Indoor test equipment for tunnel dust migration law research based on intelligent control

Abstract

The invention discloses indoor test equipment for tunnel dust migration law research based on intelligent control, a main body of the indoor test equipment is a tunnel model test device, the tunnel model test device is electrically connected with a data monitoring device and a control and analysis device, and the top of the tunnel model test device is also provided with a spray dust fall device. The problems that in the prior art, the dust diffusion condition generated by a tunnel drilling and blasting method is difficult to detect, and the construction dust cannot be linked with a spraying and dust falling device, so that optimal spraying parameters cannot be designed and summarized are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction dust migration, and in particular relates to indoor test equipment for studying the law of tunnel dust migration based on intelligent control. Background Art

[0002] At present, the drilling and blasting method is widely used in tunnel excavation construction, but a large amount of dust will be generated during the tunnel blasting process. This dust will not only pollute the construction environment and harm the health of workers, but also wear the machine and affect the construction progress. Spray dust reduction technology, as a green, simple and efficient dust reduction technology, has a very broad application prospect in the field of dust reduction. However, due to the complex construction conditions inside the tunnel and the many environmental variables, it is difficult to specifically and intuitively explore the migration law of construction dust, optimize and design spray dust reduction technology. Therefore, it is necessary to provide a new tunnel dust migration law research equipment to solve the above technical problems. Summary of the invention

[0003] The purpose of the present invention is to provide indoor test equipment for studying the law of tunnel dust migration based on intelligent control, which solves the problem in the prior art that the dust diffusion generated by the tunnel drilling and blasting method is difficult to ascertain, the construction dust cannot be linked with the spray dust suppression device, and thus the optimal spray parameters cannot be designed and summarized.

[0004] The technical solution adopted by the present invention is an indoor test equipment for studying the law of tunnel dust migration based on intelligent control. The main body is a tunnel model test device. The tunnel model test device is electrically connected to a data monitoring device, a control and analysis device, and a spray dust reduction device is also provided on the top of the tunnel model test device.

[0005] The present invention is also characterized in that:

[0006] The main body of the tunnel model test device adopts a folding structure. The main body of the tunnel model test device 1 uses the bottom plate as the base, and an anti-seepage plate is laid under the bottom plate. The bottom plate and the anti-seepage plate are connected by bolts. The anti-seepage plate is installed on the laboratory floor through the foundation reinforcement method. The two sides of the anti-seepage plate are bent upward to form a drainage channel between the two sides. The bottom plate is embedded in the drainage channel. At the exit of the tunnel model, a water retaining plate is placed on the inside of the drainage channel. The water retaining plate is vertically fixed to the bottom plate by welding to form an integral body with the main body of the tunnel model test device.

[0007] The main body of the tunnel model includes an arch-shaped steel frame, a plurality of telescopic side rods are arranged inside the steel frame perpendicular to the arch direction, and a telescopic top rod is also arranged on the top of the steel frame.

[0008] Pulleys are installed on the outside of the arch feet at two places on the face of the tunnel model test device, and drive motor No. 1 is installed between the two pulleys. The pulley is powered by drive motor No. 1 and installed in the guide rail. A fixture is installed at the exit of the tunnel model test device. A dust generator is installed in front of the tunnel face. The dust generator is connected to the powder box through a dust conveying pipe. An air connecting pipe is installed above the dust generator. One end of the air connecting pipe is connected to the dust generator, and the other end of the air connecting pipe is connected to the outside world to provide an air source for dust generation. Drive motor No. 2 is connected to the battery, powder box and dust generator through a circuit. The battery provides electrical energy to drive motor No. 2, and drive motor No. 2 provides power for the dust generator. An air duct is installed at the upper right corner of the main body of the tunnel model test device, and a blower is connected behind the air duct.

[0009] The data monitoring device is divided into a data analysis unit and a data acquisition unit. The data analysis unit is the monitoring host. The monitoring host is equipped with a host display screen. A data interface is arranged below the host display screen. A host switch is arranged below the data interface. The host switch is responsible for monitoring the opening and closing of the host. A control button is installed next to the host switch. A data storage and transmission module is installed next to the control button. The data interface connects the data acquisition unit, i.e., the monitoring probe, and the monitoring host through a data transmission line. The monitoring probe is arranged at various points inside the main body of the tunnel model. The monitoring probe includes an LED display screen, a dust collection probe, and a wind speed monitoring probe. A protective shell and a dust cover are installed on the outside of the monitoring host.

[0010] The specific structure of the spray dust suppression device is as follows: it includes several high-pressure nozzles installed close to the top of the outer wall of the tunnel, the high-pressure nozzles are connected to one end of the high-pressure water pipe, the output end of the high-pressure water pump is connected to the other end of the high-pressure water pipe to the test model, the high-pressure water pump is also electrically connected to the connecting coupling and the motor, the motor provides power for the high-pressure water pump, a battery is installed above the motor as a backup power supply, a bracket is placed above the high-pressure water pump, and a test water tank is placed, one side of the test water tank is provided with an interface for supplying water from the outside, and the other side of the test water tank is connected to the high-pressure water pump through a high-pressure water pipe.

[0011] A filter is also installed inside the high-pressure water pipe.

[0012] The blower of the tunnel model test device is connected to the control and analysis device below. The control and analysis device includes a control switch, and the control switch is connected to the control unit.

[0013] The beneficial effect of the present invention is that the indoor test equipment for studying the law of dust migration in tunnels based on intelligent control integrates four devices, namely, a tunnel model test device, a data monitoring device, a spray dust reduction device, and a control and analysis device, to form an indoor test equipment for studying the law of dust migration in tunnels based on intelligent control and optimizing dust reduction technology. By reducing the prototype tunnel by proportion, it is easier and more objective to change the boundary conditions of the tunnel indoors while meeting similar criteria, and the law of dust migration in the tunnel can be observed and studied more intuitively. Through intelligent control and integrated calculation, the spray parameters are adjusted based on different working conditions, and the test areas that cannot be reached by on-site observations are explored, and research is conducted on the law of dust diffusion in tunnels and the optimization of dust reduction technology. The precision device is designed with a dust cover to effectively extend the service life of the equipment and conduct refined research. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0015] Figure 2 It is a front structural schematic diagram of a tunnel model test device of an indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0016] Figure 3 It is a schematic diagram of the side structure of a tunnel model test device of the indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0017] Figure 4 It is a structural schematic diagram of a data monitoring device in an indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of a spray dust suppression device in an indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0019] Figure 6 It is a structural schematic diagram of the control and analysis device in the indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0020] FIG. 7( a ) is a wind speed measurement result of Example 3 of the indoor test equipment for studying the law of tunnel dust migration based on intelligent control of the present invention;

[0021] FIG. 7( b ) is a dust concentration measurement result of the indoor test equipment embodiment 3 for studying the law of dust migration in tunnels based on intelligent control of the present invention.

[0022] In the figure, 1. Tunnel model test device; 2. Data monitoring device; 3. Spray dust suppression device; 4. Control and analysis device; 101. Bottom plate; 102. Anti-seepage plate; 103. Drainage channel; 104. Water retaining plate; 105. Steel frame; 106. Telescopic side rod; 107. Dust generator; 108. Air cylinder; 109. Telescopic top rod; 1010. Blower; 1011. Fixer; 1012. Pulley; 1013. No. 1 driving motor; 1014. Guide rail; 1015. Powder box; 1016. No. 2 driving motor; 1017. Battery; 1018. Dust conveying pipe; 1019. Air connecting pipe; 201. Dust cover; 202. Protective shell; 203. Host display screen; 204. Data interface; 205. Signal processor; 206. Control button; 207. Data storage and transmission module; 208. Host switch; 209. Data transmission line; 2010. LED display screen; 2011. Dust collection probe; 2012. Wind speed monitoring probe; 301. High-pressure nozzle; 302. High-pressure water pipe; 303. Test water tank; 304. Filter; 305. Battery; 306. Motor; 307. Coupling; 308. High-pressure water pump; 401. Control switch. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the indoor test equipment for studying the dust migration law in tunnels and optimizing dust reduction technology based on intelligent control of the present invention includes a tunnel model test device 1, a data monitoring device 2, a spray dust reduction device 3, and a control and analysis device 4.

[0025] like Figure 2 , Figure 3The main body of this equipment is a tunnel model test device 1, in which the dust generation, movement diffusion and dust reduction tests are mainly carried out. The main body of the tunnel model is based on the bottom plate 101, and the bottom plate 101 is covered with an anti-seepage plate 102, which is connected in the middle by bolts. The anti-seepage plate 102 is installed on the laboratory floor by the foundation reinforcement method. Since spray dust reduction is involved in the test process, drainage measures are required to prevent the droplets from condensing into water flow and spreading in the laboratory. The droplets are sprayed out by a high-pressure nozzle, combined with dust particles in the air to form large condensates, which then fall to the bottom plate under the action of gravity. The two sides of the anti-seepage plate 102 are bent upward to form a drainage channel 103 between the two sides, and the bottom plate 101 is embedded in the drainage channel 103. At the exit of the tunnel model, a water retaining plate 104 is placed on the inside of the drainage channel 103, and the water retaining plate 104 is vertically fixed to the bottom plate 101 by welding to form an integral body with the tunnel model. The main body of the tunnel model consists of a steel frame 105, a telescopic top rod 109 and a telescopic side rod 106. According to the specific similarity ratio and the boundary conditions of the prototype tunnel, the number of each structure is adjusted to achieve the most suitable simulation environment. Pulleys 1012 are installed on the outer sides of the two arch feet of the tunnel model face, and a No. 1 drive motor 1013 is installed between the two pulleys. In order to adjust the model length at any time and facilitate the dust migration test under various working conditions, the main body of the tunnel model adopts folding operation. The No. 1 drive motor 1013 provides power to the pulley 1012, so that the tunnel model can be folded or extended at any time. In order to prevent the pulley 1012 from derailing and causing the model installation position to deviate, the pulley 1012 is installed on the guide rail 1014. A fixture 1011 is installed at the model exit to provide braking force for the model to fold and unfold. A dust generator 107 is installed in front of the tunnel face. When the No. 1 drive motor 1013 drives the model body to move to the face through the guide rail 1014, the dust generator 107 is connected to the model body through the buckle bolts to form a closed space and provide a dust source for the test operation. The dust generator 107 is connected to the powder box 1015 through the dust conveying pipe 1018. An air connecting pipe 1019 is installed above the dust generator 107, one end of the air connecting pipe 1019 is connected to the dust generator 107, and the other end of the air connecting pipe 1019 is connected to the outside world, thereby providing an air source for dust generation. The No. 2 driving motor 1016 is connected to the battery 1017, the powder box 1015 and the dust generator 107 through a circuit. The battery 1018 provides electrical energy to the No. 2 driving motor 1016, and the No. 2 driving motor 1016 provides power to the dust generator 107, prompting the dust generator 107 to generate the initial power for the dust movement. The air duct 108 is installed in the upper right corner of the model body, and the position can also be adjusted at any time according to the test needs. The air duct 108 is connected to the blower 1010.

[0026] like Figure 4, the data monitoring device 2 is divided into a data analysis unit and a data acquisition unit. The data analysis unit is the monitoring host, which is mainly responsible for integrating the physical and chemical properties data of dust monitored by the dust collection probe 2011 and the airflow change data monitored by the wind speed monitoring probe 2012, that is, the data analysis unit will adjust the data collected by these different probes to ensure that they can be aligned on the same time axis and have the same timestamp or time label. Then the raw data needs to be preprocessed, including but not limited to data cleaning, denoising, interpolation, outlier processing, etc. This helps to ensure data quality and accuracy and prepare for subsequent analysis. Then feature extraction is performed on the physical and chemical properties of dust and airflow change data to extract representative and informative features from the raw data, such as the average value, maximum value, minimum value of dust concentration, frequency and amplitude of airflow change, etc. Finally, the data analysis unit will generate the results of the data analysis and output them in the form of reports, charts, numerical indicators, etc. These results can help users understand the changes in dust and airflow, so as to take corresponding control and management measures. The monitoring host is equipped with a host display screen 203, and a data interface 204 for various dust and wind speed monitoring variables is installed below the host display screen 203. A host switch 208 is installed below the data interface 204, which is responsible for the opening and closing of the monitoring host. A control button 206 is installed on the right side of the host switch 208, and the parameter settings of the monitoring host can be changed through the control button 206, such as (dust sampling time interval, number of sampling channels, sampling rate, sensitivity, etc.). A data storage and transmission module 207 (transmission tools such as USB flash drive) is installed on the right side of the control button 206. The data interface 204 connects the data acquisition unit, i.e., the monitoring probe, and the monitoring host through a data transmission line 209, and transmits the collected information data from the monitoring probe to the monitoring host for further analysis and processing. A protective shell 202 and a dust cover 201 are installed on the outside of the monitoring host to protect the interior from dust. The monitoring probe can be placed at various points inside the main body of the tunnel model. According to experimental needs, multiple sets of monitoring hosts and monitoring probes can be configured for test measurements. The monitoring probe consists of an LED display screen 2010 (real-time display of monitoring information), a dust collection probe 2011, and a wind speed monitoring probe 2012. The monitoring probe casing is dust-proofed to avoid dust pollution and shortening the service life of the instrument.

[0027] like Figure 5 A high-pressure water pipe 302 is closely attached to the outer wall of the tunnel and a plurality of high-pressure nozzles 301 are installed on the top of the model. The spray dust suppression device 3 is connected to the high-pressure nozzles 301 on the top arch of the main body of the tunnel model through the high-pressure water pipe 302.

[0028] The high-pressure water flow in the tunnel is sprayed out through the high-pressure nozzle 301 at the end of the high-pressure water pipe 302 to form a spray. According to the test needs and the arrangement of multiple working conditions, the number of high-pressure nozzles 301 and the spray angle can be increased or decreased to change the atomization effect. The output end of the high-pressure water pump 308 of the spray dust suppression device 3 is connected to the high-pressure water pipe 302 and leads to the test model. The high-pressure water pump 308 is also electrically connected to the connecting coupling 307 and the motor 306. The motor 306 provides power for the high-pressure water pump 308. The motor 306 is connected to the outside world through the circuit to take power for operation, and a battery 305 is installed on the top as a backup power supply. A bracket is placed above the high-pressure water pump 308 to place the test water tank 303. An interface is left on one side of the test water tank 303 for water delivery from the outside, and the other side of the test water tank 303 is connected to the high-pressure water pump 308 through a water pipe. A filter 304 is installed in the middle of the water pipe to filter impurities and prevent clogging of the high-pressure water pump 308.

[0029] like Figure 6 As shown, the blower 1010 of the tunnel model test device 1 is connected to the control and analysis device 4, which includes a control switch 401 and various master control circuits. The control switch 401 controls the indoor test equipment. Through the control unit, the length and position of the tunnel body, the ventilation parameters of the blower 1010, and the droplet parameters of the spray dust suppression device 3 can be changed, and the dust concentration, dust particle size distribution, dust generation, dust dispersion and other dust emission parameters of the dust generator can be adjusted in real time.

[0030] Example 1

[0031] The present invention is an indoor test equipment for studying the tunnel dust migration law that can be controlled. The main body is a tunnel model test device 1. The tunnel model test device 1 is electrically connected to a data monitoring device 2 and a control and analysis device 4. A spray dust suppression device 3 is also provided on the top of the tunnel model test device 1.

[0032] The main body of the tunnel model test device 1 adopts a folding structure. The main body of the tunnel model test device 1 uses a bottom plate 101 as a base, and an anti-seepage plate 102 is laid under the bottom plate 101. The bottom plate 101 and the anti-seepage plate 102 are connected by bolts. The anti-seepage plate 102 is installed on the laboratory floor through a foundation reinforcement method. The two sides of the anti-seepage plate 102 are bent upward to form a drainage channel 103 between the two sides. The bottom plate 101 is embedded in the drainage channel 103. At the exit of the tunnel model, a water retaining plate 104 is placed on the inside of the drainage channel 103. The water retaining plate 104 is vertically fixed to the bottom plate 101 by welding, and forms an integral body with the main body of the tunnel model test device 1.

[0033] The main body of the tunnel model includes an arch-shaped steel frame 105 , a plurality of telescopic side rods 106 are arranged inside the steel frame 105 perpendicular to the arch direction, and a telescopic top rod 109 is arranged on the top of the steel frame 105 .

[0034] Pulleys 1012 are installed on the outer sides of the arch feet at two locations of the tunnel face of the tunnel model test device 1, and a No. 1 drive motor 1013 is installed between the two pulleys. The No. 1 drive motor 1013 provides power to the pulley 1012, and the pulley 1012 is installed in the guide rail 1014. A fixture 1011 is installed at the exit of the tunnel model test device 1, and a dust generator 107 is installed in front of the tunnel face. The dust generator 107 is connected to the powder box 1015 through a dust conveying pipe 1018, and an air connecting pipe 101 is installed above the dust generator 107. 9. One end of the air connecting pipe 1019 is connected to the dust generator 107, and the other end of the air connecting pipe 1019 is connected to the outside to provide an air source for dust generation. The No. 2 driving motor 1016 is connected to the battery 1017, the powder box 1015 and the dust generator 107 through a circuit. The battery 1018 provides power for the No. 2 driving motor 1016, and the No. 2 driving motor 1016 provides power for the dust generator 107. The air duct 108 is installed at the upper right corner of the main body of the tunnel model test device 1, and the air duct 108 is connected to the blower 1010.

[0035] The data monitoring device 2 is divided into a data analysis unit and a data acquisition unit. The data analysis unit is the monitoring host. The monitoring host is equipped with a host display screen 203. A data interface 204 is arranged below the host display screen 203. A host switch 208 is arranged below the data interface 204. The host switch 208 is responsible for monitoring the opening and closing of the host. A control button 206 is installed next to the host switch 208. A data storage and transmission module 207 is installed next to the control button 206. The data interface 204 connects the data acquisition unit, i.e., the monitoring probe, and the monitoring host through a data transmission line 209. The monitoring probe is arranged at various points inside the main body of the tunnel model. The monitoring probe includes an LED display screen 2010, a dust collection probe 2011, and a wind speed monitoring probe 2012. A protective shell 202 and a dust cover 201 are installed outside the monitoring host.

[0036] The specific structure of the spray dust suppression device 3 is: it includes a plurality of high-pressure nozzles 301 installed close to the top of the outer wall of the tunnel, the high-pressure nozzle 301 is connected to one end of the high-pressure water pipe 302, the output end of the high-pressure water pump 308 is connected to the other end of the high-pressure water pipe 302 to the test model, the high-pressure water pump 308 is also electrically connected to the connecting coupling 307 and the motor 306, the motor 306 provides power for the high-pressure water pump 308, a battery 305 is installed above the motor 306 as a backup power supply, a bracket is placed above the high-pressure water pump 308, and a test water tank 303 is placed. An interface is reserved on one side of the test water tank 303 for supplying water from the outside, and the other side of the test water tank 303 is connected to the high-pressure water pump 308 through a high-pressure water pipe 302.

[0037] Example 2

[0038] The present invention is an indoor test equipment for studying the tunnel dust migration law that can be controlled. The main body is a tunnel model test device 1. The tunnel model test device 1 is electrically connected to a data monitoring device 2 and a control and analysis device 4. A spray dust suppression device 3 is also provided on the top of the tunnel model test device 1.

[0039] The main body of the tunnel model test device 1 adopts a folding structure. The main body of the tunnel model test device 1 uses a bottom plate 101 as a base, and an anti-seepage plate 102 is laid under the bottom plate 101. The bottom plate 101 and the anti-seepage plate 102 are connected by bolts. The anti-seepage plate 102 is installed on the laboratory floor through a foundation reinforcement method. The two sides of the anti-seepage plate 102 are bent upward to form a drainage channel 103 between the two sides. The bottom plate 101 is embedded in the drainage channel 103. At the exit of the tunnel model, a water retaining plate 104 is placed on the inside of the drainage channel 103. The water retaining plate 104 is vertically fixed to the bottom plate 101 by welding, and forms an integral body with the main body of the tunnel model test device 1.

[0040] The main body of the tunnel model includes an arch-shaped steel frame 105 , a plurality of telescopic side rods 106 are arranged inside the steel frame 105 perpendicular to the arch direction, and a telescopic top rod 109 is arranged on the top of the steel frame 105 .

[0041] Pulleys 1012 are installed on the outer sides of the arch feet at two locations of the tunnel face of the tunnel model test device 1, and a No. 1 drive motor 1013 is installed between the two pulleys. The No. 1 drive motor 1013 provides power to the pulley 1012, and the pulley 1012 is installed in the guide rail 1014. A fixture 1011 is installed at the exit of the tunnel model test device 1, and a dust generator 107 is installed in front of the tunnel face. The dust generator 107 is connected to the powder box 1015 through a dust conveying pipe 1018, and an air connecting pipe 101 is installed above the dust generator 107. 9. One end of the air connecting pipe 1019 is connected to the dust generator 107, and the other end of the air connecting pipe 1019 is connected to the outside to provide an air source for dust generation. The No. 2 driving motor 1016 is connected to the battery 1017, the powder box 1015 and the dust generator 107 through a circuit. The battery 1018 provides power for the No. 2 driving motor 1016, and the No. 2 driving motor 1016 provides power for the dust generator 107. The air duct 108 is installed at the upper right corner of the main body of the tunnel model test device 1, and the air duct 108 is connected to the blower 1010.

[0042] Example 3

[0043] Aiming at the dust pollution problem during the construction period of a bypass tunnel of a hydropower station in Sichuan, we used this equipment to conduct indoor model tests and summarized the migration law of the tunnel dust.

[0044] The tunnel model is as follows: total length 6m, cross-sectional dimensions 1.4m×0.7m (width×height). The wind tube is located on the right spandrel, with a diameter of 0.12m, about 1m away from the face, and a wind speed of 6m / s.

[0045] The monitoring plan is as follows:

[0046] This test intends to use three measuring lines for monitoring, one close to the wind tube, one in the middle, and one away from the wind tube. The three measuring lines are 0.2m, 0.7m, and 1.2m away from the right wall. Each measuring line includes 5 measuring points, which are 0.5m, 1m, 2m, 4m, and 6m away from the face. The height of the measuring point from the ground is 0.15m, simulating the breathing height of the human body. After the tunnel dust diffusion is stable, the measuring point starts to record the dust concentration, and the dust collection time is 5mins.

[0047] The monitoring results are shown in Figure 7(a) and Figure 7(b). It can be seen from Figure 7(a) that the wind speed on the three measuring lines is related to the distance from the tunnel face. When the wind flow field inside the model tunnel is stable, the wind speed on the tunnel measuring line shows an overall downward trend. The farther the measuring point is from the tunnel face, the smaller the wind speed. On the same measuring line, as the distance from the tunnel face increases, the wind speed of the measuring point increases first and then decreases, but it does not affect the overall downward trend.

[0048] As can be seen from Figure 7(b), under the combined effect of wind flow and the gravity of dust particles, the dust released from the working face of the model tunnel continues to move and settle toward the tunnel exit, causing the dust concentration to decrease along the way; the dust that has not settled or been discharged randomly diffuses in the tunnel, causing the dust concentration of the three measuring lines to increase rapidly and reach a peak in a short period of time. The figure shows that the dust concentration of the three measuring lines reaches its peak almost 2m away from the working face, indicating that the eddy current accumulates here, causing the dust agglomerates to be captured and difficult to be discharged quickly. At the same time, since the wind tube is installed on the arch shoulder on the left side of the tunnel, the wind flow generated will carry the dust near the face to the middle and right side, causing the dust concentration of the two measuring lines on the right side of the tunnel to reach the highest point faster than the left measuring line.

[0049] In summary, this equipment realizes flexible disassembly and detection of tunnel dust, and can monitor dust concentration at different locations more easily. Due to limited test energy, wind speed and CO data could not be monitored, but this test has fully demonstrated the various functions of this equipment and can provide reference.

Claims

1. Indoor test equipment for studying the law of tunnel dust migration based on intelligent control, characterized in that: The main body is a tunnel model test device (1), which is electrically connected to a data monitoring device (2) and a control and analysis device (4), and a spray dust suppression device 3 is also provided on the top of the tunnel model test device (1).

2. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 1 is characterized in that: The main body of the tunnel model test device (1) adopts a folding structure. The main body of the tunnel model test device (1) uses a bottom plate (101) as a base. An anti-seepage plate (102) is laid under the bottom plate (101). The bottom plate (101) and the anti-seepage plate (102) are connected by bolts. The anti-seepage plate (102) is installed on the laboratory floor by a foundation reinforcement method. Both sides of the anti-seepage plate (102) are bent upward to form a drainage channel (103) between the two sides. The bottom plate (101) is embedded in the drainage channel (103). At the exit of the tunnel model, a water retaining plate (104) is placed inside the drainage channel (103). The water retaining plate (104) is vertically fixed to the bottom plate (101) by welding and forms an integral body with the main body of the tunnel model test device (1).

3. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 2 is characterized in that: The tunnel model body comprises an arch-shaped steel frame (105), a plurality of telescopic side rods (106) are arranged inside the steel frame (105) perpendicular to the arch direction, and a telescopic top rod (109) is arranged on the top of the steel frame (105).

4. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 3 is characterized in that: Pulleys (1012) are installed outside the arch feet at two locations of the tunnel face of the tunnel model test device (1), a No. 1 drive motor (1013) is installed between the two pulleys, and the No. 1 drive motor (1013) provides power to the pulley (1012), and the pulley (1012) is installed in the guide rail (1014). A fixture (1011) is installed at the exit of the tunnel model test device (1), and a dust generator (107) is installed in front of the tunnel face. The dust generator (107) is connected to a powder box (1015) through a dust conveying pipe (1018), and an air connecting pipe (1011) is installed above the dust generator (107). 9), one end of the air connection pipe (1019) is connected to the dust generator (107), and the other end of the air connection pipe (1019) is connected to the outside to provide an air source for dust generation. The No. 2 driving motor (1016) is connected to the battery (1017), the powder box (1015) and the dust generator (107) through a circuit. The battery (1018) provides electric energy for the No. 2 driving motor (1016), and the No. 2 driving motor (1016) provides power for the dust generator (107). A wind tube (108) is installed at the upper right corner of the main body of the tunnel model test device (1), and the wind tube (108) is connected to the blower (1010).

5. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 1 is characterized in that: The data monitoring device (2) is divided into a data analysis unit and a data collection unit. The data analysis unit is a monitoring host. The monitoring host is provided with a host display screen (203). A data interface (204) is provided below the host display screen (203). A host switch (208) is provided below the data interface (204). The host switch (208) is responsible for monitoring the opening and closing of the host. A control button (206) is provided next to the host switch (208). A data storage and transmission module (207) is provided next to the control button (206). The data interface (204) is connected to the data collection unit, i.e., a monitoring probe, and the monitoring host via a data transmission line (209). The monitoring probe is provided at various points inside the main body of the tunnel model. The monitoring probe includes an LED display screen (2010), a dust collection probe (2011), and a wind speed monitoring probe (2012). A protective shell (202) and a dust cover (201) are provided outside the monitoring host.

6. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 1 is characterized in that: The specific structure of the spray dust suppression device (3) is as follows: it comprises a plurality of high-pressure nozzles (301) installed close to the top of the outer wall of the tunnel, the high-pressure nozzles (301) are connected to one end of a high-pressure water pipe (302), the output end of a high-pressure water pump (308) is connected to the other end of the high-pressure water pipe (302) and leads to the test model, the high-pressure water pump (308) is also electrically connected to a connecting coupling (307) and an electric motor (306), the electric motor (306) provides power for the high-pressure water pump (308), a battery (305) is installed above the electric motor (306) as a backup power source, a bracket is arranged above the high-pressure water pump (308), and a test water tank (303) is placed, one side of the test water tank (303) is provided with an interface for water supply from the outside, and the other side of the test water tank (303) is connected to the high-pressure water pump (308) through a high-pressure water pipe (302).

7. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 6 is characterized in that: A filter (304) is also installed inside the high-pressure water pipe (302).

8. The indoor test equipment for studying the law of tunnel dust migration based on intelligent control according to claim 6 is characterized in that: The blower (1010) of the tunnel model test device (1) is connected to a control and analysis device (4), which comprises a control switch (401) connected to a control unit.

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