulation experiment, its feature It is：The distance between the front end of the inner prop (5) and the front end of the top plate (2) are 50mm, the bottom of the baffle plate (3) away from It is 15mm from the horizontal range between the rear end of the bottom plate (1).
- 3. the application method of the automatic coal cutting simulation system according to claim 2 for similarity simulation experiment, its feature It is：In a free state, the distance between top of the top of the inner prop (5) and first housing (4) is 7mm, institute A diameter of 8mm of inner prop (5) is stated, is highly 15mm, the thickness of first housing (4) is 6mm, second housing (9) Thickness is 1.5mm, and external diameter is consistent with the external diameter of first housing (4), and the height of the arrangement for adjusting height is 15mm, described The length of bottom plate (1) is 70mm, and the length of the top plate (2) is 70mm, and the length of the baffle plate (3) is 70mm, at the bottom The bottom of plate (1) is provided with wheel body, and the wheel body is connected with the drive device.
- 4. the application method of the automatic coal cutting simulation system according to claim 3 for similarity simulation experiment, its feature It is：The coal mining analogue means includes roller (15), drum drive, coal mining machine actuating device, wherein, the roller (15) it is divided into symmetrical two parts, centre is gear screw thread (16), is connected with the drum drive (17), described Helical blade (18) is provided with roller (15), spike-tooth (19) is evenly arranged with the edge of the helical blade (18), it is described Spike-tooth (19) has sharp keen tip, and tip direction is outwards set, the helical blade (18) on left and right two parts roller (15) Direction of rotation it is oppositely arranged, i.e., be symmetrical arranged relative to the gear screw thread (16).
- 5. the application method of the automatic coal cutting simulation system according to claim 4 for similarity simulation experiment, its feature It is：Multiple coal brushes (20) are evenly arranged with the roller (15), the length of the coal brush (20) is than the helical blade (18) the long 2mm of height.
- 6. the application method of the automatic coal cutting simulation system according to claim 5 for similarity simulation experiment, its feature It is：The stress meter is two be arranged side by side.
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| CN107965321A (en) * | 2017-11-28 | 2018-04-27 | 新疆大学 | A kind of automatic continuous excavating device of physical simulation experiment |
| CN109339843B (en) * | 2018-09-05 | 2022-02-11 | 安徽理工大学 | Support running gear suitable for similar simulation coal petrography excavation |
| CN109707418B (en) * | 2019-03-08 | 2023-06-09 | 安徽理工大学 | Simulation support for measuring roof pressure by ore pressure simulation experiment |
| CN110540008A (en) * | 2019-09-29 | 2019-12-06 | 中煤张家口煤矿机械有限责任公司 | Spiral drum type coal cleaning device and scraper elevating conveyor |
| CN110748382A (en) * | 2019-10-10 | 2020-02-04 | 天地科技股份有限公司 | Stress monitoring method and device for goaf |
| CN112879002B (en) * | 2021-04-29 | 2021-07-13 | 中国矿业大学(北京) | Coal mine multifunctional model test mining device and method |
| CN116213029A (en) * | 2022-12-31 | 2023-06-06 | 天地上海采掘装备科技有限公司 | Crushing cylinder for onboard crushing device of coal mining machine, production method of crushing cylinder and crushing device |
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