CN114280275A - Coal seam module fine excavation system in three-dimensional simulation test - Google Patents
Coal seam module fine excavation system in three-dimensional simulation test Download PDFInfo
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- CN114280275A CN114280275A CN202111561012.8A CN202111561012A CN114280275A CN 114280275 A CN114280275 A CN 114280275A CN 202111561012 A CN202111561012 A CN 202111561012A CN 114280275 A CN114280275 A CN 114280275A
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- 239000003245 coal Substances 0.000 title claims abstract description 138
- 238000009412 basement excavation Methods 0.000 title claims abstract description 109
- 238000004088 simulation Methods 0.000 title claims abstract description 81
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 13
- 239000004484 Briquette Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 17
- 238000005065 mining Methods 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 7
- 239000003818 cinder Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The invention discloses a coal bed module fine excavation system in a three-dimensional simulation test, which comprises: the plurality of simulated coal blocks form a simulated coal bed; each electric support module is arranged at the bottom of one simulated coal block, and the electric support modules are lifted and used for driving the simulated coal blocks to move; the output end of the control module is connected with the controlled end of the electric support module, the control module determines the height of each simulated coal block according to a preset excavation surface, determines the height of each electric support module according to the height of each simulated coal block, and generates a height control instruction according to the height of each electric support module; the control module sends the height control instruction of each electric support module to the corresponding electric support module so as to control the electric support modules to ascend and descend to the corresponding height. According to the scheme, the control module is used for accurately controlling the electric support module, so that the stability of the system and the accuracy of a simulation result are improved.
Description
Technical Field
The invention relates to the field of design of coal mining simulation devices, in particular to a coal seam module fine excavation system in a three-dimensional simulation test.
Background
In the existing coal mining process, the coal seam excavation can destroy the original mechanical balance state of a rock mass, so that the overlying strata deforms and moves, the disturbance spreads to the earth surface along with the advancement of mining, the earth surface is sunk, the existing land resources are damaged, and direct or indirect damage is brought to surrounding building structures. In order to master the mechanical behavior in the excavation process, the prior art provides a simulation test theory based on similar materials, wherein a model is built in a laboratory by using materials such as sand stone, gelatin, gypsum and the like, the complex geological conditions are reduced and disturbance similar to that in the engineering is applied to the complex geological conditions, the influence of coal seam excavation on overlying strata and the ground surface is accurately observed by relying on a more accurate monitoring means and more observation angles in the laboratory than the site, and the internal law between the exploitation disturbance and the ground surface subsidence is obtained, so that the practical problem is solved. Current simulation coal seam excavation device directly divides into a plurality of simulation pieces with the coal seam, and the height through adjusting each simulation piece simulates the uneven coal seam of height under the different situation, and the scene of this coal cinder quilt of high simulation through reducing the simulation piece is dug, later observes the change of the simulation soil isotructure that the coal seam top set up to reach the influence to earth's surface soil and other each aspect after the coal seam excavation.
However, in the prior art, when the height of each simulation block is adjusted manually by using a tool, the generated disturbance affects each layer, and the accuracy of the test data is low.
Disclosure of Invention
The invention provides a coal seam module fine excavation system in a three-dimensional simulation test, and aims to solve the technical problem of how to realize fine mining during coal seam excavation and improve the recovery rate of coal resources.
In order to solve the technical problems, the invention provides the following technical scheme:
the embodiment of the invention provides a coal bed module fine excavation system in a three-dimensional simulation test, which comprises the following steps:
the simulation coal seam comprises a plurality of simulation coal blocks, a plurality of coal blocks and a plurality of coal seam sensors, wherein the simulation coal blocks form a simulation coal seam;
each electric support module is arranged at the bottom of one simulated coal block, and the electric support modules are lifted and used for driving the simulated coal blocks to move;
the output end of the control module is connected with the controlled end of the electric support module, the control module determines the height of each simulated coal block according to a preset excavation surface, determines the height of each electric support module according to the height of each simulated coal block, and generates a height control instruction according to the height of each electric support module; the control module sends the height control instruction of each electric support module to the corresponding electric support module so as to control the electric support modules to ascend and descend to the corresponding height.
The coal bed module fine excavation system in the three-dimensional simulation test provided by the embodiment of the invention comprises the following steps:
the simulated coal block is provided with a square cross section, and the side length of the square cross section is 10-20 cm; the simulated coal briquette comprises at least 10 rows, and the number of the simulated coal briquettes in each row comprises at least 15.
The coal bed module fine excavation system in the three-dimensional simulation test provided by the embodiment of the invention comprises the following steps:
the side length of the square cross section is 15 cm; the simulated coal briquette comprises 14 rows, and the number of the simulated coal briquettes in each row comprises 20.
The coal bed module fine excavation system in the three-dimensional simulation test provided by the embodiment of the invention comprises the following steps:
each electric support module is internally provided with a pressure acquisition unit, and the pressure acquisition unit is used for detecting the pressure value born by the electric support module and sending the pressure value to the control module.
The coal bed module fine excavation system in the three-dimensional simulation test provided by the embodiment of the invention comprises the following steps:
each of the motorized support modules comprises:
the controlled end of the stepping motor is connected with the output end of the control module, and the driving quantity of the driving output end of the stepping motor is controlled by a height control instruction output by the control module;
the electric telescopic cylinder is connected with the driving output end of the stepping motor;
the device comprises an excavation head, wherein one end of the excavation head is connected with the telescopic end of the electric telescopic cylinder, and the other end of the excavation head is fixedly connected with the simulated coal blocks.
The coal bed module fine excavation system in the three-dimensional simulation test provided by the embodiment of the invention comprises the following steps:
the pressure acquisition unit is arranged in the excavation head, and the pressure acquisition unit is used for acquiring the pressure value applied to the excavation head by the simulated coal block.
The coal bed module fine excavation system in the three-dimensional simulation test provided by the embodiment of the invention comprises the following steps:
the excavation head comprises an excavation module outer cover, an excavation module main body and a sensor top plate;
the excavation module main body is of a cuboid structure, and the bottom of the excavation module main body is connected with the telescopic end of the electric telescopic cylinder; the pressure acquisition unit set up in the top of cuboid structure, the sensor roof set up in the pressure acquisition unit top, excavation module dustcoat will excavation module main part the pressure acquisition unit with the sensor roof cladding is inside.
The coal seam module fine excavation system in the three-dimensional simulation test according to a part of embodiments of the present invention further includes:
the simulation coal briquette is characterized in that the transparent box body is internally provided with a plurality of simulation coal briquettes and a plurality of electric supporting modules.
The coal seam module fine excavation system in the three-dimensional simulation test according to a part of embodiments of the present invention further includes:
the simulated rock-soil layer is arranged on the upper portion of the simulated coal seam and comprises a plurality of rock-soil layers, and each rock-soil layer is set to be different in color.
The coal seam module fine excavation system in the three-dimensional simulation test according to a part of embodiments of the present invention further includes:
the simulation loose layer is arranged above the simulation rock-soil layer;
the camera is arranged above the simulation loose layer, and is used for collecting the surface change state of the simulation loose layer and sending the collected result to the control module in the process that the control module controls the electric supporting module to ascend to the corresponding height;
the control module is provided with a display screen, and the display screen is used for displaying the result acquired by the camera.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the coal bed module fine excavation system in the three-dimensional simulation test, the control module can be used for accurately controlling the electric support module, and continuous lifting change of a large number of simulated coal blocks is achieved, so that discretization simulation is performed on an excavation surface, unnecessary disturbance generated in a manual control process is avoided, and the stability of the system and the accuracy of a simulation result are improved.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic side structure diagram of a coal seam module refined excavation system in a three-dimensional simulation test according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a top surface structure of a simulated coal block in a coal seam module refined excavation system in the three-dimensional simulation test according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an electromotive support module according to an embodiment of the present invention;
FIG. 4 is a schematic structural component view of an electromotive supporting module according to an embodiment of the present invention;
fig. 5 is a schematic control flow diagram of the control module according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment provides a coal seam module fine excavation system in a three-dimensional simulation test, as shown in fig. 1 and 2, the coal seam module fine excavation system comprises a plurality of simulated coal blocks 101, a plurality of electric support modules 102 and a control module. Wherein:
the plurality of simulated coal blocks 101 form a simulated coal seam, each electric support module 102 is arranged at the bottom of one simulated coal block 101, and the electric support module 102 is lifted and lowered to drive the simulated coal blocks 101 to move; the output end of the control module is connected with the controlled end of the electric support module 102, the control module determines the height of each simulated coal block 101 according to a preset excavation surface, determines the height of each electric support module 102 according to the height of each simulated coal block 101, and generates a height control instruction according to the height of each electric support module 102; the control module sends the height control command of each electric support module 102 to the corresponding electric support module 102 to control the electric support module 102 to be lifted to the corresponding height.
As shown in fig. 1, a simulated surface layer 200 is disposed above the simulated coal seam, and the simulated surface layer 200 may be used for simulating surface soil, a loose layer between the surface soil and the simulated coal seam, and the like, and may be set according to actual situations. Wherein, the electric support module 102 is disposed on the support platform 300. The situation shown in fig. 1 is the situation where all the motorized support modules 102 are of the same height, and in actual implementation, each motorized support module 102 may be set up according to the coal mining face to be simulated.
The scheme provided by the embodiment can realize continuous change of lifting of a large number of simulated coal blocks 101 by accurately controlling the electric support module 102 through the control module, so that discretization simulation is carried out on the excavation surface, unnecessary disturbance generated in the manual control process is avoided, and the stability of the system and the accuracy of a simulation result are improved.
Preferably, the simulated coal block 101 has a square cross section, and the side length of the square cross section is 10-20 cm; the simulated coal block comprises at least 10 rows, and the number of the simulated coal blocks 101 in each row comprises at least 15. Further, the side length of the square cross section is 15 cm; the simulation module comprises 14 rows, and the number of the simulated coal blocks 101 in each row comprises 20. That is, the number of simulated coal blocks 101 includes 280, each module having a size of 15cm by 15 cm. Therefore, the height change of 280 or more simulated coal blocks 101 is adopted, and the excavation of a complex coal bed can be simulated, so that fine mining is achieved when the coal bed is excavated, and the recovery rate of coal resources is guaranteed to be improved. In combination with the schematic surface structure diagram of the simulated coal seam shown in fig. 2, it can be determined that the scheme of the invention can truly simulate the real excavation process by discretizing the continuously changed excavation surface shape through a large number of rows and columns of excavation simulated coal mines.
In some embodiments, as shown in fig. 3, each of the motorized support modules 102 comprises:
and a controlled end of the stepping motor 301 is connected with the output end of the control module, and the driving quantity of the driving output end of the stepping motor 301 is controlled by a height control instruction output by the control module.
And the electric telescopic cylinder 302 is connected with the driving output end of the stepping motor 301.
And an excavation head 303, wherein one end of the excavation head 303 is connected with the telescopic end of the electric telescopic cylinder 302, and the other end of the excavation head 303 is used for being fixedly connected with the simulated coal block 101.
In the initial stage, the height of each electrically powered support module 102 should correspond to the coal seam face of the coal mine being simulated, i.e., the profile of the initial simulated coal seam face is consistent with the actual profile of the coal seam face being simulated.
In this process, the control module can store the initial height of each motorized support module 102 and can assign a number to each motorized support module 102, such as numbering each motorized support module 102 in rows and columns. The height value of the motorized support module 102 may be recorded by setting a height value recording table of the motorized support module 102. If the excavation scheme has been formulated to the coal seam of colliery, then just can confirm predetermineeing the excavation face, to predetermineeing the actual position of excavation face, determine the position of corresponding simulation coal cinder in the excavation system in this embodiment, and then just can determine the position of corresponding electronic support module 102, the simulation of excavation process is in fact the process that reduces the height of electronic support module 102, electronic support module 102 reduces, then the simulation coal cinder 101 that electronic support module 102 is connected reduces thereupon, be equivalent to this simulation coal 101 corresponding coal seam position is dug. The process is controlled for 280 electric support modules 102, and the electric support modules 102 at different positions correspond to an actual height value, so that various excavation curves can be simulated by the 14 rows and 20 columns of simulated coal blocks.
Further, as shown in fig. 4, a pressure collecting unit 402 is configured in each of the electric support modules 102, and the pressure collecting unit 402 is configured to detect a pressure value borne by the electric support module 102 and send the pressure value to the control module. In the scheme, the pressure values of all parts in the excavation curve are measured by installing the measuring components on the electric support module 102, a group of discrete data is established, the control module can determine the influence of the excavated simulation coal block at any position on the pressure value born by the electric support module at the adjacent position according to the analysis of the discrete data, and the pressure value born by the electric support module is from the simulation coal block, so that the change of the pressure value born by the rest simulation coal blocks after the simulation coal block at any position is excavated can be simulated through the recording of the discrete data, and then the change of the pressure value born by the simulation surface layer 200 born by the top of the simulation coal block can be determined, namely whether the simulation surface layer 200 can generate landslide, collapse and the like can be predicted.
As shown in fig. 4, the pressure collecting unit 402 is disposed in the excavation head 303, and the pressure collecting unit 402 is configured to collect a pressure value applied by the simulated coal block 101 to the excavation head 303. The excavation head 303 comprises an excavation module housing 404, an excavation module body 401 and a sensor top plate 403; the excavation module main body 401 is of a cuboid structure, and the bottom of the excavation module main body 401 is connected with the telescopic end of the electric telescopic cylinder 302; the pressure acquisition unit 402 is arranged at the top of the cuboid structure, the sensor top plate 403 is arranged at the top of the pressure acquisition unit 402, and the excavation module outer cover 404 covers the excavation module body 401, the pressure acquisition unit 402 and the sensor top plate 403 inside the excavation module outer cover. Wherein, the bottom of excavation module main part 401 can be connected with electronic telescoping cylinder 302 through connecting bolt 405. The pressure value from the simulated coal can be better transmitted to the pressure acquisition unit 402 through the sensor top plate 403, and meanwhile, a certain protection effect can be achieved on the pressure acquisition unit 402.
In some aspects, the excavation system further includes a transparent box, and the plurality of simulated coal blocks and the plurality of electric support modules are disposed inside the transparent box. The staff can see through transparent box is surveyed excavation analogue process, is convenient for adjust the excavation process.
Further, the simulated surface layer 200 may include a simulated geotechnical layer disposed at an upper portion of the simulated coal seam, the simulated geotechnical layer including a plurality of geotechnical layers, each geotechnical layer being disposed in a different color. Different ground layering sets up to different colours, after the simulation coal cinder 101 was dug, the change condition that flows that can confirm each ground layering through observing the change condition of colour to can confirm the stability of each ground layering after the simulation coal cinder 101 was dug.
Preferably, in the excavation system as described above, the simulated surface layer 200 further includes a simulated loose layer disposed above the simulated rock-soil layer; the camera is arranged above the simulation loose layer, and is used for collecting the surface change state of the simulation loose layer and sending the collected result to the control module in the process that the control module controls the electric supporting module to ascend to the corresponding height; the control module is provided with a display screen, and the display screen is used for displaying the result acquired by the camera. The surface of the simulated unconsolidated formation is actually equivalent to the ground surface, whether cracks are generated on the surface of the simulated unconsolidated formation or not, the time when the cracks are generated and the like are observed through a camera, and the influence on the ground surface stability in the process of excavating the simulated coal blocks can be determined.
It can be understood that the material, thickness, etc. selected by the simulated surface layer 200 during design can be consistent according to the actual coal mining situation to be simulated, so that the safety and stability in the real excavation process can be deduced through the simulated excavation condition of the system.
In the above scheme, a control flow of the control module is shown in fig. 5, and includes:
the method comprises the following steps: and starting an excavation system control subsystem in platform software installed in the control module.
Step two: establishing an excavation surface by a newly-built/called/introduced modification mode; the excavation face is determined by an operator according to an actual excavation scheme.
Step three: and determining the height of each electric support module according to the excavation surface for adjustment.
Step four: when the heights of all the electric support modules are in place, the simulated coal blocks corresponding to each electric support module are in place.
Step five: and detecting the stability of each position after excavation.
Step six: and adjusting the excavation scheme according to the stability detection result, and setting the height adjusting mode of the electric support module in a newly-built/called/introduced modifying mode.
And after the excavation scheme is adjusted, the excavation simulation process can be executed again until the stability of each position detected in the fifth step meets the requirement. By adopting the scheme provided by the invention, before the actual excavation of the coal mine, the simulation excavation system is firstly used for testing, and the stability and the safety of the excavation scheme are simulated in advance, so that the steady and safe execution of the actual mining process is ensured.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a coal seam module excavation system that becomes more meticulous among three-dimensional simulation test which characterized in that includes:
the simulation coal seam comprises a plurality of simulation coal blocks, a plurality of coal blocks and a plurality of coal seam sensors, wherein the simulation coal blocks form a simulation coal seam;
each electric support module is arranged at the bottom of one simulated coal block, and the electric support modules are lifted and used for driving the simulated coal blocks to move;
the output end of the control module is connected with the controlled end of the electric support module, the control module determines the height of each simulated coal block according to a preset excavation surface, determines the height of each electric support module according to the height of each simulated coal block, and generates a height control instruction according to the height of each electric support module; the control module sends the height control instruction of each electric support module to the corresponding electric support module so as to control the electric support modules to ascend and descend to the corresponding height.
2. The coal seam module fine excavation system in the three-dimensional simulation test of claim 1, wherein:
the simulated coal block is provided with a square cross section, and the side length of the square cross section is 10-20 cm; the simulated coal briquette comprises at least 10 rows, and the number of the simulated coal briquettes in each row comprises at least 15.
3. The coal seam module fine excavation system in the three-dimensional simulation test of claim 2, wherein:
the side length of the square cross section is 15 cm; the simulated coal briquette comprises 14 rows, and the number of the simulated coal briquettes in each row comprises 20.
4. The coal seam module fine excavation system in the three-dimensional simulation test according to any one of claims 1 to 3, wherein:
each electric support module is internally provided with a pressure acquisition unit, and the pressure acquisition unit is used for detecting the pressure value born by the electric support module and sending the pressure value to the control module.
5. The system for the refined excavation of the coal seam modules in the three-dimensional simulation test according to claim 4, wherein each of the electric support modules comprises:
the controlled end of the stepping motor is connected with the output end of the control module, and the driving quantity of the driving output end of the stepping motor is controlled by a height control instruction output by the control module;
the electric telescopic cylinder is connected with the driving output end of the stepping motor;
the device comprises an excavation head, wherein one end of the excavation head is connected with the telescopic end of the electric telescopic cylinder, and the other end of the excavation head is fixedly connected with the simulated coal blocks.
6. The coal seam module fine excavation system in the three-dimensional simulation test of claim 5, wherein:
the pressure acquisition unit is arranged in the excavation head, and the pressure acquisition unit is used for acquiring the pressure value applied to the excavation head by the simulated coal block.
7. The coal seam module fine excavation system in the three-dimensional simulation test of claim 6, wherein:
the excavation head comprises an excavation module outer cover, an excavation module main body and a sensor top plate;
the excavation module main body is of a cuboid structure, and the bottom of the excavation module main body is connected with the telescopic end of the electric telescopic cylinder; the pressure acquisition unit set up in the top of cuboid structure, the sensor roof set up in the pressure acquisition unit top, excavation module dustcoat will excavation module main part the pressure acquisition unit with the sensor roof cladding is inside.
8. The system for the refined excavation of the coal seam modules in the three-dimensional simulation test according to any one of claims 1 to 3, further comprising:
the simulation coal briquette is characterized in that the transparent box body is internally provided with a plurality of simulation coal briquettes and a plurality of electric supporting modules.
9. The system for the refined excavation of the coal seam module in the three-dimensional simulation test according to claim 8, further comprising:
the simulated rock-soil layer is arranged on the upper portion of the simulated coal seam and comprises a plurality of rock-soil layers, and each rock-soil layer is set to be different in color.
10. The system for the refined excavation of the coal seam module in the three-dimensional simulation test according to claim 9, further comprising:
the simulation loose layer is arranged above the simulation rock-soil layer;
the camera is arranged above the simulation loose layer, and is used for collecting the surface change state of the simulation loose layer and sending the collected result to the control module in the process that the control module controls the electric supporting module to ascend to the corresponding height;
the control module is provided with a display screen, and the display screen is used for displaying the result acquired by the camera.
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