A grouting simulation device for steeply inclined goaf areas

Abstract

The present invention discloses a steeply inclined goaf grouting simulation device, including an adjustment drive assembly, a protective frame and a test assembly are installed on the upper wall of the adjustment drive assembly, the test assembly is movably connected in the protective frame, the adjustment drive assembly includes a drive assembly and an adjustment assembly, and the drive assembly is provided with two groups, and the two groups of drive assemblies are respectively arranged on both sides of the adjustment assembly. The present invention belongs to the technical field of goaf grouting management, and the inclination angle of the steeply inclined goaf can be simulated by adjusting the inclination angle of the inclined plate, the gas in the elastic bag enters the fixed bag, and the fixed bag bulges and fits the inner wall of the grouting box to achieve the fixation of the inclined plate; since the upper end of the driving plate is the force application point, the driving plate drives the moving plate to rotate with the limited end as the rotation axis, the driving plate drives the clamping part to move up along the second limiting groove, and the moving plate drives the grouting box to flip 90 degrees, so that it is convenient to sample the stone body for strength test.

Description

Technical Field

[0001] The invention belongs to the technical field of grouting treatment of goaf areas, and in particular relates to a grouting simulation device for steeply inclined goaf areas. Background Art

[0002] Goafs with a mining inclination angle greater than 55 degrees are called steeply inclined goafs, which account for a considerable proportion in coal-deficient areas in western and southern my country. At present, there are more than 100 steeply inclined coal seam mining mines in my country, covering more than 20 mining areas across the country. Steeply inclined coal seam goafs are a historical legacy of my country's mining of mineral resources and economic development. Due to the mining of mineral resources, large-scale old goafs have been formed. In recent years, as ground resources have become increasingly scarce, the available area on the ground has become less and less. Many high-rise buildings need to be built above steeply inclined goafs, so there is an urgent need to manage steeply inclined goafs.

[0003] At present, most of the treatment methods for steeply inclined goafs are grouting treatment. However, due to the complex and diverse conditions inside the steeply inclined goafs, there are natural and artificial factors such as water, pressure and cracks, which will affect the fluidity and stability of the slurry. The existing model device cannot observe the condition of the slurry, and when simulating the steeply inclined goaf, it is also impossible to conveniently adjust and fix the inclination angle, and it also cannot provide a convenient sampling environment. Based on this, the present invention proposes a grouting simulation device for steeply inclined goafs. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a grouting simulation device for a steeply inclined goaf area, which at least partially solves the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention is as follows: a steeply inclined goaf area grouting simulation device, comprising an adjustment drive assembly for support and driving, a protection frame and a test assembly are installed on the upper wall of the adjustment drive assembly, the test assembly is movably connected in the protection frame, the adjustment drive assembly comprises a drive assembly and an adjustment assembly, the drive assembly is provided with two groups, and the two groups of the drive assemblies are respectively arranged on both sides of the adjustment assembly;

[0006] The driving assembly includes a mounting plate, the lower end of the mounting plate is connected to the side wall of the adjustment assembly, the adjustment assembly supports and fixes the mounting plate, the side wall of the upper end of the mounting plate is provided with a limiting groove 1, a slider is movably clamped in the limiting groove 1, a connecting piece is installed on the side wall of the slider, a limiting groove 2 is provided in the connecting piece, a clamping piece is movably installed in the limiting groove 2, the clamping piece can slide up and down along the limiting groove 2, one end of the clamping piece extends out of the side wall of the connecting piece, a driving plate is movably installed on one end of the clamping piece, and the lower end of the driving plate is connected to the adjustment assembly.

[0007] Among them, the test component includes a grouting box, a slurry conveying device and an environmental simulation device. The lower end of the grouting box is installed on the upper wall of the adjustment component, and the adjustment component supports and fixes the grouting box. The environmental simulation device is arranged in the grouting box to simulate the environment inside the goaf. The output end of the slurry conveying device is through-connected with the upper end of the grouting box, which is convenient for conveying the slurry into the grouting box.

[0008] Furthermore, the environmental simulation device includes a rotating shaft, an inclined plate and a pushing plate, the pushing plate is movably connected to the inner bottom wall of the grouting box, a hydraulic rod 2 is installed on the inner side wall of the grouting box, the movable end of the hydraulic rod 2 is connected to the side wall of the pushing plate, the rotating shaft is arranged on the side wall of the grouting box, the inclined plate is arranged in the grouting box, and the center position of the inclined plate is movably connected to the rotating shaft, a telescopic seat is installed on the upper wall of the pushing plate, the height of the telescopic seat can be adjusted, and the lower end of the inclined plate is movably connected to the telescopic seat.

[0009] Preferably, a flexible part 1 is installed between the lower ends of the inclined plates, and a flexible part 2 is installed between the side walls of the inclined plates. The flexible part 1 is arranged in contact with the upper wall of the push plate, and the flexible part 2 is arranged in contact with the inner wall of the grouting box. The arrangement of the flexible part 1 and the flexible part 2 facilitates deformation when the inclination of the inclined plate is adjusted. The flexible part 1, the flexible part 2 and the inclined plates are set as a test cavity.

[0010] As a preferred embodiment of the present invention, ventilation cavities are provided in the two side walls of the inclined plate close to the inner wall of the grouting box, and the side walls of the inclined plate are also provided with a fixed bag, and the ventilation cavity is through-connected with the fixed bag, and an elastic bag is installed on the inner wall of the grouting box, and the elastic bag is a hollow structure with one end open, and the elastic bags are respectively arranged at the upper end and the lower end of the grouting box, and an extrusion plate is installed at the opening of the elastic bag. When force is applied to the elastic bag and the fixed bag at the same time, the deformation of the fixed bag is larger, and an extrusion piece is installed between the extrusion plate and the inclined plate, and the extrusion piece is filled with gas, and an air duct is installed on the elastic bag, and the other end of the air duct is through-connected with the ventilation cavity, and the elastic bag, the extrusion plate and the grouting box are sealed. The air duct connects the ventilation cavity and the elastic bag, and a control valve is arranged in the air duct to facilitate control of the gas flow in the elastic bag and the ventilation cavity.

[0011] Furthermore, the environmental simulation device also includes a water inlet pipe and a water outlet pipe. The water inlet pipe is arranged at the upper end of one side wall of the grouting box and is connected with the test cavity. The water outlet pipe is arranged at the lower end of the other side wall of the grouting box and is connected with the test cavity. A flow meter is installed on the water outlet pipe. Switches are provided on the water inlet pipe and the water outlet pipe to facilitate the control of the opening or closing of the water inlet pipe and the water outlet pipe.

[0012] Furthermore, the environmental simulation device also includes an inflator, an air inlet pipe and a pressure gauge, the air inlet pipe is connected to the side wall of the grouting box, the inflator is connected to the air inlet pipe, and the pressure gauge is arranged on the upper wall of the grouting box.

[0013] Furthermore, the slurry conveying device includes a barrel filled with cement fly ash slurry, a pump is installed on the upper wall of the barrel, a transport pipe 1 is installed at the output end of the pump, and the transport pipe 1 is made of a foldable material. A transport pipe 2 is installed at the suction end of the pump, and the other end of the transport pipe 1 passes through the grouting box and is connected to the test cavity, and the other end of the transport pipe 2 is connected to the barrel.

[0014] Preferably, the adjustment assembly includes a base plate, a support member is installed on the upper wall of the base plate, a fixing plate is installed on the upper wall of the support member, the lower end of the mounting plate is connected to the side wall of the support member, the support member supports and fixes the mounting plate, a limiting plate is installed on the end of the fixing plate away from the protective frame, a card slot is provided in the limiting plate, a movable plate is movably installed on the upper wall of the fixing plate, the lower end of the driving plate is connected to the end of the movable plate close to the protective frame, a roller for easy driving is installed on the side wall of the movable plate, the roller is movably arranged on the upper wall of the fixing plate, and the lower end of the grouting box is installed on the movable plate.

[0015] As a further preferred embodiment of the present invention, the grouting box adopts an organic glass shell, a top cover is provided at the upper end of the grouting box, a steel support is provided on the side wall, and the inclined plate, the protective frame and the flexible part are all made of transparent materials; the pressure gauge is arranged on the top cover, and a slurry fluidity monitor is also installed on the top cover. The function of the slurry fluidity monitor is mainly to monitor the fluidity of the slurry inside the grouting box. A slurry stability monitor is installed on the inclined plate. The function of the slurry stability monitor is mainly to monitor the stability of the slurry injected into the grouting box, including the coagulation and water separation of the slurry.

[0016] Among them, a support plate is installed on the base plate, and the support plate is provided with two groups. The two groups of support plates are respectively arranged on both sides of the base plate, and the support plate is arranged at one end of the mounting plate. A hydraulic rod 1 is installed on the upper end of the support plate, and the movable end of the hydraulic rod 1 is connected to the slider.

[0017] After adopting the above structure, the beneficial effects of the present invention are as follows:

[0018] (1) The clamping part drives the driving plate to move, the driving plate drives the movable plate to move along the fixed plate, the movable plate drives the grouting box to move into the protective frame, and the protective frame protects the grouting box.

[0019] (2) By adjusting the inclination angle of the inclined plate, the inclination angle of the steeply inclined goaf can be simulated. The gas in the elastic bag enters the ventilation cavity through the air duct, and the gas in the ventilation cavity enters the fixed bag. The fixed bag bulges and fits the inner wall of the grouting box to fix the inclined plate.

[0020] (3) The hydrodynamic environment inside the test chamber can be set to a specified range. In a water-filled environment or a flowing water environment, the relevant data on groundwater velocity and flow rate in the simulated area can be found based on the engineering geology and hydrogeology reports of the simulated area, and the opening size of the water inlet and outlet can be adjusted according to the scale to adjust the flow rate and flow rate.

[0021] (4) When waiting for the formation of the stone body and sampling of the stone body is needed, the slider moves. Since the upper end of the driving plate is the force application point, the driving plate drives the movable plate to rotate with the limited end as the rotation axis. The driving plate pushes the clamping part to move upward along the second limiting groove. After the movable plate drives the grouting box to flip 90 degrees, it is convenient to sample the stone body for strength testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] Figure 1 This is a schematic structural diagram of a steeply inclined goaf area grouting simulation device proposed by the present invention;

[0024] Figure 2 A stereoscopic diagram of a steeply inclined goaf area grouting simulation device proposed by the present invention;

[0025] Figure 3 A schematic diagram of the structure of the test assembly proposed by the present invention;

[0026] Figure 4 A diagram showing the position relationship between the water inlet pipe and the aerator proposed by the present invention;

[0027] Figure 5 A cross-sectional view of the test assembly proposed by the present invention;

[0028] Figure 6 for Figure 5 A local enlarged view of point A;

[0029] Figure 7 This is a schematic diagram of the structure of the adjustment drive assembly proposed by the present invention;

[0030] Figure 8 A three-dimensional diagram of the adjustment drive assembly proposed by the present invention.

[0031] In the accompanying drawings: 1. Adjustment drive assembly, 2. Protection frame, 3. Test assembly, 4. Drive assembly, 5. Adjustment assembly, 6. Mounting plate, 7. Limiting groove 1, 8. Sliding block, 9. Connecting piece, 10. Limiting groove 2, 11. Snap-fit ​​piece, 12. Drive plate, 13. Grouting box, 14. Slurry conveying device, 15. Environmental simulation device, 16. Rotating shaft, 17. Inclined plate, 18. Pushing plate, 19. Hydraulic rod 2, 20. Telescopic seat, 21. Flexible member 1, 22. Flexible member 2, 23. Ventilation cavity, 24. Fixed bag, 25. Elastic bag, 26. , extrusion plate, 27, extrusion part, 28, air guide tube, 29, water inlet pipe, 30, water outlet pipe, 31, inflator, 32, air inlet pipe, 33, pressure gauge, 34, barrel, 35, pump, 36, transport pipe one, 37, transport pipe two, 38, bottom plate, 39, support, 40, fixed plate, 41, limit plate, 42, slot, 43, movable plate, 44, roller, 45, plexiglass shell, 46, top cover, 47, steel support, 48, slurry fluidity monitor, 49, slurry stability monitor, 50, hydraulic rod one, 51, test chamber. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] like Figure 1-Figure 8 As shown, a steeply inclined goaf area grouting simulation device includes an adjustment drive assembly 1 for support and driving, a protection frame 2 and a test assembly 3 are installed on the upper wall of the adjustment drive assembly 1, and the test assembly 3 is movably connected and arranged in the protection frame 2. The adjustment drive assembly 1 includes a drive assembly 4 and an adjustment assembly 5. The drive assembly 4 is provided with two groups, and the two groups of the drive assembly 4 are respectively arranged on both sides of the adjustment assembly 5;

[0035] The driving component 4 includes a mounting plate 6, the lower end of the mounting plate 6 is connected to the side wall of the adjusting component 5, the adjusting component 5 supports and fixes the mounting plate 6, the upper end side wall of the mounting plate 6 is provided with a limiting groove 17, a slider 8 is movably clamped in the limiting groove 17, a connecting piece 9 is installed on the side wall of the slider 8, a limiting groove 2 10 is provided in the connecting piece 9, a clamping piece 11 is movably installed in the limiting groove 2 10, the clamping piece 11 can slide up and down along the limiting groove 2 10, one end of the clamping piece 11 extends out of the side wall of the connecting piece 9, a driving plate 12 is movably installed on one end of the clamping piece 11, and the lower end of the driving plate 12 is connected to the adjusting component 5.

[0036] The test component 3 includes a grouting box 13, a slurry conveying device 14 and an environmental simulation device 15. The lower end of the grouting box 13 is installed on the upper wall of the adjustment component 5. The adjustment component 5 supports and fixes the grouting box 13. The environmental simulation device 15 is arranged in the grouting box 13 to simulate the environment inside the goaf. The output end of the slurry conveying device 14 is through-connected with the upper end of the grouting box 13 to facilitate the conveying of slurry into the grouting box 13.

[0037] The environmental simulation device 15 includes a rotating shaft 16, an inclined plate 17 and a pushing plate 18, wherein the pushing plate 18 is movably connected to the inner bottom wall of the grouting box 13, a hydraulic rod 19 is installed on the inner side wall of the grouting box 13, and the movable end of the hydraulic rod 19 is connected to the side wall of the pushing plate 18, the rotating shaft 16 is arranged on the side wall of the grouting box 13, the inclined plate 17 is arranged in the grouting box 13, and the center position of the inclined plate 17 is movably connected to the rotating shaft 16, a telescopic seat 20 is installed on the upper wall of the pushing plate 18, and the height of the telescopic seat 20 can be adjusted, and the lower end of the inclined plate 17 is movably connected to the telescopic seat 20, and the function of the inclined plate 17 is to simulate different angles of the steeply inclined goaf;

[0038] It should be noted that the hydraulic rod 19 drives the push plate 18 to move, the push plate 18 drives the telescopic seat 20 to move, the telescopic seat 20 drives the lower end of the inclined plate 17 to move, the inclined plate 17 rotates around the rotating shaft 16 as the rotation center, and at the same time the inclined plate 17 lifts the telescopic seat 20, and the height of the telescopic seat 20 increases. When the hydraulic rod 19 drives the push plate 18 to move in the opposite direction, the push plate 18 drives the telescopic seat 20 to move in the opposite direction, and the inclined plate 17 rotates in the opposite direction around the rotating shaft 16 as the rotation center under the action of the telescopic seat 20, and the height of the telescopic seat 20 decreases.

[0039] A flexible part 21 is installed between the lower ends of the inclined plates 17, and a flexible part 22 is installed between the side walls of the inclined plates 17. The flexible part 21 is arranged to fit the upper wall of the push plate 18, and the flexible part 22 is arranged to fit the inner wall of the grouting box 13. The arrangement of the flexible part 21 and the flexible part 22 facilitates deformation when the inclined plate 17 adjusts its inclination. A test cavity 51 is set between the flexible part 21, the flexible part 22 and the inclined plate 17.

[0040] The inclined plate 17 is provided with a ventilation cavity 23 on both sides of the inner wall of the grouting box 13, and the side wall of the inclined plate 17 is also provided with a fixed bag 24, and the ventilation cavity 23 is connected with the fixed bag 24 through, and the inner wall of the grouting box 13 is installed with an elastic bag 25, and the elastic bag 25 is a cavity structure with one end open, and the elastic bag 25 is respectively arranged at the upper end and the lower end of the grouting box 13, and the opening of the elastic bag 25 is installed with a squeezing plate 26, and when the elastic bag 25 and the fixed bag 24 are applied with force at the same time, the fixed bag 2 4 has a larger deformation amount, an extrusion piece 27 is installed between the extrusion plate 26 and the inclined plate 17, and the extrusion piece 27 is filled with gas. An air guide tube 28 is installed on the elastic bag 25, and the other end of the air guide tube 28 is connected with the ventilation cavity 23. The elastic bag 25, the extrusion plate 26 and the grouting box 13 are sealed. The air guide tube 28 connects the ventilation cavity 23 and the elastic bag 25. A control valve is arranged in the air guide tube 28 to facilitate the control of the gas flow in the elastic bag 25 and the ventilation cavity 23;

[0041] It should be noted that when the inclined plate 17 is tilted, the extrusion piece 27 is squeezed, the extrusion piece 27 squeezes the extrusion plate 26, and the extrusion plate 26 squeezes the elastic bag 25. When the inclined plate 17 is tilted to a suitable angle, the control valve in the air duct 28 is opened, and the gas in the elastic bag 25 enters the ventilation cavity 23 through the air duct 28, and the gas in the ventilation cavity 23 enters the fixing bag 24. The fixing bag 24 bulges and fits the inner wall of the grouting box 13 to fix the inclined plate 17, and the control valve in the air duct 28 is closed.

[0042] The environmental simulation device 15 further includes a water inlet pipe 29 and a water outlet pipe 30. The water inlet pipe 29 is disposed at the upper end of one side wall of the grouting box 13 and is connected to the test cavity 51. The water outlet pipe 30 is disposed at the lower end of the other side wall of the grouting box 13 and is connected to the test cavity 51. A flow meter is installed on the water outlet pipe 30. Switches are provided on the water inlet pipe 29 and the water outlet pipe 30 to facilitate the control of opening or closing of the water inlet pipe 29 and the water outlet pipe 30.

[0043] It should be noted that the function of the water inlet pipe 29 and the water outlet pipe 30 is to set the hydrodynamic environment inside the test chamber 51 to a specified range. The hydrodynamic environment of the steeply inclined goaf area includes a waterless environment, a water-filled environment and a flowing water environment. Closing the water inlet pipe 29 and the water outlet pipe 30 means setting it to a waterless environment; opening the water inlet pipe 29 and closing the water outlet pipe 30 to fill the water to 1 / 2 or more means setting it to a water-filled state; closing the water outlet pipe 30 and opening the water inlet pipe 29 to fill the water to 1 / 2, then opening the water outlet pipe 30 to keep the water flowing, means setting it to a flowing water environment. The function of the flow meter is to record the water flow velocity and adjust the water flow rate and flow velocity in time according to the selected goaf data.

[0044] The environmental simulation device 15 further includes an inflator 31, an air inlet pipe 32 and a pressure gauge 33, wherein the air inlet pipe 32 is connected to the side wall of the grouting box 13, the inflator 31 is connected to the air inlet pipe 32, and the pressure gauge 33 is arranged on the upper wall of the grouting box 13;

[0045] It should be noted that the function of the inflator 31 is to set the internal pressure environment of the grouting box 13 to a specified size, and the function of the pressure gauge 33 is to facilitate the observation of the size of the pressure in the box and to make timely adjustments to the pressure in the box.

[0046] The slurry conveying device 14 includes a barrel 34, which is filled with cement fly ash slurry. A pump 35 is installed on the upper wall of the barrel 34. A transport pipe 36 is installed at the output end of the pump 35. The transport pipe 36 is made of a foldable material. A transport pipe 37 is installed at the suction end of the pump 35. The other end of the transport pipe 36 passes through the grouting box 13 and is connected to the test cavity 51. The other end of the transport pipe 37 is connected to the barrel 34. The function of the pump 35 is to suck the slurry into the pipe, and the function of the transport pipe 36 is to smoothly transport the slurry to the test cavity 51 in the grouting box 13.

[0047] The adjustment assembly 5 includes a base plate 38, a support member 39 is installed on the upper wall of the base plate 38, a fixing plate 40 is installed on the upper wall of the support member 39, the lower end of the mounting plate 6 is connected to the side wall of the support member 39, the support member 39 supports and fixes the mounting plate 6, a limiting plate 41 is installed at the end of the fixing plate 40 away from the protective frame 2, a card slot 42 is provided in the limiting plate 41, a movable plate 43 is movably installed on the upper wall of the fixing plate 40, the lower end of the driving plate 12 is connected to the end of the movable plate 43 close to the protective frame 2, the side wall of the movable plate 43 is installed with a roller 44 for easy driving, the roller 44 is movably arranged on the upper wall of the fixing plate 40, and the lower end of the grouting box 13 is installed on the movable plate 43.

[0048] In this embodiment, the grouting box 13 adopts an organic glass shell 45, a top cover 46 is provided at the upper end of the grouting box 13, and a steel support 47 is provided on the side wall; the pressure gauge 33 is arranged on the top cover 46, and a slurry fluidity monitor 48 is also installed on the top cover 46. The function of the slurry fluidity monitor 48 is mainly to monitor the fluidity of the slurry inside the grouting box 13; a slurry stability monitor 49 is installed on the inclined plate 17. The function of the slurry stability monitor 49 is mainly to monitor the stability of the slurry injected into the grouting box 13, including the coagulation and water separation of the slurry; the organic glass shell 45 and the transparent material are for observing the entire grouting process, the function of the top cover 46 is to keep the entire equipment in a sealed state during the simulated grouting process, and the function of the steel support 47 and the protective frame 2 is to reinforce the grouting box 13 to prevent the grouting box 13 from cracking due to excessive pressure during the grouting process.

[0049] A support plate is installed on the bottom plate 38. The support plate is provided with two groups. The two groups of support plates are respectively arranged on both sides of the bottom plate 38. The support plate is arranged at one end of the mounting plate 6. A hydraulic rod 50 is installed on the upper end of the support plate. The movable end of the hydraulic rod 50 is connected to the slider 8.

[0050] It should be noted that the hydraulic rod 50 works to push the slider 8 to make reciprocating motion along the limit groove 7, the slider 8 drives the connecting piece 9 to make reciprocating motion, the connecting piece 9 drives the clamping piece 11 to move, the clamping piece 11 drives the driving plate 12 to move, and the driving plate 12 drives the movable plate 43 to move along the fixed plate 40. When one end of the movable plate 43 moves into the clamping groove 42, it is restricted by the limit plate 41. When the hydraulic rod drives the slider 8 to continue to move, since the upper end of the driving plate 12 is the force application point, the driving plate 12 drives the movable plate 43 to rotate with the limited end as the rotation axis 16. At the same time, the driving plate 12 drives the clamping piece 11 to move upward along the limit groove 10, and the movable plate 43 flips 90 degrees.

[0051] The above-mentioned monitoring equipment, controller, and components that need to be controlled, such as switches and hydraulic rods, are all connected to the controller.

[0052] The specific usage is as follows:

[0053] The hydraulic rod 50 works to push the slider 8 to move along the limit groove 7, the slider 8 drives the connecting piece 9 to move, the connecting piece 9 drives the clamping piece 11 to move, the clamping piece 11 drives the driving plate 12 to move, the driving plate 12 drives the movable plate 43 to move along the fixed plate 40, the movable plate 43 drives the grouting box 13 to move into the protective frame 2, and the protective frame 2 protects the outer wall of the grouting box 13.

[0054] First, adjust the inclination angle of the inclined plate 17 to simulate the inclination angle of the steeply inclined goaf: the hydraulic rod 19 drives the push plate 18 to move, the push plate 18 drives the telescopic seat 20 to move, the telescopic seat 20 drives the lower end of the inclined plate 17 to move, the inclined plate 17 rotates with the rotating shaft 16 as the rotation center, and at the same time, the inclined plate 17 lifts the telescopic seat 20, and the height of the telescopic seat 20 increases. When the hydraulic rod 19 drives the push plate 18 to move in the opposite direction, the push plate 18 drives the telescopic seat 20 to move in the opposite direction, and the inclined plate 17 rotates with the rotating shaft 16 as the rotation center under the action of the telescopic seat 20 The center of gravity rotates in the opposite direction, and the height of the telescopic seat 20 is reduced. When the inclined plate 17 is tilted, the extrusion piece 27 is squeezed, the extrusion piece 27 squeezes the extrusion plate 26, and the extrusion plate 26 squeezes the elastic bag 25. When the inclined plate 17 is tilted to a suitable angle, the control valve in the air guide pipe 28 is opened, and the gas in the elastic bag 25 enters the ventilation cavity 23 through the air guide pipe 28, and the gas in the ventilation cavity 23 enters the fixed bag 24. The fixed bag 24 bulges and fits the inner wall of the grouting box 13 to fix the inclined plate 17, and the control valve in the air guide pipe 28 is closed.

[0055] The hydrodynamic environment inside the test cavity 51 is set to a specified range: if there is groundwater activity in the grouting simulation area, the hydrodynamic environment of the steeply inclined goaf area is a water-filled environment or a flowing water environment. At the same time, according to the engineering geology and hydrogeology report of the simulation area, the relevant data of the groundwater flow velocity and flow rate in the area are found, and according to the scale, the opening size of the water inlet and the water outlet is adjusted to adjust the flow velocity and flow rate to make it stable; if there is no groundwater in the grouting simulation area, the hydrodynamic environment of the steeply inclined goaf area is a waterless environment;

[0056] Close the water inlet pipe 29 and the water outlet pipe 30 to set it to a waterless environment; open the water inlet pipe 29, connect an external water source, close the water outlet pipe 30, and fill the water to 1 / 2 or more, which is set to a water-filled state; close the water outlet pipe 30, open the water inlet pipe 29, connect an external water source, fill the water to 1 / 2, and then open the water outlet pipe 30 to keep the water flowing, which is set to a flowing water environment. The function of the flow meter is to record the water flow velocity and adjust the water flow rate and flow velocity in time according to the selected goaf data.

[0057] After putting stones and slag into the test cavity 51, the top cover 46 is placed on the organic glass shell 45 to achieve sealing.

[0058] The inflator 31 sets the internal pressure environment of the grouting box 13 to a specified value. The pressure gauge 33 is used to observe the pressure in the box and adjust the pressure in the box in time. After reaching the appropriate pressure value, the inflator 31 stops working.

[0059] The pump 35 sucks the slurry into the transport pipe 2 37, and transports the slurry to the test chamber 51 in the grouting box 13 through the transport pipe 1 36. The fluidity and stability of the slurry in the test chamber 51 are observed through the organic glass shell 45 and the transparent protective frame 2. When the pressure gauge 33 reaches the set value, the grouting is stopped.

[0060] When waiting for the stone body to be formed and sampling of the stone body is needed, the transport tube 36 is removed from the top cover 46, and the hydraulic rod 50 works to push the slider 8 to move in the opposite direction along the limiting groove 7, and the slider 8 drives the connecting piece 9 to move in the opposite direction, and the connecting piece 9 drives the clamping piece 11 to move in the opposite direction, and the clamping piece 11 drives the driving plate 12 to move in the opposite direction, and the driving plate 12 drives the movable plate 43 to move in the opposite direction along the fixed plate 40. When one end of the movable plate 43 moves into the clamping groove 42, it is restricted by the limiting plate 41. As the hydraulic rod drives the slider 8 to continue to move, since the upper end of the driving plate 12 is the force application point, the driving plate 12 drives the movable plate 43 to rotate with the restricted end as the rotation axis 16, and at the same time, the driving plate 12 drives the clamping piece 11 to move up along the limiting groove 10, and the movable plate 43 drives the grouting box 13 to flip 90 degrees, and then the top cover 46 is opened to sample the stone body for strength test.

[0061] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural modes and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they shall all fall within the scope of protection of the present invention.

Claims

1. A steeply inclined goaf grouting simulation device, characterized in that: It includes an adjustment drive assembly for supporting and driving, a protection frame and a test assembly are installed on the upper wall of the adjustment drive assembly, the test assembly is movably connected in the protection frame, the adjustment drive assembly includes a drive assembly and an adjustment assembly, the drive assembly is provided with two groups, and the two groups of drive assemblies are respectively arranged on both sides of the adjustment assembly; The driving assembly comprises a mounting plate, the lower end of the mounting plate is connected to the side wall of the adjustment assembly, a limiting groove 1 is provided on the side wall of the upper end of the mounting plate, a slider is movably clamped in the limiting groove 1, a connecting piece is installed on the side wall of the slider, a limiting groove 2 is provided in the connecting piece, a clamping piece is movably installed in the limiting groove 2, one end of the clamping piece extends out of the side wall of the connecting piece, a driving plate is movably installed on one end of the clamping piece, and the lower end of the driving plate is connected to the adjustment assembly; The test assembly includes a grouting box, a slurry conveying device and an environmental simulation device, the lower end of the grouting box is installed on the upper wall of the adjustment assembly, the environmental simulation device is arranged in the grouting box, and the output end of the slurry conveying device is connected to the upper end of the grouting box; The environmental simulation device comprises a rotating shaft, an inclined plate and a pushing plate, wherein the pushing plate is movably connected to the inner bottom wall of the grouting box, a hydraulic rod 2 is installed on the inner side wall of the grouting box, and the movable end of the hydraulic rod 2 is connected to the side wall of the pushing plate, the rotating shaft is arranged on the side wall of the grouting box, the inclined plate is arranged in the grouting box, and the center position of the inclined plate is movably connected to the rotating shaft, a telescopic seat is installed on the upper wall of the pushing plate, and the lower end of the inclined plate is movably connected to the telescopic seat; A flexible member 1 is installed between the lower ends of the inclined plates, a flexible member 2 is installed between the side walls of the inclined plates, the flexible member 1 is arranged on the upper wall of the push plate, the flexible member 2 is arranged on the inner wall of the grouting box, and a test cavity is set between the flexible member 1, the flexible member 2 and the inclined plates. A ventilation cavity is provided in the two side walls of the inclined plate close to the inner wall of the grouting box, and a fixed bag is also provided on the side wall of the inclined plate. The ventilation cavity is connected with the fixed bag through communication. An elastic bag is installed on the inner wall of the grouting box, and the elastic bag is a cavity structure with one end open. The elastic bags are respectively arranged at the upper end and the lower end of the grouting box. An extrusion plate is installed at the opening of the elastic bag, and an extrusion piece is installed between the extrusion plate and the inclined plate. An air duct is installed on the elastic bag, and the other end of the air duct is connected with the ventilation cavity through communication. The elastic bag, the extrusion plate and the grouting box are sealed. The air duct connects the ventilation cavity and the elastic bag, and a control valve is arranged in the air duct.

2. The steeply inclined goaf grouting simulation device according to claim 1 is characterized in that: The environmental simulation device also includes a water inlet pipe and a water outlet pipe. The water inlet pipe is arranged at the upper end of one side wall of the grouting box and is connected with the test cavity. The water outlet pipe is arranged at the lower end of the other side wall of the grouting box and is connected with the test cavity. A flow meter is installed on the water outlet pipe, and switches are provided on the water inlet pipe and the water outlet pipe.

3. The steeply inclined goaf grouting simulation device according to claim 2 is characterized in that: The environmental simulation device also includes an inflator, an air inlet pipe and a pressure gauge. The air inlet pipe is connected to the side wall of the grouting box, the inflator is connected to the air inlet pipe, and the pressure gauge is arranged on the upper wall of the grouting box.

4. The steeply inclined goaf grouting simulation device according to claim 3 is characterized in that: The slurry conveying device includes a barrel, a pump is installed on the upper wall of the barrel, a transport pipe 1 is installed at the output end of the pump, a transport pipe 2 is installed at the suction end of the pump, the other end of the transport pipe 1 passes through the grouting box and is connected to the test cavity, and the other end of the transport pipe 2 is connected to the barrel.

5. The steeply inclined goaf grouting simulation device according to claim 4 is characterized in that: The adjustment assembly includes a base plate, a support member is installed on the upper wall of the base plate, a fixing plate is installed on the upper wall of the support member, the lower end of the fixing plate is connected to the side wall of the support member, a limiting plate is installed on the end of the fixing plate away from the protective frame, a card slot is provided in the limiting plate, a movable plate is movably installed on the upper wall of the fixing plate, the lower end of the driving plate is connected to the end of the movable plate close to the protective frame, a roller for easy driving is installed on the side wall of the movable plate, the roller is movably arranged on the upper wall of the fixing plate, and the lower end of the grouting box is installed on the movable plate.

6. The steeply inclined goaf grouting simulation device according to claim 5, characterized in that: The grouting box adopts an organic glass shell, a top cover is provided at the upper end of the grouting box, a steel support is provided on the side wall, the inclined plate, the protective frame and the flexible part 2 are all made of transparent materials; the pressure gauge is arranged on the top cover, and a slurry fluidity monitor is also installed on the top cover, and a slurry stability monitor is installed on the inclined plate; a support plate is installed on the bottom plate, and the support plate is provided with two groups, and the two groups of support plates are respectively arranged on both sides of the bottom plate, and the support plate is arranged at one end of the mounting plate, and a hydraulic rod 1 is installed on the upper end of the support plate, and the movable end of the hydraulic rod 1 is connected to the slider.

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