CN113818841B - Triaxial loaded gas drainage simulation platform - Google Patents
Triaxial loaded gas drainage simulation platform Download PDFInfo
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- CN113818841B CN113818841B CN202111110001.8A CN202111110001A CN113818841B CN 113818841 B CN113818841 B CN 113818841B CN 202111110001 A CN202111110001 A CN 202111110001A CN 113818841 B CN113818841 B CN 113818841B
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- 238000004088 simulation Methods 0.000 title claims abstract description 120
- 238000000605 extraction Methods 0.000 claims abstract description 81
- 239000003245 coal Substances 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000000084 colloidal system Substances 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 5
- 238000010146 3D printing Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a triaxial loaded gas extraction simulation platform, which relates to the technical field of coal mine gas extraction, and comprises a fixed base, an inner installation frame and a simulation 3D printed coal bed sample, wherein a shell is fixedly arranged on the surface of the upper end of the fixed base, an upper cover is fixedly arranged on the upper end of the shell, installation holes are formed in four corners of the surface of the upper end of the fixed base, drainage grooves are formed in two sides of the shell on the surface of the upper end of the fixed base, the inner installation frame comprises a take-up shaft, a line fixing strip and an installation groove, a plurality of line fixing grooves are formed in the line fixing strip at equal distances, a clamping device is movably arranged in the installation groove, the 3D printed coal bed sample is a 3D printed model capable of simulating drilling and re-excavating under different supporting conditions of a roadway simultaneously, and the triaxial loaded gas extraction simulation platform is simple in operation, comprehensive in function, accurate in acquired experimental data, convenient to disassemble and install and convenient to later maintain.
Description
Technical Field
The invention relates to the technical field of coal mine gas extraction, in particular to a triaxial loaded gas extraction simulation platform.
Background
Coal mine underground gas explosion accidents often occur, and social circles improve the attention degree of the coal mine underground gas extraction technology and simultaneously put forward higher requirements on the coal mine underground gas extraction technology, so that the underground gas extraction rate of the coal mine is improved by a more effective and innovative method, the underground gas content and the underground gas emission content of the coal mine are reduced as far as possible, and the underground gas extraction method plays a crucial role in realizing stable and safe coal mine underground operation.
In the coal seam mining process, roadway surrounding rock stress is redistributed after a roadway is excavated, support after the roadway is excavated also influences the roadway surrounding rock stress distribution, a gas extraction drill hole is generally constructed on the roadway wall after the support, the borehole surrounding rock stress is redistributed after the drill hole is constructed, and the gas extraction drill hole surrounding rock is equivalent to secondary excavation under the support condition after the roadway is excavated. The gas extraction simulation platform has an active promotion effect on the safety production of a coal mine, can provide theoretical and practical basis for the research of the axial gas migration rule of an extraction drill hole, the reasonable hole sealing depth, the hole sealing method and the drill hole structure, the research of the extraction efficiency improvement, and provides guarantee for gas extraction. However, the existing gas extraction simulation platform is still lack of a gas extraction simulation platform which is simple in structure, novel and reasonable in design, convenient to use and operate and high in practicability. The existing gas extraction simulation platform is complex in structure, cannot effectively simulate the three-dimensional stress state borne by a coal seam due to the dead weight of an overlying rock stratum, cannot simulate the actual coal seam structure and the secondary excavation process of a drill hole, cannot simulate bedding drill hole extraction, cross-layer drill hole extraction, gas extraction of drill holes with coal seams at different dip angles, and cannot simulate gas extraction under different temperature conditions, so that a triaxial loaded gas extraction simulation platform needs to be provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention discloses a triaxial loaded gas extraction simulation platform, which aims to solve the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a be applicable to triaxial loaded gas drainage simulation platform, includes:
the device comprises a fixed base, wherein four corners of the surface of the lower end of the fixed base are respectively provided with a roller, a placing table is fixedly arranged on the outer side of the middle end of the surface of the upper end of the fixed base, a control box is fixedly arranged on the surface of the upper end of the placing table, a simulation box is movably arranged above one end of the fixed base, arc-shaped gear pieces are fixedly arranged at two ends of the surface of the lower end of the simulation box, a connecting shaft is fixedly arranged at the middle ends of the arc-shaped gear pieces, and limiting connecting pieces are fixedly arranged at the upper ends of two sides of the simulation box;
actuating mechanism, actuating mechanism includes crank, support frame, guard box, the guard box inside activity is provided with the transfer line, transfer line one end is passed the guard box lateral wall and is crank tip fixed connection.
Preferably, a threaded head is fixedly arranged at one end, far away from the crank, of the transmission rod, a rotating shaft is movably arranged between the upper ends of the two support frames, a transmission gear is sleeved on the outer side of the middle end of the rotating shaft, and the threaded head is meshed with the transmission gear.
Preferably, fixed limit gear that is provided with between crank and the screw thread head on the transfer line, protection box upper end surface activity is provided with the knob, the fixed threaded rod that is provided with in knob lower extreme surface center, the pot head is equipped with the screwed pipe under the threaded rod, screwed pipe surface draw runner, threaded rod and screwed pipe threaded connection, the screwed pipe passes through draw runner and protection box inner wall sliding connection, the fixed limit rack that is provided with of screwed pipe lower extreme surface.
Preferably, the driving mechanism further comprises an adjusting rod, a connecting block and a push-pull rod, one end of the adjusting rod is fixedly connected with the rotating shaft, one end of the adjusting rod, far away from the rotating shaft, is movably connected with the connecting block, two ends of the push-pull rod are fixedly connected with the connecting block, and one end of the push-pull rod, far away from the adjusting rod, is movably connected with the limiting connecting piece through the connecting block.
Preferably, the supporting plates are fixedly arranged on two sides of one end, far away from the supporting frame, of the upper end surface of the fixing base, the strip-shaped tooth grooves are formed in the inner side of the supporting plate of the upper end surface of the fixing base, the strip-shaped tooth grooves are meshed with the arc-shaped gear pieces, and the two ends of the connecting shaft penetrate through the arc-shaped gear pieces and are movably connected with the supporting plate.
Preferably, a press is fixedly arranged at the center of the surface of the upper end of the simulation box, an inner box body is fixedly arranged in the simulation box, a plunger is arranged at the output end of the press, the lower end of the plunger penetrates through the inner box body and is fixedly provided with an upper pressure plate, and a simulated coal bed sample is fixedly arranged below the upper pressure plate.
Preferably, the simulation 3D prints the 3D printing model that the coal seam sample was excavated once more for drilling under the different supporting condition in simulation tunnel simultaneously, and the lower extreme is fixed to be provided with the holding down plate, the simulation coal seam sample outside is provided with the colloid cover, form liquid pressurization cavity between the interior box inboard and the colloid cover outside, the fixed heating element that is provided with in interior box outside.
Preferably, a heat preservation layer is fixedly arranged between the inner wall of the simulation box and the heating element, a plurality of drill holes extending into the simulation coal seam sample are drilled at the bottom of the inner box body, extraction pipes are fixedly arranged in the drill holes, a plurality of through holes are formed in the outer surface of each extraction pipe at equal intervals, a hole sealing piece is arranged between the outer side of each extraction pipe and each drill hole, an extraction pump is fixedly arranged at the middle end of the surface of the upper end of the fixed base, an air suction port of each extraction pump is connected with a gas pipeline, and the gas pipeline of each extraction pump is fixedly connected with the corresponding extraction pipe through a connecting piece.
Preferably, the fixed gas holding vessel that is provided with in simulation case upper end surface press one side, be connected with gas runner pipe between gas holding vessel and the simulation coal seam sample, liquid pressurization cavity upper end simulation case upper wall internal fixation is provided with L type feed liquor pipe, L type feed liquor pipe end portion is fixed and is provided with the connector, take out the fixed liquid force (forcing) pump that is provided with in pump one side, the liquid force (forcing) pump passes through liquid pipeline and connector fixed connection, the simulation case can be dismantled, simulation bottom of the case board both sides are provided with locking Assembly.
Preferably, the locking assembly comprises a mounting groove, a fixing column and a clamping head, a spring is sleeved on the outer surface of the fixing column, a limiting block is fixedly arranged on the surface of the lower end inside the mounting groove, one end of the spring is fixedly connected with the clamping head, the clamping head is connected with the limiting block in a sliding mode, and a clamping groove corresponding to the clamping head is formed in the lower end of the side plate of the simulation box.
The invention discloses a triaxial loaded gas extraction simulation platform and a using method thereof, and the triaxial loaded gas extraction simulation platform has the following beneficial effects:
this be applicable to triaxial loaded gas drainage simulation platform, it rotates with the thread head effectively to drive the transfer line through rotating the crank, and then rotates through the thread head and effectively drives drive gear and axis of rotation and rotate certain angle, rotates through the axis of rotation and effectively drives the regulation pole and rotate, and then realizes that the connecting block effectively stimulates the push-and-pull rod and drives the certain angle of simulation case skew, and the simulation is actually coal seam structure, and the simulation is taken out and is taken out in the drilling of bedding, is taken out and the coal seam is in different inclination drilling gas drainage.
This be applicable to triaxial loaded gas drainage simulation platform effectively drives the threaded rod through rotatory knob and rotates, and then realizes that the screwed pipe moves down along the threaded rod, and then realizes that the screwed pipe moves down the in-process and effectively drives spacing rack and move down, and then spacing rack effectively with spacing gear chucking each other, guarantees the stability of axis of rotation, and then guarantees the stability behind the simulation case skew angle.
This be applicable to triaxial loaded gas drainage simulation platform, through stirring the part and effectively drive the dop under the limiting displacement of stopper, inside the horizontal slip shrink gets into the mounting groove, meanwhile, the dop effectively compresses the spring, and then the dop breaks away from the draw-in groove, makes things convenient for the maintenance in later stage.
Drawings
FIG. 1 is a front view of the main structure of the present invention;
FIG. 2 is a schematic view of the driving mechanism of the present invention;
FIG. 3 is a side cross-sectional view of the simulation box of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 3 at B in accordance with the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 3 at C according to the present invention;
fig. 7 is a partial top view of the drive mechanism of the present invention.
In the figure: 1. a fixed base; 101. a strip-shaped tooth socket; 2. a roller; 3. a support plate; 4. a simulation box; 401. an arcuate gear member; 402. a connecting shaft; 403. a limiting connecting piece; 404. a card slot; 5. a drive mechanism; 501. a crank; 502. a support frame; 503. a protective box; 504. a transmission rod; 505. a screw head; 506. a transmission gear; 507. a rotating shaft; 508. a limit gear; 509. a knob; 510. a threaded rod; 511. a threaded pipe; 512. a slide bar; 513. a limit rack; 514. adjusting a rod; 515. connecting blocks; 516. a push-pull rod; 6. a liquid pressurizing pump; 7. an extraction pump; 701. a gas conduit; 8. a placing table; 9. a control box; 10. a press machine; 1001. a plunger; 1002. an upper pressure plate; 11. a locking assembly; 1101. mounting grooves; 1102. fixing the column; 1103. a spring; 1104. a toggle piece; 1105. clamping a head; 1106. a limiting block; 12. a heat-insulating layer; 13. a heating element; 14. a colloid sleeve; 15. a liquid pressurization cavity; 1501. an L-shaped liquid inlet pipe; 1502. a connector; 16. pressing the plate downwards; 17. simulating a 3D printing coal seam sample; 1701. drilling; 18. extracting pipes; 1801. a connecting member; 19. a hole sealing member; 20. a gas storage tank; 21. an inner box body.
Detailed Description
The embodiment of the invention discloses a triaxial loaded gas extraction simulation platform and a using method thereof, as shown in figures 1-7, the triaxial loaded gas extraction simulation platform comprises the following steps:
the device comprises a fixed base 1, wherein four corners of the surface of the lower end of the fixed base 1 are respectively provided with a roller 2, the outer side of the middle end of the surface of the upper end of the fixed base 1 is fixedly provided with a placing table 8, the surface of the upper end of the placing table 8 is fixedly provided with a control box 9, a simulation box 4 is movably arranged above one end of the fixed base 1, two ends of the surface of the lower end of the simulation box 4 are fixedly provided with arc-shaped gear pieces 401, the middle end of each arc-shaped gear piece 401 is fixedly provided with a connecting shaft 402, and the upper ends of two sides of the simulation box 4 are fixedly provided with limit connecting pieces 403;
the driving mechanism 5 and the driving mechanism 5 comprise a crank 501, a supporting frame 502 and a protective box 503, a transmission rod 504 is movably arranged in the protective box 503, and one end of the transmission rod 504 penetrates through the side wall of the protective box 503 to be fixedly connected with the end part of the crank 501.
According to the attached fig. 1, 2 and 7, one end of the transmission rod 504 far away from the crank 501 is fixedly provided with a threaded head 505, a rotating shaft 507 is movably arranged between the upper ends of the two support frames 502, the outer side of the middle end of the rotating shaft 507 is sleeved with a transmission gear 506, the threaded head 505 is meshed with the transmission gear 506, a limit gear 508 is fixedly arranged between the crank 501 and the threaded head 505 on the transmission rod 504, the upper end surface of the protective box 503 is movably provided with a knob 509, the center of the lower end surface of the knob 509 is fixedly provided with a threaded rod 510, the lower end of the threaded rod 510 is sleeved with a threaded pipe 511, a sliding strip 512 is arranged on the outer surface of the threaded pipe 511, the threaded rod 510 is in threaded connection with the threaded pipe 511, the threaded pipe 511 is in sliding connection with the inner wall of the protective box 503 through the sliding strip 512, the lower end surface of the threaded pipe 511 is fixedly provided with a limit rack 513, the driving mechanism 5 further comprises an adjusting rod 514, a connecting block 515 and a push-pull rod 516, one end of the adjusting rod 514 is fixedly connected with the rotating shaft 507, one end of the adjusting rod 514, which is far away from the rotating shaft 507, is movably connected with the connecting block 515, two ends of the push-pull rod 516 are fixedly connected with the connecting block 515, one end of the push-pull rod 516, which is far away from the adjusting rod 514, is movably connected with the limiting connecting piece 403 through the connecting block 515, the driving rod 504 and the threaded head 505 are effectively driven to rotate through rotating the crank 501, the transmission gear 506 and the rotating shaft 507 are effectively driven to rotate by a certain angle through rotating the threaded head 505, the adjusting rod 514 is effectively driven to rotate through rotating the rotating shaft 507, the connecting block 515 effectively pulls the push-pull rod 516 to drive the simulation box 4 to deviate by a certain angle, the actual coal seam structure is simulated, extraction of bedding drill holes 1701, extraction of penetrated drill holes 1701 and gas extraction of coal seams with different inclination angles are simulated, the threaded rod 510 is effectively driven to rotate through rotating the knob 509, and the threaded pipe 511 moves downwards along the threaded rod 510, and then realize that screwed pipe 511 moves down the in-process and effectively drive spacing rack 513 and move down, and then spacing rack 513 effectively clamps each other with limit gear 508, guarantees the stability of axis of rotation 507, and then guarantees the stability behind the 4 skew angles of simulation case.
According to shown in fig. 1 and 3, the fixed backup pad 3 that is provided with in one end both sides that support frame 502 was kept away from to unable adjustment base 1 upper end surface, bar tooth's socket 101 has been seted up to unable adjustment base 1 upper end surface backup pad 3 inboards, bar tooth's socket 101 and curved gear spare 401 intermeshing, curved gear spare 401 and backup pad 3 swing joint are passed at connecting axle 402 both ends, effectively provide pulling force or thrust for simulation case 4 through push-and-pull rod 516, when simulation case 4 received pulling force or thrust, curved gear spare 401 effectively rocked on bar tooth's socket 101, guarantee simulation case 4's structural stability.
According to the attached drawing 3, a press machine 10 is fixedly arranged at the center of the upper end surface of a simulation box 4, an inner box 21 is fixedly arranged inside the simulation box 4, a plunger 1001 is arranged at the output end of the press machine 10, an upper pressing plate 1002 is fixedly arranged at the lower end of the plunger 1001 and penetrates through the inner box 21, a simulation 3D printing coal seam sample 17 is fixedly arranged below the upper pressing plate 1002, a lower pressing plate 16 is fixedly arranged at the lower end of the simulation 3D printing coal seam sample 17, a colloid sleeve 14 is arranged outside the simulation 3D printing coal seam sample 17, a liquid pressurizing cavity 15 is formed between the inner side of the inner box 21 and the outer side of the colloid sleeve 14, a heating element 13 is fixedly arranged outside the inner box 21, the pressure machine 10 acts on the upper pressing plate 1002, the load value applied to the coal seam by the earth surface is effectively simulated under the action of the lower pressing plate 16, gas extraction under different temperature conditions is effectively simulated through the heating element 13, theoretical and practical basis is provided for improving the extraction efficiency research, and guarantee is provided for the gas extraction.
According to the attached drawings 3, 5 and 6, a heat insulation layer 12 is fixedly arranged between the inner wall of a simulation box 4 and a heating element 13, a plurality of drill holes 1701 extending into a simulation 3D printing coal seam sample 17 are drilled in the bottom of an inner box body 21, extraction pipes 18 are fixedly arranged in the drill holes 1701, a plurality of through holes are formed in the outer surfaces of the extraction pipes 18 at equal intervals, hole sealing pieces 19 are arranged between the outer sides of the extraction pipes 18 and the drill holes 1701, extraction pumps 7 are fixedly arranged at the middle ends of the upper end surfaces of a fixed base 1, air suction ports of the extraction pumps 7 are connected with gas pipelines 701, the gas pipelines 701 of the extraction pumps 7 are fixedly connected with the extraction pipes 18 through connecting pieces 1801, a gas storage tank 20 is fixedly arranged on one side of a press 10 on the upper end surface of the simulation box 4, a gas circulation pipe is connected between the gas storage tank 20 and the simulation 3D printing coal seam sample 17, an L-shaped liquid inlet pipe 1501 is fixedly arranged in the upper end of the simulation box 4 on the upper end of a liquid pressurization cavity 15, a liquid pressurization cavity 1502 is fixedly connected with a liquid inlet pipe 1501, liquid pressurization components 1502, the simulation box 4 and a simulation coal seam sample 4 can be effectively pressurized and can be pumped into the simulation box through a liquid pressurization working tank 17, and a simulation box 11, the simulation coal seam sample can be effectively pressurized by a liquid pressurization working tank 17, and a liquid pressurization working tank 17, the simulation box can be effectively pressurized by a liquid pressurization working tank 17, and a liquid pressurization working tank 17 is effectively pressurized working tank 17 is arranged in the simulation box, and a liquid pressurization working tank 17.
According to fig. 4, locking assembly 11 includes mounting groove 1101, fixed column 1102, dial piece 1104 and dop 1105, fixed column 1102 external surface cover is equipped with spring 1103, the inside lower extreme fixed surface of mounting groove 1101 is provided with stopper 1106, spring 1103 one end and dop 1105 fixed connection, dop 1105 and stopper 1106 sliding connection, simulation case 4 curb plate lower extreme is offered the draw-in groove 404 corresponding with dop 1105, dial piece 1104 through stirring and effectively drive dop 1105 under the limiting displacement of stopper 1106, horizontal slip shrink gets into inside mounting groove 1101, meanwhile, dop 1105 effectively compresses spring 1103, and then dop 1105 breaks away from draw-in groove 404, make things convenient for the maintenance in later stage.
Example one
As shown in fig. 1-7, the triaxial loaded gas extraction simulation platform comprises a fixed base 1 and a driving mechanism 5, wherein four corners of the surface of the lower end of the fixed base 1 are respectively provided with a roller 2, the outer side of the middle end of the surface of the upper end of the fixed base 1 is fixedly provided with a placing table 8, the surface of the upper end of the placing table 8 is fixedly provided with a control box 9, a simulation box 4 is movably arranged above one end of the fixed base 1, two ends of the surface of the lower end of the simulation box 4 are fixedly provided with an arc gear 401, the middle end of the arc gear 401 is fixedly provided with a connecting shaft 402, the upper ends of two sides of the simulation box 4 are fixedly provided with a limiting connecting piece 403, the driving mechanism 5 comprises a crank 501, a support frame 502 and a protection box 503, a transmission rod 504 is movably arranged inside the protection box 503, and one end of the transmission rod 504 penetrates through the side wall of the protection box 503 and is fixedly connected with the end portion of the crank 501.
A threaded head 505 is fixedly arranged at one end of the transmission rod 504 far away from the crank 501, a rotating shaft 507 is movably arranged between the upper ends of the two support frames 502, a transmission gear 506 is sleeved outside the middle end of the rotating shaft 507, the threaded head 505 is meshed with the transmission gear 506, a limit gear 508 is fixedly arranged between the crank 501 and the threaded head 505 on the transmission rod 504, a knob 509 is movably arranged on the upper end surface of the protection box 503, a threaded rod 510 is fixedly arranged in the center of the lower end surface of the knob 509, a threaded pipe 511 is sleeved at the lower end of the threaded rod 510, a sliding strip 512 is arranged on the outer surface of the threaded pipe 511, the threaded rod 510 is in threaded connection with the threaded pipe 511, the threaded pipe 511 is in sliding connection with the inner wall of the protection box 503 through the sliding strip 512, a limit rack 513 is fixedly arranged on the lower end surface of the threaded pipe 511, the driving mechanism 5 further comprises an adjusting rod 514, a connecting block 515 and a push-pull rod 516, one end of an adjusting rod 514 is fixedly connected with the rotating shaft 507, one end of the adjusting rod 514, which is far away from the rotating shaft 507, is movably connected with a connecting block 515, two ends of a push-pull rod 516 are fixedly connected with the connecting block 515, one end of the push-pull rod 516, which is far away from the adjusting rod 514, is movably connected with a limiting connecting piece 403 through the connecting block 515, the driving rod 504 and the threaded head 505 are effectively driven to rotate by rotating the crank 501, the driving gear 506 and the rotating shaft 507 are effectively driven to rotate by rotating the threaded head 505 at a certain angle, the adjusting rod 514 is effectively driven to rotate by rotating the rotating shaft 507, the connecting block 515 effectively pulls the push-pull rod 516 to drive the simulation box 4 to deviate at a certain angle, an actual coal seam structure is simulated, and extraction along a seam borehole 1701, extraction of a cross-seam borehole 1701 and gas extraction of boreholes 1701 with different inclination angles of the coal seam are simulated.
Example two
As shown in fig. 1-7, a triaxial loaded gas extraction simulation platform comprises a fixed base 1 and a driving mechanism 5, four corners of the lower end surface of the fixed base 1 are respectively provided with a roller 2, a placing table 8 is fixedly arranged on the outer side of the middle end of the upper end surface of the fixed base 1, a control box 9 is fixedly arranged on the upper end surface of the placing table 8, a simulation box 4 is movably arranged above one end of the fixed base 1, two ends of the lower end surface of the simulation box 4 are fixedly provided with an arc gear 401, a connecting shaft 402 is fixedly arranged at the middle end of the arc gear 401, limiting connecting pieces 403 are fixedly arranged at the upper ends of two sides of the simulation box 4, the driving mechanism 5 comprises a crank 501, a support frame 502 and a protection box 503, a driving rod 504 is movably arranged inside the protection box 503, and one end of the driving rod 504 penetrates through the side wall of the protection box 503 and is fixedly connected with the end portion of the crank 501.
Under the condition of the first embodiment, a press machine 10 is fixedly arranged at the center of the upper end surface of a simulation box 4, an inner box 21 is fixedly arranged inside the simulation box 4, a plunger 1001 is arranged at the output end of the press machine 10, an upper pressing plate 1002 is fixedly arranged at the lower end of the plunger 1001 through the inner box 21, a simulation 3D printing coal seam sample 17 is fixedly arranged below the upper pressing plate 1002, a lower pressing plate 16 is fixedly arranged at the lower end of the simulation 3D printing coal seam sample 17, a colloid sleeve 14 is arranged outside the simulation 3D printing coal seam sample 17, a liquid pressurizing cavity 15 is formed between the inner side of the inner box 21 and the outer side of the colloid sleeve 14, a heating element 13 is fixedly arranged outside the inner box 21, the pressure machine 10 acts on the upper pressing plate 1002, the load value applied to the coal seam from the earth surface is effectively simulated under the action of the lower pressing plate 16, gas extraction under different temperature conditions is effectively simulated through the heating element 13, theoretical and realistic bases are provided for research on the extraction efficiency, and guarantee is provided for the gas extraction.
EXAMPLE III
As shown in fig. 1-7, a triaxial loaded gas extraction simulation platform comprises a fixed base 1 and a driving mechanism 5, four corners of the lower end surface of the fixed base 1 are respectively provided with a roller 2, a placing table 8 is fixedly arranged on the outer side of the middle end of the upper end surface of the fixed base 1, a control box 9 is fixedly arranged on the upper end surface of the placing table 8, a simulation box 4 is movably arranged above one end of the fixed base 1, two ends of the lower end surface of the simulation box 4 are fixedly provided with an arc gear 401, a connecting shaft 402 is fixedly arranged at the middle end of the arc gear 401, limiting connecting pieces 403 are fixedly arranged at the upper ends of two sides of the simulation box 4, the driving mechanism 5 comprises a crank 501, a support frame 502 and a protection box 503, a driving rod 504 is movably arranged inside the protection box 503, and one end of the driving rod 504 penetrates through the side wall of the protection box 503 and is fixedly connected with the end portion of the crank 501.
Under the conditions of the second embodiment, a heat insulating layer 12 is fixedly arranged between the inner wall of the simulation box 4 and the heating element 13, a plurality of drill holes 1701 extending into the simulation 3D printing coal seam sample 17 are drilled at the bottom of the inner box body 21, an extraction pipe 18 is fixedly arranged in the drill holes 1701, a plurality of through holes are equidistantly formed in the outer surface of the extraction pipe 18, a hole sealing piece 19 is arranged between the outer side of the extraction pipe 18 and the drill holes 1701, an extraction pump 7 is fixedly arranged at the middle end of the upper end surface of the fixed base 1, a gas pipeline 701 is connected to a gas suction port of the extraction pump 7, the gas pipeline 701 of the extraction pump 7 is fixedly connected with the extraction pipe 18 through a connecting piece 1801, a gas storage tank 20 is fixedly arranged on one side of a press 10 on the upper end surface of the simulation box 4, a gas circulation pipe is connected between the gas storage tank 20 and the simulation 3D printing coal seam sample 17, an L-shaped liquid inlet pipe 1501 is fixedly arranged in the upper wall of the simulation box 4 on the upper end of the liquid pressurizing cavity 15, a liquid pressure pump 6 is fixedly arranged on one side of an extraction pump 7, the liquid pressure pump 6 is fixedly connected with a connector 1502 through a liquid pipeline, a simulation box 4 can be detached, locking assemblies 11 are arranged on two sides of a bottom plate of the simulation box 4, liquid is pumped into a liquid pressure cavity 15 through the operation of the liquid pressure pump 6, the periphery of a simulation 3D printing coal seam sample 17 is effectively pressurized through a colloid sleeve 14, gas is effectively introduced into the simulation 3D printing coal seam sample 17 through the operation of a gas storage tank 20, so that the gas extraction under different gas concentrations is effectively simulated, each locking assembly 11 comprises a mounting groove 1101, a fixed column 1102, a stirring member 1104 and a clamping head 1105, a spring 1103 is sleeved on the outer surface of the fixed column 1102, a limiting block 1106 is fixedly arranged on the surface of the lower end inside the mounting groove 1101, and one end of the spring 1103 is fixedly connected with the clamping head 1105, dop 1105 and stopper 1106 sliding connection, simulation case 4 curb plate lower extreme has seted up the draw-in groove 404 corresponding with dop 1105, stirs 1104 through stirring and effectively drives dop 1105 under the limiting displacement of stopper 1106, inside the horizontal slip shrink gets into mounting groove 1101, meanwhile, dop 1105 effectively compresses spring 1103, and then dop 1105 breaks away from draw-in groove 404, makes things convenient for the maintenance in later stage.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a be applicable to triaxial loaded gas drainage simulation platform which characterized in that includes:
the device comprises a fixed base (1), wherein four corners of the surface of the lower end of the fixed base (1) are respectively provided with a roller (2), the outer side of the middle end of the surface of the upper end of the fixed base (1) is fixedly provided with a placing table (8), the surface of the upper end of the placing table (8) is fixedly provided with a control box (9), a simulation box (4) is movably arranged above one end of the fixed base (1), two ends of the surface of the lower end of the simulation box (4) are fixedly provided with arc-shaped gear pieces (401), the middle end of each arc-shaped gear piece (401) is fixedly provided with a connecting shaft (402), and the upper ends of two sides of the simulation box (4) are fixedly provided with limit connecting pieces (403);
the driving mechanism (5) comprises a crank (501), a supporting frame (502) and a protection box (503), a transmission rod (504) is movably arranged in the protection box (503), and one end of the transmission rod (504) penetrates through the side wall of the protection box (503) to be fixedly connected with the end part of the crank (501);
a threaded head (505) is fixedly arranged at one end of the transmission rod (504) far away from the crank handle (501), a rotating shaft (507) is movably arranged between the upper ends of the two support frames (502), a transmission gear (506) is sleeved outside the middle end of the rotating shaft (507), and the threaded head (505) is meshed with the transmission gear (506);
a limit gear (508) is fixedly arranged between a crank handle (501) and a threaded head (505) on the transmission rod (504), a knob (509) is movably arranged on the upper end surface of the protective box (503), a threaded rod (510) is fixedly arranged in the center of the lower end surface of the knob (509), a threaded pipe (511) is sleeved at the lower end of the threaded rod (510), a sliding strip (512) is arranged on the outer surface of the threaded pipe (511), the threaded rod (510) is in threaded connection with the threaded pipe (511), the threaded pipe (511) is in sliding connection with the inner wall of the protective box (503) through the sliding strip (512), and a limit rack (513) is fixedly arranged on the lower end surface of the threaded pipe (511);
the driving mechanism (5) further comprises an adjusting rod (514), a connecting block (515) and a push-pull rod (516), one end of the adjusting rod (514) is fixedly connected with the rotating shaft (507), one end of the adjusting rod (514), which is far away from the rotating shaft (507), is movably connected with the connecting block (515), two ends of the push-pull rod (516) are fixedly connected with the connecting block (515), and one end of the push-pull rod (516), which is far away from the adjusting rod (514), is movably connected with the limiting connecting piece (403) through the connecting block (515);
the supporting frame (502) is kept away from to unable adjustment base (1) upper end surface one end both sides are fixed and are provided with backup pad (3), bar tooth's socket (101) have been seted up to unable adjustment base (1) upper end surface backup pad (3) inboard, bar tooth's socket (101) and arc gear spare (401) intermeshing, arc gear spare (401) and backup pad (3) swing joint are passed at connecting axle (402) both ends.
2. The three-axis loaded gas extraction simulation platform according to claim 1, characterized in that: the simulation case (4) upper end surface center is fixed and is provided with press (10), the inside fixed interior box (21) that is provided with of simulation case (4), press (10) output is provided with plunger (1001), plunger (1001) lower extreme passes interior box (21) and is fixed and is provided with top board (1002), fixed simulation coal seam sample (17) that is provided with in top board (1002) below.
3. The three-axis loaded gas extraction simulation platform according to claim 2, characterized in that: the coal bed simulation test device is characterized in that a lower pressing plate (16) is fixedly arranged at the lower end of the simulated coal bed sample (17), a colloid sleeve (14) is arranged on the outer side of the simulated coal bed sample (17), a liquid pressurization cavity (15) is formed between the inner side of the inner box body (21) and the outer side of the colloid sleeve (14), and a heating element (13) is fixedly arranged on the outer side of the inner box body (21).
4. The three-axis loaded gas extraction simulation platform according to claim 3, wherein the three-axis loaded gas extraction simulation platform comprises: the simulation box is characterized in that a heat preservation layer (12) is fixedly arranged between the inner wall of the simulation box (4) and the heating element (13), a plurality of drill holes (1701) extending to the inside of a simulation coal bed sample (17) are drilled in the bottom of the inner box body (21), extraction pipes (18) are fixedly arranged in the drill holes (1701), a plurality of through holes are formed in the outer surfaces of the extraction pipes (18) at equal intervals, hole sealing pieces (19) are arranged between the outer sides of the extraction pipes (18) and the drill holes (1701), an extraction pump (7) is fixedly arranged at the middle end of the upper end surface of the fixed base (1), an air suction port of the extraction pump (7) is connected with a gas pipeline (701), and the gas pipeline (701) of the extraction pump (7) is fixedly connected with the extraction pipes (18) through connecting pieces (1801).
5. The three-axis loaded gas extraction simulation platform according to claim 4, characterized in that: simulation case (4) upper end surface press (10) one side is fixed and is provided with gas holding vessel (20), be connected with gas circulation pipe between gas holding vessel (20) and simulation coal bed sample (17), liquid pressurization cavity (15) upper end simulation case (4) upper wall internal fixation is provided with L type feed liquor pipe (1501), L type feed liquor pipe (1501) end fixing is provided with connector (1502), take out and adopt pump (7) one side fixed liquid force (forcing) pump (6) that is provided with, liquid force (forcing) pump (6) are through liquid pipeline and connector (1502) fixed connection, simulation case (4) can be dismantled, simulation case (4) bottom plate both sides are provided with locking Assembly (11).
6. The three-axis loaded gas extraction simulation platform according to claim 5, wherein the three-axis loaded gas extraction simulation platform comprises: the locking assembly (11) comprises a mounting groove (1101), a fixing column (1102), a stirring piece (1104) and a clamping head (1105), a spring (1103) is sleeved on the outer surface of the fixing column (1102), a limiting block (1106) is fixedly arranged on the surface of the lower end inside the mounting groove (1101), one end of the spring (1103) is fixedly connected with the clamping head (1105), the clamping head (1105) is slidably connected with the limiting block (1106), and a clamping groove (404) corresponding to the clamping head (1105) is formed in the lower end of a side plate of the simulation box (4).
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