CN112879002A - Coal mine multifunctional model test mining device and method - Google Patents
Coal mine multifunctional model test mining device and method Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 106
- 238000005065 mining Methods 0.000 title claims abstract description 71
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 105
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims description 8
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- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/04—Safety devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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Abstract
The invention discloses a coal mine multifunctional model test mining device and a method, and the technical scheme is as follows: comprises a combined cutting assembly, a coal collecting protection assembly, a powerful coal discharging assembly and a power assembly. The combined cutting assembly comprises a plurality of cutting units and detachable joint cutting assemblies which are spliced together, and is used for performing rotary cutting on a working surface and performing joint cutting on a roadway top plate; the coal collection protection assembly comprises a plurality of coal collection protection units which are spliced together, and a coal collector is arranged in each coal collection protection unit; the powerful coal outlet assembly comprises a high-power coal suction device, the high-power coal suction device is connected with one end of a guide pipe through a hose, and the other end of the guide pipe is connected with a coal collector; the power assembly comprises a power source and a telescopic positioning rod connected with the power source, and the end part of the telescopic positioning rod is connected with the guide pipe. The invention can realize automatic mining of the working face and advanced joint cutting of the roadway roof, can truly reduce the peripheral stress and the mining process of the working face, and provides guarantee for experimental research of a coal mining model.
Description
Technical Field
The invention relates to the field of coal mine model tests, in particular to a coal mine multifunctional model test mining device and method.
Background
The coal mine mining is mainly based on a longwall mining technology, and can be divided into a '121' construction method, a '110' construction method and an 'N00' construction method according to different mining technologies. The main difference is that 1 working face is mined by a 121 construction method, 2 mining roadways are required to be excavated, and a coal pillar is reserved. The '110' method and the 'N00' method are to perform cutting on the top plate of the roadway in advance and automatically form the roadway by using mine pressure, and only 1 roadway is dug (the '110' method) or no roadway is dug (the 'N00' method). The research on the mining technology is mainly based on theoretical analysis, numerical simulation and field test methods, a certain research result is obtained, but a theoretical analysis model is simplified too much, numerical simulation constitutive parameters are difficult to select, field monitoring investment is large, the period is long, and interference caused by irrelevant factors is large, and the model test is an effective research method for comprehensively monitoring a reduction mining process by reducing the size of a research area to a certain scale to prepare a model body.
At present, when the coal mining test simulation is carried out, the mode of manual excavation or replacement of embedded parts is mostly adopted, and the two modes have some problems. The manual excavation mode is only suitable for a plane model test, the working face mining is a three-dimensional problem, the authenticity of a result is greatly influenced by adopting a plane model, and meanwhile, the manual excavation is difficult to simulate the three-dimensional model joint cutting construction. The real stress field of the working face cannot be restored by the replacement mode of the embedded part, and the stress information in the advanced working face is difficult to monitor, so that the reliability of the test is reduced, and the experimental research of a coal mining model is restricted.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a coal mine multifunctional model test mining device and method, which can realize automatic mining of a working face, restore the actual mining process, ensure the authenticity of a stress field around the working face and realize the automation and intellectualization of the mining process of the working face.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a coal mine multifunctional model test mining apparatus, including:
the combined cutting assembly comprises a plurality of cutting units which are spliced together, and the cutting units can rotationally cut a working surface;
the coal collection protection assembly comprises a plurality of coal collection protection units which are spliced together, and a coal collector is arranged in each coal collection protection unit;
the powerful coal discharging assembly comprises a coal suction device, the coal suction device is connected with one end of a guide pipe through a hose, and the other end of the guide pipe is connected with a coal collector;
the power assembly comprises a power source and a telescopic positioning rod connected with the power source, and the end part of the telescopic positioning rod is fixed with the guide pipe; the power source provides power through the telescopic locating rod.
As a further implementation manner, the cutting unit comprises a cutting drum and an in-wheel motor, and the in-wheel motor is connected with the cutting drum to drive the cutting drum to rotate; the outer side of the cutting roller is detachably connected with a plurality of teeth.
As a further implementation mode, the surface of the cutting drum is provided with a thread groove, and teeth are arranged on the outer side of the cutting drum through the thread groove; the teeth are uniformly distributed along the circumferential direction of the cutting roller and are uniformly distributed for a plurality of circles along the axial direction of the cutting roller.
As a further implementation mode, the hub motor is positioned inside the cutting roller, and a bearing is arranged on a motor shaft of the hub motor; a positioning plate is arranged on the side surface of the coal collection protection component, and is provided with a plurality of positioning grooves; the bearing is fixed through a positioning groove.
As a further implementation mode, the coal gathering and protecting device further comprises a top cutting assembly, wherein the top cutting assembly is installed on the side face of the coal gathering and protecting assembly and used for simulating the cutting of the roadway top plate.
As a further implementation manner, the top cutting assembly comprises a cutter and a cutter motor, and the cutter motor is arranged in the center of the cutter; the cutter head is connected with one end of the connecting rod through the fixing rod, and the other end of the connecting rod is detachably connected with the coal collecting protection assembly.
As a further implementation mode, two guide pipes are symmetrically arranged on two sides of the coal collection protection assembly, and two ends of the coal collector are connected with one guide pipe respectively.
As a further implementation mode, the coal collection protection unit comprises an upper cover plate and a base, and the upper cover plate is connected above the base through a locking shaft.
As a further implementation mode, the guide pipe is formed by splicing a plurality of sections of hollow steel pipes, and the end part of the telescopic positioning rod is fixedly connected with the guide pipe through a clamping ring.
In a second aspect, an embodiment of the present invention further provides a coal mining multifunctional model test mining method, which uses the mining apparatus, including:
designing the size of a mining device;
filling and loading a model body, and excavating to form mining roadways on two sides of a working face after loading is finished;
arranging the mining device at a design position, and assembling the mining device;
starting the hub motor, and carrying out working face mining simulation; and starting the cutter motor to simulate the cutting seam.
The beneficial effects of the above-mentioned embodiment of the present invention are as follows:
(1) one or more embodiments of the invention have a combined cutting assembly, a coal collection protection assembly, a powerful coal production assembly and a power assembly, can truly reduce the mining process of the coal face, and the power assembly can push the mining device to move directionally without influencing the collapse of the lagging working face.
(2) According to one or more embodiments of the invention, the formed model body can be excavated, so that the more real stress field of the top plate and the bottom plate of the working face can be reduced, and the influence of the traditional pre-buried mode on the stress field around the coal seam can be further avoided.
(3) According to one or more embodiments of the invention, the cutting roller is driven by the hub motor to realize rolling cutting on the working face, and the device moves directionally under the action of the power source, so that automatic mining of the working face is realized, the mining efficiency is improved, and the test error is reduced.
(4) The roof cutting assembly provided in one or more embodiments of the present invention can simulate the cutting of the tunnel roof.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic block diagram of the present invention according to one or more embodiments;
FIG. 2 is a cross-sectional view of the present invention according to one or more embodiments;
FIG. 3 is a schematic illustration of the operating state of the present invention in accordance with one or more embodiments;
FIG. 4 is a schematic diagram of a topping assembly according to one or more embodiments of the present disclosure;
FIG. 5 is a schematic illustration of the invention in an operational state after installation of a roof cutting assembly according to one or more embodiments;
the cutting machine comprises a machine frame, a cutting assembly, a combined cutting assembly, a cutting roller, a hub motor, a bearing, teeth and a thread groove, wherein 1 to 1 part of the combined cutting assembly, 1 to 2 parts of the combined cutting assembly, 1 to 3 parts of the hub motor, 1 to 4 parts of the bearing, 1 to 5 parts of the combined teeth and the thread; 2. the coal collecting protection component comprises 2-1 parts of an upper cover plate 2-2 parts of a locking shaft 2-3 parts of a coal collector 2-4 parts of a positioning plate; 3. 3-1 parts of a strong coal discharging assembly, 3-2 parts of a guide pipe, 3-3 parts of a hose and 3-3 parts of a coal absorbing device; 4. 4-1 parts of a power assembly, 4-2 parts of a power source, 4-3 parts of a telescopic positioning rod and a clamping ring; 5. the device comprises a model test frame 6, a top cutting assembly 6-1, a cutter head 6-2, a cutter head motor 6-3, a connecting rod 6-4 and a fixing rod.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting in this application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and the terms can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows:
the embodiment provides a multi-functional model test mining device in colliery, as shown in fig. 1 and 5, including combination cutting assembly 1, collection coal protection subassembly 2, powerful play coal subassembly 3, power component 4, crest contact subassembly 6, combination cutting assembly 1 is installed in collection coal protection subassembly 2 inboard, and collection coal protection subassembly 2 is used for fixed combination formula cutting assembly 1, plays the effect of collecting the piece and protecting simultaneously. The strong coal outlet component 3 is connected with the coal collecting protection component 2, and the power component 4 is connected with the strong coal outlet component 3 in a sliding way; the power assembly 4 provides power for the device and ensures that the device can move directionally. When the roof cutting simulation is carried out, the roof cutting component 6 is arranged on the side surface of the coal collecting protection component 2, and the roof cutting component is detached when roof cutting is not needed, so that the device can carry out independent coal mining work.
Specifically, the combined cutting assembly 1 is composed of a plurality of cutting units, the plurality of cutting units are connected along the axial direction, and the number of the cutting units assembled together is adjusted according to mining requirements of working faces with different lengths. In the embodiment, the length of the working face is 200cm, the length of each section of cutting roller 1-1 is 10cm, and the mining requirement of the working face can be met by splicing 10 sections of cutting rollers 1-1.
The cutting unit comprises a cutting roller 1-1, a hub motor 1-2 and teeth 1-4, wherein as shown in figure 2, the teeth 1-4 are uniformly distributed along the circumferential direction of the cutting roller 1-1 and are uniformly distributed along the axial direction of the cutting roller 1-1 for a plurality of circles.
Further, the surface of the cutting roller 1-1 is provided with a thread groove 1-5, and the teeth 1-4 are arranged on the outer side of the cutting roller 1-1 through the thread groove 1-5. The teeth 1-4 with different lengths can be selected according to the heights of different working faces, so that mining of the working faces with different heights is realized. In the embodiment, the height of the working face is 10cm, the outer diameter of the cutting roller 1-1 is 5cm, and the teeth 1-4 with the length of 2.5cm are selected, so that the mining requirement of the working face can be met.
The cutting roller 1-1 is connected with the hub motor 1-2, and the cutting roller 1-1 is driven to rotate by the hub motor 1-2 so as to realize rolling cutting of a working surface. In the embodiment, the in-wheel motor 1-2 is located inside the cutting drum 1-1, a bearing 1-3 is installed on a motor shaft of the in-wheel motor 1-2, and the in-wheel motor 1-2 is connected with the inner wall of the cutting drum 1-1 through a cross bracket, so that the cutting drum 1-1 is driven to rotate.
Further, the coal collection protection assembly 2 comprises a coal collection protection unit corresponding to the cutting unit, and the length of the coal collection protection unit is larger than that of the cutting unit. The number of the cutting units is adjusted, and the number of the corresponding coal collecting protection units is also adjusted. In the embodiment, the length of the working face is 200cm, the length of each coal collecting protection unit is 40cm, and the requirement is met by splicing 5 sections.
The coal collecting protection unit comprises an upper cover plate 2-1, a locking shaft 2-2, a base and a coal collector 2-3, wherein the cross section of the base is L-shaped and covers one side of a cutting roller 1-1; in this embodiment, the height of the base is up to the axial center of the cutting drum 1-1, and it is understood that in other embodiments, the height of the base can be adaptively adjusted, i.e. can be higher or lower than the axial center of the cutting drum 1-1.
The upper cover plate 2-1 is connected with the base through the locking shaft 2-2, and the opening degree of the upper cover plate 2-1 can be adjusted around the locking shaft 2-2, so that the rotation of the cutting roller 1-1 is prevented from being influenced. Further, the upper cover plate 2-1 is an arc-shaped plate, the upper cover plate 2-1 and the base cover the side face of the cutting roller 1-1, and a certain distance is reserved between the upper cover plate 2-1 and the edge of the cutting roller 1-1. One end of the upper cover plate 2-1, which is far away from the locking shaft 2-2, is bent downwards, namely the bending direction is consistent with the circumferential direction of the cutting roller 1-1.
The side surface of the base is provided with a positioning plate 2-4, the positioning plate 2-4 is provided with a plurality of positioning grooves 2-4, the shapes of the positioning grooves 2-4 are matched with those of the bearings 1-3, and the bearings 1-3 are arranged in the positioning grooves 2-4 to realize the installation of the cutting roller 1-1. The bearings 1-3 are arranged in positioning grooves 2-4 with different heights to adjust the position of the cutting roller 1-1, so that mining of working faces with different heights is realized. In this embodiment, the distance between adjacent positioning grooves 2-4 is 0.5 cm.
Furthermore, a coal collector 2-3 is arranged in the base, the middle of the coal collector 2-3 is partitioned into two parts, and two ends of the coal collector are respectively connected with the powerful coal discharging assembly 3. The powerful coal discharging assembly 3 comprises two guide pipes 3-1, a hose 3-2 and a coal suction device 3-3, and the two guide pipes 3-1 are symmetrically arranged at two sides of the coal collecting protection assembly 2; the two guide pipes 3-1 are respectively connected with one end of the coal collector 2-3.
In the embodiment, the guide pipe 3-1 is formed by splicing a plurality of sections of high-strength hollow steel pipes, and plays a role in slag discharge and pulling; one end of the guide pipe 3-1 is detachably connected with the coal collector 2-3, and the other end is connected with the hose 3-2; the hose 3-2 is connected with a coal suction device 3-3. The coal suction device 3-3 in the embodiment is a high-power coal suction device, and the discharge of cutting chips is realized through the high-power coal suction device. Preferably, the power of the high-power coal suction device is 3000W.
In the embodiment, the working surface is 300cm long, the length of 3-1 sections of the guide pipe is 60cm, the outer diameter is 1.2cm, and the inner diameter is 0.6cm, and the guide pipe is formed by splicing 6 sections; the hose 3-2 is 150cm long.
Further, the power assembly 4 comprises a power source 4-1, a telescopic positioning rod 4-2 and a clamping ring 4-3, two ends of the telescopic positioning rod 4-2 are respectively connected with the clamping ring 4-3, the clamping ring 4-3 is sleeved on the outer side of the guide pipe 3-1 and fixed with the guide pipe, and the power source 4-1 is connected to one side of the telescopic positioning rod 4-2.
The telescopic positioning rod 4-2 can be telescopic so as to meet the requirements of working surfaces with different lengths. In this embodiment, the length of the working surface is 200cm, and the length of the telescopic positioning rod 4-2 is adjusted to 200 cm. The power source 4-1 can provide linear motion and provide stable power for the advancing of the mining device.
In this embodiment, the power source 4-1 is an electric jack, and the electric jack is perpendicular to the telescopic positioning rod 4-2; the effective stroke of the electric jack is 80 cm. Of course, in other embodiments, the power source 4-1 may be a cylinder, a linear motor, or other structures.
When in use, as shown in figure 3, the telescopic positioning rod 4-2, the guide pipe 3-1 and the cutting roller 1-1 are arranged outside the model test frame 5 in an enclosing way, and the power source 4-1 is fixed with the side surface of the model test frame 5; and starting the power source 4-1, pushing the telescopic positioning rod 4-2 to move by the power source 4-1, and driving the guide pipe 3-1, the combined cutting assembly 1 and the coal collection protection assembly 2 to move by the telescopic positioning rod 4-2.
Further, as shown in fig. 4, the top cutting assembly 6 comprises a cutter disc 6-1 and a cutter disc motor 6-2, the cutter disc 6-1 is connected with one end of a connecting rod 6-3 through a fixing rod 6-4, and the other end of the connecting rod 6-3 is detachably connected with the positioning plate 2-4.
Wherein, the connecting rod 6-3 is respectively vertical to the positioning plate 2-4 and the fixed rod 6-4, and the connecting rod 6-3 is rotationally connected with the cutter head 6-1. The cutter motor 6-2 is arranged at the center of the cutter 6-1, and the cutter 6-1 rotates under the driving action of the cutter motor 6-2 to realize the top cutting operation.
Example two:
the embodiment provides a coal mining multifunctional model test mining method, and the mining device of the embodiment I comprises the following steps:
before the test is started, the sizes of all parts of the mining device are designed according to the geometric parameters of a working face, wherein the sizes comprise the length of a cutting roller 1-1, the length of a tooth 1-4, the length of a bearing 1-3, the length of a guide pipe 3-1, the length of a telescopic positioning rod 4-2, the opening degree of an upper cover plate 2-1 and the like, then the splicing of the mining device is completed, and a power source 4-1 is installed at the design position of a model test frame 5.
And (4) filling and loading the model body, and excavating to form mining roadways on two sides of the working face after the loading is finished.
The mining device is arranged at a designed position, a guide pipe 3-1 penetrates through a mining roadway, one end of the guide pipe is connected with a coal collector 2-3, the other end of the guide pipe is clamped by a clamping ring 4-3, and the guide pipe is connected with a coal suction device 3-3 through a hose 3-2.
And after all parts are ready, carrying out working face mining simulation according to the design progress. During mining, the hub motor 1-2 is started, and the hub motor 1-2 drives the cutting roller 1-1 to roll to cut the working face. After the mining of the working face at a certain position is finished, the power source 4-1 is started to move the mining device to mine the next working face.
In the mining process, cutting coal dust enters the coal collector 2-3, and the cutting coal dust is discharged by starting the coal suction device 3-3.
And starting the cutter motor 6-2, and cutting the cutter 6-1 in a rotating manner to form a cutting seam.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The experimental mining device of multi-functional model in colliery, its characterized in that includes:
the combined cutting assembly comprises a plurality of cutting units which are spliced together, and the cutting units can rotationally cut a working surface;
the coal collection protection assembly comprises a plurality of coal collection protection units which are spliced together, and a coal collector is arranged in each coal collection protection unit;
the powerful coal discharging assembly comprises a coal suction device, a coal guide pipe and a coal collector, wherein the coal suction device is connected with one end of the guide pipe through a hose;
the power assembly comprises a power source and a telescopic positioning rod connected with the power source, and the end part of the telescopic positioning rod is connected with the guide pipe; the power source provides power through the telescopic locating rod.
2. The coal mine multifunctional model test mining device according to claim 1, wherein the cutting unit comprises a cutting roller and an in-wheel motor, and the in-wheel motor is connected with the cutting roller to drive the cutting roller to rotate; the outer side of the cutting roller is detachably connected with a plurality of teeth.
3. The coal mine multifunctional model test mining device as claimed in claim 2, wherein the surface of the cutting drum is provided with a thread groove, and teeth are arranged on the outer side of the cutting drum through the thread groove; the teeth are staggered along the cutting drum.
4. The coal mine multifunctional model test mining device according to claim 2, wherein the hub motor is positioned inside the cutting drum, and a bearing is mounted on a motor shaft of the hub motor; positioning plates are arranged at two ends of the coal collecting protection assembly, and are provided with a plurality of positioning grooves; the bearing is fixed through a positioning groove.
5. The coal mine multifunctional model test mining device as claimed in claim 1, further comprising a roof cutting assembly, wherein the roof cutting assembly is mounted at one end of the coal collection protection assembly and used for performing tunnel roof kerf simulation.
6. The coal mine multifunctional model test mining apparatus of claim 5, wherein the roof cutting assembly includes a cutterhead, a cutterhead motor; the cutter head is connected with one end of the connecting rod through the fixing rod, and the other end of the connecting rod is detachably connected with the coal collecting protection assembly.
7. The coal mine multifunctional model test mining device as claimed in claim 1, wherein two ends of the coal collection protection assembly are connected with guide pipes, and the guide pipes are communicated with the coal collector.
8. The coal mine multifunctional model test mining device as claimed in claim 1, wherein the coal collection protection unit comprises an upper cover plate and a base, and the upper cover plate is connected above the base through a locking shaft.
9. The coal mine multifunctional model test mining device as claimed in claim 1, wherein the guide pipe is formed by splicing a plurality of sections of hollow steel pipes, and the end part of the telescopic positioning rod is connected with the guide pipe through a clamping ring.
10. A coal mining multifunctional model test mining method, using the mining apparatus according to any one of claims 1 to 9, comprising:
designing the size of a mining device;
filling and loading a model body, and excavating to form mining roadways on two sides of a working face after loading is finished;
arranging the mining device at a design position, and assembling the mining device;
starting the hub motor, and carrying out working face mining simulation; and starting the cutter motor to simulate the cutting seam.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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