CN205562320U - Coal petrography cut test device - Google Patents
Coal petrography cut test device Download PDFInfo
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- CN205562320U CN205562320U CN201620306502.1U CN201620306502U CN205562320U CN 205562320 U CN205562320 U CN 205562320U CN 201620306502 U CN201620306502 U CN 201620306502U CN 205562320 U CN205562320 U CN 205562320U
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- gripper shoe
- top board
- rocking arm
- cylinder
- workbench
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Abstract
The utility model provides a coal petrography cut test device, including the elevating platform, the elevating platform is equipped with the roof, the bottom plate, be equipped with between roof and the bottom plate and support pneumatic cylinder and backup pad group, be equipped with the workstation on the roof, be equipped with the thermal infrared imager on the workstation, one side of workstation articulates has the rocking arm, be equipped with the acoustic emission signal sensor on the rocking arm, the end of rocking arm is fixed with cutting mechanism, cutting mechanism includes the cylinder, the periphery of cylinder is equipped with the pick, be used for the cut rib, be equipped with the foil gage on the pick, be equipped with three -dimensional planted agent force transducer in the rib, the invention utilizes the acoustic emission signal sensor, the thermal infrared imager, foil gage and three -dimensional planted agent force transducer gather the signal of cut in -process, and handle different signals, and then the analysis learns that the coal petrography that the cut was distinguished distributes, when meetting the rock, the lift of control elevating platform, and then regulation cutting mechanism's height, thereby make the regional normal cut of cutting mechanism at the coal, and can not cause the pick to damage to the rock by the cut.
Description
Technical field
This utility model relates to coal petrography cut technical field, particularly relates to a kind of coal petrography cutting test device.
Background technology
At present, the Altitude control of flitting, generally based on Artificial Control, i.e. coal-winning machine driver vision and audition judges
The duty of coal-winning machine, is controlled with the vertical height to cylinder.Due to the work under bad environment of coal-winning machine, serious coal
Dirt and noise make coal-winning machine driver be difficult to accurately and in time judge the cut state of coal-winning machine, not to mention it is high to adjust cylinder in time
Spend.Now, if in thin seam working surface, coal-winning machine be easy in the course of the work will cut to roof and floor rock,
Cause the abrasion of cylinder pick and the damage of other parts；Highly gassy mine is easily caused to gas explosion, form serious accident.
If it addition, the position adjustment of cylinder is too cautious, then easily causes top ground coal left too much, reduce the rate of extraction, cause the biggest
The wasting of resources.
Therefore automatic lifting of shearer is one of key technology realizing coal work automatization, it is achieved the automatic tune of coal mining machine roller
Height can alleviate the abrasion of cylinder, increase coal mine production safety coefficient.But coal mining machine roller cutting course and complexity thereof, work
Environment is quite severe, and is limited to the requirement of explosion proof of test instrunment, the signal on coal-winning machine is acquired be one all the time and is difficult to solve
Problem certainly.Some R&D institutions often adopt and experimentally simulate coal mining machine roller cutting course now, thus record
Test data, instructs actual production.The overall test device that presently, there are, coal-winning machine used, rib test specimen and corollary equipment are wanted
Spending substantial contribution, the cycle of carrying out a test is longer, and construction test site necessarily takies a large amount of place, for general scientific research
Unit is difficult to accomplish.Therefore, it is necessary to a kind of preferably coal-winning machine cutting test device of design, to solve the problems referred to above.
Utility model content
The problem existed for prior art, this utility model provides one simulation coal petrography cutting course, during collection coal petrography cut
Data signal, analyzes the coal petrography cutting test device of institute's cut region coal petrography distribution.
To achieve these goals, this utility model adopts the following technical scheme that
A kind of coal petrography cutting test device, including lifting platform, described lifting platform is provided with top board, base plate, described top board and the described end
Being provided with supporting cylinder and gripper shoe group between plate, described supporting cylinder withstands on described top board, and described top board can be driven to lift,
Described gripper shoe group is articulated between described top board and described base plate, and described top board is provided with workbench, the bottom of described workbench
Being provided with slide block, described slide block is installed on described top board on the guide rail arranged, and the side of described workbench is provided with driving motor, institute
Stating driving motor and be connected to leading screw, described leading screw is installed in described workbench, drives described leading screw by described driving motor, enters
And driving described workbench to move along described guide rail, described workbench is provided with thermal infrared imager, and the side of described workbench is hinged
Having rocking arm, described rocking arm to be provided with acoustic emission signal sensor, the end of described rocking arm is fixed with cutting mechanism, described cutting machine
Structure includes that cylinder, the periphery of described cylinder are provided with pick, and for cut rib, described pick is provided with foil gauge, described rib
Inside being provided with three-dimensional internal stress sensor, described cylinder is provided with cutting motor away from the side of rib.
Further, described gripper shoe group is provided with multiple, and each described gripper shoe group includes the first gripper shoe that intersection is arranged in X-shaped
With the second gripper shoe, the infall of described first gripper shoe and described second gripper shoe is provided with support shaft, described first gripper shoe
Two ends are articulated and connected in described top board and described base plate, and the two ends of described second gripper shoe are provided with pulley, can be in described top board and institute
State and move on the slide rail arranged on base plate.
Further, described gripper shoe group is provided with four, is symmetrically distributed between described top board and described base plate, and described first supports
The bottom of plate is positioned at four corners of described base plate, and the top of described second gripper shoe is positioned at four corners of described top board.
Further, it is provided with the first electric pushrod between described first gripper shoe and described second gripper shoe, when described supporting cylinder
During lifting, described first electric pushrod promotes to be packed up between described first gripper shoe and described second gripper shoe or diverges, when described
When supporting cylinder stops, described first electric pushrod stops locking the position of described first gripper shoe and described second gripper shoe.
Further, the bottom of described guide rail is installed on described top board, its top camber protruding upward, and described slide block set is located at institute
State on guide rail, can move along described guide rail.
Further, described leading screw is located in the middle part of the bottom surface of described workbench, and the two ends of described leading screw are respectively by a block supports.
Further, laterally protruding second electric pushrod that is provided with in the side of described workbench, the end of described second electric pushrod is vertical
Being provided with lifter plate, described lifter plate is resisted against the bottom surface of described rocking arm, and described rocking arm bottom surface is set to arc, and described second electronic pushes away
Promoting described lifter plate transverse shifting during bar work, the end face of described lifter plate moves along described rocking arm bottom surface, controls described rocking arm
Rotation.
Further, described cylinder is connected to described rocking arm by connecting shaft, and one end of described connecting shaft is provided with decelerator, described in subtract
Speed device is connected to described cutting motor, and the other end of described connecting shaft is connected to described cylinder.
The beneficial effects of the utility model:
This utility model utilizes acoustic emission signal sensor, thermal infrared imager, foil gauge and three-dimensional internal stress sensor to gather and cuts
Signal during cutting, and unlike signal is processed, and then analyze the coal petrography distribution learning cut district of institute, when running into rock
Time, controlling the lifting of lifting platform, the height of regulation cutting mechanism, so that cutting mechanism is at the normal cut in the region of coal, and not
Pick can be caused to damage to rock by cut.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this utility model coal petrography cutting test device；
Fig. 2 is the structural representation of lifting platform in Fig. 1；
Fig. 3 is workbench and the structural representation of cutting mechanism in Fig. 1；
Fig. 4 is the structural representation of pick in Fig. 3；
Fig. 5 is the structural representation of this utility model three-dimensional internal stress sensor；
Fig. 6 is the schematic diagram that this utility model three-dimensional internal stress sensor is arranged in rib；
In figure, 1 rib, 2 cylinders, 3 picks, 4 foil gauges, 5 decelerators, 6 cutting motors, 7 rocking arms,
8 acoustic emission signal sensors, 9 workbench, 10 thermal infrared imagers, 11 slide blocks, 12 guide rails, 13 leading screws, 14
Bracer, 15 drive motors, 16 second electric pushrods, 17 lifter plates, 18 top boards, 19 base plates, 20
Support hydraulic cylinder, 21 first gripper shoes, 22 second gripper shoes, 23 pulleys, 24 slide rails, 25 support shafts, 26 the
One electric pushrod, 27 three-dimensional internal stress sensors.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole enforcement
Example.Based on the embodiment in this utility model, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into this utility model protection scope.
It is to be appreciated that directional instruction (such as up, down, left, right, before and after ...) in this utility model embodiment
It is only used for explanation relative position relation under a certain particular pose (as shown in drawings) between each parts, motion conditions etc., as
When really this particular pose changes, then directionality instruction changes the most therewith.
It addition, the description relating to " first ", " second " etc. in this utility model be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", "
Two " feature can express or implicitly include at least one this feature.It addition, the technical scheme between each embodiment can
To be combined with each other, but must be based on those of ordinary skill in the art are capable of, when phase occurs in the combination of technical scheme
Contradiction will be understood that the combination of this technical scheme does not exists when maybe cannot realize mutually, the protection model not required at this utility model
Within enclosing.
Such as Fig. 1, this utility model provides a kind of coal petrography cutting test device, including supporting mechanism, walking mechanism and cutting mechanism,
Described cutting mechanism is used for cut rib 1, simulates coal mining by above-mentioned assay device, regulates cutting machine by supporting mechanism
The height of structure, the advance of walking mechanism regulation cutting mechanism, carry out continuous excavating coal test.
Such as Fig. 1 and Fig. 2, supporting mechanism includes that lifting platform, lifting platform are provided with top board 18 and base plate 19, top board 18 and base plate 19
Between be provided with supporting cylinder 20 and gripper shoe group, supporting cylinder 20 withstands on top board 18, drive top board 18 lift,
With self-locking mechanism in support hydraulic cylinder 20, after lifting platform is raised or lowered to desired height, supporting cylinder 20 auto lock.
Gripper shoe group is articulated between top board 18 and base plate 19, and gripper shoe group is provided with multiple, and each gripper shoe group includes intersecting in X-shaped
The first gripper shoe 21 and the second gripper shoe 22 arranged, the infall of the first gripper shoe 21 and the second gripper shoe 22 is provided with support
Axle 25, two the gripper shoe groups faced each other share same support shaft 25.The two ends of the first gripper shoe 21 are articulated and connected in top board
18 and base plate 19, the two ends of the second gripper shoe 22 are provided with pulley 23, the slide rail 24 that can arrange on top board 18 and base plate 19
Upper motion.In the present embodiment, gripper shoe group is provided with four, is symmetrically distributed between top board 18 and base plate 19, and first supports
The bottom of plate 21 is positioned at four corners of base plate 19, and the top of the second gripper shoe 22 is positioned at four corners of top board 18, passes through
First gripper shoe 21 is hinged, and the second gripper shoe 22 is slided on slide rail 24, it is possible to achieve gripper shoe group is diverged or packs up, thus
Coordinate the lifting of supporting cylinder 20 controlroof 18.It is provided with first electronic between first gripper shoe 21 and the second gripper shoe 22
Push rod 26, the first electric pushrod 26 works with supporting cylinder 20 simultaneously, helps lifting platform entirety to be raised and lowered, assists simultaneously
Having helped locking function, when supporting cylinder 20 lifts, the first electric pushrod 26 promotes the first gripper shoe 21 and second to support
Packing up between plate 22 or diverge, when supporting cylinder 20 stops, the first electric pushrod 26 stops locking the first gripper shoe
21 and second position of gripper shoe 22.
Such as Fig. 1 and Fig. 3, walking mechanism includes that workbench 9, workbench 9 are positioned at above top board 18, and the bottom of workbench 9 sets
Having slide block 11, the end face of top board 18 to be provided with guide rail 12, guide rail 12 is in Ω shape, and the bottom of guide rail 12 is installed on by bolt
Top board 18, its top camber protruding upward, slide block 11 is sheathed on guide rail 12, can move along guide rail 12, in this enforcement
In example, guide rail 12 is provided with two, lays respectively at the both sides, bottom surface of workbench 9.Article two, it is provided with leading screw 13 between guide rail 12, i.e.
Leading screw 13 is installed in the middle part of workbench 9 bottom surface, and workbench 9 can be driven to move, and the two ends of leading screw 13 are respectively by a bracer 14
Support, one end of leading screw 13 connects driving motor 15, by driving motor 15 to drive leading screw 13 to rotate, and then drives slide block 11
Move along guide rail 12, so that workbench 9 moves integrally.The end face of workbench 9 is provided with thermal infrared imager 10, for right
The infrared signal produced in cutting course measures, and transmits to computer.
The side of workbench 9 is hinged with rocking arm 7, and cutting mechanism is located at the end of rocking arm 7, and the lower section of rocking arm 7 is provided with the second electricity
Dynamic push rod 16, the second electric pushrod 16 transversely protrudes from the sidewall of workbench 9, and the end of the second electric pushrod 16 vertically sets
Having lifter plate 17, lifter plate 17 to be resisted against the bottom surface of rocking arm 7, rocking arm 7 bottom surface is set to arc, and the second electric pushrod 16 works
Time promote lifter plate 17 transverse shifting, the end face of lifter plate 17 is along rocking arm 7 bottom surface arcuate movement, thus controls rocking arm 7 one
Rotation in the range of Ding, can be with the height of auxiliary adjustment cutting mechanism.Rocking arm 7 near one end of cutting mechanism, i.e. upper end, if
There are two pieces of acoustic emission sensors 8, for measuring the acoustic emission signal produced in cutting course.
Such as Fig. 3, Fig. 4 and Fig. 5, cutting mechanism includes that cylinder 2, cylinder 2 are connected to rocking arm 7 by connecting shaft, connecting shaft
One end is provided with decelerator 5, and decelerator 5 is connected to cutting motor 6, and the other end of connecting shaft is connected to cylinder 2, outside cylinder 2
Being provided with pick 3 week, for cut rib 1, pick 3 is provided with foil gauge 4, is used for measuring pick 3 and strains in cutting course
Situation of change, is provided with three-dimensional internal stress sensor 27 in rib 1, measure the stress wave in cutting course, and then analyze cut district
The distribution situation of coal petrography in territory.When cutting motor 6 works, cylinder 2 rotates rib 1 cut, cylinder 2 cut rib 1
Lower section time, if cylinder 2 to rib 1 cut inconvenience or angle adjustment less than ideal position time, the second electric pushrod 16 can be passed through
Come the swing of adjusting rock arm 7, and then the position of regulation cylinder 2, if need to adjust the biggest, can be regulated by lifting platform
Highly, in order to preferably complete cut work.
This utility model coal petrography cutting test device, utilize acoustic emission signal sensor 8, thermal infrared imager 10, foil gauge 4 and
Three-dimensional internal stress sensor 27 gathers the signal in cutting course, and processes unlike signal, and then analysis is learnt and cut
Cut the coal petrography distribution in district, when running into rock, control the lifting of workbench 9, with adjusting rock arm 7 and the height of cutting mechanism,
So that cutting mechanism is at the normal cut in the region of coal, pick is caused to damage without cut to rock.
The method using above-mentioned coal petrography cutting test device includes:
Step one: the configuration of simulation cut material, arranges rib 1, and arranges three-dimensional internal stress sensor 27 in rib 1.
In the present embodiment, rib material is respectively coal dust and sandstone, is simulated the configuration of cut material, specifically, material will be poured
Material is put into after stirring and is carried out moulding in mould and shine dry-cure, rear layout three-dimensional internal stress sensor 27 to be solidified.
Step 2: arrange two pieces of acoustic emission sensors 8 at cutting mechanism at rocking arm 7, installs foil gauge 4 on pick 3,
And thermal infrared imager 10 is set at the top of workbench 9, and make thermal infrared imager 10, foil gauge 4, acoustic emission sensor 8 and
Three-dimensional internal stress sensor 27 is all connected to computer, can wirelessly output a signal to computer, it is also possible to logical
Cross wire and be directly connected to computer.
Step 3: firing test device, cutting motor 6 drives cylinder 2 to rotate, and makes pick 3 cut rib 1, simultaneously drives
Motor 15 drives leading screw 13 to rotate, and then drives workbench 9 to move along guide rail 12, and rocking arm 7 and cutting mechanism also move,
Continuing cut forward, acoustic emission sensor 8 measures the acoustic emission signal that cutting course produces, and cut mistake measured by thermal infrared imager 10
The infrared signal that journey produces, foil gauge 4 measures the strain of pick 3 in cutting course, and cut measured by three-dimensional internal stress sensor 27
During stress wave in rib.Cylinder 2 to rib 1 cannot cut time, regulation lifting platform height, start supporting cylinder
20, supporting cylinder 20 drives top board 18 to lift, and workbench 9 lifts the most therewith, after mixing up height, and supporting cylinder 20
Automatically locking, cutting mechanism can normal cut.
Such as Fig. 6, gather the signal in rib 1 according to above-mentioned test, be analyzed.From theory, the stress wave in medium exists
In communication process, the time of the three-dimensional internal stress sensor 27 arriving diverse location is different, and this is relevant with the spread speed of stress wave.
According to the spread speed formula in media as well of compressional wave under plane strain condition, can calculate stress wave speed in coal, rock is
In formula: E, u, p are respectively coal, the elastic modelling quantity of rock, Poisson's ratio and density, g is acceleration of gravity.Inspection information
Understand sandstone as shown in the table with the physical and mechanical property of coal dust:
| Classification | Elastic modulus E (MPa) | Poisson's ratio | Density/(kg m-3) |
| Coal | 0.53e4 | 0.32 | 1300 |
| Sandstone | 1.35e4 | 0.123 | 2540 |
By calculating: CCoal=241m/s, CSandstone=234m/s, required time is respectively
tCoal=s/CCoal, tSandstone=s/CSandstone。
If cylinder is s with the spacing of three-dimensional internal stress sensor 271, the stress wave produced during cylinder 2 cut rib 1 is delivered to
During three-dimensional internal stress sensor, recording actual time is tRealIf, tReal=tCoal, then can illustrate with radius as s1, the center of circle for rolling
Cylinder with rib contact point in the range of circle in be all coal cinder；If recording tReal=tSandstone, then illustrate with radius as s1, the center of circle for rolling
Cylinder with rib contact point in the range of circle in be all sandstone；If recording tCoal<tReal<tSandstone, then illustrate with radius as s1, the center of circle be
In circle in the range of cylinder and rib contact point, existing coal cinder has again sandstone；In like manner, according to the survey time may determine that in Fig. 6
Next three-dimensional internal stress sensor s2In the range of the actual distribution situation of coal and rock.
In accordance with the above, a weighting function can be summed up:
tActual=tCoal* a%+tSandstone* b%, wherein a represents weight shared by coal, and b represents weight shared by rock；
By measuring the actual time of adjacent sensors feedback, institute's cut region coal petrography ratio can be analyzed, in order to preferably to reality
Experiment device is controlled, and by signal and the difference of time of feedback, can adjust the height of cutting mechanism, to avoid rock model
Enclose, it is to avoid damage pick.
Above example is only in order to illustrate the technical solution of the utility model and unrestricted, although with reference to preferred embodiment to this practicality
Novel be described in detail, it will be appreciated by those skilled in the art that the technical solution of the utility model can be modified or
Person's equivalent, without deviating from objective and the scope of the technical program, it all should be contained at right of the present utility model
In.
Claims (8)
1. a coal petrography cutting test device, it is characterised in that including: lifting platform, described lifting platform is provided with top board, base plate,
Being provided with supporting cylinder and gripper shoe group between described top board and described base plate, described supporting cylinder withstands on described top board, can
Driving described top board to lift, described gripper shoe group is articulated between described top board and described base plate, and described top board is provided with workbench,
The bottom of described workbench is provided with slide block, and described slide block is installed on described top board on the guide rail arranged, the side of described workbench
Being provided with driving motor, described driving motor is connected to leading screw, and described leading screw is installed in described workbench, by described driving motor
Driving described leading screw, and then drive described workbench to move along described guide rail, described workbench is provided with thermal infrared imager, described
The side of workbench is hinged with rocking arm, and described rocking arm is provided with acoustic emission signal sensor, and the end of described rocking arm is fixed with cut
Mechanism, described cutting mechanism includes that cylinder, the periphery of described cylinder are provided with pick, and for cut rib, described pick is provided with
Foil gauge, is provided with three-dimensional internal stress sensor in described rib, described cylinder is provided with cutting motor away from the side of rib.
Coal petrography cutting test device the most according to claim 1, it is characterised in that: described gripper shoe group is provided with multiple, each
Described gripper shoe group includes the first gripper shoe and the second gripper shoe, described first gripper shoe and described second of intersection setting in X-shaped
The infall of fagging is provided with support shaft, and the two ends of described first gripper shoe are articulated and connected in described top board and described base plate, and described
The two ends of two gripper shoes are provided with pulley, and the slide rail that can arrange on described top board and described base plate moves.
Coal petrography cutting test device the most according to claim 2, it is characterised in that: described gripper shoe group is provided with four, symmetrical
Being distributed between described top board and described base plate, the bottom of described first gripper shoe is positioned at four corners of described base plate, and described
The top of two gripper shoes is positioned at four corners of described top board.
Coal petrography cutting test device the most according to claim 2, it is characterised in that: described first gripper shoe and described second
Being provided with the first electric pushrod between fagging, when described supporting cylinder lifts, described first electric pushrod promotes described first
Packing up between fagging and described second gripper shoe or diverge, when described supporting cylinder stops, described first electric pushrod stops
To lock the position of described first gripper shoe and described second gripper shoe.
Coal petrography cutting test device the most according to claim 1, it is characterised in that: the bottom of described guide rail is installed on described
Top board, its top camber protruding upward, described slide block set is located on described guide rail, can move along described guide rail.
Coal petrography cutting test device the most according to claim 1, it is characterised in that: the end of described workbench is located at by described leading screw
Middle face, the two ends of described leading screw are respectively by a block supports.
Coal petrography cutting test device the most according to claim 1, it is characterised in that: the side of described workbench is laterally protruding to be set
Having the second electric pushrod, the end of described second electric pushrod to be vertically provided with lifter plate, described lifter plate is resisted against described rocking arm
Bottom surface, described rocking arm bottom surface is set to arc, promotes described lifter plate transverse shifting, described liter during described second electric pushrod work
The end face of fall plate moves along described rocking arm bottom surface, controls the rotation of described rocking arm.
Coal petrography cutting test device the most according to claim 1, it is characterised in that: described cylinder is connected to institute by connecting shaft
Stating rocking arm, one end of described connecting shaft is provided with decelerator, and described decelerator is connected to described cutting motor, described connecting shaft another
One end is connected to described cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306502.1U CN205562320U (en) | 2016-04-13 | 2016-04-13 | Coal petrography cut test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306502.1U CN205562320U (en) | 2016-04-13 | 2016-04-13 | Coal petrography cut test device |
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| CN205562320U true CN205562320U (en) | 2016-09-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758757A (en) * | 2016-04-13 | 2016-07-13 | 辽宁工程技术大学 | Coal-rock cutting experiment device and method |
| CN109060145A (en) * | 2018-08-27 | 2018-12-21 | 山西焦煤集团岚县正利煤业有限公司 | A kind of Coal-Rock Interface Recognition system for simulating downhole coal mine cutting |
| CN110821509A (en) * | 2019-12-11 | 2020-02-21 | 辽宁工程技术大学 | Independently supplementary cut tunnelling analogue test device of excitation formula |
| CN112879002A (en) * | 2021-04-29 | 2021-06-01 | 中国矿业大学(北京) | Coal mine multifunctional model test mining device and method |
| CN113431574A (en) * | 2021-06-25 | 2021-09-24 | 桂林电子科技大学 | Low-energy-consumption efficient mining parameter optimization method and three-dimensional scanning device for coal mining machine |
-
2016
- 2016-04-13 CN CN201620306502.1U patent/CN205562320U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758757A (en) * | 2016-04-13 | 2016-07-13 | 辽宁工程技术大学 | Coal-rock cutting experiment device and method |
| CN105758757B (en) * | 2016-04-13 | 2018-08-31 | 辽宁工程技术大学 | A kind of coal petrography cutting test device and method |
| CN109060145A (en) * | 2018-08-27 | 2018-12-21 | 山西焦煤集团岚县正利煤业有限公司 | A kind of Coal-Rock Interface Recognition system for simulating downhole coal mine cutting |
| CN110821509A (en) * | 2019-12-11 | 2020-02-21 | 辽宁工程技术大学 | Independently supplementary cut tunnelling analogue test device of excitation formula |
| CN112879002A (en) * | 2021-04-29 | 2021-06-01 | 中国矿业大学(北京) | Coal mine multifunctional model test mining device and method |
| 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 |
| CN113431574A (en) * | 2021-06-25 | 2021-09-24 | 桂林电子科技大学 | Low-energy-consumption efficient mining parameter optimization method and three-dimensional scanning device for coal mining machine |
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