CN118038745A

CN118038745A - Simulation experiment equipment and simulation experiment method

Info

Publication number: CN118038745A
Application number: CN202410444839.8A
Authority: CN
Inventors: 池明波; 段宏飞; 梁伟光; 邹俊鹏; 周福宝; 韩国新; 关磊
Original assignee: China Academy of Safety Science and Technology CASST
Current assignee: China Academy of Safety Science and Technology CASST
Priority date: 2024-04-15
Filing date: 2024-04-15
Publication date: 2024-05-14
Anticipated expiration: 2044-04-15
Also published as: CN118038745B

Abstract

The invention discloses a simulation experiment device and a simulation experiment method, wherein a plurality of circles of annular runways are arranged at the top of a pressing plate, and a walking vibrator is arranged to form a vibration ore pressure simulation mechanism for simulating vibration ore pressure. An electric reversing door is arranged on a channel side plate on one side of the central line of the annular runway, and the electric reversing door is driven to swing inwards or outwards so that the inner annular runway and the outer annular runway are communicated, and a walking vibrator runs from the outer ring to the inner ring or from the inner ring to the outer ring to simulate ore pressure to spread from the periphery to the middle or simulate ore pressure to spread from the middle to the periphery. When the electric reversing door is in an initial state, the adjacent inner ring and the outer ring of annular runways are mutually independent, so that the walking vibrator walks in the appointed annular runways, and the periodic mine pressure is simulated. By simulating various vibration ore pressures, the vibration scene in the production under the ore can be better simulated, the accuracy of the simulation effect is improved, and more accurate theoretical guidance is provided for the subsequent production and exploitation under the ore.

Description

Simulation experiment equipment and simulation experiment method

Technical Field

The invention relates to the technical field of similarity simulation for mining, in particular to a similarity simulation experiment device and a similarity simulation experiment method.

Background

In the mining process, a simulation experiment is often required to be used for early simulation so as to provide safe theoretical guidance for subsequent mining. The simulation experiment mostly adopts a simulation device, which comprises a simulation box body, wherein simulation layers are paved on the simulation box body, and the simulation layers are made of similar materials so as to simulate geology of each layer. Similar simulated formations generally include similar coal seams, similar overburden formations, similar aquifers, similar subsurface layers, and the like. In order to simulate the mine pressure, a pressurizing device is arranged at the top of the similar simulation box body. The pressurizing device generally adopts a pressing plate and an oil cylinder, the pressing plate is pressed on the similar surface layer, the oil cylinder drives the pressing plate to press down so as to pressurize the similar simulation layer through the pressing plate, thereby observing the fracture change in the similar simulation layer, the falling state of an overlying rock layer at a goaf and the like, drawing an icon according to the mine pressure, and providing theoretical guidance for later actual exploitation.

However, the conventional mode for simulating the ore pressure can only simulate vertical pressurization from top to bottom, and the pressurizing device always acts and cannot simulate vibration ore pressure. During actual exploitation, vibration can be generated in the rock stratum due to the influence of exploitation or the influence of blasting operation of other surrounding mining areas, and the vibration mine pressure can also influence the rock stratum and exploitation operation and even influence the production operation safety.

In view of the above, it is necessary to provide a simulation experiment apparatus and a simulation experiment method capable of simulating a vibration mine pressure.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a simulation experiment device and a simulation experiment method capable of simulating vibration ore pressure.

The technical scheme of the invention provides a simulation experiment device, which comprises a control system, a simulation device with a simulation layer, a pressurizing device for pressurizing the simulation layer and a vibration ore-pressing simulation mechanism for simulating vibration ore pressure, wherein a pressure gauge is embedded in the simulation layer and is in signal connection with the control system;

The vibrating ore-pressing simulation mechanism comprises a pressing plate covered on the similar simulation layer and a walking vibrator with vibrating rollers, wherein the pressurizing device is arranged above the pressing plate and connected with the pressing plate, and the walking vibrator comprises a power unit for driving the vibrating rollers to operate;

The top surface of the pressing plate is provided with a plurality of rings of annular runways for the running vibrator to run, the channel side plate of each ring of annular runways is respectively provided with side plate openings for the running vibrator to pass through, all the side plate openings are positioned on the same side of the central line of the annular runways, each side plate opening is respectively provided with an electric reversing door capable of rotating and opening, the electric reversing door is in signal connection with the control system, and the electric reversing door is controlled to swing inwards or outwards to be communicated with the adjacent inner side plate opening and the adjacent outer side plate opening, so that the adjacent inner side plate opening and the adjacent outer side plate opening are communicated with the annular runways;

when all the electric reversing doors are in an initial state, any two adjacent rings of annular runways inside and outside are mutually separated, and the walking vibrator walks in any selected ring of annular runways to simulate periodic mine pressure;

When the innermost electric reversing door is in an initial state and the rest electric reversing doors are in an inward swinging state, the walking vibrator can walk from the outer ring of the annular runway to the inner ring of the annular runway in sequence so as to simulate the propagation of mine pressure from the periphery to the middle;

When the outermost electric reversing doors are in an initial state and the rest electric reversing doors are in an outward swinging state, the walking vibrator can walk from the inner ring of the annular runway to the outer ring of the annular runway in sequence so as to simulate ore pressure to spread from the middle to the periphery.

In one optional technical scheme, the outer peripheral surface of the vibration roller is provided with a plurality of wheel lugs at intervals along the circumferential direction, and any two adjacent wheel lugs are separated from each other by a preset distance.

In one optional technical scheme, a runway pad is detachably arranged in the annular runway, wheel guide grooves are formed in the runway pad at intervals along the width direction, and groove wall notches for the walking vibrators to pass through are formed in the groove walls of the wheel guide grooves at positions corresponding to the side plate openings.

In one optional technical scheme, the bottom of the wheel guide groove is provided with an anti-skid groove matched with the wheel convex block, the anti-skid groove is arranged at two ends of the groove wall notch, and the part of the bottom of the wheel guide groove between the two ends of the groove wall notch is a plane.

In one optional technical scheme, a tray is arranged at the top of the walking vibrator, and weights are optionally arranged in the tray.

In one optional technical scheme, the electric reversing door comprises a door shaft which is pivotally connected with the channel side plate, a door plate fixedly connected with the door shaft and a driving mechanism for driving the door shaft and/or the door plate to rotate, and the driving mechanism is in signal connection with the control system;

The length of the door panel is greater than the width of the annular runway, and the distal end of the door panel extends toward or overlaps the distal edge of the side panel opening on the inside/outside as the door panel is driven to swing inwardly/outwardly.

In one optional technical scheme, a first magnet is arranged at the far end of the door plate, and a second magnet used for being attracted with the first magnet is arranged at the edge of the far end of the opening of the side plate.

In one optional aspect, the driving mechanism includes a first motor, a second motor, and a third motor;

The door shafts comprise an innermost first door shaft, an outermost second door shaft and a plurality of third door shafts positioned between the first door shaft and the second door shaft;

The first door shaft is in transmission connection with the first motor, the second door shaft is in transmission connection with the second motor, and a plurality of third door shafts are connected with the third motor through a synchronous mechanism.

In one of the alternative solutions, the first motor is mounted on top of the innermost channel side plate, the second motor is mounted on top of the outermost channel side plate, and the third motor is mounted on top of the pressing plate and outside the second door shaft;

An installation cavity is arranged below a plurality of third door shafts in the pressing plate, a driven wheel is arranged at the lower end of the third door shafts, a driving wheel is arranged at the lower end of a motor rotating shaft of the third motor, the driving wheel and the driven wheel are both arranged in the installation cavity, and the driving wheel and the driven wheel are connected through a synchronous belt;

the cavity opening of the installation cavity is positioned on the side face of the pressing plate, and a filter screen is arranged in the cavity opening of the installation cavity.

The technical scheme of the invention also provides a simulation experiment method of the simulation experiment equipment, which comprises the following steps:

s01: starting a pressurizing device to pressurize the lower similar simulation layer to a preset pressure value through a pressing plate;

S02: controlling all electric reversing doors to be kept in an initial state, placing a walking vibrator in an annular runway according to a preset sequence to walk so as to simulate periodic ore pressure, simultaneously recording the size change and period of the ore pressure in a similar simulation layer, and simultaneously observing and recording the crack change and the falling state of the similar simulation layer;

S03: the innermost electric reversing door is kept in an initial state, the rest electric reversing doors are driven to an inward swinging state, a walking vibrator is placed in an outermost annular runway, the walking vibrator sequentially walks from the outer annular runway to the inner annular runway to simulate ore pressure to spread from the periphery to the middle, meanwhile, the ore pressure change and period in a similar simulation layer are recorded, and meanwhile, the crack change and the falling state of the similar simulation layer are observed and recorded;

S04: the outermost electric reversing doors are kept in an initial state, the rest electric reversing doors are driven to swing outwards, a walking vibrator sequentially walks from an inner ring annular runway to an outer ring annular runway to simulate ore pressure to spread from the middle to the periphery, meanwhile, the ore pressure change and period in a similar simulation layer are recorded, and meanwhile, the crack change and the falling state of the similar simulation layer are observed and recorded;

S05: repeating the steps S02-S04 for a plurality of times to finish the simulation experiment.

By adopting the technical scheme, the method has the following beneficial effects:

According to the simulation experiment equipment and the simulation experiment method, the vibration ore pressure is simulated by arranging the plurality of circles of annular runways at the top of the pressing plate and arranging the walking vibrator to form the vibration ore pressure simulation mechanism. The electric reversing door is arranged on a channel side plate on one side of the central line of the annular runway, and is driven to swing inwards or outwards, so that the inner annular runway and the outer annular runway are communicated, and the walking vibrator runs from the outer ring to the inner ring or from the inner ring to the outer ring, so that the mine pressure is simulated to be spread from the periphery to the middle or from the middle to the periphery. When the electric reversing door is in an initial state, the adjacent inner ring and the outer ring of annular runways are mutually independent, so that the walking vibrator walks in the appointed annular runways, and the periodic mine pressure is simulated.

In summary, the simulation experiment equipment and the simulation experiment method provided by the invention can simulate various vibration ore pressures, can better simulate vibration scenes in production under the ore, improve the accuracy of simulation effects, and provide more accurate theoretical guidance for subsequent production and exploitation under the ore.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. In the figure:

FIG. 1 is a schematic diagram of a simulation experiment apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a simulation device, pressurizing device, and vibrating ore-mine analog mechanism;

FIG. 3 is a top view of a vibratory ore-mining analog compression mechanism;

FIG. 4 is an enlarged schematic view of region K of FIG. 3, wherein the electrically operated directional gate is in an initial state;

FIG. 5 is a transverse cross-sectional view of a channel side plate of the annular runway with side plate openings;

FIG. 6 is a transverse cross-sectional view of the power reversing door installed in the side panel opening;

FIG. 7 is a schematic illustration of the power reversing gate swinging inwardly;

FIG. 8 is a schematic view of the power reversing gate swinging outwardly;

FIG. 9 is a top view of the vibrating ore-mining analog mechanism with the innermost electrically actuated reversing gate in an initial state and the remaining electrically actuated reversing gates in an inwardly swung state;

FIG. 10 is an enlarged schematic view of area L of FIG. 9;

FIG. 11 is a top view of the vibrating mining analog mechanism with the outermost electrically actuated reversing gate in an initial state and the remaining electrically actuated reversing gates in an outwardly swung state;

FIG. 12 is an enlarged schematic view of the N region of FIG. 11;

FIG. 13 is a cross-sectional view taken along the direction I-I of FIG. 3;

FIG. 14 is a cross-sectional view taken along the J-J direction of FIG. 3;

FIG. 15 is an enlarged schematic view of the area O of FIG. 14;

FIG. 16 is a schematic view of a walking vibrator walking from an outer race to an inner race;

FIG. 17 is a schematic view of a walking vibrator walking from an inner race to an outer race;

FIG. 18 is a front view of a walking vibrator of one construction;

FIG. 19 is a front view of another construction of a walking vibrator;

FIG. 20 is a cross-sectional view of a vibrating roller;

FIG. 21 is a perspective view of a vibrating roller;

FIG. 22 is a cross-sectional view of the annular runway with runway pads mounted thereto;

FIG. 23 is a cross-sectional view of a runway pad;

FIG. 24 is a cross-sectional view taken along the direction P-P of FIG. 23;

Fig. 25 is a partial perspective view of a runway pad.

Detailed Description

Specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

As shown in fig. 1-13 and fig. 16-21, the simulation experiment apparatus provided in an embodiment of the present invention includes a control system 1, a simulation device 2 having a simulation layer 22, a pressurizing device 3 for pressurizing the simulation layer 22, and a vibration ore pressure simulation mechanism for simulating vibration ore pressure, wherein a pressure gauge 24 is embedded in the simulation layer 22, and the pressure gauge 24 is in signal connection with the control system 1.

The vibrating ore-pressing simulation mechanism comprises a pressing plate 4 covered on a similar simulation layer 22 and a walking vibrator 5 with vibrating rollers 52, and a pressurizing device 3 is arranged above the pressing plate 4 and connected with the pressing plate 4. The walking vibrator 5 includes a power unit 53 for driving the vibration roller 52 to operate.

The top surface of clamp plate 4 is equipped with the multiple ring runway 41 that is used for walking of walking vibrator 5, and the passageway curb plate 42 of every ring runway 41 is equipped with the curb plate opening 421 that is used for walking vibrator 5 to pass through respectively, and all curb plate openings 421 are in the same side of the central line of ring runway 41, and every curb plate opening 421 is equipped with the electronic switching-over door 43 that can the rotation switch respectively, and electronic switching-over door 43 and control system 1 signal connection are inwards or outwards swung in order to communicate two adjacent curb plate openings 421 in order to communicate two adjacent rings of ring runway 41 in through controlling electronic switching-over door 43.

When all the electric reversing doors 43 are in the initial state, any two adjacent rings of annular runways 41 inside and outside are separated from each other, and the walking vibrator 5 walks in any selected ring of annular runways 41 to simulate the periodical mine pressure.

When the innermost electric reversing gate 43 is in an initial state and the rest of the electric reversing gates 43 are in an inward swinging state, the traveling vibrator 5 can sequentially travel from the outer ring-shaped runway 41 to the inner ring-shaped runway 41 to simulate the propagation of mine pressure from the periphery to the middle.

When the outermost electrically operated directional gate 43 is in the initial state and the remaining electrically operated directional gates 43 are all in the outward swing state, the traveling vibrator 5 can sequentially travel from the inner ring-shaped runway 41 to the outer ring-shaped runway 41 to simulate the propagation of the mine pressure from the middle to the periphery.

The simulation experiment equipment provided by the invention is used for simulation of submerged production, such as coal mining operation.

The simulation experiment equipment comprises a control system 1, a simulation device 2, a pressurizing device 3, a pressing plate 4, a walking vibrator 5 and the like, wherein the pressing plate 4 and the walking vibrator 5 form a vibration ore-pressing simulation mechanism.

The control system 1 adopts an automatic control system such as a controller, a chip, a computer and the like, and is used for controlling the switching operation of each electrical appliance mechanism.

The analogue means 2 comprises a tank 21, analogue layer 22, analogue hydraulic support 23, pressure gauge 24 etc. The case 21 has a hexahedral shape with an opening at the top. The simulated similar layer 22 includes a similar coal seam 221, a similar overburden 222, a similar aquifer 223, a similar subsurface layer 224, and the like. A similar coal seam 221, a similar overburden 222, a similar aquifer 223, and a similar subsurface 224 are disposed in the tank 21 in a sequential order from bottom to top. A goaf 25 is formed by hollowing out one end of the similar coal seam 221, a similar hydraulic support 23 is arranged in the goaf 25, and the similar hydraulic support 23 is used for supporting a coal seam roof. A plurality of pressure gauges 24 are embedded in the similar simulation layer 22, and a plurality of pressure gauges 24 may be provided in the similar overburden 222 and the similar aquifer 223, respectively, as required. A pressure gauge 24 is also provided on the top plate of a similar hydraulic mount 23. The pressure gauge 24 is connected to the control system 1 by a wire to transmit the monitored pressure to the control system 1.

The pressurizing device 3 is fixedly arranged on the top of the analog device 2, and can adopt a hydraulic oil cylinder, and a piston rod of the hydraulic oil cylinder extends downwards.

The platen 4 overlies the analog layer 22, and in particular, the platen 4 overlies the analog skin 224. Four corners of the pressing plate 4 are provided with connecting holes 40, four sets of pressurizing devices 3 are arranged at the top of the analog device 2, and the telescopic ends (piston rods) of each set of pressurizing devices 3 are connected to the connecting holes 40. The pressurizing device 3 drives the pressing plate 4 downward, and applies a vertical downward pressure to the similar simulation layer 22 through the pressing plate 4 to simulate the vertical mine pressure.

The walking vibrator 5 may walk in the annular runway 41. The walking vibrator 5 includes a body 51, a vibration roller 52, a power unit 53, a battery 54, and the like. The vibration roller 52 is driven to rotate by the power unit 53 to realize the walking and advancing of the walking vibrator 5.

The body 51 is provided with two pairs of vibrating rollers 52, one vibrating roller 52 at the front end is a steering wheel, and the power unit 53 can adopt a power motor which is in transmission connection with the wheel shafts of one or two pairs of vibrating rollers 52. The battery 54 supplies power to the power unit 53. Preferably, the power motor is a variable frequency motor in order to vary the walking speed. The walking vibrator 5 can be controlled by a remote controller or by the control system 1.

The vibration roller 52 may be an eccentric roller or a plurality of protrusions may be provided at the edge of the vibration roller 52 to generate vibration when walking on the platen 4. The magnitude of the vibration can be adjusted by changing the weight of the walking vibrator 5.

In order to guide the walking vibrator 5 to walk on the pressing plate 4, a plurality of annular runways 41 are arranged on the top surface of the pressing plate 4, and the plurality of annular runways 41 are sequentially arranged from inside to outside. The walking vibrator 5 may walk in the annular runway 41. The two sides of the annular runway 41 are channel side plates 42 which comprise straight line sections and arc sections, and the two ends of the annular runway 41 with the arc sections are in the length direction. On the basis of the central line of the annular runway 41 in the length direction, a side plate opening 421 is arranged on each channel side plate 42 on the same side of the central line, and the side plate opening 421 can also be called a gate for the running vibrator 5 to pass through for the running vibrator 5 to change the channel between the inner ring and the outer ring annular runway 41. The side plate opening 421 is provided in a straight section of the channel side plate 42. Each side plate opening 421 is provided with an electric reversing door 43 capable of being turned on and off, respectively, and the electric reversing doors 43 are controlled to be turned on and off automatically by the control system 1. The adjacent inner and outer annular raceways 41 are communicated by controlling the motor-operated reversing gate 43 to swing inwardly or outwardly to communicate with the adjacent inner and outer side plate openings 421. When the electric power steering door 43 is in a normal or initial state, the electric power steering door 43 closes the side plate opening 421. The electric reversing doors 43 can open the side plate openings 421 after swinging, and reversing channels 430 are formed between the two electric reversing doors 43 after tilting and swinging, and are communicated with the side plate openings 421 on the inner and outer channel side plates 42, so as to guide the travelling vibrator 5 to change channels between the inner and outer ring-shaped runways 41. When the travelling vibrator 5 reaches the swinging electric reversing gate 43, the deflection reversing can be guided by the electric reversing gate 43 into the reversing channel 430.

Specifically, the outermost one of the electrically operated directional gates 43 can swing inward only, the innermost one of the electrically operated directional gates 43 can swing outward only, and the plurality of electrically operated directional gates 43 in the middle can swing inward and outward.

By selecting the way in which the travelling vibrator 5 travels in the annular runway 41, different vibratory mine pressures can be simulated.

Specifically, when all the electrically operated directional gates 43 are in the initial state, any two adjacent rings of the annular runways 41 inside and outside are spaced apart from each other, and the traveling vibrator 5 can travel in any selected ring of the annular runways 41 to simulate the periodic mine pressure. Each time the walking vibrator 5 walks, it represents a cycle of pressing.

When the innermost electric reversing gate 43 is in the initial state and the rest of the electric reversing gates 43 are in the inward swinging state, the traveling vibrator 5 can sequentially travel from the outer ring-shaped runway 41 to the inner ring-shaped runway 41 to simulate the propagation of the mine pressure from the periphery to the middle. Referring to fig. 16, the traveling vibrator 5 sequentially travels from the outer ring to the inner ring along arrows a-B-C-D-E. By this mode, the propagation of vibratory mine pressures when vibration occurs around the top of the mine can be simulated.

When the outermost electrically operated directional gate 43 is in the initial state and the remaining electrically operated directional gates 43 are all in the outward swing state, the traveling vibrator 5 can sequentially travel from the inner ring-shaped runway 41 to the outer ring-shaped runway 41 to simulate the propagation of the mine pressure from the middle to the periphery. Referring to fig. 17, the traveling vibrator 5 sequentially travels from the outer ring to the inner ring along arrows E-F-G-H-a. By this mode, the propagation of the vibrating mining pressure when vibration occurs in the top central region of the mining area can be simulated.

As shown in fig. 16, a position sensor 48 is provided in the outermost annular race 41 as needed to monitor whether or not the traveling vibrator 5 passes. The position sensor 48 is located downstream of the side plate opening 421 of the outermost annular race track 41. After the traveling vibrator 5 is detected to pass, a signal is sent to the control system 1, and the control system 1 controls and drives the electric reversing doors 43 so that the innermost electric reversing door 43 is kept at the initial position, and the rest electric reversing doors 43 swing inwards. A position sensor 48 is also provided in the innermost annular run 41 for monitoring whether a walking vibrator 5 passes. The position sensor 48 is located upstream of the side plate opening 421 of the innermost annular runway 41. After the walking vibrator 5 is detected to pass, a signal is sent to the control system 1, and the control system 1 controls and drives the electric reversing doors 43, so that the outermost electric reversing doors 43 are kept at the initial position, and the rest electric reversing doors 43 swing outwards. Thus, the automatic circulation of the walking vibrator 5 can be realized.

The upstream and downstream of the present invention are defined by the direction of the traveling vibrator 5, and the point where the traveling vibrator 5 passes first is upstream and the point where the traveling vibrator passes later is downstream.

In conclusion, the simulation experiment equipment provided by the invention can simulate various vibration ore pressures, can better simulate vibration scenes in production under the ore, improves the accuracy of simulation effects, and provides more accurate theoretical guidance for subsequent production and exploitation under the ore.

In one embodiment, the simulation experiment apparatus further comprises a water injection tank 6 containing fluorescent powder, a water collection tank 7, a camera 8, a fixing bracket 9 and the like.

The water filling tank 6 and the analogue means 2 are respectively mounted on a fixed bracket 9. The water filling tank 6 contains fluorescent powder, and is connected with the tank body 21 through a conduit, and the water outlet end of the conduit is inserted into the similar water-bearing layer 223 so as to fill the water containing the fluorescent powder into the similar water-bearing layer 223. The water containing the phosphor can be photographed by the camera 8. When a fracture is created by the compression of a similar overburden 222, the water containing the phosphor will flow into the fracture zone, so that the development status of the fracture zone can be observed by the camera 8.

The water collection tank 7 is connected to the bottom of the tank body 21 below the goaf 25 for collecting the water flowing down. Water level gauges may be provided in the water injection tank 6 and the water collection tank 7, respectively, as needed, for monitoring the water level. When a fracture is created by compression of a similar overburden 222, if the fracture development zone develops too deeply, water will flow into the goaf 25 and then into the header tank 7. By monitoring the amount of water in the water collection tank 7, the general water inrush condition in this similar situation can be estimated.

The camera 8 can capture the internal condition from the front and rear glass plates of the case 21 by being held by a moving mechanism, and transmit image data to a control system.

In one embodiment, as shown in fig. 18 to 21, the outer peripheral surface of the vibration roller 52 is provided with a plurality of wheel protrusions 521 at intervals along the circumferential direction, and any two adjacent wheel protrusions 521 are spaced apart from each other by a predetermined distance. When the vibration roller 52 rotates, the concave-convex surface of the vibration roller will vibrate when contacting the pressing plate 4, so as to realize the vibration ore pressure similar simulation.

The top surface of the wheel boss 521 is a plane, and both sides thereof are arc surfaces.

In one embodiment, as shown in fig. 22 to 25, a runway pad 49 is detachably mounted in the annular runway 41, wheel guide grooves 491 are provided on the runway pad 49 at intervals in the width direction, and groove wall notches 4921 for passing the traveling vibrator 5 are provided on the groove wall 492 of the wheel guide groove 491 at positions corresponding to the side plate openings 421.

In the present embodiment, track pads 49 are provided in the annular track 41, and the track pads 49 may be mounted in the annular track 41 by snap-fitting or the like. The runway pad 49 is provided with two corresponding wheel guide grooves 491 to prevent the running vibrator 5 from deviating in the annular runway 41. In order to change the track when the electric reversing door 43 swings, groove wall notches 4921 are provided in the groove wall 492 on both sides of the wheel guide groove 491 at positions corresponding to the side plate openings 421 for the traveling vibrator 5 to pass through. When the travelling vibrator 5 reaches the swinging electric reversing gate 43, the travelling vibrator can be guided by the electric reversing gate 43 to deflect and reverse, and enter the reversing channel 430 through the slot wall notch 4921.

In one embodiment, as shown in fig. 24 to 25, the groove bottom of the wheel guide groove 491 is provided with anti-slip grooves 493 for mating with the wheel lugs 521, the anti-slip grooves 493 are arranged at both ends of the groove wall notch 4921, and a portion of the groove bottom of the wheel guide groove 491 between both ends of the groove wall notch 4921 is a plane 490.

In this embodiment, the anti-slip groove 493 is provided at the bottom of the wheel guiding groove 491, so as to cooperate with the wheel bump 521 for anti-slip. In order not to influence the channel changing of the walking vibrator 5, an anti-skid groove 493 is not arranged at the groove bottom part corresponding to the groove wall notch 4921, and a plane 490 is adopted at the part, so that the straight passing of the walking vibrator 5 is not influenced, and the channel changing of the walking vibrator 5 is not influenced.

In one embodiment, as shown in fig. 19, a tray 55 is provided on the top of the walking vibrator 5, and a counterweight 56 is optionally provided in the tray 55. The counterweight 56 may be a metal plate for increasing the weight of the walk vibrator 5 to increase the vibration amplitude.

In one embodiment, as shown in fig. 5-12, the electrically operated directional door 43 includes a door shaft 431 pivotally connected to the channel side plate 42, a door panel 432 fixedly connected to the door shaft 431, and a drive mechanism 433 for driving the door shaft 431 and/or the door panel 432 to rotate, the drive mechanism 433 being in signal connection with the control system 1.

The length of the door panel 432 is greater than the width of the annular runway 41, and when the door panel 432 is driven to swing inward/outward, the distal end of the door panel 432 extends toward the distal edge of the side panel opening 421 on the inside/outside or overlaps with the distal edge of the side panel opening 421.

In the present embodiment, the electric reversing door 43 includes a door shaft 431, a door panel 432, and a driving mechanism 433. The door shaft 431 is connected to the passage side plate 42 by a bearing. Specifically, it is mounted at one end or upstream end of the side plate opening 421. The end of the door panel 432 that is attached to the door shaft 431 is referred to herein as the proximal end, and the end of the door panel 432 that is remote from the door shaft 431 is referred to as the distal end. Similarly, the edge of the side plate opening 421 on the side closer to the door shaft 431 is referred to as the proximal edge, and the edge of the side plate opening 421 on the side farther from the door shaft 431 is referred to as the distal edge.

The driving mechanism 433 may employ a motor, a gas spring, or the like. The driving mechanism 433 is connected with the control system 1 through a wire to realize signal transmission. The operation of each driving mechanism 433 is controlled by the control system 1.

The length of the door 432 is greater than the width of the annular runway 41 to ensure that the door 432 can extend toward, approach or contact the other side channel side panel 42 when tilted to function as a guide for the travel vibrator 5.

As the door panel 432 is driven to swing inward/outward, the distal end of the door panel 432 extends toward the distal edge of the side plate opening 421 on the inside/outside or overlaps the distal edge of the side plate opening 421 to form the reversing channel 430 between the two inclined door panels 432.

In one embodiment, as shown in fig. 6-8, to ensure that the door panel 432 can overlap the distal edge of the inside/outside side panel opening 421, the door panel 432 adopts a telescopic structure including a fixed door panel 4321, a sliding door panel 4322 slidably connected to the fixed door panel 4321, and a gas spring 4323 for driving the sliding door panel 4322 to expand and contract. The gas spring 4323 is controlled to expand and contract by the control system 1. When the door 432 is in the initial state, the gas spring 4323 is in the contracted state, the sliding door 4322 is contracted relative to the fixed door 4321, and the door 432 can be blocked in the side plate opening 421 of the channel side plate 42. When the door panel 432 is driven to swing, the gas spring 4323 is in an extended state, the sliding door panel 4322 is extended with respect to the fixed door panel 4321, and one end of the sliding door panel 4322 is overlapped with the distal edge of the inner/outer side plate opening 421.

In one embodiment, as shown in fig. 5-8, the distal end of the door panel 432 is provided with a first magnet 435 and the distal edge of the side panel opening 421 is provided with a second magnet 422 for attracting the first magnet 435. When the door panel 432 is in the initial state, the first magnet 435 is attracted to the second magnet 422 of the side plate opening 421 where the door panel 432 is located, so as to close the side plate opening 421. When the door panel 432 is in a swing state, the first magnet 435 is attracted to the second magnet 422 of the inner or outer side plate opening 421 to maintain the stability of the inclined arrangement, forming a stable commutation channel 430.

Preferably, the first magnet 435 is disposed at the distal end of the sliding door panel 4322.

In one embodiment, as shown in fig. 14, the drive mechanism 433 includes a first motor 4331, a second motor 4332, and a third motor 4333.

The door shaft 431 includes an innermost first door shaft 4311, an outermost second door shaft 4312, and a plurality of third door shafts 4313 between the first door shaft 4311 and the second door shaft 4312.

The first door shaft 4311 is in transmission connection with the first motor 4331, the second door shaft 4312 is in transmission connection with the second motor 4332, and the plurality of third door shafts 4313 are connected with the third motor 4333 through the synchronizing mechanism 434.

In this embodiment, the driving mechanism 433 includes a first motor 4331, a second motor 4332, and a third motor 4333. The door shaft 431 includes an innermost first door shaft 4311, an outermost second door shaft 4312, and a plurality of third door shafts 4313, the plurality of third door shafts 4313 being between the first door shaft 4311 and the second door shaft 4312.

The first motor 4331 is used for driving the first door shaft 4311, the second motor 4332 is used for driving the second door shaft 4312, and the third motor 4333 is used for driving the plurality of third door shafts 4313 to synchronously rotate.

The first motor 4331 may be directly connected to the first door shaft 4311, or may be connected to the first door shaft 4311 through a transmission structure, which is used to drive the first door shaft 4311 to rotate and reset outwards.

The second motor 4332 may be directly coupled to the second shaft 4312, or may be coupled to the second shaft 4312 through a transmission structure for driving the second shaft 4312 to rotate and reset inward.

The third motor 4333 is used for driving the third door shafts 4313 to swing and reset inside and outside through the synchronizing mechanism 434 and the plurality of third door shafts 4313, thereby being beneficial to saving the number of motors.

In one embodiment, as shown in fig. 14-15, a first motor 4331 is mounted on top of the innermost channel side plate 42, a second motor 4332 is mounted on top of the outermost channel side plate 42, and a third motor 4333 is mounted on the top surface of the platen 4 and outside of the second door spindle 4312.

The lower part of the pressing plate 4, which is positioned below the plurality of third door shafts 4313, is provided with a mounting cavity 45, the lower end of the third door shaft 4313 is provided with a driven wheel 4314, the lower end of a motor rotating shaft of the third motor 4333 is provided with a driving wheel 4334, the driving wheel 4334 and the driven wheel 4314 are positioned in the mounting cavity 45, and the driving wheel 4334 and the driven wheel 4314 are connected through a synchronous belt 4341.

The cavity opening of the installation cavity 45 is positioned on the side surface of the pressing plate 4, and a filter screen 46 is arranged in the cavity opening of the installation cavity 45.

In this embodiment, the first motor 4331 is mounted on the top of the innermost side plate 42 through a bracket, and the rotation shaft of the first motor 4331 is connected to the first door shaft 4311, so that the transmission is direct.

The second motor 4332 is installed at the top of the outermost channel side plate 42 through a bracket, and the rotating shaft of the second motor 4332 is connected with the second door shaft 4312, and the transmission is direct.

The third motor 4333 is mounted on the top surface of the platen 4, which is outside the outermost channel side plate 42, specifically, the third motor 4333 is outside the second door shaft 4312.

A bottom cover 44 is provided at the bottom of the pressing plate 4 under the plurality of third door shafts 4313, and a mounting cavity 45 is formed between the bottom cover 44 and the main body of the pressing plate 4. The bottom cover 44 is connected to the main body of the pressing plate 4 by bolts 47. The lower end of each third door shaft 4313 is provided with a driven wheel 4314, the lower end of the motor rotating shaft of the third motor 4333 is provided with a driving wheel 4334, the driving wheel 4334 and the driven wheels 4314 are positioned in the mounting cavity 45, and the driving wheel 4334 and all the driven wheels 4314 are connected through a synchronous belt 4341. By the arrangement, the third door shafts 4313 can be driven to synchronously rotate, the top space is not occupied, and the structural arrangement of the annular runway 41 is not affected.

The cavity opening of the mounting cavity 45 is located at the side of the platen 4, and the user dissipates heat. A filter screen 46 is arranged in the cavity opening of the mounting cavity 45 to play a role in filtering.

Referring to fig. 1 to 25, a simulation test method for a simulation test apparatus according to an embodiment of the present invention includes the following steps:

S01: the pressurizing device 3 is started to pressurize the lower analog layer 22 to a preset pressure value through the pressure plate 4.

S02: all the electric reversing doors 43 are controlled to be kept in an initial state, the walking vibrators 5 are placed in the annular runway 41 according to a preset sequence to walk so as to simulate periodic ore pressure, meanwhile, the ore pressure change and period in the similar simulation layer 22 are recorded, and meanwhile, the crack change and the falling state of the similar simulation layer 22 are observed and recorded.

S03: the innermost electric reversing gate 43 is kept in an initial state, the rest of the electric reversing gates 43 are driven to an inward swinging state, the walking vibrator 5 is placed in the outermost annular runway 41, the walking vibrator 5 sequentially walks from the outer annular runway 41 to the inner annular runway 41 to simulate the ore pressure to spread from the periphery to the middle, the ore pressure change and period in the similar simulation layer 22 are recorded, and the crack change and the falling state of the similar simulation layer 22 are observed and recorded.

S04: the outermost electric reversing gate 43 is kept in an initial state, the rest of the electric reversing gates 43 are driven to swing outwards, the walking vibrator 5 sequentially walks from the inner ring annular runway 41 to the outer ring annular runway 41 to simulate the ore pressure to spread from the middle to the periphery, meanwhile, the ore pressure change and period in the similar simulation layer 22 are recorded, and meanwhile, the crack change and the falling state of the similar simulation layer 22 are observed and recorded.

Various data recorded during experiments can be made into icons by a computer so as to be used for a user to study rules.

The simulation experiment method provided by the invention can simulate various vibration ore pressures, can better simulate vibration scenes in production under the ore, improves the accuracy of simulation effects, and provides more accurate theoretical guidance for subsequent production and exploitation under the ore.

The above technical schemes can be combined according to the need to achieve the best technical effect.

The foregoing is only illustrative of the principles and preferred embodiments of the present invention. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the invention and should also be considered as the scope of protection of the present invention.

Claims

1. The simulation experiment equipment is characterized by comprising a control system, a simulation device with a simulation layer, a pressurizing device for pressurizing the simulation layer and a vibration ore pressure simulation mechanism for simulating vibration ore pressure, wherein a pressure gauge is embedded in the simulation layer and is in signal connection with the control system;

2. The simulation experiment apparatus according to claim 1, wherein the outer circumferential surface of the vibration roller is provided with a plurality of wheel protrusions at intervals along the circumferential direction, and any adjacent two of the wheel protrusions are spaced apart from each other by a predetermined distance.

3. The simulation experiment apparatus according to claim 2, wherein a runway pad is detachably installed in the annular runway, wheel guide grooves are provided on the runway pad at intervals along the width direction, and groove wall notches for the running vibrators to pass through are provided on the groove wall of the wheel guide grooves at positions corresponding to the side plate openings.

4. A simulation experiment apparatus according to claim 3, wherein the bottom of the wheel guide groove is provided with an anti-slip groove for cooperation with the wheel bump, the anti-slip groove is arranged at both ends of the groove wall gap, and a portion of the bottom of the wheel guide groove between both ends of the groove wall gap is a plane.

5. The simulation experiment apparatus according to claim 1, wherein a tray is provided at a top of the walking vibrator, and a weight is optionally provided in the tray.

6. The simulation experiment apparatus according to claim 1, wherein the electric reversing door comprises a door shaft pivotably connected to the side plate of the passage, a door plate fixedly connected to the door shaft, and a driving mechanism for driving the door shaft and/or the door plate to rotate, the driving mechanism being in signal connection with the control system;

7. The simulation experiment apparatus according to claim 6, wherein the distal end of the door panel is provided with a first magnet, and the distal edge of the side plate opening is provided with a second magnet for attracting the first magnet.

8. The simulation modeling apparatus of claim 6, wherein the driving mechanism includes a first motor, a second motor, and a third motor;

9. The simulation modeling apparatus of claim 8, wherein the first motor is installed at the top of the innermost side of the channel side plate, the second motor is installed at the top of the outermost side of the channel side plate, and the third motor is installed at the top surface of the pressing plate and outside the second door shaft;

10. A method of simulation modeling of a simulation modeling apparatus of any of claims 1 to 9, comprising the steps of: