Single-end roadway ventilation analog simulation experiment device

Abstract

The invention provides an analog simulation experiment device for ventilation of a blind roadway. Comprising a ventilation roadway, an air duct arranged in the ventilation roadway, a moving device used for driving the air duct to move in the X-axis direction, the Y-axis direction and the Z-axis direction, an inclination device arranged at the bottom of the ventilation roadway and used for simulating an inclined roadway, and a monitoring device used for analyzing the migration rule of a simulation medium in the ventilation roadway. The air duct is connected with the Y-axis moving device through an air duct hanging device. By arranging an X-axis moving device, a Y-axis moving device and a Z-axis moving device, the air duct can freely change in three dimensions including the distance from the air duct to a lateral wall, the hanging height and the distance from the air duct to a head-on surface; the inclination of the ventilation roadway at different angles is realized by arranging the inclination device, so that an actual underground inclined roadway is simulated; and the monitoring device detects the working condition in the ventilation tunnel and analyzes and simulates the medium migration rule. According to the analog simulation experiment device for ventilation of the blind roadway, the experiment efficiency and the accuracy of experiment data can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation simulation, and in particular to a similar simulation experimental device for ventilation of a dead-end tunnel. Background Art

[0002] There is only one exit in the dead-end tunnel, which makes it difficult to form a through wind flow. A large amount of toxic and harmful gases and dust are easily accumulated in the tunnel, posing a serious threat to the physical and mental health of mine workers. Therefore, the prevention and control methods and technologies of dust, high temperature, and toxic and harmful gases in the dead-end tunnel are currently a hot topic and difficulty in research.

[0003] At present, most of the methods used to explore and analyze the optimization of ventilation parameters in dead-end tunnels are numerical simulation. In order to reduce the error between numerical simulation and field measurement and make the simulation more accurate, the combination of numerical simulation and field measurement has become the first choice of scholars. However, field measurement has the disadvantages of difficult operation, high research cost, low efficiency and long cycle. The similar experimental model developed based on similarity principle and field data has become the mainstream means to verify the accuracy and practicality of simulation results.

[0004] In the prior art, similar experimental platforms for ventilation simulation, the position of the suspended wind tube is generally fixed, or manually adjusted when necessary, which not only increases the difficulty of doing experiments, but also the accuracy of experimental data needs to be verified. In addition, the existing dead-end tunnel ventilation device is fixed, and it is impossible to adjust the inclination angle of the entire experimental device according to the actual inclination of the dead-end tunnel.

[0005] In view of this, it is necessary to provide a new simulation experimental device to improve the experimental efficiency and the accuracy of experimental data. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a similar simulation experimental device for dead-end tunnel ventilation, which can make the wind duct freely change in three dimensions of distance from the side wall, hanging height and distance from the front face, and can adjust the inclination angle of the similar experimental model device of the dead-end tunnel, and at the same time can monitor and analyze the migration law of the simulated medium in the dead-end tunnel, thereby improving the experimental efficiency and the accuracy of the experimental data.

[0007] The technical solution of the present invention is:

[0008] A similar simulation experimental device for dead-end tunnel ventilation comprises a ventilation tunnel, a wind tube arranged in the ventilation tunnel, a moving device for driving the wind tube to move along the X-axis, Y-axis and Z-axis directions, a tilting device arranged at the bottom of the ventilation tunnel for simulating an inclined tunnel, and a monitoring device for analyzing the migration law of a simulated medium in the ventilation tunnel;

[0009] The moving device includes an X-axis moving device, a Y-axis moving device and a Z-axis moving device, wherein the X-axis moving device includes a plurality of groups of X-axis double slide rails arranged in the ventilation tunnel, a first pulley and a second pulley correspondingly arranged in each group of X-axis double slide rails, a first rotating shaft connecting the first pulley and the second pulley, and a first driving device for driving the first rotating shaft;

[0010] The Z-axis moving device is connected to the X-axis moving device, and includes a pulley fixing device connected to the X-axis moving device, a Z-axis lifting pulley provided on the pulley fixing device, a lifting rope wound around the Z-axis lifting pulley, and a second driving device for driving the Z-axis lifting pulley to rotate to realize the lifting rope retracting / releasing;

[0011] The Y-axis moving device is connected to the Z-axis moving device, and comprises a Y-axis slide rail connected to the lifting rope, a Y-axis pulley arranged at the front end of the Y-axis slide rail, and a third driving device for driving the Y-axis pulley to move along the Y-axis slide rail;

[0012] The wind duct is connected to the Y-axis moving device through a wind duct suspension device, and the wind duct suspension device includes a first fixed part connected to the Y-axis pulley and driven by the Y-axis pulley, a plurality of second fixed parts fixed to the Y-axis slide rail near the tunnel exit end, and a suspension member connected to the first fixed part and the second fixed part, and the wind duct is movably mounted on the suspension member.

[0013] Furthermore, the Y-axis slide rail includes a first Y-axis slide rail near the front face end and a second Y-axis slide rail near the tunnel exit end. The length of the first Y-axis slide rail is 1 / 3 of the length of the ventilation tunnel, and the length of the second Y-axis slide rail is 2 / 3 of the length of the ventilation tunnel.

[0014] Furthermore, the suspension member is a ring, and the air duct passes through the ring. When the third driving device drives the Y-axis pulley to move, the Y-axis pulley drives the suspension member corresponding to the first fixed part to move, thereby realizing the movement of the air duct in the Y-axis direction.

[0015] Furthermore, the tilting device includes a central axis supporting device arranged on a horizontal plane and used to support the middle part of the ventilation tunnel, and a telescopic device arranged at the bottom of the ventilation tunnel, and the telescopic device drives the ventilation tunnel to tilt.

[0016] Furthermore, the inclination angle of the ventilation tunnel is 0-15°.

[0017] Furthermore, the monitoring device includes a sliding guide rail arranged on one side of the ventilation tunnel, a roller cooperating with the sliding guide rail, a fourth driving device driving the roller to slide along the sliding guide rail, a photographic device driven by the roller to slide and used to record the image of the migration of the simulated medium, a data acquisition device for detecting the operating parameters and the concentration of the simulated medium in the ventilation tunnel, and a data processing device. The photographic device and the data acquisition device send the detection data to the data processing device for analyzing the migration law of the simulated medium.

[0018] Furthermore, the operating parameters include wind speed, wind pressure, temperature and humidity, and the simulated medium concentration is dust and / or toxic gas.

[0019] Furthermore, the first driving device, the second driving device and the third driving device are respectively connected to the mobile terminal for communication.

[0020] Compared with the prior art, the dead-end tunnel ventilation similarity simulation experimental device provided by the present invention has the following beneficial effects:

[0021] The dead-end tunnel ventilation similarity simulation experimental device provided by the present invention can realize free change of the air duct in three dimensions: distance from the side wall, hanging height and distance from the front face by setting an X-axis moving device, a Y-axis moving device and a Z-axis moving device; realize the inclination of the ventilation tunnel at different angles by setting an inclination device to simulate the actual underground inclined tunnel; detect the working conditions in the ventilation tunnel by a monitoring device and analyze the migration law of the simulated medium. The dead-end tunnel ventilation similarity simulation experimental device of the present invention can effectively improve the experimental efficiency and the accuracy of the experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of a similar simulation experimental device for dead-end tunnel ventilation of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the X-axis moving device in the present invention;

[0025] Figure 3 yes Figure 2 The schematic diagram of the first driving device in the X-axis moving device shown;

[0026] Figure 4 It is a schematic diagram of the structure of the Z-axis moving device in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the Y-axis moving device in the present invention;

[0028] Figure 6 It is a schematic diagram of the connection between the Y-axis moving device and the wind tube suspension device in the present invention;

[0029] Figure 7 It is a schematic diagram of the connection between the tilting device and the ventilation tunnel in the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention and to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation modes of the present invention are further described below.

[0031] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0032] See also Figure 1 , is a structural schematic diagram of a dead-end tunnel ventilation similarity simulation experimental device of the present invention. The dead-end tunnel ventilation similarity simulation experimental device of the present invention comprises a ventilation tunnel 1, a wind tube 2, a moving device 3 for driving the wind tube to move along the X-axis, Y-axis and Z-axis directions, a tilting device 4 arranged at the bottom of the ventilation tunnel 1 for simulating an inclined tunnel, and a monitoring device 5 for analyzing the migration law of the simulated medium in the ventilation tunnel.

[0033] The ventilation tunnel 1 is composed of a bottom plate, a top plate, two side plates and an end plate. In order to facilitate the monitoring device 5 to record the simulated medium migration image in the ventilation tunnel in real time, preferably, the ventilation tunnel is made of a transparent material. And the size specifications of the ventilation tunnel 1 are designed in proportion to the actual dead-end tunnel to ensure the reliability of the data.

[0034] The wind tube 2 is suspended, and the movement of the wind tube in the X-axis, Y-axis and Z-axis directions is controlled by the moving device 3, so that the wind tube can be freely changed in three dimensions: the distance from the side wall, the hanging height and the distance from the front face. In this embodiment, the X-axis corresponds to the left and right direction of the ventilation tunnel (used to adjust the distance from the side wall), the Y-axis corresponds to the front and back direction of the ventilation tunnel (used to adjust the distance from the front face), and the Z-axis corresponds to the vertical direction of the ventilation tunnel (used to adjust the hanging height).

[0035] The moving device 3 includes an X-axis moving device 31, a Z-axis moving device 32 and a Y-axis moving device 33. Figure 2 , is a schematic diagram of the structure of the X-axis moving device in the present invention. The X-axis moving device 31 includes a plurality of sets of X-axis double slide rails 311 arranged in the ventilation tunnel 1, a first pulley 312 and a second pulley 313 correspondingly arranged in each set of X-axis double slide rails, a first rotating shaft 314 connecting the first pulley 312 and the second pulley 313, and a first driving device 315 connected to the first rotating shaft 314 and located below the first rotating shaft.

[0036] In order to maintain the stability of the movement of the wind tube, in the present invention, the X-axis double slide rails are at least two groups. In this embodiment, the X-axis double slide rails are three groups, which are evenly arranged along the length direction of the ventilation tunnel.

[0037] The first driving device 315 works to drive the first rotating shaft 314 to rotate, thereby driving the first pulley 312 and the second slide 313 to move axially along the X-axis double slide rail to change the distance between the wind tube and the side wall. Specifically, the movement direction of the first pulley and the second pulley is controlled by controlling the forward / reverse rotation of the motor of the first driving device.

[0038] See also Figure 3 ,yes Figure 2 The schematic diagram of the first driving device in the X-axis moving device shown. In the present embodiment, the first driving device 315 includes a power supply, a voltage stabilizing module, a single-chip microcomputer electrically connected to the voltage stabilizing module, a motor drive electrically connected to the single-chip microcomputer, and a motor controlled by the motor drive. Wherein the power supply selects a model aircraft battery, which has the advantages of large capacity and high output power, and is suitable for high-power electricity (motor 12V) equipment. The voltage stabilizing module converts the 12V voltage into 5V and provides it to the single-chip microcomputer. Due to the limited driving capacity of the IO port of the single-chip microcomputer (current is limited), it is necessary to increase the motor drive to make the motor rotate, and the motor drive can increase the load capacity of the single-chip microcomputer, so that the single-chip microcomputer can better control the motor. Therefore, after the single-chip microcomputer receives the control instruction, it immediately starts to operate the motor drive, and then implements effective control of the motor. In the present embodiment, the motor drive is an L298N motor drive.

[0039] In this embodiment, the first driving device 315 is connected to the mobile terminal in communication, such as via Bluetooth. The mobile terminal sends a control instruction via Bluetooth, and the single-chip microcomputer effectively controls the motor after receiving the control instruction. The mobile terminal can be a mobile phone, a tablet, a computer, etc.

[0040] See also Figure 4, is a schematic diagram of the structure of the Z-axis moving device in the present invention. The Z-axis moving device 32 is connected to the X-axis moving device 31, and includes a pulley fixing device 321 connected to the first driving device 315, a Z-axis lifting pulley 322 arranged on the pulley fixing device 321, a lifting rope 323 wound around the Z-axis lifting pulley 322, and a second driving device 324 for driving the Z-axis lifting pulley 322 to rotate to realize the lifting rope collection / release. The second driving device 324 works to drive the lifting rope to collect / release, thereby changing the hanging height of the wind tube. Specifically, the movement direction of the lifting rope is controlled by controlling the forward / reverse rotation of the motor of the second driving device.

[0041] Corresponding to the double slide rails of the X-axis, in this embodiment, there are three groups of Z-axis moving devices, and the pulley fixing devices correspond one to one to the first driving devices.

[0042] The working principle of the second driving device 324 in this embodiment is the same as that of the first driving device, and is also connected to the mobile terminal through communication, such as Bluetooth. The mobile terminal sends a control instruction through Bluetooth, and the single-chip microcomputer effectively controls the motor after receiving the control instruction.

[0043] See also Figure 5 , is a schematic diagram of the structure of the Y-axis moving device in the present invention. The Y-axis moving device 33 is used to realize the forward and backward movement of the wind duct in the length direction of the ventilation tunnel. The Y-axis moving device 33 is connected to the Z-axis moving device 31, and includes a Y-axis slide rail 331 connected to the lifting rope 323, a Y-axis pulley 332 arranged at the front end of the Y-axis slide rail 331, and a third driving device 333 for driving the Y-axis pulley 332 to move along the Y-axis slide rail. The movement direction of the Y-axis pulley 332 is controlled by controlling the forward / reverse rotation of the motor of the third driving device. The wind duct is connected to the Y-axis moving device 33, and the movement of the wind duct in the X, Y and Z axis directions is realized through the X-axis moving device, the Z-axis moving device and the Y-axis moving device.

[0044] According to actual research and production process, it is found that the distance that the wind tube moves forward and backward generally does not exceed 1 / 3 of the length of the tunnel, and in order to maintain the stability of the wind tube suspension, in this embodiment, the Y-axis slide rail 331 is divided into two sections, namely the first Y-axis slide rail 3311 near the front end and the second Y-axis slide rail 3312 near the tunnel outlet end, wherein the length of the first Y-axis slide rail 3311 is 1 / 3 of the length of the ventilation tunnel, and the length of the second Y-axis slide rail 3312 is 2 / 3 of the length of the ventilation tunnel. Since the Y-axis pulley 332 is arranged on the first Y-axis slide rail 3311, the maximum movement path of the Y-axis pulley is 1 / 3 of the length of the ventilation tunnel, which can meet the requirement that the distance that the wind tube moves forward and backward generally does not exceed 1 / 3 of the length of the tunnel.

[0045] The working principle of the third driving device 333 in this embodiment is the same as that of the first driving device, and is also connected to the mobile terminal through communication, such as through Bluetooth. The mobile terminal sends a control instruction through Bluetooth, and the single-chip microcomputer effectively controls the motor after receiving the control instruction.

[0046] See also Figure 6 , is a schematic diagram of the connection between the Y-axis moving device and the wind tube suspension device in the present invention. In the present invention, the wind tube 2 is connected to the Y-axis moving device 33 through the wind tube suspension device 34. The wind tube suspension device 34 includes a first fixed portion 341 connected to the Y-axis pulley 332 and driven by the Y-axis pulley 332, a plurality of second fixed portions 342 fixed to the second Y-axis slide rail 3312, and a suspension member 343 connected to the first fixed portion 341 and the second fixed portion 342. The wind tube 2 is movably mounted on the suspension member 343. Specifically, the first fixed portion 341 is connected to the connecting shaft between the third driving device 333 and the Y-axis pulley 332, and its movement path is the same as the movement path of the Y-axis slide 332. Since the second fixed portion 342 is fixedly connected to the second Y-axis slide rail 3312, during the movement of the wind tube in the Y-axis direction, the second fixed portion and the suspension member connected thereto are fixed, that is, the suspension member connected to the second fixed portion plays a role in supporting the wind tube. When the Y-axis pulley 332 drives the first fixing part to move, the hanging member connected to the first fixing part drives the air cylinder to move, so that the air cylinder slides in other hanging members.

[0047] In this embodiment, the number of Y-axis pulleys provided on the first Y-axis slide rail 3311 is at least two, and the number of second fixing portions is multiple and evenly distributed on the second Y-axis slide rail 3312, so that the operation is more stable.

[0048] In this embodiment, the hanging member 343 is a circular ring, and the air cylinder passes through the circular ring and can move relatively. When the third driving device 333 drives the Y-axis pulley 332 to move, the Y-axis slides to drive the hanging member corresponding to the first fixing part to move, and the corresponding hanging member lifts the air cylinder to move in the Y-axis direction.

[0049] The movement of the wind tube on the X-axis, Y-axis and Z-axis is achieved through the X-axis moving device 31, the Z-axis moving device 32, the Y-axis moving device 33 and the wind tube hanging device 34. Specifically, the movement principle of the wind tube is as follows:

[0050] When the wind tube moves only in the X-axis direction, the driving devices of the Z-axis moving device and the Y-axis moving device stop working, the corresponding pulley positions remain unchanged, and the first driving device 315 is started to drive the first pulley and the second pulley of the X-axis moving device to move in the X-axis direction. At this time, the Y-axis moving device and the Z-axis moving device move following the movement of the first pulley and the second pulley. The motor of the first driving device rotates clockwise, driving the first pulley and the second pulley to move rightward in the X-axis direction; the motor rotates counterclockwise, driving the first pulley and the second pulley to move leftward in the X-axis direction, thereby driving the wind tube to move in the X-axis direction.

[0051] When the wind tube moves only in the Z-axis direction (i.e. the wind tube moves up and down), the driving devices of the X-axis moving device and the Y-axis moving device stop working, and the second driving device is started to drive the Z-axis lifting pulley to rotate, thereby driving the lifting rope wound on the Z-axis lifting pulley to collect / release the rope. The motor of the second driving device rotates clockwise, the Z-axis lifting pulley collects the rope, and the wind tube moves upward; the motor of the second driving device rotates counterclockwise, the Y-axis lifting pulley releases the rope, and the wind tube moves downward.

[0052] When the wind tube moves only in the Y-axis direction, the driving devices of the X-axis moving device and the Z-axis moving device stop working, and the third driving device is started to drive the Y-axis pulley to slide along the Y-axis direction (i.e., the front and rear direction of the ventilation tunnel). The motor of the third driving device rotates clockwise, the Y-axis pulley moves forward, and drives the wind tube to move forward; the motor of the third driving device rotates counterclockwise, the Y-axis pulley moves backward, and drives the wind tube to move backward.

[0053] When the wind tube moves on the X-axis, Y-axis and Z-axis at the same time, the driving devices of the X-axis moving device, Y-axis moving device and Z-axis moving device work at the same time, and control the motor of each driving device to rotate forward / reverse according to the actual adjustment of the wind tube, so that the wind tube in the similar model of dead-end tunnel ventilation can move freely left and right, up and down, and front and back. And by controlling the speed of the motor, the moving speed of the wind tube left and right, up and down, and front and back can be controlled to achieve precise control of the moving distance.

[0054] In order to achieve the overall inclination of the ventilation tunnel, thereby simulating the working condition of the ventilation tunnel being in an inclined state, a tilting device 4 for simulating an inclined tunnel is set at the bottom of the ventilation tunnel 1. Figure 7, is a schematic diagram of the connection between the tilting device and the ventilation alley in the present invention. The tilting device 4 includes a central axis support device 41 arranged in a horizontal plane and used to support the middle part of the ventilation alley 1, and a telescopic device 42 arranged at the bottom of the ventilation alley 1 and located at its end. The central axis support device 41 includes a central axis and two triangular supports arranged on opposite sides of the central axis, one of the triangular supports is supported in a horizontal plane, and the other triangular support is connected to the bottom of the ventilation alley and can rotate relative to the central axis. The telescopic action of the telescopic device 42 drives the ventilation alley to tilt. At this time, the ventilation alley drives the triangular supports connected thereto to rotate relative to the central axis, so as to ensure the stability of the ventilation alley when it tilts. In this embodiment, the telescopic device is an electric support rod.

[0055] Specifically, the maximum inclination angle of the ventilation tunnel can be adjusted by setting the positions of the central axis support device 41 and the telescopic device 42. For example, a dead-end tunnel is 7 meters long through a similar simulation experimental device, the central axis support device is set at a position 4 meters away from the front face, the telescopic device is set at a position 2 meters away from the front face, and the telescopic device is extended, so that the maximum inclination angle of the ventilation tunnel can be 15°, which is used to simulate the excavation inclined tunnel in the actual mine.

[0056] like Figure 1 As shown, the monitoring device 5 includes a sliding guide rail 51 arranged on one side of the ventilation tunnel, a roller 52 cooperating with the sliding guide rail, a fourth driving device 53 driving the roller to slide along the sliding guide rail, a photographing device 54 driven by the roller to slide and used to record the image of the migration of the simulated medium, a data acquisition device 55 for detecting the working parameters and the concentration of the simulated medium in the ventilation tunnel, and a data processing device (not shown). The photographing device 54 and the data acquisition device 55 send the detection data to the data processing device for analyzing the migration law of the simulated medium.

[0057] In the present invention, the sliding guide rail 51 is a double sliding rail track to ensure the stability of the roller operation. There are four rollers 52, which are connected as a whole through a four-wheel positioning platform 56 to ensure the consistency of the roller operation. The photographic device 54 is supported and fixed on the four-wheel positioning platform 56, and is driven by the roller 52 to move. During the movement, the simulated medium particle migration graphic image in the ventilation tunnel is recorded, and the recorded data is transmitted to the data processing device.

[0058] The data acquisition device includes a plurality of sensors for collecting the working parameters and the concentration of the simulated medium in the ventilation tunnel, and sending the collected data to the data processing device, wherein the working parameters include wind speed, wind pressure, temperature and humidity, and the simulated medium is dust and / or toxic gas. When the simulated medium is a colorless gas, the gas color can be increased to facilitate recording its migration image. The data processing device analyzes the data according to the received simulated medium migration image, the working parameters and the simulated medium concentration in the ventilation tunnel, and obtains the migration law of the simulated medium. In this embodiment, the data processing device can be a laboratory monitoring computer.

[0059] In the present invention, the fourth driving device is also connected to the mobile terminal for communication, and the corresponding control instructions are sent out through the mobile terminal.

[0060] The following is a detailed description of the dead-end tunnel ventilation similarity simulation experimental device of the present invention through specific embodiments.

[0061] Experimental design: The air duct is 0.198m away from the left side, 0.098m away from the top plate, 0.6m away from the front face, and the tunnel is inclined at 5°, and the dust injection experiment is carried out. The working principle of the similar simulation experimental device for the ventilation of a dead-end tunnel is as follows:

[0062] 1. Start the X-axis moving device, and drive the first pulley and the second pulley to move along the X-axis double slide rail to the left side of the tunnel model through the first driving device, so that the wind tube is 0.198m away from the left side;

[0063] 2. Start the Z-axis moving device, and drive the Z-axis lifting pulley to rotate through the second driving device, driving the lifting rope to move up and down, so that the air duct is 0.098m away from the top plate;

[0064] 3. Start the Y-axis moving device, and drive the Y-axis pulley to move forward and backward along the Y-axis direction through the third driving device, so that the wind tube is 0.6m away from the front face;

[0065] 4. Drive the telescopic device of the tilting device to tilt the ventilation tunnel by 5°;

[0066] 5. Spray dust from the front face of the ventilation tunnel and connect it to the axial flow fan for ventilation and dust removal and dust removal spraying;

[0067] 6. Start the fourth driving device to drive the photographic device to move. As the dust migrates backward under the action of the wind flow, the photographic device moves synchronously to record the dust migration image in real time;

[0068] 7. The data acquisition device simultaneously collects data such as wind speed, wind pressure, temperature, humidity and dust concentration in the ventilation tunnel, and sends the data to the data processing device. The data processing device analyzes the migration law of dust based on the dust migration image and the working condition data in the ventilation tunnel.

[0069] The dead-end tunnel ventilation similarity simulation experimental device provided by the present invention can realize free change of the air duct in three dimensions: distance from the side wall, hanging height and distance from the front face by setting an X-axis moving device, a Y-axis moving device and a Z-axis moving device; realize the inclination of the ventilation tunnel at different angles by setting an inclination device to simulate the actual underground inclined tunnel; detect the working conditions in the ventilation tunnel by a monitoring device and analyze the migration law of the simulated medium. The dead-end tunnel ventilation similarity simulation experimental device of the present invention can effectively improve the experimental efficiency and the accuracy of the experimental data.

[0070] The embodiments of the present invention are described in detail above, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations made to these embodiments without departing from the principles and spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A similar simulation experimental device for dead-end tunnel ventilation, characterized in that: It comprises a ventilation tunnel, a wind tube arranged in the ventilation tunnel, a moving device for driving the wind tube to move along the X-axis, Y-axis and Z-axis directions, a tilting device arranged at the bottom of the ventilation tunnel for simulating an inclined tunnel, and a monitoring device for analyzing the migration law of the simulated medium in the ventilation tunnel; The moving device includes an X-axis moving device, a Y-axis moving device and a Z-axis moving device, wherein the X-axis moving device includes a plurality of groups of X-axis double slide rails arranged in the ventilation tunnel, a first pulley and a second pulley correspondingly arranged in each group of X-axis double slide rails, a first rotating shaft connecting the first pulley and the second pulley, and a first driving device for driving the first rotating shaft; The Z-axis moving device is connected to the X-axis moving device, and includes a pulley fixing device connected to the X-axis moving device, a Z-axis lifting pulley provided on the pulley fixing device, a lifting rope wound around the Z-axis lifting pulley, and a second driving device for driving the Z-axis lifting pulley to rotate to realize the lifting rope retracting / releasing; The Y-axis moving device is connected to the Z-axis moving device, and comprises a Y-axis slide rail connected to the lifting rope, a Y-axis pulley arranged at the front end of the Y-axis slide rail, and a third driving device for driving the Y-axis pulley to move along the Y-axis slide rail; The wind duct is connected to the Y-axis moving device through a wind duct suspension device, and the wind duct suspension device includes a first fixed part connected to the Y-axis pulley and driven by the Y-axis pulley, a plurality of second fixed parts fixed to the Y-axis slide rail near the tunnel exit end, and a suspension member connected to the first fixed part and the second fixed part, and the wind duct is movably mounted on the suspension member.

2. The dead-end tunnel ventilation similarity simulation experimental device according to claim 1 is characterized in that: The Y-axis slide rail includes a first Y-axis slide rail near the front face end and a second Y-axis slide rail near the tunnel exit end. The length of the first Y-axis slide rail is 1 / 3 of the length of the ventilation tunnel, and the length of the second Y-axis slide rail is 2 / 3 of the length of the ventilation tunnel.

3. The dead-end tunnel ventilation similarity simulation experimental device according to claim 1 is characterized in that: The hanging member is a sleeve ring, and the air cylinder passes through the sleeve ring. When the third driving device drives the Y-axis pulley to move, the Y-axis pulley drives the hanging member corresponding to the first fixing part to move, thereby realizing the movement of the air cylinder in the Y-axis direction.

4. The dead-end tunnel ventilation similarity simulation experimental device according to claim 1 is characterized in that: The tilting device comprises a central axis supporting device arranged on a horizontal plane and used to support the middle of the ventilation tunnel, and a telescopic device arranged at the bottom of the ventilation tunnel, and the telescopic device drives the ventilation tunnel to tilt.

5. The dead-end tunnel ventilation similarity simulation experimental device according to claim 4 is characterized in that: The inclination angle of the ventilation tunnel is 0-15°.

6. The dead-end tunnel ventilation similarity simulation experimental device according to claim 1 is characterized in that: The monitoring device includes a sliding guide rail arranged on one side of the ventilation tunnel, a roller cooperating with the sliding guide rail, a fourth driving device driving the roller to slide along the sliding guide rail, a photographic device driven by the roller to slide and used to record the image of the migration of the simulated medium, a data acquisition device used to detect the working parameters and the concentration of the simulated medium in the ventilation tunnel, and a data processing device. The photographic device and the data acquisition device send the detection data to the data processing device for analyzing the migration law of the simulated medium.

7. The dead-end tunnel ventilation similarity simulation experimental device according to claim 6 is characterized in that: The operating parameters include wind speed, wind pressure, temperature and humidity, and the simulated medium concentration is dust and / or toxic gas.

8. The similar simulation experimental device for dead-end tunnel ventilation according to any one of claims 1 to 7, characterized in that: The first driving device, the second driving device and the third driving device are respectively connected to the mobile terminal for communication.

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