CN113654817A - Multifunctional three-dimensional similar material simulation test system - Google Patents
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- 238000004088 simulation Methods 0.000 title claims abstract description 39
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Abstract
The invention discloses a multifunctional three-dimensional similar material simulation test system which comprises a three-dimensional box body, wherein a distributed energy storage device is arranged in the three-dimensional box body, a pressure relief valve is arranged on one side of the distributed energy storage device, a check valve is arranged on the other side of the distributed energy storage device, a pressurizing device is connected to the outer side of the check valve, an electrode is arranged in the three-dimensional box body, a base station and a host are arranged on the outer side of the three-dimensional box body, the electrode is sequentially and electrically connected with the outer base station and the host, a pressure sensor and a position sensor are arranged in the three-dimensional box body, and a collecting card and a computer are arranged on the outer side of the three-dimensional box body. By arranging the distributed energy storage devices, the problem that the traditional model cannot load axial pressure and confining pressure can be solved, and the purpose of applying different pressures in different areas can be achieved. By arranging the distributed energy storage devices to simulate the coal bed, the problems of coal bed mining, multi-coal-bed mining, layered mining, filling mining and the like under the condition of internal airtight of the three-dimensional model can be solved.
Description
Technical Field
The invention relates to the field of coal mines, in particular to a multifunctional three-dimensional similar material simulation test system.
Background
The material simulation is to make a geomechanical model of indoor engineering by using similar materials according to the properties and the structure of coal and rock on site and according to similar criteria and similar theories, wherein the size requirement of the model is in a certain proportion to the actual mining condition, and other physical quantities are in corresponding proportions so as to ensure that the reflecting rule of the model is similar to that of a prototype. Stress and displacement conditions of each point of the model are monitored in real time in the process of simulating coal seam mining, development rules of fractures in the model are obtained, then rock mass damage and motion rules in the actual coal seam mining process under the same conditions are reversely deduced or calculated according to a similar criterion and a similar theory, and then the conclusion obtained through simulation can be applied to field mining activities and researches to further verify research results.
The traditional coal mine engineering geological material simulation model mainly adopts an engineering geomechanics model frame, because the geological conditions of coal mines in China are complex, more water guide structures such as faults and collapse columns are arranged in a working face, the rock mass damage of a coal mining top and bottom plate is the comprehensive effect of water pressure of a water-bearing layer of the coal mining top and bottom plate, the self weight of a rock mass of a top and bottom plate overlying rocks and the surrounding ground stress, and the influence of the structures such as the collapse columns and the faults on the excavation of the working face is generally treated by adopting grouting reinforcement and other modes. The traditional engineering geomechanical model equipment can only simulate plane strain simulation under the condition of replacing load by roof overlying rocks, and cannot solve the problems of deformation and damage of a coal seam roof and floor rock stratum, layered mining, filling mining, grouting treatment and the like under the condition of mining with pressure on the floor; meanwhile, the problems of simulation of a water-resisting layer, bottom plate water pressure, confining pressure, fluid-solid coupling and mining of the coal bed inside the three-dimensional model cannot be solved, a plane strain model is mostly adopted for the simulation test related to coal bed mining at present, and the problems can be solved by the simulation test of the three-dimensional material.
In order to solve the problem of coal mine engineering geological material simulation under conventional and complex conditions, a multifunctional three-dimensional similar material simulation test system is specially designed, and supports are provided for researching the problems of deformation and damage of a top and bottom plate rock mass, safe recovery under complex conditions, simulation of a grouting reinforcement treatment process, simulation of water guide structure activation such as a collapse column and a fault, coal seam layered mining, filling mining, fluid-solid coupling and the like in the coal mine recovery process in future.
Therefore, a multifunctional three-dimensional simulation test system for solving the above problems becomes a technical problem to be solved urgently in the whole society.
Disclosure of Invention
The invention mainly solves the problem of coal mine engineering geological material simulation under conventional and complex conditions, and aims to research the problems of deformation and damage of a top and bottom plate rock mass, safe recovery under complex conditions, simulation of a grouting reinforcement treatment process, simulation of water guide structure activation such as a collapse column and a fault, coal seam layered mining, filling mining, fluid-solid coupling and the like in the process of simulating coal mine recovery in the future.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a multi-functional three-dimensional similar material analogue test system, includes the three-dimensional box, the inside of three-dimensional box is provided with distributed energy memory, one side of distributed energy memory is provided with the pressure release valve, distributed energy memory's opposite side is provided with the check valve, the outside of check valve is connected and is provided with pressure device, the inside of three-dimensional box is provided with the electrode, the outside of three-dimensional box is provided with basic station and host computer, electric connection in proper order between electrode and outside basic station, the host computer, the inside of three-dimensional box is provided with pressure sensor and displacement sensor, the outside of three-dimensional box is provided with acquisition card and computer, electric connection between pressure sensor, displacement sensor and acquisition card, the computer, be provided with recorder of three-dimensional box.
Further, the three-dimensional box body is composed of a front side plate, a rear side plate, a left side plate, a right side plate, an upper side plate and a lower side plate, wherein the front side plate, the rear side plate, the left side plate, the right side plate, the upper side plate and the lower side plate are formed by cutting and welding high-strength steel plates, a double-layer plastic film is arranged inside the three-dimensional box body, and an iron plate is welded on the outer side of the three-dimensional box body.
Furthermore, a plurality of round holes are formed in the upper side plate and used for monitoring placement of cables, water pipes and grouting pipelines, and a model support base is arranged at the bottom of the lower side plate.
Further, the withstand voltage capsule preparation of distributed high strength is adopted to distributed energy memory to form, and the pressure of the withstand voltage capsule of distributed high strength is through manual pressure testing pump of beating, leaves on the withstand voltage capsule of distributed high strength and is equipped with water inlet and delivery port, one side of pressure testing pump distributed energy memory is the pressure release end, and one side is the pressure boost end, the pressure release valve is connected at the pressure release end, the check valve is connected at the pressure boost end.
Further, the outside of three-dimensional box is connected and is provided with the slip casting system, the slip casting system comprises thick liquid, grouting equipment, slip casting pipeline and slip casting simulation drilling, the thick liquid includes cement thick liquid and chemical grout, grouting equipment adopts hand-held type grouting pump.
Further, the grouting equipment adopts an M16 type multifunctional tungsten steel cement grouting machine.
Furthermore, a pressure applying system is arranged on the outer side of the distributed energy storage device and is divided into an axial pressure subsystem and a confining pressure subsystem, wherein the axial pressure applying system is divided into a top plate overlying strata equivalent load pressure applying system and a bottom plate aquifer water pressure equivalent load pressure applying system.
Further, the recording device is composed of a camera, and the camera is arranged on the front side of the three-dimensional box body.
Furthermore, the front side plate is made of transparent materials.
Further, all be provided with on preceding curb plate, posterior lateral plate, left side board, right side board, the curb plate and the lower plate and reserve the screw hole.
Further, the pressure sensor is a flexible film pressure sensor.
Compared with the prior art, the method has the advantages that: by arranging the distributed energy storage devices, the problem that the traditional model cannot load axial pressure and confining pressure can be solved, and the purpose of applying different pressures in different areas can be achieved. By arranging the distributed energy storage devices to simulate the coal bed, the problems of coal bed mining, multi-coal-bed mining, layered mining, filling mining and the like under the condition of internal airtight of the three-dimensional model can be solved. By arranging the grouting pipeline and simulating drilling, the problem that the traditional model cannot simulate grouting, water injection and other treatment processes can be solved. Through setting up multiple monitoring electrode to can solve accurate dynamic monitoring problem of full life cycle processes such as model slip casting, water injection and recovery. The method has strong advantages of solving the problems existing in the traditional means, realizing the simulation of various scenes and dynamically and accurately monitoring the data in the model, has high practicability and is suitable for wide popularization.
Drawings
FIG. 1 is a schematic structural diagram of a multifunctional three-dimensional simulation test system for similar materials according to the present invention;
FIG. 2 is a schematic view of the internal structure of a three-dimensional box;
FIG. 3 is a side view of a three-dimensional box;
FIG. 4 is a side view of the three-dimensional box;
FIG. 5 is a rear view of the three-dimensional box;
FIG. 6 is a schematic view of the bottom structure of the three-dimensional box;
FIG. 7 is a schematic diagram of a distributed energy storage apparatus;
fig. 8 is a schematic diagram of a pressure application system.
As shown in the figure: 1. the device comprises a three-dimensional box body, 2, a distributed energy storage device, 3, a pressure relief valve, 4, a check valve, 5, a pressurizing device, 6, an electrode, 7, an outer base station, 8, a host, 9, a pressure sensor, 10, a displacement sensor, 11, a collecting card, 12, a computer, 13, a front side plate, 14, a rear side plate, 15, a left side plate, 16, a right side plate, 17, an upper side plate, 18, a lower side plate, 19, an iron plate, 20, a round hole, 21, a model support base, 22, a camera, 23 and reserved screw holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present invention will be described in detail with reference to the accompanying drawings.
The invention provides a multifunctional three-dimensional similar material simulation test system in specific implementation, which comprises a three-dimensional box body 1, wherein a distributed energy storage device 2 is arranged in the three-dimensional box body 1, a pressure relief valve 3 is arranged on one side of the distributed energy storage device 2, a check valve 4 is arranged on the other side of the distributed energy storage device 2, a pressurizing device 5 is connected and arranged on the outer side of the check valve 4, an electrode 6 is arranged in the three-dimensional box body 1, a base station 7 and a host machine 8 are arranged on the outer side of the three-dimensional box body 1, the electrode 6 is electrically connected with the outer base station 7 and the host machine 8 in sequence, a pressure sensor 9 and a displacement sensor 10 are arranged in the three-dimensional box body 1, an acquisition card 11 and a computer 12 are arranged on the outer side of the three-dimensional box body 1, the pressure sensor 9 and the displacement sensor 10 are electrically connected with the acquisition card 11 and the computer 12, the three-dimensional box body 1 is provided with a recording device.
The three-dimensional box body 1 is composed of a front side plate 13, a rear side plate 14, a left side plate 15, a right side plate 16, an upper side plate 17 and a lower side plate 18, wherein the front side plate 13, the rear side plate 14, the left side plate 15, the right side plate 16, the upper side plate 17 and the lower side plate 18 are formed by cutting and welding high-strength steel plates, a double-layer plastic film is arranged inside the three-dimensional box body 1, and an iron plate 19 is welded on the outer side of the three-dimensional box body 1. A plurality of round holes 20 are formed in the upper side plate 17, the round holes 20 are used for monitoring placement of cables, water pipes and grouting pipelines, and a model support base 21 is arranged at the bottom of the lower side plate 18. The pressure testing pump is pressed through manual to the pressure of the withstand voltage capsule of distributed high strength, leaves on the withstand voltage capsule of distributed high strength and is equipped with water inlet and delivery port, one side of the withstand voltage testing pump distributed energy memory 2 of pressing is the pressure release end, and one side is the pressure boost end, pressure release valve 3 is connected at the pressure release end, check valve 4 is connected at the pressure boost end. The outside of three-dimensional box 1 is connected and is provided with the slip casting system, the slip casting system comprises thick liquid, slip casting equipment, slip casting pipeline and slip casting simulation drilling, the thick liquid includes cement thick liquid and chemical grout, the slip casting equipment adopts hand-held type grouting pump. The grouting equipment adopts an M16 type multifunctional tungsten steel cement grouting machine. And a pressure applying system is arranged on the outer side of the distributed energy storage device 2 and is divided into an axial pressure subsystem and a confining pressure subsystem, wherein the axial pressure applying system is divided into a top plate overlying strata equivalent load pressure applying system and a bottom plate aquifer water pressure equivalent load pressure applying system. The recording device is composed of a camera 22, and the camera 22 is arranged on the front side of the three-dimensional box body 1. The front side plate 13 is made of transparent material. And reserved screw holes 23 are formed in the front side plate 13, the rear side plate 14, the left side plate 15, the right side plate 16, the upper side plate 17 and the lower side plate 18.
The specific embodiment of the invention is as follows: when the three-dimensional box body is used, the whole system consists of four parts, namely a three-dimensional box body 1, a pressure applying system, a grouting system and a monitoring system, wherein the three-dimensional box body 1 is formed by cutting and welding high-strength steel plates; the plane support system is characterized in that distributed baffles are arranged inside the model from bottom to top at a position 30cm away from the front on the basis of the three-dimensional box type system, the top boundary of each baffle is adjustable, each baffle is formed by cutting and welding high-strength channel steel, and the whole support can be disassembled and disassembled.
The pressure application system is divided into an axial pressure subsystem and a confining pressure subsystem, wherein the axial pressure system is divided into a top plate overlying rock equivalent load pressure application system and a bottom plate aquifer water pressure equivalent load pressure application system, the pressure source is a manual pressure test pump, and the distributed energy storage device 2 is a distributed high-strength pressure-resistant capsule; (1) energy storage device (high strength pressure-resistant capsule) size: and respectively arranging high-strength pressure-resistant capsules according to the size of the plane model, the size of the simulated coal seam, the top and bottom (simulated axial pressure) of the model or the periphery (simulated confining pressure), reserving a water inlet and a water outlet in the high-strength pressure-resistant capsules, and determining the pressure-resistant strength according to a model design scheme.
Firstly, the water filling process of the distributed high-strength pressure-resistant capsules can simulate the coal seam in a pressurized and three-dimensional model;
secondly, the water discharging process of the distributed high-strength pressure-resistant capsules can simulate pressure relief, coal seam excavation or coal seam excavation in layered mining (a plurality of layers of distributed high-strength pressure-resistant capsules are distributed according to the number of layered mining times);
the water discharging-filling process of the distributed high-strength pressure-resistant capsules can simulate the coal seam filling mining process;
and fourthly, according to different simulation conditions, different distributed high-strength pressure-resistant capsules can be arranged at the bottom, such as: a collapse column is arranged in the model, and distributed high-strength pressure-resistant capsules are arranged at the bottom of the column body and the bottom of the complete stratum respectively to simulate uneven conditions; distributed high-strength pressure-resistant capsules are arranged at the bottoms of the two plates of the fault respectively, so that different water pressures can be simulated.
(2) The pressure source of the pressure-resistant capsule with distributed high strength is a manual pressure-increasing pressure-testing pump, a high-precision pressure gauge can be installed, the pressure-increasing numerical value can be manually operated, a check valve is installed in each pressure pipeline joint, and the pressure stability of the energy storage device is kept.
The grouting system comprises a grouting system, a grouting device, a grouting pipeline and a grouting simulation drill hole, wherein the grouting system is composed of grout, the grouting device, the grouting pipeline and the grouting simulation drill hole, the grout can be selected from cement grout or chemical grout according to the field condition, the grouting device is a handheld grouting pump, the grouting pipeline is a high-pressure rubber pipe, and the grouting simulation drill hole is replaced by a PVC plastic pipe prefabricated quincuncial hole; a three-dimensional model system is adopted when the fluid-solid coupling process is simulated, and a water injection system is the same as a grouting system.
The model monitoring system comprises a model front surface photogrammetry method, a camera 22 is arranged on the front side of the three-dimensional box body 1, surface photography is carried out through the camera 22, and internal displacement monitoring of the model, stress monitoring of a flexible film pressure sensor at the internal position of the model and parallel electrical resistivity monitoring of a network in the model are carried out.
(1) Model front surface photogrammetry monitoring: the front surface of the model is a transparent organic glass panel, and a high-definition camera is used for recording the whole process.
(2) Model internal displacement monitoring points: and a pull rod type displacement sensor is adopted to monitor deformation of the overlying strata and the bottom plate in the coal seam excavation and filling processes, and the displacement change of the overlying strata in the mining process is continuously monitored. The range of the sensor is 0-300 mm, the precision is +/-0.05%, the zero position is arranged in the center of the sensor, and when the pull rod is completely retracted and then bounced, the displacement is displayed to be increased.
(3) And (3) stress sensor arrangement: 4 stress monitoring lines are arranged in the model in a horizontal and vertical mode, 64 monitoring points are used in total, a flexible film pressure sensor is adopted, and the stress change of each point in the model is monitored by matching with a multichannel film pressure sensor acquisition card signal conditioning module.
(4) And (3) electrode layout: the network parallel electrical method monitoring electrodes are arranged in the model, two measuring lines are transversely arranged in the coal seam mining influence range, two measuring lines are longitudinally arranged, one measuring line is diagonally arranged, and 32 paths of electrodes are arranged on each measuring line.
According to the invention, related components such as the pressure sensor 9, the displacement sensor 10, the electrode 6 and the like are arranged through the structure, after the arrangement is finished, the electrode is electrically connected with the host machine 8 through the outer base station 7, the pressure sensor 9 and the displacement sensor 10 are electrically connected with the acquisition card 11 and the computer 12, the energy storage devices 2 are selectively distributed according to needs and are arranged according to needs, the camera 22 is arranged on the front side of the three-dimensional box body 1, the top of the three-dimensional box body 1 is provided with a round hole, grouting is carried out through a grouting system, and after the process video recording is finished, the camera 22 is used for carrying out process video recording. By arranging the distributed energy storage devices, the problem that the traditional model cannot load axial pressure and confining pressure can be solved, and the purpose of applying different pressures in different areas can be achieved. By arranging the distributed energy storage devices to simulate the coal bed, the problems of coal bed mining, multi-coal-bed mining, layered mining and the like under the condition of internal airtight of the three-dimensional model can be solved. By arranging the grouting pipeline and simulating drilling, the problem that the traditional model cannot simulate grouting, water injection and other treatment processes can be solved. Through setting up multiple monitoring electrode to can solve accurate dynamic monitoring problem of full life cycle processes such as model slip casting, water injection and recovery.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A multifunctional three-dimensional similar material simulation test system is characterized in that: the energy-saving and energy-saving type three-dimensional box comprises a three-dimensional box body (1), wherein a distributed energy storage device (2) is arranged inside the three-dimensional box body (1), a pressure release valve (3) is arranged on one side of the distributed energy storage device (2), a check valve (4) is arranged on the other side of the distributed energy storage device (2), a pressurizing device (5) is connected and arranged outside the check valve (4), an electrode (6) is arranged inside the three-dimensional box body (1), a base station (7) and a host (8) are arranged outside the three-dimensional box body (1), the electrode (6) is electrically connected with the base station (7) and the host (8) in sequence, a pressure sensor (9) and a displacement sensor (10) are arranged inside the three-dimensional box body (1), an acquisition card (11) and a computer (12) are arranged outside the three-dimensional box body (1), and the pressure sensor (9) is arranged, The displacement sensor (10) is electrically connected with the acquisition card (11) and the computer (12), and the three-dimensional box body (1) is provided with a recording device.
2. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 1, wherein: the three-dimensional box body (1) comprises a front side plate (13), a rear side plate (14), a left side plate (15), a right side plate (16), an upper side plate (17) and a lower side plate (18), wherein the front side plate (13), the rear side plate (14), the left side plate (15), the right side plate (16), the upper side plate (17) and the lower side plate (18) are formed by cutting and welding high-strength steel plates, a double-layer plastic film is arranged inside the three-dimensional box body (1), and an iron plate (19) is welded on the outer side of the three-dimensional box body (1).
3. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 2, wherein: a plurality of round holes (20) are formed in the upper side plate (17), the round holes (20) are used for monitoring placement of cables, water pipes and grouting pipelines, and a model support base (21) is arranged at the bottom of the lower side plate (18).
4. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 1, wherein: the distributed energy storage device (2) is made of distributed high-strength pressure-resistant capsules, the pressure of the distributed high-strength pressure-resistant capsules is pressed through a manual pressure testing pump, a water inlet and a water outlet are reserved on the distributed high-strength pressure-resistant capsules, one side of the distributed energy storage device (2) of the pressure testing pump is a pressure releasing end, one side of the distributed energy storage device is a pressure boosting end, the pressure releasing valve (3) is connected to the pressure releasing end, and the check valve (4) is connected to the pressure boosting end.
5. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 1, wherein: the outside of three-dimensional box (1) is connected and is provided with the slip casting system, the slip casting system comprises thick liquid, slip casting equipment, slip casting pipeline and slip casting simulation drilling, the thick liquid includes cement thick liquid and chemical grout, the slip casting equipment adopts hand-held type grouting pump.
6. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 5, wherein: the grouting equipment adopts an M16 type multifunctional tungsten steel cement grouting machine.
7. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 1, wherein: and a pressure applying system is arranged on the outer side of the distributed energy storage device (2), and is divided into an axial pressure subsystem and a confining pressure subsystem, wherein the axial pressure applying system is divided into a top plate overlying strata equivalent load pressure applying system and a bottom plate aquifer water pressure equivalent load pressure applying system.
8. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 1, wherein: the recording device is composed of a camera (22), and the camera (22) is arranged on the front side of the three-dimensional box body (1).
9. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 2, wherein: the front side plate (13) is made of transparent materials.
10. The multifunctional three-dimensional simulation test system for similar materials as claimed in claim 2, wherein: and reserved screw holes (23) are formed in the front side plate (13), the rear side plate (14), the left side plate (15), the right side plate (16), the upper side plate (17) and the lower side plate (18).
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| CN202110820545.7A CN113654817A (en) | 2021-07-20 | 2021-07-20 | Multifunctional three-dimensional similar material simulation test system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568595A (en) * | 2015-01-09 | 2015-04-29 | 山东科技大学 | Coal bed mining floor grouting infiltration-reducing simulation testing system |
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