AU2020100000A4 - Experimental platform for simulating surface movement and deformation - Google Patents
Experimental platform for simulating surface movement and deformation Download PDFInfo
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Abstract
The present invention discloses an experimental platform for simulating surface movement and deformation, which includes a telescopic adhesive film, three-dimensional movement mechanisms capable of moving in horizontal X and Y directions and a vertical Z direction, a fixed base and a console. The telescopic adhesive film is mounted at a top end of the three-dimensional movement mechanism, and the three-dimensional movement mechanism is mounted on the fixed base. A signal output end of the console is connected to a signal input end of the three-dimensional movement mechanism. A subsidence value and a horizontal movement value of the top end of the three-dimensional movement mechanism are set through the console. The console sends a control signal to the three-dimensional movement mechanism according to the preset subsidence value and the preset horizontal movement value of the top end of the three-dimensional movement mechanism. The top end of the three-dimensional movement mechanism drives the telescopic adhesive film to perform lifting movement and horizontal movement. During an experiment, surface movement and deformation required for simulation can be generated, and various surface movement and deformation processes and states are successfully simulated.
Description
EXPERIMENTAL PLATFORM FOR SIMULATING SURFACE MOVEMENT AND DEFORMATION
TECHNICAL FIELD
The present invention relates to the technical field of experimental equipment for mining subsidence, and in particular, to an experimental platform for simulating surface movement and deformation.
BACKGROUND
Any discussion of the background art throughout the specification should in no way be considered as an admission that such background art is prior art nor that such background art is widely known or forms part of the common general knowledge in the field in Australia or worldwide.
Surface subsidence refers to surface movement and deformation caused by roof caving in an underground goaf. Since surface subsidence can cause direct or indirect harm to existing land resources and surrounding buildings and structures, it is necessary to study the influence of surface subsidence on buildings (structures) during coal mining.
There are mainly two kinds of research methods for mining subsidence simulation: numerical simulation calculation and similar material model test. Numerical simulation is essentially computational simulation using a computer, which has calculation method selection and parameter uncertainty. Simulation results can only be used for qualitative research. The similar material model test is performed by mixing sand, lime, water and other materials and preparing a layered model similar to rock strata to simulate coal mining and rock strata movement. A test device may be based on a two-dimensional profile model frame or a three-dimensional model frame. A threedimensional test model usually features complicated fabrication, excavation and observation, and thus is not commonly used. Instead, a two-dimensional profile model is widely used.
A similar material simulation experiment device is only used to simulate rock strata and surface movement conditions. Specifically, it can only be used to simulate rock strata and surface movement and deformation caused by different geological mining conditions and working conditions of coal mining height and width. The geometric scale of similar models is usually (1:200)-(1:800) with low simulation accuracy. Generally, the similar models cannot be used as the quantitative basis and are usually only used for qualitative analysis.
The present invention proposes a test simulation method, which uses an automatically controlled mechanical device (simulation) to generate three-dimensional surface movement. Various building (structure) models are placed on the device. Movement and deformations of various properties and different sizes are provided through the device to act on a foundation of the building (structure) models, so as to study the damage situation of the building (structure) affected by movement and deformations of different properties and different sizes.
The present invention is different from the similar material model tests in that: 1) Simulation methods are different. Similar tests use similar materials to simulate the rock strata and surface movement and deformation. In the present invention, the mechanical device is used to directly generate the surface movement and deformation. 2) Simulated objects are different. Similar tests simulate the profile from rock stratum to surface to obtain the two-dimensional rock strata and surface movement and deformation. In the present invention, the three-dimensional surface movement and deformation is simulated. 3) Objectives are different. The similar tests are conducted to study rock stratum and surface deformations caused by coal mining. The present invention aims to study the influence of the surface movement and deformation on surface buildings (structures).
SUMMARY
An objective of the preferred embodiment of the present invention is to provide an experimental platform for simulating surface movement and deformation, which directly generates three-dimensional surface movement and deformation according to a larger proportion relation by means of an automatic control system and a mechanical device. As a result, the movement and deformation directly acts on a foundation of a pre-fabricated building (structure) model. A geometric size of the experimental platform can be set according to a use site and a use objective, and the geometric scale is generally (1:10)-(1:100). The platform can be used to completely simulate a surface movement basin or to simulate the movement and deformation of a local area. The platform can be used to provide test means for damage research and protection of buildings, pipelines and tower bodies and the like in mining affected areas.
The present invention in its preferred embodiment provides the following technical solution:
An experimental platform for simulating surface movement and deformation includes a telescopic adhesive film, three-dimensional movement mechanisms, a fixed base and a console, where the telescopic adhesive film is mounted at a top end of the three-dimensional movement mechanism. The telescopic adhesive film performs three-dimensional movement in horizontal X and Y directions and a vertical Z direction under the driving of the three-dimensional movement mechanism. The three-dimensional movement mechanism is mounted on the fixed base, and a signal output end of the console is connected to a signal input end of the three-dimensional movement mechanism. A subsidence value and a horizontal movement value of the top end of the three-dimensional movement mechanism are set through the console. The console sends a lifting movement and/or horizontal movement control signal to the three-dimensional movement mechanism according to the preset subsidence value and the preset horizontal movement value of the top end of the three-dimensional movement mechanism. The top end of the three-dimensional movement mechanism drives the telescopic adhesive film to perform lifting movement and/or horizontal movement. During an experiment, surface movement and deformation required for simulation can be generated, and various surface movement and deformation processes and states are successfully simulated.
In the experimental platform for simulating surface movement and deformation, the number of the three-dimensional movement mechanisms is m * n, and the three-dimensional movement mechanisms are arrayed in m rows (namely the X direction) and n columns (namely the Y direction). The three-dimensional movement mechanisms are mounted on the fixed base to form a threedimensional movement mechanism group.
In the experimental platform for simulating surface movement and deformation, m and n are each greater than or equal to 3, so as to completely simulate movement and deformation amounts of subsidence, inclination, curvature, distortion, horizontal movement, horizontal deformation and shear strain, and the like.
In the experimental platform for simulating surface movement and deformation, the threedimensional movement mechanisms include X-direction and Y-direction movement and deformation mechanisms on a horizontal plane and Z-direction movement and deformation mechanism in a vertical direction. The telescopic adhesive film reciprocates in X and Y directions under the driving of the X-direction movement and deformation mechanism, and the X-direction movement and deformation mechanism reciprocates in a Z direction under the driving of the Zdirection movement and deformation mechanism. The X-direction movement and deformation mechanism includes an X-direction moving deformation motor, an X-direction moving screw linear guideway sliding table and an objective table. The Z-direction movement and deformation mechanism includes a base, a Z-direction moving deformation motor, a Z-direction moving screw linear guideway sliding table and a supporting frame. The telescopic adhesive film is detachably connected to an upper end of the objective table, and a lower end of the objective table is detachably connected to a sliding block of the X-direction moving screw linear guideway sliding table. A machine base of the X-direction moving screw linear guideway sliding table and the X-direction moving deformation motor are respectively mounted at an upper end of the supporting frame. A lower end of the supporting frame is detachably connected with a sliding block of the Z-direction moving screw linear guideway sliding table, and a lower end of the Z-direction moving screw linear guideway sliding table is detachably connected with the base. The Z-direction moving deformation motor is mounted on the base. The X-direction moving deformation motor is in transmission connection with a lead screw of the X-direction moving screw linear guideway sliding table. The Z-direction moving deformation motor is in transmission connection with a lead screw of the Zdirection moving screw linear guideway sliding table.
In the experimental platform for simulating surface movement and deformation, the telescopic adhesive film is detachably connected with a ball seat of a universal ball, and a ball body of the universal ball is detachably connected with the objective table through a stud.
In the experimental platform for simulating surface movement and deformation, the supporting frame includes an upper bottom plate, a lower bottom plate and two side plates. The X-direction moving screw linear guideway sliding table is mounted on an upper plate surface of the upper bottom plate, and the X-direction moving deformation motor is mounted on a lower plate surface of the upper bottom plate. The upper bottom plate is fixedly connected with an upper end of the side plate, and a lower end of the side plate is fixedly connected with an upper plate surface of the lower bottom plate. The lower bottom plate is detachably connected with a sliding block of the Zdirection moving screw linear guideway sliding table.
In the experimental platform for simulating surface movement and deformation, a guide rod is disposed on the base around a circumference of a lead screw of the Z-direction moving screw linear guideway sliding table. A lower end of the guide rod is detachably connected with an upper plate surface of the base. An upper end of the guide rod passes through a guide hole in the lower bottom plate and is detachably connected with a supporting seat of the Z-direction moving screw linear guideway sliding table. The guide rod located above the lower bottom plate is sleeved with a guide sleeve, and a lower end of the guide sleeve is fixedly connected with the upper plate surface of the lower bottom plate.
In the experimental platform for simulating surface movement and deformation, the sliding block of the X-direction moving screw linear guideway sliding table is provided with an Xdirection moving limiting shading piece. The upper bottom plate is provided with an X-direction moving limiting photoelectric switch. When the sliding block of the X-direction moving screw linear guideway sliding table reciprocates in an axial direction of the lead screw of the X-direction moving screw linear guideway sliding table, the X-direction moving limiting shading piece passes between a transmitter and a receiver of the X-direction moving limiting photoelectric switch. An inner wall of the side plate adjacent to the lower bottom plate is provided with a Z-direction moving photoelectric switch. The supporting seat of the Z-direction moving screw linear guideway sliding table is provided with a Z-direction moving limiting shading piece. When the sliding block of the Z-direction moving screw linear guideway sliding table reciprocates in an axial direction of the lead screw of the Z-direction moving screw linear guideway sliding table, the Z-direction moving limiting shading piece passes between a transmitter and a receiver of the Z-direction moving photoelectric switch.
In the experimental platform for simulating surface movement and deformation, the threedimensional movement mechanism further includes a Y-direction movement and deformation mechanism. The X-direction movement and deformation mechanism and the Z-direction movement and deformation mechanism reciprocate in the Y direction under the driving of the Ydirection movement and deformation mechanism.
In the experimental platform for simulating surface movement and deformation, the Ydirection movement and deformation mechanism includes a Y-direction moving deformation motor, a Y-direction moving screw linear guideway sliding table and a Y-direction moving deformation base. The base is detachably connected with a sliding block of the Y-direction moving screw linear guideway sliding table. The Y-direction moving screw linear guideway sliding table and the Y-direction moving deformation motor are respectively mounted on the Y-direction moving deformation base. The Y-direction moving deformation motor is in transmission connection with a lead screw of the Y-direction moving screw linear guideway sliding table. The X-direction moving deformation motor, the Y-direction moving deformation motor and the Zdirection moving deformation motor are respectively in communication connection with the console. The experimental platform for simulating surface movement and deformation further includes an equipment box which is open upwards. The three-dimensional movement mechanism is mounted in the equipment box, and a bottom wall of the equipment box is used as the fixed base. In the equipment box, a cable accommodating member is disposed between two adjacent rows of three-dimensional movement mechanisms, and both ends of the cable accommodating member are respectively fixedly connected with an inner wall of the equipment box.
The technical solution of the present invention has the following beneficial technical effects: in the present invention, the three-dimensional movement mechanism is used as a moving point for surface movement and deformation simulation. The telescopic adhesive film is used as a moving surface for surface movement and deformation simulation. The moving surface is driven by the moving point to generate movement and deformation in a vertical or horizontal direction. At the same time, through the moving surface, a surface friction force of the movement and deformation is applied to the bottom of a structure and/or a building on the moving surface, and thus the damage caused by the surface movement and deformation to the building and/or structure on the ground can be well simulated. According to the present invention, the surface movement state is simulated by using the three-dimensional movement and deformation mechanisms, which can not only simulate a surface movement state as a whole, but also simulate stress conditions of buildings and/or structures on the surface. A surface movement state of a complex geological environment can be simulated by setting different moving distances for the X-direction movement and deformation mechanism, the Y-direction movement and deformation mechanism and the Zdirection movement and deformation mechanism. This is favorable for scientific research and analysis on coal mining according to specific surface subsidence state simulation, so that accidents in the actual mining process can be reduced.
According to another aspect of the invention there is provided an experimental platform for simulating surface movement and deformation, comprising a telescopic adhesive film, threedimensional movement mechanisms, a fixed base and a console, wherein the telescopic adhesive film is mounted at a top end of the three-dimensional movement mechanism, the telescopic adhesive film performs three-dimensional movement in horizontal X and Y directions and a vertical Z direction under the driving of the three-dimensional movement mechanism, the threedimensional movement mechanism is mounted on the fixed base, and a signal output end of the console is connected to a signal input end of the three-dimensional movement mechanism; a subsidence value and a horizontal movement value of the top end of the three-dimensional movement mechanism are set through the console; the console sends a lifting movement and/or horizontal movement control signal to the three-dimensional movement mechanism according to the preset subsidence value and the preset horizontal movement value of the top end of the threedimensional movement mechanism, the top end of the three-dimensional movement mechanism drives the telescopic adhesive film to perform lifting movement and/or horizontal movement; during an experiment, surface movement and deformation required for simulation can be generated, and various surface movement and deformation processes and states are successfully simulated.
Throughout this specification, unless the context requires otherwise, the words “comprise”, “comprises” and “comprising” will be understood to imply the inclusion of a stated step or element or group of steps or elements but not the exclusion of any other step or element or group of steps or elements.
Any one of the terms: “including” or “which includes” or “that includes” as used herein is also an open term that also means including at least the elements/features that follow the term, but not excluding others.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic structural diagram of an experimental platform for simulating surface movement and deformation according to the present invention;
FIG. 2 is a schematic structural diagram of a three-dimensional movement mechanism of an experimental platform for simulating surface movement and deformation according to the present invention;
FIG. 3 is an enlarged view of a portion A in Embodiment 2;
FIG. 4 is a schematic structural diagram of three-dimensional movement mechanisms (including Y-direction movement and deformation mechanisms) in the present invention; and
FIG. 5 is an enlarged view of a portion B in FIG. 4.
In the figure, the reference numerals are indicated as follows: 100. equipment box, 200.
telescopic adhesive film, 300. three-dimensional movement mechanism, 310. Z-direction movement and deformation mechanism, 311. base, 312. Z-direction moving deformation motor, 313. Z-direction moving screw linear guideway sliding table, 314. guide rod, 315. supporting frame, 316. lower bottom plate, 317. side plate, 318. upper bottom plate, 319. guide sleeve, 320. Xdirection movement and deformation mechanism, 321. X-direction moving deformation motor, 322. X-direction moving screw linear guideway sliding table, 323. objective table, 330. Y-direction movement and deformation mechanism, 331. Y-direction moving deformation motor, 332. Ydirection moving screw linear guideway sliding table, 340. universal ball, 350. stud, 360. Xdirection moving limiting shading piece, 370. X-direction moving limiting photoelectric switch, 380. Z-direction moving photoelectric switch, 390. Z-direction moving limiting shading piece, 400. cable accommodating member.
DETAILED DESCRIPTION
Embodiment 1
As shown in FIGs. 1 and 2, an experimental platform for simulating surface movement and deformation of the present invention includes a telescopic adhesive film 200, three-dimensional movement mechanisms 300, a fixed base and a console. The telescopic adhesive film 200 is mounted at a top end of the three-dimensional movement mechanism 300, and the telescopic adhesive film 200 performs three-dimensional movement in horizontal X and Y directions and a vertical Z direction under the driving of the three-dimensional movement mechanism 300. The three-dimensional movement mechanism 300 is mounted on the fixed base, and a signal output end of the console is connected to a signal input end of the three-dimensional movement mechanism 300. A subsidence value and a horizontal movement value of the top end of the three-dimensional movement mechanism 300 are set through the console. The console sends a lifting movement and/or horizontal movement control signal to the three-dimensional movement mechanism 300 according to the preset subsidence value and the preset horizontal movement value of the top end of the three-dimensional movement mechanism 300. The top end of the three-dimensional movement mechanism 300 drives the telescopic adhesive film 200 to perform lifting movement and/or horizontal movement. During an experiment, surface movement and deformation required for simulation can be generated, and various surface movement and deformation processes and states are successfully simulated.
The three-dimensional movement mechanisms 300 are mounted on the fixed base in a mode of horizontal rows and vertical columns to form a moving deformation driving unit group. The number of the three-dimensional movement mechanisms 300 in each row is 4, and the number of the three-dimensional movement mechanisms 300 in each column is 6. The three-dimensional movement mechanisms 300 include X-direction movement and deformation mechanisms 320 and
Z-direction movement and deformation mechanisms 310. The telescopic adhesive film 200 reciprocates in an X direction under the driving of the X-direction movement and deformation mechanism 320, and the X-direction movement and deformation mechanism 320 reciprocates in a Z direction under the driving of the Z-direction movement and deformation mechanism 310. The X-direction movement and deformation mechanism 320 includes an X-direction moving deformation motor 321, an X-direction moving screw linear guideway sliding table 322 and an objective table 323. The Z-direction movement and deformation mechanism 310 includes a base 311, a Z-direction moving deformation motor 312, a Z-direction moving screw linear guideway sliding table 313 and a supporting frame 315. The telescopic adhesive film 200 is detachably connected to an upper end of the objective table 323, and a lower end of the objective table 323 is detachably connected to a sliding block of the X-direction moving screw linear guideway sliding table 322. A machine base of the X-direction moving screw linear guideway sliding table 322 and the X-direction moving deformation motor 321 are respectively mounted at an upper end of the supporting frame 315. A lower end of the supporting frame 315 is detachably connected with a sliding block of the Z-direction moving screw linear guideway sliding table 313. A lower end of the Z-direction moving screw linear guideway sliding table 313 is detachably connected with the base 311, and the Z-direction moving deformation motor 312 is mounted on the base 311. The Xdirection moving deformation motor 321 is in transmission connection with a lead screw of the Xdirection moving screw linear guideway sliding table 322. The Z-direction moving deformation motor 312 is in transmission connection with a lead screw of the Z-direction moving screw linear guideway sliding table 313. In this embodiment, the X-direction movement and deformation mechanism and the Z-direction movement and deformation mechanism can reciprocate in the Y direction.
The supporting frame 315 includes an upper bottom plate 318, a lower bottom plate 316 and two side plates 317. The X-direction moving screw linear guideway sliding table 322 is mounted on an upper plate surface of the upper bottom plate 318, and the X-direction moving deformation motor 321 is mounted on a lower plate surface of the upper bottom plate 318. The upper bottom plate 318 is fixedly connected with an upper end of the side plate 317, and a lower end of the side plate 317 is fixedly connected with an upper plate surface of the lower bottom plate 316. The lower bottom plate 316 is detachably connected with a sliding block of the Z-direction moving screw linear guideway sliding table 313. Four guide rods 314 are disposed on the base 311 around a circumference of a lead screw of the Z-direction moving screw linear guideway sliding table 313, and a lower end of the guide rod 314 is detachably connected with an upper plate surface of the base 311. An upper end of the guide rod 314 passes through a guide hole in the lower bottom plate 316 and is detachably connected with a supporting seat of the Z-direction moving screw linear guideway sliding table 313. The guide rod 314 located above the lower bottom plate 316 is sleeved with a guide sleeve 319, and a lower end of the guide sleeve 319 is fixedly connected with the upper plate surface of the lower bottom plate 316. The sliding block of the X-direction moving screw linear guideway sliding table 322 is provided with an X-direction moving limiting shading piece 360, and the upper bottom plate 318 is provided with an X-direction moving limiting photoelectric switch 370. When the sliding block of the X-direction moving screw linear guideway sliding table 322 reciprocates in an axial direction of the lead screw of the X-direction moving screw linear guideway sliding table 322. The X-direction moving limiting shading piece 360 passes between a transmitter and a receiver of the X-direction moving limiting photoelectric switch 370. An inner wall of the side plate 317 adjacent to the lower bottom plate 316 is provided with a Zdirection moving photoelectric switch 380. The supporting seat of the Z-direction moving screw linear guideway sliding table 313 is provided with a Z-direction moving limiting shading piece 390. When the sliding block of the Z-direction moving screw linear guideway sliding table 313 reciprocates in an axial direction of the lead screw of the Z-direction moving screw linear guideway sliding table 313, the Z-direction moving limiting shading piece 390 passes between a transmitter and a receiver of the Z-direction moving photoelectric switch 380.
In order to facilitate the movement of a main functional part (namely a functional part formed by assembling the telescopic adhesive film 200 and the three-dimensional movement mechanism 300) for surface movement and deformation simulation in the experimental platform for simulating surface movement and deformation of the present invention, in this embodiment, the experimental platform for simulating surface movement and deformation further includes an equipment box 100 which is open upwards. The three-dimensional movement mechanism 300 is mounted in the equipment box 100, and a bottom wall of the equipment box 100 is used as the fixed base. In the equipment box 100, a cable accommodating member 400 is disposed between two adjacent rows of three-dimensional movement mechanisms, and both ends of the cable accommodating member 400 are respectively fixedly connected with an inner wall of the equipment box 100.
In the present invention, under the conditions that the Z-direction movement and deformation mechanism 310 drives the X-direction movement and deformation mechanism 320 to move in the Z direction and the X-direction movement and deformation mechanism 320 drives the telescopic adhesive film 200 to move in the X direction, the telescopic adhesive film 200 connected to the objective table 323 performs movement after the movement in the Z direction and the movement in the X direction are combined. Under the conditions that different three-dimensional movement mechanisms 300 perform different Z-direction movement and deformations and X-direction movement and deformations, the local movement of the telescopic adhesive film 200 is affected by movement and deformation directions and displacement amounts of the different three dimensional movement mechanisms 300. As a result, the local movement of the telescopic adhesive film 200 is similar to the local movement of the surface in the surface movement and deformation to achieve the simulation of the surface movement and deformation. According to the experimental platform for simulating surface movement and deformation of the present invention, movements of different directions and different displacement amounts are compounded, so that the local deformation of the telescopic adhesive film 200 is similar to the local deformation of the surface in the coal mining process. Therefore, the simulation of changes of rock strata and surface movement with mining time and space in the coal mining process is achieved, which is further beneficial to scientifically and accurately analyzing the influence of coal mining on surface subsidence.
In order to make the deformation of the telescopic adhesive film 200 at the joint of the objective table 323 and the telescopic adhesive film 200 on the surface and the rock strata closer to the actual surface subsidence deformation, in this embodiment, the telescopic adhesive film 200 is detachably connected with a ball seat of a universal ball 340. A ball body of the universal ball 340 is detachably connected with the objective table 323 through a stud 350. A bottom surface of the universal ball 340 is a platform surface. When movement directions and displacement amounts of different threedimensional movement mechanisms 300 are different, the ball seat of the universal ball 340 connected with the telescopic adhesive film 200 is overturned to different degrees under the action of pulling force. As a result, the deformation of the telescopic adhesive film 200 is closer to the surface movement and deformation in the process of surface subsidence.
In order to avoid mutual interference between two adjacent moving units, namely collision of sliding blocks between the X-direction moving screw linear guideway sliding tables 322 driven by the X-direction moving deformation motor 321, there is a gap between two adjacent threedimensional movement mechanisms 300.
In the actual simulation experiment process, it is necessary to control a displacement amount of the sliding block in the X-direction moving screw linear guideway sliding table 322 and a displacement amount of the sliding block in the Z-direction moving screw linear guideway sliding table 313, that is, displacement amounts of lifting movement and horizontal movement of the threedimensional movement mechanism 300 are controlled by the console. In the present invention, the X-direction moving deformation motors 321 and the Z-direction moving deformation motors 312 are controlled through displacement amount data of the preset lifting movement and the preset horizontal movement through the console. All the X-direction moving deformation motors 321 and all the Z-direction moving deformation motors 312 can be synchronously controlled, and thus the surface movement and deformation simulation is more accurate.
According to actual simulation requirements, a Y-direction movement and deformation mechanism can be added between the X-direction movement and deformation mechanism 320 and the Z-direction movement and deformation mechanism 310. The X-direction movement and deformation mechanism 320 is mounted on the Y-direction movement and deformation mechanism through a base. The X-direction movement and deformation mechanism 320 and the Y-direction movement and deformation mechanism are mounted on the lower bottom plate 316. In this way, the lower bottom plate 316 drives the X-direction movement and deformation mechanism 320 and the Y-direction movement and deformation mechanism to jointly move up and down, while the Xdirection movement and deformation mechanism 320 as a whole moves in the Y direction under the action of the Y-direction movement and deformation mechanism.
Embodiment 2
An experimental platform for simulating surface movement and deformation in this embodiment is different from the experimental platform for simulating surface movement and deformation in Embodiment 1 in that the three-dimensional movement mechanism 300 further includes a Y-direction movement and deformation mechanism 330, and the X-direction movement and deformation mechanism 320 and the Z-direction movement and deformation mechanism 310 reciprocate in the Y direction under the driving of the Y-direction movement and deformation mechanism 330. The Y-direction movement and deformation mechanism 330 includes a Ydirection moving deformation motor 331, a Y-direction moving screw linear guideway sliding table 332 and a Y-direction moving deformation base. The base 311 is detachably connected with a sliding block of the Y-direction moving screw linear guideway sliding table 332. The Y-direction moving screw linear guideway sliding table 332 and the Y-direction moving deformation motor 331 are respectively mounted on the Y-direction moving deformation base. The Y-direction moving deformation base is mounted on the fixed base. A bottom wall of the equipment box 100 is used as the fixed base. The Y-direction moving deformation motor is in transmission connection with a lead screw of the Y-direction moving screw linear guideway sliding table. Besides, the Xdirection moving deformation motor 321, the Y-direction moving deformation motor 331 and the Z-direction moving deformation motor 312 are respectively in communication connection with the console.
In the process of surface subsidence, influenced by various factors such as a mining method and a roof management method, lithology, mining depth, mining thickness, goaf size and shape, seam inclination, repeated mining times, geological structure, stratum structure, hydrogeological conditions and topography, the surface, rock strata or coal seam moves and deforms under the action of structural stress. Moreover, these movements and deformations are obviously different due to the influence of the local geological structure, stratum structure, hydrogeological conditions and other factors. Existing surface subsidence simulation experimental device can only simulate the overall deformations of the surface, rock strata or coal seam, and cannot reflect the difference between local deformations of the surface, the rock strata or the coal seam on the basis of the overall deformations of the surface, the rock strata or the coal seam. The independent movements of the X-direction movement and deformation mechanism 320, the Y-direction movement and deformation mechanism 330 and the Z-direction movement and deformation mechanism 310 can not only simulate and analyze the deformations of the surface, the rock strata or the coal seam as a whole, but also simulate and analyze the local deformations of the surface, the rock strata or the coal seam.
In the present invention, the Z-direction movement and deformation mechanism 310 moves in the Y direction under the driving of the Y-direction movement and deformation mechanism 330. The X-direction movement and deformation mechanism 320 moves in the Z direction under the driving of the Z-direction movement and deformation mechanism 310. The telescopic adhesive film 200 moves in the X direction under the driving of the X-direction movement and deformation mechanism 320. Here, the telescopic adhesive film 200 refers to a part of the telescopic adhesive film 200 with a connecting point connected with the base 311 of the universal ball 330 as the center. The actual movement of the telescopic adhesive film 200 is obtained after movements in three directions are combined. Besides, the independent operations of the X-direction moving deformation motor 321, the Y-direction moving deformation motor 331 and the Z-direction moving deformation motor 312 can not only be used to simulate and analyze the deformations of the surface, the rock strata or the coal seam as a whole, but also be used to simulate and analyze the local deformations of the surface, the rock strata or the coal seam. A combination of a position change amount of the sliding block of the Y-direction moving screw linear guideway sliding table 332 in the Y direction, a position change amount of the sliding block of the Z-direction moving screw linear guideway sliding table 313 in the Z direction and a position change amount of the sliding block of the X-direction moving screw linear guideway sliding table 322 in the X direction can reflect the overall deformations and local deformations of the surface, the rock strata or the coal seam three-dimensionally.
Obviously, the foregoing embodiments are merely examples for clear explanation and are not intended to limit embodiments. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the foregoing description. All embodiments need not and cannot be exhaustive here. However, obvious changes or variations thus introduced still fall within the protection scope of the claims in the present patent application.
Claims (5)
- What is claimed is:1. An experimental platform for simulating surface movement and deformation, comprising a telescopic adhesive film, three-dimensional movement mechanisms, a fixed base and a console, wherein the telescopic adhesive film is mounted at a top end of the three-dimensional movement mechanism, the telescopic adhesive film performs three-dimensional movement in horizontal X and Y directions and a vertical Z direction under the driving of the three-dimensional movement mechanism, the three-dimensional movement mechanism is mounted on the fixed base, and a signal output end of the console is connected to a signal input end of the three-dimensional movement mechanism; a subsidence value and a horizontal movement value of the top end of the threedimensional movement mechanism are set through the console; the console sends a lifting movement and/or horizontal movement control signal to the three-dimensional movement mechanism according to the preset subsidence value and the preset horizontal movement value of the top end of the three-dimensional movement mechanism, the top end of the three-dimensional movement mechanism drives the telescopic adhesive film to perform lifting movement and/or horizontal movement; during an experiment, surface movement and deformation required for simulation can be generated, and various surface movement and deformation processes and states are successfully simulated.
- 2. The experimental platform for simulating surface movement and deformation according to claim 1, wherein the number of the three-dimensional movement mechanisms is m * n, the threedimensional movement mechanisms are arrayed in m rows and n columns; and the threedimensional movement mechanisms are mounted on the fixed base to form a three-dimensional movement mechanism group, preferably, wherein m and n are each greater than or equal to 3, so as to completely simulate movement and deformation amounts of subsidence, inclination, curvature, distortion, horizontal movement, horizontal deformation and shear strain.
- 3. The experimental platform for simulating surface movement and deformation according to any one of claims 1 to 2, wherein the three-dimensional movement mechanisms comprise Xdirection movement and deformation mechanisms and Z-direction movement and deformation mechanisms, the telescopic adhesive film reciprocates in an X direction under the driving of the Xdirection movement and deformation mechanism, and the X-direction movement and deformation mechanism reciprocates in a Z direction under the driving of the Z-direction movement and deformation mechanism; the X-direction movement and deformation mechanism comprises an Xdirection moving deformation motor, an X-direction moving screw linear guideway sliding table and an objective table; the Z-direction movement and deformation mechanism comprises a base, a Z-direction moving deformation motor, a Z-direction moving screw linear guideway sliding table and a supporting frame; the telescopic adhesive film is detachably connected to an upper end of the objective table, a lower end of the objective table is detachably connected to a sliding block of the X-direction moving screw linear guideway sliding table, a machine base of the X-direction moving screw linear guideway sliding table and the X-direction moving deformation motor are respectively mounted at an upper end of the supporting frame, a lower end of the supporting frame is detachably connected with a sliding block of the Z-direction moving screw linear guideway sliding table, a lower end of the Z-direction moving screw linear guideway sliding table is detachably connected with the base, and the Z-direction moving deformation motor is mounted on the base; the Xdirection moving deformation motor is in transmission connection with a lead screw of the Xdirection moving screw linear guideway sliding table; and the Z-direction moving deformation motor is in transmission connection with a lead screw of the Z-direction moving screw linear guide way sliding table.
- 4. The experimental platform for simulating surface movement and deformation according to claim 3, wherein the telescopic adhesive film is detachably connected with a ball seat of a universal ball, and a ball body of the universal ball is detachably connected with the objective table through a stud;wherein the supporting frame comprises an upper bottom plate, a lower bottom plate and two side plates, the X-direction moving screw linear guideway sliding table is mounted on an upper plate surface of the upper bottom plate, the X-direction moving deformation motor is mounted on a lower plate surface of the upper bottom plate, the upper bottom plate is fixedly connected with an upper end of the side plate, a lower end of the side plate is fixedly connected with an upper plate surface of the lower bottom plate, and the lower bottom plate is detachably connected with a sliding block of the Z-direction moving screw linear guideway sliding table, preferably, wherein a guide rod is disposed on the base around a circumference of a lead screw of the Z-direction moving screw linear guideway sliding table, a lower end of the guide rod is detachably connected with an upper plate surface of the base, an upper end of the guide rod passes through a guide hole in the lower bottom plate and is detachably connected with a supporting seat of the Z-direction moving screw linear guideway sliding table; the guide rod located above the lower bottom plate is sleeved with a guide sleeve, and a lower end of the guide sleeve is fixedly connected with the upper plate surface of the lower bottom plate, further preferably, wherein the sliding block of the X-direction moving screw linear guideway sliding table is provided with an X-direction moving limiting shading piece, the upper bottom plate is provided with an X-direction moving limiting photoelectric switch, and when the sliding block of the X-direction moving screw linear guideway sliding table reciprocates in an axial direction of the lead screw of the X-direction moving screw linear guideway sliding table, the X-direction moving limiting shading piece passes between a transmitter and a receiver of the X-direction moving limiting photoelectric switch; an inner wall of the side plate adjacent to the lower bottom plate is provided with a Z-direction moving photoelectric switch, the supporting seat of the Z-direction moving screw linear guideway sliding table is provided with a Z-direction moving limiting shading piece, and when the sliding block of the Z-direction moving screw linear guideway sliding table reciprocates in an axial direction of the lead screw of the Z-direction moving screw linear guideway sliding table, the Z-direction moving limiting shading piece passes between a transmitter and a receiver of the Z-direction moving photoelectric switch.
- 5. The experimental platform for simulating surface movement and deformation according to claim 3, wherein the three-dimensional movement mechanism further comprises a Y-direction movement and deformation mechanism, and the X-direction movement and deformation mechanism and the Z-direction movement and deformation mechanism reciprocate in the Y direction under the driving of the Y-direction movement and deformation mechanism, preferably, wherein the Y-direction movement and deformation mechanism comprises a Y-direction moving deformation motor, a Y-direction moving screw linear guideway sliding table and a Y-direction moving deformation base, the base is detachably connected with a sliding block of the Y-direction moving screw linear guideway sliding table, the Y-direction moving screw linear guideway sliding table and the Y-direction moving deformation motor are respectively mounted on the Y-direction moving deformation base, and the Y-direction moving deformation motor is in transmission connection with a lead screw of the Y-direction moving screw linear guideway sliding table; the X-direction moving deformation motor, the Y-direction moving deformation motor and the Zdirection moving deformation motor are respectively in communication connection with the console; the experimental platform for simulating surface movement and deformation further comprises an equipment box which is open upwards, the three-dimensional movement mechanism is mounted in the equipment box, and a bottom wall of the equipment box is used as the fixed base; in the equipment box, a cable accommodating member is disposed between two adjacent rows of three-dimensional movement mechanisms, and both ends of the cable accommodating member are respectively fixedly connected with an inner wall of the equipment box.
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| CN201910004503.9 | 2019-01-03 | ||
| CN201910004503.9A CN109686214B (en) | 2019-01-03 | 2019-01-03 | Simulation experiment platform for ground surface movement deformation |
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| AU2020100000A4 true AU2020100000A4 (en) | 2020-02-13 |
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| CN111751873A (en) * | 2020-07-02 | 2020-10-09 | 中国安全生产科学研究院 | Metal mine goaf micro-seismic wave propagation law simulation test device and method |
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| CN110364066B (en) * | 2019-07-16 | 2021-07-02 | 王晓花 | Similar experiment model device in mine surface subsidence area |
| CN112462033B (en) * | 2020-11-12 | 2022-09-02 | 华北科技学院 | Analog simulation experiment device for automatic mining of coal mine |
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| JP4834833B2 (en) * | 2006-02-16 | 2011-12-14 | 国立大学法人山口大学 | Braille reading device with tactile sensing mechanism |
| JP5058948B2 (en) * | 2008-11-17 | 2012-10-24 | コスモ石油株式会社 | Geological state three-dimensional display |
| CN203643271U (en) * | 2013-12-24 | 2014-06-11 | 中国矿业大学 | Self-balancing portal surface-deformation-resistant experimental device |
| CN203931348U (en) * | 2014-07-09 | 2014-11-05 | 黑龙江建筑职业技术学院 | For demonstrating the simulation sand table integrated system of Building Construction |
| CN104077951A (en) * | 2014-07-24 | 2014-10-01 | 上海复旦上科多媒体有限公司 | Dynamic lifting sand table |
| CN106687182A (en) * | 2014-11-21 | 2017-05-17 | Vr移动地面有限责任公司 | Moving floor for interactions with virtual reality systems and uses thereof |
| CN205158768U (en) * | 2015-10-26 | 2016-04-13 | 中国科学院地理科学与资源研究所 | Diastrophe analogue means and system |
| CN105913736B (en) * | 2016-04-27 | 2019-01-11 | 沈阳工业大学 | Full landform blower layout simulation's device and full landform blower layout simulation method |
| CN206833798U (en) * | 2017-04-11 | 2018-01-02 | 中国人民解放军装甲兵工程学院 | A kind of quick sand table generation system |
| CN207571955U (en) * | 2017-08-30 | 2018-07-03 | 中国石油天然气股份有限公司 | Basin strike-slip fault zone physical analogy equipment |
| CN207946097U (en) * | 2018-02-08 | 2018-10-09 | 广州帝森装饰工程有限公司 | A kind of automatic monitoring mark for road level displacement, sedimentation |
| CN209674671U (en) * | 2019-01-03 | 2019-11-22 | 中国矿业大学(北京) | A kind of surface movement and deformation simulation experiment platform |
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| CN111751873A (en) * | 2020-07-02 | 2020-10-09 | 中国安全生产科学研究院 | Metal mine goaf micro-seismic wave propagation law simulation test device and method |
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| CN109686214B (en) | 2023-12-01 |
| CN109686214A (en) | 2019-04-26 |
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