CN117629303A - A tunnel dust concentration measurement and spray dust removal test system and method - Google Patents

Abstract

The invention relates to a tunnel dust concentration measurement and spray dust removal test system and a method, wherein the system comprises the following steps: the test box comprises a box body, a box body supporting column, a front panel, a back panel, an inner partition board, a crank handle, dust scrapes, sealing rubber plugs and shading cloth; the dust generating device comprises a dust box and a blower; the measuring device comprises a camera, light supplementing equipment, a high-precision humidity detector, light measuring equipment, a computer in communication connection with the camera and a handheld dust concentration detector; the spray dust-settling device comprises a water tank, a water pump and a spray head; the dust collecting device comprises an exhaust fan, a filtering unit and a dust collecting box. Compared with the prior art, the invention realizes non-invasive measurement of dust concentration, realizes the replacement of background images and the adjustment of the distance between the background images and a camera lens, realizes the adjustment and quantification of illumination intensity, realizes the quantitative adjustment and accurate measurement of humidity, realizes the quantitative throwing and recovery of dust, and realizes the simulation of the spraying dust-settling effect in a tunnel.

Description

A tunnel dust concentration measurement and spray dust removal test system and method

Technical field

The invention relates to the technical field of tunnel dust monitoring and dust reduction, and in particular to a tunnel dust concentration measurement and spray dust removal test system and method.

Background technique

In the context of the traditional drilling and blasting method with high noise and vibration, the high cost of shield tunneling method, and poor adaptability to unfavorable geology; the cantilever boring machine integrates cutting, loading, transportation and dust removal technology and has been widely used in urban underground space construction. Under construction. However, cantilever boring machines often continue to produce large amounts of dust when facing hard rock, which affects the visibility near the tunnel face, thus affecting construction accuracy and efficiency. It can also cause damage to the health of operators, which may cause adverse consequences. Personal injury and economic loss. Therefore, it is of great significance to carry out relevant research on monitoring methods of dust concentration during the excavation process of cantilever boring machines.

At present, most of the dust concentration monitoring methods and model devices use ultrasonic method or light scattering method, and the relatively new strain method. Some existing patents have made related explorations into the image method, but there are still shortcomings. For example, the invention patent CN116223325A discloses a measurement method that uses a dust fan to drive gas containing dust to a strain gauge and determines the dust content through the change in resistance value of the strain gauge. The utility model patent CN216847379U discloses a method that uses a laser to detect the dust concentration of the subject. Detection equipment, etc. In the invention patent CN115468885A, the laser method is used for measurement. The detection light path is isolated from the air flow to be measured, which reduces the possibility of being contaminated by dust particles. The utility model patent CN219120191U uses the image method to measure the dust after it enters the cavity. The above-mentioned patents use different methods to measure dust concentration and enhance the accuracy or anti-interference ability in different aspects. However, they can all be classified as intrusive measurements, which interfere with the distribution of dust in space and may affect further subsequent research. Non-invasive image methods such as the invention patent CN116559037A proposes a dynamic measurement method of high-speed cameras and dust concentration samplers for dust concentration in open-pit mine explosion areas. The invention patent CN110532511A performs gray-rank co-occurrence matrix and rotation on several sets of standard concentration gradient dust images. The calculation of inertia constructs a mathematical model between dust concentration and rotational inertia. The invention patent CN102445409A uses a camera to collect dust images in livestock and poultry breeding environment monitoring and analyzes to obtain a relationship model between dust concentration and image brightness parameters. The invention patent CN112945511A studies dust. The simulation mode and environmental experimental properties and sprinkler device effects occur. The above-mentioned patent uses different methods, such as image grayscale, brightness, etc., to regress dust concentration to obtain a relationship model, and partially explores the effect of the spray device. However, the background is relatively fixed, and the impact of measurement distance on image features is not explored. The image characteristics under different lighting conditions, different humidity and complex backgrounds were not explored, nor was there a more in-depth study on the effect of spray dust reduction.

Contents of the invention

The purpose of the present invention is to provide a tunnel dust concentration measurement and spray dust removal test system and method to overcome the above-mentioned shortcomings of the prior art, realize non-invasive measurement of dust concentration, and realize background image replacement and camera lens interaction. Distance adjustment realizes the adjustment and quantification of light intensity, realizes quantitative adjustment and accurate measurement of humidity, realizes quantitative placement and recovery of dust, realizes the simulation of spray dust reduction effect in the tunnel, and realizes dust overflow control.

The object of the present invention can be achieved through the following technical solutions:

The dust concentration was measured using the image method, and the impact of the measurement distance on the image was demonstrated. At the same time, humidified air was introduced through a humidifier to change the humidity to study the impact, and the spray dust reduction effect was studied by replacing the spray nozzle, as well as the The background image on the internal movable partition can be used to perform measurement calibration under complex backgrounds, and the measurement calibration under complex light source conditions can be achieved by changing the shading state and LED light source state.

The invention provides a tunnel dust concentration measurement and spray dust removal test system, which includes:

The test chamber includes a box body, box support pillars, front panel, back panel, inner partition, hand crank, dust scraper, sealing rubber plug, and light-shielding cloth; the box body is located on the box support pillars; the front panel, back panel The plate is sealingly connected to the box; the inner partition is arranged in the box, and the surroundings of the inner partition are sealingly connected to the box. Furthermore, the contact surface between the inner partition and the box is provided with a rubber ring, or the inner partition and the box Apply Vaseline on the seams after the body is in direct contact; the hand crank passes through the side opening of the box, and the hand crank and the box are sealed and connected with a rubber ring; the dust scraper passes through the opening of the front panel, and the dust scraper is sealed with the front panel The connection is sealed with a rubber ring; the sealing rubber plug is plugged into the top opening of the box; the light-shielding cloth is placed outside the box; the light-shielding cloth is covered outside the box to weaken the influence of ambient light and facilitate regular operation under simple lighting conditions Explore that complex ambient light can be introduced as an influencing factor after demolition;

The dust generating device includes a dust box and a blower. The dust box and the blower are connected; the blower blows the dust in the dust box into the box through the blower air inlet;

The humidity control device includes a water tank, a humidifier, and a Bluetooth humidity monitor; the water tank and the humidifier are connected through a first hose; the steam outlet of the humidifier is connected to the socket accessory through the first hose; the Bluetooth humidity monitor is adhered to the box inner wall;

The measurement device includes a camera, fill-light equipment, high-precision humidity detector, photometry equipment, computer connected to the camera, and handheld dust concentration detector; the camera is located outside the cabinet, and the fill-light equipment is located in the front of the cabinet. On the panel, the light filling device is glued to the front panel, and the power supply line comes out of the opening on the contact surface between the light source and the box; the detection components of the high-precision humidity detector, light intensity detector, and handheld dust concentration detector are all equipped with On the hand crank, further, the detection parts of the high-precision humidity detector, light intensity detector, and handheld dust concentration detector are respectively placed at the upper and lower diameters of the hand crank, and the power supply line and the reading part of the handheld dust concentration detector are Go out from the hollow part of the hand crank handle; preferably, the light measuring device is a light intensity detector, and the fill light device is a ring-shaped LED light source;

The spray dust reduction device includes a water tank, a water pump, and a nozzle; the water tank and the water pump are connected through a second hose, the water pump is connected to the socket fitting through the second hose, and the nozzle is connected to the socket fitting and is located inside the box;

The dust collection device includes an exhaust fan, a filter unit, and a dust box; the air inlet of the exhaust fan is connected to the air outlet of the box, the air outlet of the exhaust fan is connected to the filter unit, and the dust discharge port of the filter unit is connected to the dust box. .

Furthermore, the box body is a transparent acrylic cylinder, and the front panel and back panel are both acrylic discs corresponding to the size of the cylinder opening;

There is a circumferential groove on the joint surface of the front panel, the back plate and the cylinder. There is a sealing ring on the circumferential groove. The upper opening of the sealing ring is provided with an outward upper opening reverse edge, and the upper opening reverse edge is provided with an air hole. The lower opening of the sealing ring is equipped with a hook, which matches the lower opening of the front panel and the back plate, and can achieve sealing when the hook is locked; the front panel is provided with a hole, and the dust scraper is placed in the hole, and the dust scraper There is a rubber ring between the box and the hole; there are air inlets and air outlets on the box;

There is a hole on one side of the box, and a hand crank is inserted into the hole. The connection between the hand crank and the box is sealed with rubber; the hand crank includes three hollow handles with a casing structure that are threaded through the box and each with a hollow handle. There are three semi-circular rings connected by the handle. The hollow handle is outside the box and the semi-circular ring is inside the box. The hollow handle can drive the semi-circular ring to rotate. The hand crank is used to connect photometric equipment, high-precision humidity detectors, and hand-held The dust concentration detector moves to the designated position for measurement;

The inner partition is a transparent acrylic circular plate, which is expanded into a triangular cone shape on all sides to stabilize itself in the cylinder. A rubber sealing ring or Vaseline is applied on the bottom side of the cone for sealing. When the backing plate is used as a background image carrier , the inner partition is used to change the dust space volume and seal; when the back plate is not used as a background image carrier, an image is pasted on one side of the inner partition as the background to be measured, and the dust distribution space volume in the box can be changed by changing the position of the partition. And the distance between the background and the camera to be measured, the box space where dust is distributed is the dust chamber, and the space behind the inner partition without dust is the isolation chamber.

Furthermore, an air inlet check valve is provided between the air inlet of the blower and the air outlet of the box. The air inlet check valve is used to provide a relatively stable environment during measurement and prevent dust from being poured back into the blower; the dust box is located at The air inlet of the blower is equipped with a dust sealing baffle. The dust sealing baffle separates the dust to be thrown in the dust box from the blower before starting the test, and facilitates the addition and subtraction of materials; the dust generating device is composed of the blower power and blast Time controls the dust uniformity, and the average dust concentration in the box is controlled by the amount of dust in the dust box.

Further, the humidifier draws water from the water tank through the first hose, atomizes it into water mist, and sends it to the box at the sealing rubber plug through the pipeline; the sealing rubber plug can be sealed with the humidification pipe by replacing the socket accessories; Bluetooth humidity monitoring The instrument is used to monitor the humidity in the box in real time to determine whether to continue to introduce water mist; through the cooperation of the Bluetooth humidity monitor and the humidifier, the humidity control and stability inside the box can be achieved.

Further, the camera is used to take images inside the box; the light filling device is adhered to the inner wall of the box through strong glue; when the image needs to be measured on the inner partition, the photometric device is connected to the semicircular ring, and the high-precision humidity detector is connected to the semicircular ring. The semi-circular rings are connected, and the hollow handle is shaken to make the semi-circular rings rotate. The photometric equipment is used to measure the intensity of the light source and the intensity of the light in front of the background. The high-precision humidity detector measures the humidity in the dust chamber and the inner partition in the box respectively. The humidity in front of the backplane; when the image needs to be measured on the backplane, the high-precision humidity detector measures the humidity in the dust chamber in the box and the humidity in front of the backplane respectively; the handheld dust concentration detector includes a probe component and a display processing component. The probe part is connected to the semi-circular ring, the display processing part is located outside the box, the data transmission line is passed from the hollow handle to the display processing part, the handheld dust concentration detector is used for measurement and calibration under various dust conditions; computer Used to receive and process dust image information collected from cameras, and perform data analysis and fitting.

Further, the spray dust reduction system explores the spray dust reduction effect of different factors by adjusting the shape of the nozzle, the pressure and flow rate of the water pump to adjust the particle size and range of the sprayed droplets; the nozzle is installed in a sealing rubber stopper, and the water pump passes through the second hose Connected; the water pump can adjust the spray by adjusting the water pressure and flow rate; the water pump obtains the liquid used to form droplets from the water tank.

Further, the exhaust fan is connected to the air outlet at the bottom of the box, and a sealing baffle is provided between the exhaust fan and the air outlet; the filter unit is connected to the air outlet of the exhaust fan to filter the extracted dust to avoid polluting the environment; dust collection The box is connected to the filter unit and is used to collect the filtered dust for weighing and re-injecting the dust for testing; the dust collection device also includes an optional connected hose and dust suction head. When the dust collection is difficult to extract directly, use The hose and vacuum head are used to vacuum the designated parts in the box.

Furthermore, the box body is an integrally formed cylinder or a spliced cylinder sealed by glass glue; sealing measures are provided at each opening of the box, such as one-way valves and sealed partitions. The air tightness needs to be checked before the test begins.

The invention also provides a method for measuring tunnel dust concentration, which includes the following steps:

A1: Check the air tightness of the test chamber. The space in the box where dust is distributed is the dust chamber. The space behind the inner partition without dust is the isolation chamber. Determine the length of the dust chamber, move the inner partition to the designated position, and paste the background image. Select the type and quality of dust to be put in, put it into the dust box, and cover it with a light-shielding cloth;

A2: Turn on the Bluetooth humidity monitor of the humidity control device, determine the initial humidity to be selected, and then choose whether to pass in the water vapor generated by the humidifier. If you need to pass in the water vapor, you must disconnect the humidifier and the sealing rubber plug after passing in the water vapor. Plug the equipment hole on the rubber plug, open the handheld dust concentration detector and crank it to multiple positions in the box for zero calibration or initial concentration measurement. If the initial dust concentration in the box is significantly different from the actual observation, the box needs to be opened. body cleansing;

A3: Turn on the fill light equipment of the measuring device, use a camera to take a picture of the background, and shake the hand crank with the photometric equipment to the designated position in front of the background to measure the initial light intensity;

A4: Open the blower of the dust generating device and the dust sealing baffle, blow the dust into the box through the air inlet one-way valve, wait until the dust is blown out and continue blowing, then close the dust box partition, and wait until the dust condition in the box is stable. ;

A5: Use a camera to take a background picture with dust. If there is dust attached to the front panel that affects image collection, you need to use a dust scraper to scrape out the camera window before shooting. Select the part of the background image with a relatively uniform dust concentration as the fitting part;

A6: Open the handheld dust concentration detector, shake the hand crank to make the detection end reach the fitting position, measure the dust concentration at the fitting part as the fitting concentration; open the photometric equipment, shake the hand crank to make the photometric device reach the fitting position position, measure the light intensity as the light intensity after dust; turn on the high-precision humidity detector, shake the hand crank to make the high-precision humidity detector reach the fitting position, and measure the humidity as the humidity after dust;

A7: Turn on the exhaust fan, open the sealing partition, and exhaust dust inside the box. After there is no obvious dust in the box, close it. If there is still dust attached to the inner wall of the box that cannot be extracted through exhaust, open the front panel or back panel and wipe it manually. Collect the extracted dust for reuse;

A8: Perform image processing on the collected before and after dust images of the fitting part, and record the corresponding data of initial light intensity and post-dust light intensity, initial humidity and post-dust humidity, initial dust concentration and fitting concentration;

A9: After changing the dust concentration, repeat steps A1 to A8 to achieve dust concentration calibration fitting under one working condition, and establish a concentration model under a single working condition between the preprocessed image in A8 and the corresponding data;

A10: After changing the initial light intensity, dust chamber length, background image, etc., repeat steps A1 to A9 to achieve multi-working conditions dust concentration calibration and obtain a dust concentration model in a complex environment.

The invention also provides a spray dust removal test method, which includes the following steps:

B1: Select the spray nozzle, spray pressure, flow rate and spray time or intermittent spray scheme to be used;

B2: Before the test, open the photometric equipment, shake the hand crank to allow the photometric equipment to reach the measurement site, and measure the light intensity as the light intensity after dust; open the high-precision humidity detector, shake the hand crank to allow the high-precision humidity detector to reach the measurement site , measure the humidity as the post-dust humidity, and input the obtained data into the concentration model obtained from the tunnel dust concentration measurement test to obtain the initial dust concentration in the box;

B3: Use the spray data and plan selected in B1 to carry out regular spray dust removal, and wait for a period of time to wait for the dust state in the box to return to uniformity;

B4: Open the photometric equipment, shake the hand crank to make the photometric equipment reach the measuring position, measure the light intensity as the light intensity after dust removal; open the high-precision humidity detector, shake the hand crank to make the high-precision humidity detector reach the fitting position, Measure the humidity as the humidity after dust removal, and input the obtained data into the concentration model obtained from the tunnel dust concentration measurement test to obtain the dust concentration in the test chamber after dust removal;

B5: If using the intermittent spray scheme, repeat steps B3 and B4;

B6: Turn on the exhaust fan, open the sealing partition, and exhaust dust inside the box. After there is no obvious dust in the box, close it. If there is still dust attached to the inner wall of the box that cannot be extracted through exhaust, open the front panel or back panel and wipe it manually. Collect the extracted dust for reuse;

B7: Compare the initial dust concentration and the dust concentration after dust removal to obtain the dust removal effect, and analyze the effects of water consumption and pressure.

Compared with the prior art, the present invention has the following advantages:

(1) Achieve non-invasive measurement of dust concentration: The present invention uses image methods to calibrate and fit the image characteristics and dust concentration of dust in space to achieve long-distance, non-perturbing measurement.

(2) Realize background image replacement and distance adjustment between the camera lens: The tunnel dust concentration measurement test device of the present invention can replace the image content on the inner partition or backboard as the background as needed to achieve complex background verification. The position of the inner partition of the box can be adjusted steplessly to explore the superposition effect of dust spaces with different depths of field on image features.

(3) Realize the adjustment and quantification of light intensity: The box of the present invention is covered with light-shielding material to weaken the influence of ambient light. The light source adopts LED light source to select different light intensities. It is also equipped with a light intensity detector for measuring light source intensity and different light intensity. Background light intensity under dust concentration.

(4) Achieve quantitative adjustment and accurate measurement of humidity: The humidity control system of the present invention can quantitatively control the humidity conditions in the box, and obtain accurate humidity readings at the intended measurement location through a high-precision humidity detector, reducing the unevenness of humidity in space. In order to explore the influence of humidity on the image characteristics of dust concentration.

(5) Achieve quantitative dust injection and recovery: The dust box of the dust generating device of the present invention can collect the dust collected at the construction site, and can carry out weighing, quantification and particle size analysis during the preparation process before the test. The dust collection device of the present invention can evacuate the dust in the box after the test is completed and collect it in the dust collection box for the next test, and can obtain the test loss information by weighing.

(6) Realize the simulation of the spray dust reduction effect in the tunnel: The spray dust reduction device of the present invention can be used with non-invasive measurement methods of dust concentration to conduct quantitative comparisons of the spray dust reduction effects of different spray parameters.

(7) Realize dust overflow control: The present invention requires the air tightness of the cylinder to be inspected before the test. During the test, it is required to keep all sealed parts working. After the test, exhaust dust removal is used to extract the free dust in the box and filter and collect it to achieve There is no free dust spillage leading to environmental pollution during the entire stage.

Description of drawings

Figure 1 is a schematic diagram of the tunnel dust concentration measurement and spray dust removal test system.

Figure 2 is a schematic diagram of the model structure of the test chamber.

Figure 3 is a schematic diagram of the measurement device.

Figure 4 is a schematic diagram of the spray dust suppression device.

Figure 5 is a schematic diagram of the dust collection device

Figure 6 is a schematic diagram of the partition structure inside the box.

Figure 7 is a schematic diagram of the dust scraper structure on the front panel of the box.

Figure 8 is a schematic diagram of the structure and measuring points of the box in the non-measurement state.

Figure 9 is a schematic diagram of the box measurement state structure and measuring points (taking the humidity measurement state as an example).

Figure 10 is a schematic view of the front of the measuring point in the non-measuring state of the box.

Figure 11 is a schematic diagram of the sealing partition structure.

Reference signs: 1-1, cabinet, 1-2, cabinet support column, 1-3, front panel, 1-4, back panel, 1-5, inner partition, 1-6, hand crank, 1-7. Dust scraper, 1-8. Humidity and spray hole, 1-9. Air inlet hole, 1-10. Air outlet hole, 1-11. Sealing partition, 1-12. Sealing rubber plug, 1- 13. Shade cloth, 1-14. Air inlet check valve, 1-15. Equipment hole, 2-1. Blower, 2-2. Dust box, 2-3. Dust sealing baffle, 2-4. Blower air inlet, 3-1, humidifier, 3-2, first water tank, 3-3, Bluetooth humidity monitor, 3-4, first hose, 4-1, camera, 4-2, ring LED light source , 4-3. Light intensity detector, 4-4. High-precision humidity detector, 4-5. Handheld dust concentration detector, 4-6. Computer, 5-1. Water pump, 5-2. Second water tank , 5-3, nozzle, 5-4, second hose, 5-5, socket accessories, 6-1, exhaust fan, 6-2, filter unit, 6-3, dust box, 6-4, can Optional hose, 6-5, vacuum head.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Features such as component models, material names, connection structures, control methods, algorithms, etc. that are not explicitly stated in this technical solution are regarded as common technical features disclosed in the prior art.

Example 1

This embodiment provides a tunnel dust concentration measurement and spray dust removal test system, as shown in Figure 1, including:

The test box, as shown in Figure 2, Figure 6, Figure 7, and Figure 11, includes a box body 1-1, a box support column 1-2, a front panel 1-3, a back panel 1-4, and an inner partition 1- 5. Hand crank 1-6, dust scraper 1-7, sealing rubber plug 1-12, shading cloth 1-13; box 1-1 is set on the box support column 1-2; front panel 1-3, The back plate 1-4 is sealedly connected to the box 1-1; the inner partition 1-5 is located in the box 1-1, and the inner partition 1-5 is sealedly connected to the box 1-1 around the inner partition 1-5. The contact surface between 5 and the box 1-1 is provided with a rubber ring; the hand crank 1-6 passes through the side opening of the box 1-1, and the hand crank 1-6 and the box 1-1 are sealed and connected by a rubber ring ; The dust scraper 1-7 is inserted into the opening of the front panel 1-3. The dust scraper 1-7 is sealed with the front panel 1-3 and connected with a rubber ring; the sealing rubber plug 1-12 is inserted into the box 1- The top opening of 1; the shading cloth 1-13 is placed outside the box 1-1; the shading cloth 1-13 is covered outside the box 1-1 to weaken the influence of ambient light and facilitate regular exploration under simple lighting conditions. Complex ambient light can be introduced as an influencing factor after demolition;

The dust generating device includes a dust box 2-2 and a blower 2-1. The dust box 2-2 is connected to the blower 2-1; the blower 2-1 removes the dust in the dust box 2-2 through the blower air inlet 2-4. Dust is blown into the box 1-1;

Humidity control device, including a first water tank 3-2, a humidifier 3-1, and a Bluetooth humidity monitor 3-3; the first water tank 3-2 and the humidifier 3-1 are connected through the first hose 3-4; the humidifier The 3-1 steam outlet is connected to the socket accessory 5-5 through the first hose 3-4; the Bluetooth humidity monitor 3-3 is adhered to the inner wall of the box 1-1;

The measurement device, as shown in Figure 3, includes a camera 4-1, a ring LED light source 4-2, a high-precision humidity detector, a light intensity detector 4-3, and a computer 4-6 connected to the camera 4-1. , handheld dust concentration detector 4-5; the first camera 4-1 is located outside the box 1-1, the annular LED light source 4-2 is located on the front panel 1-3 inside the box 1-1, the annular LED light source 4-2 is glued to the front panel 1-3, and the power supply line comes out of the opening on the contact surface between the light source and the box 1-1; high-precision humidity detector, light intensity detector 4-3, and handheld dust concentration detection The detection parts of the instrument 4-5 are all located on the hand crank 1-6. The detection parts of the high-precision humidity detector, the light intensity detector 4-3, and the handheld dust concentration detector 4-5 are respectively placed on the hand crank. At the upper and lower diameters of 1-6, the power supply cord and the reading part 4-5 of the handheld dust concentration detector come out from the hollow part of the hand crank 1-6 handle;

The spray dust reduction device, as shown in Figure 4, includes a second water tank 5-2, a water pump 5-1, and a nozzle 5-3; the second water tank 5-2 and the water pump 5-1 are connected through the second hose 5-4, and the water pump 5-1 is connected to the socket fitting 5-5 through the second hose 5-4, and the nozzle 5-3 is connected to the socket fitting 5-5 and is located inside the box 1-1;

The dust collection device, as shown in Figure 5, includes an exhaust fan 6-1, a filter unit 6-2, and a dust collection box 6-3; the air inlet of the exhaust fan 6-1 and the air outlet 1- of the box 1-1 10 connection, the air outlet of the exhaust fan 6-1 is connected to the filter unit 6-2, and the dust exhaust port of the filter unit 6-2 is connected to the dust box 6-3.

In a specific implementation, the box 1-1 is an integrally formed cylinder, the box 1-1 is a transparent acrylic cylinder, and the front panel 1-3 and the back panel 1-4 are both made of acrylic corresponding to the size of the cylinder opening. Circular plate;

The joint surfaces of the front panel 1-3, the back panel 1-4 and the cylinder are provided with a circumferential groove, and a sealing ring is provided on the circumferential groove. There are air holes on the side, and the lower opening of the sealing ring is equipped with a hook. The hook matches the lower opening of the front panel 1-3 and the back plate 1-4, and can achieve sealing when the hook is locked; the front panel 1-3 There are holes on the box body, dust scrapers 1-7 are inserted into the holes, and rubber rings are arranged between the dust scrapers 1-7 and the holes; air inlet holes 1-9 and air outlet holes 1-10 are provided on the box body 1-1;

There is a hole on one side of the box 1-1, and the hand crank 1-6 is inserted into the hole. The connection between the hand crank 1-6 and the box 1-1 is sealed with rubber; the hand crank 1-6 includes three holes. There is a hollow handle in the casing structure of the box 1-1 and three semi-circular rings respectively connected to the hollow handle. The hollow handle is outside the box 1-1 and the semi-circular rings are inside the box 1-1. The hollow handle can drive the semi-circular ring to rotate, and the hand crank 1-6 is used to move the light intensity detector 4-3, high-precision humidity detector, and handheld dust concentration detector 4-5 to designated positions for measurement;

The inner partition 1-5 is a transparent acrylic circular plate, which is expanded into a triangular cone shape on all sides to stabilize itself in the cylinder. A rubber sealing ring is used on the bottom side of the cone, and an image is pasted on one side of the inner partition 1-5. As the background to be measured, the volume of the dust distribution space in the box and the distance between the background to be measured and the camera 4-1 can be changed by changing the position of the partition. The space of the box 1-1 where the dust is distributed is the dust chamber. The space behind the inner partitions 1-5 is an isolation cavity.

In a specific implementation, an air inlet check valve 1-14 is provided between the air inlet 2-4 of the blower and the air outlet 1-10 of the box 1-1. The air inlet check valve 1-14 is used to provide Relatively stable environment and prevent dust from pouring back into the blower 2-1; the dust box 2-2 is located at the air inlet of the blower 2-1 and is equipped with a dust sealing baffle 2-3 and a dust sealing baffle 2-3 Separate the dust to be thrown in the dust box 2-2 from the blower 2-1 before starting the test, and facilitate the addition and subtraction of materials; the dust generating device controls the dust uniformity by the power and blast time of the blower 2-1, and is controlled by the dust thrower The amount of dust thrown into box 2-2 controls the average dust concentration in box 1-1.

In a specific embodiment, the humidifier 3-1 draws water from the first water tank 3-2 through the first hose 3-4, atomizes it into water mist, and sends it to the box 1-1 at the sealing rubber plug 1-12 through the pipeline. 1; the box 1-1 is provided with humidity and spray holes 1-8, the sealing rubber plug 1-12 is provided with equipment holes 1-15, the humidity and spray holes 1-8 correspond to the equipment holes 1-15, and the The plug-in is located in the equipment hole 1-15, and the sealing rubber plug 1-12 can be sealed with the humidification pipe by replacing the socket accessory 5-5; the Bluetooth humidity monitor 3-3 is used to monitor the humidity in the box 1-1 in real time. This is used to decide whether to continue to introduce water mist; through the cooperation of the Bluetooth humidity monitor 3-3 and the humidifier 3-1, the humidity control and stability inside the box 1-1 is achieved.

In a specific implementation, the camera 4-1 is used to capture images inside the box 1-1; the ring-shaped LED light source 4-2 is adhered to the inner wall of the box 1-1 through strong glue; when the image needs to be measured, it is located on the inner partition 1 When -5 is on, the photometric equipment is connected to the semi-circular ring, and the high-precision humidity detector 4-4 is connected to the semi-circular ring. Shake the hollow handle to make the semi-circular ring rotate. The photometric equipment is used to measure the intensity of the light source and the background. Light intensity, high-precision humidity detector 4-4 respectively measures the humidity in the dust chamber in the box 1-1 and the humidity in front of the inner partition 1-5; when the image to be measured is located on the back plate 1-4, The high-precision humidity detector 4-4 measures the humidity in the dust chamber in the box 1-1 and the humidity in front of the back plate 1-4 respectively; the handheld dust concentration detector 4-5 includes a probe component and a display processing component. The probe part is connected to the semicircular ring. The display processing part is located outside the box 1-1. The data transmission line is passed from the hollow handle to the display processing part. The handheld dust concentration detector 4-5 is used under various dust conditions. Measurement and calibration are performed; the computer 4-6 is used to receive and process the dust image information collected from the camera 4-1, and perform data analysis and fitting.

In a specific implementation, the spray dust reduction system explores the spray dust reduction effects of different factors by adjusting the form of the nozzle 5-3, the pressure and flow rate of the water pump 5-1 to adjust the particle size and range of the sprayed droplets; the nozzle 5-3 is located at The sealing rubber plug 1-12 is connected to the water pump 5-1 through the second hose 5-4; the water pump 5-1 can adjust the spray by adjusting the water pressure and flow rate; the water pump 5-1 is connected from the second water tank 5-2 The liquid used to form the droplets is obtained.

In a specific implementation, the exhaust fan 6-1 is connected to the air outlet hole 1-10 at the bottom of the box 1-1, and a sealing baffle is provided between the exhaust fan 6-1 and the air outlet hole 1-10; the filter unit 6- 2 is connected to the air outlet of the exhaust fan 6-1, used to filter the extracted dust to avoid polluting the environment; the dust collection box 6-3 is connected to the filter unit 6-2, used to collect the filtered dust for weighing and re-injection The dust is tested; the dust collection device also includes an optional connected hose 6-4 and a dust suction head 6-5. When the dust collection is difficult to extract directly, use the hose and dust suction head 6-5 in the box 1- Go to the designated area to vacuum within 1 hour.

This embodiment also provides a tunnel dust concentration measurement method, as shown in Figures 8, 9, and 10, which includes the following steps:

A1: Check the air tightness of the test chamber. The space 1-1 of the box where the dust is distributed is the dust chamber. The space behind the inner partition 1-5 without dust is the isolation chamber. Determine the length of the dust chamber. Place the inner partition 1-5 Move to the designated position, paste the background image, select the type and quality of dust to be put in, put it into the dust box, and cover it with a light-shielding cloth 1-13;

A2: Turn on the Bluetooth humidity monitor 3-3 of the humidity control device, determine the initial humidity to be selected, and then choose whether to pass in the water vapor generated by the humidifier 3-1. If you need to pass in water vapor, you must disconnect the humidifier 3 after passing it in. -1 Connect with the sealing rubber plug 1-12 and block the equipment hole 1-15 on the rubber plug, open the hand-held dust concentration detector 4-5 and shake it with the hand crank 1-6 to the box 1-1 Perform zero calibration or initial concentration measurement at the position. If the initial dust concentration in box 1-1 is significantly different from the actual observation, box 1-1 needs to be opened and cleaned;

A3: Turn on the ring-shaped LED light source 4-2 of the measuring device, use the camera 4-1 to take a picture of the background, and shake the hand crank 1-6 with the light intensity detector 4-3 to the designated position in front of the background to measure the initial light intensity;

A4: Turn on the blower 2-1 of the dust generating device and the dust sealing baffle 2-3, blow the dust into the box 1-1 through the air inlet check valve 1-14, wait until the dust is blown out and continue blowing 2 After 1 minute, close the dust box partition and wait for 1 minute until the dust condition in the box 1-1 is stable;

A5: Use camera 4-1 to take a background picture with dust. If there is dust attached to the front panel 1-3 that affects image acquisition, you need to use dust scraper 1-7 to scrape out the photo window before shooting. Select a location where the dust concentration is more uniform. The background image part is used as the fitting part;

A6: Open the handheld dust concentration detector 4-5, shake the hand crank 1-6 to make the detection end reach the fitting position, measure the dust concentration at the fitting part as the fitting concentration; open the light intensity detector 4-3, shake Turn the hand crank 1-6 to make the light intensity detector 4-3 reach the fitting position, and measure the light intensity as the light intensity after dust; turn on the high-precision humidity detector, and crank the hand crank 1-6 to make the high-precision humidity detector reach the desired position. At the joint part, measure the humidity as the humidity after dust;

A7: Turn on the exhaust fan 6-1, open the sealing partition 1-11, and exhaust and remove dust in the box 1-1. After there is no obvious dust in the box 1-1, close it. There is still adhesion to the inner wall of the box 1-1. When the dust cannot be extracted through ventilation, open the front panel 1-3 or the back panel 1-4 and wipe it manually, and collect the extracted dust for reuse;

A8: Perform image preprocessing on the collected images before and after dust in the fitting part, such as image dust area positioning and segmentation, original image filtering and denoising, grayscale, regional averaging, initial light intensity, light intensity after dust, and initial humidity. and corresponding data records of post-dust humidity, initial dust concentration and fitted concentration;

A9: After changing the dust concentration, repeat steps A1 to A8 to achieve dust concentration calibration fitting under one working condition, and establish a concentration model under a single working condition between the preprocessed image in A8 and the corresponding data;

A10: After changing the initial light intensity, dust chamber length, background image, etc., repeat steps A1 to A9 to achieve multi-working conditions dust concentration calibration and obtain a dust concentration model in a complex environment.

This embodiment also provides a spray dust removal test method, as shown in Figures 8, 9, and 10, including the following steps:

B1: Select the spray nozzle 5-3 to be used, spray pressure and flow rate, spray time or intermittent spray scheme;

B2: Before the test, open the light intensity detector 4-3, shake the hand crank 1-6 to make the light intensity detector 4-3 reach the measurement site, and measure the light intensity as the light intensity after dust; open the high-precision humidity detector, shake the hand Rock the crank 1-6 to make the high-precision humidity detector reach the measurement position, measure the humidity as the post-dust humidity, and input the obtained data into the concentration model obtained from the tunnel dust concentration measurement test to obtain the initial dust concentration in the box 1-1;

B3: Use the spray data and plan selected in B1 to carry out regular spray dust removal, and wait for a period of time to wait for the dust state in box 1-1 to return to uniformity;

B4: Open the light intensity detector 4-3, shake the hand crank 1-6 to make the light intensity detector 4-3 reach the measurement position, and measure the light intensity as the light intensity after dust removal; open the high-precision humidity detector 4-4, and shake The hand crank 1-6 makes the high-precision humidity detector 4-4 reach the fitting position, measure the humidity as the humidity after dust removal, and input the obtained data into the concentration model obtained from the tunnel dust concentration measurement test to obtain the dust after dust removal in the test chamber concentration;

B5: If using the intermittent spray scheme, repeat steps B3 and B4;

B6: Turn on the exhaust fan 6-1, open the sealing partition 1-11, and carry out exhaust and dust removal in the box 1-1. After there is no obvious dust in the box 1-1, close it. The inner wall of the box 1-1 is still attached. When the dust cannot be extracted through ventilation, open the front panel 1-3 or the back panel 1-4 and wipe it manually, and collect the extracted dust for reuse;

B7: Compare the initial dust concentration and the dust concentration after dust removal to obtain the dust removal effect, and analyze the influence of spray factors such as water consumption and pressure.

The components not described in detail in this embodiment are all existing components that can be purchased through public channels.

The above description of the embodiments is to facilitate those of ordinary skill in the technical field to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without inventive efforts. Therefore, the present invention is not limited to the above embodiments. Based on the disclosure of the present invention, improvements and modifications made by those skilled in the art without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims (10)

1. A tunnel dust concentration measurement and spray dust removal test system, comprising:

the test box comprises a box body (1-1), a box body supporting column (1-2), a front panel (1-3), a back panel (1-4), an inner partition board (1-5), a crank handle (1-6), a dust scraper (1-7), a sealing rubber plug (1-12) and shading cloth (1-13); the box body (1-1) is arranged on the box body supporting column (1-2); the front panel (1-3) and the back panel (1-4) are connected with the box body (1-1) in a sealing way; the inner partition board (1-5) is arranged in the box body (1-1), and the periphery of the inner partition board (1-5) is connected with the box body (1-1) in a sealing way; the dust scraper (1-7) penetrates through the opening of the front panel (1-3), and the dust scraper (1-7) is connected with the front panel (1-3) in a sealing way; the sealing rubber plug (1-12) is plugged into the top opening of the box body (1-1); the shading cloth (1-13) is covered outside the box body (1-1);

the dust generation device comprises a dust box (2-2) and a blower (2-1), wherein the dust box (2-2) is connected with the blower (2-1); the blower (2-1) blows dust in the dust box (2-2) into the box body (1-1) through a blower air inlet (2-4);

the humidity control device comprises a first water tank (3-2), a humidifier (3-1) and a Bluetooth humidity monitor (3-3); the first water tank (3-2) is connected with the humidifier (3-1) through a first hose (3-4); the steam outlet of the humidifier (3-1) is connected with a socket fitting (5-5) through a first hose (3-4); the Bluetooth humidity monitor (3-3) is adhered to the inner wall of the box body (1-1);

The measuring device comprises a camera (4-1), light supplementing equipment, a high-precision humidity detector (4-4), light measuring equipment, a computer (4-6) in communication connection with the camera (4-1) and a handheld dust concentration detector (4-5); the camera (4-1) is arranged outside the box body (1-1), and the light supplementing equipment is arranged on a front panel (1-3) in the box body (1-1); the high-precision humidity detector (4-4), the light measuring equipment and the detection components of the handheld dust concentration detector (4-5) are arranged on the crank handle (1-6);

the spray dust device comprises a second water tank (5-2), a water pump (5-1) and a spray head (5-3); the second water tank (5-2) is connected with the water pump (5-1) through a second hose (5-4), the water pump (5-1) is connected with the socket fitting (5-5) through the second hose (5-4), and the spray head (5-3) is connected with the socket fitting (5-5) and is arranged at the inner side of the tank body (1-1);

the dust collecting device comprises an exhaust fan (6-1), a filtering unit (6-2) and a dust collecting box (6-3); the air inlet of the exhaust fan (6-1) is connected with the air outlet hole (1-10) of the box body (1-1), the air outlet of the exhaust fan (6-1) is connected with the filtering unit (6-2), and the dust discharging port of the filtering unit (6-2) is connected with the dust collecting box (6-3).

2. A tunnel dust concentration measurement and spray dust removal test system according to claim 1, wherein,

the box body (1-1) is a transparent acrylic cylinder, and the front panel (1-3) and the back panel (1-4) are acrylic circular plates corresponding to the opening of the cylinder in size;

the front panel (1-3), the back panel (1-4) and the cylinder joint surface are provided with circumferential grooves, the circumferential grooves are provided with sealing rings, the upper openings of the sealing rings are provided with outward upper opening reverse edges, the upper opening reverse edges are provided with air holes, the lower openings of the sealing rings are provided with buckles, the buckles are matched with the lower openings of the front panel (1-3) and the back panel (1-4), and sealing can be realized when the buckles are locked; the front panel (1-3) is provided with a hole, the dust scraper (1-7) is penetrated in the hole, and a rubber ring is arranged between the dust scraper (1-7) and the hole; an air inlet (1-9) and an air outlet (1-10) are formed in the box body (1-1);

one side of the box body (1-1) is provided with a hole, the crank handle (1-6) is penetrated in the hole, and the joint of the crank handle (1-6) and the box body (1-1) is sealed by rubber; the crank handle (1-6) comprises three hollow handles penetrating through a sleeve structure of the box body (1-1) and three semicircular rings connected with the hollow handles respectively, the hollow handles are arranged outside the box body (1-1), the semicircular rings are arranged in the box body (1-1), the hollow handles can drive the semicircular rings to rotate, and the crank handle (1-6) is used for moving the photometry equipment, the high-precision humidity detector (4-4) and the handheld dust concentration detector (4-5) to a designated position for measurement;

The inner partition board (1-5) is a transparent acrylic circular board, the periphery of the inner partition board is expanded into a triangular cone shape for stabilizing the inner partition board in the cylinder, a rubber sealing ring is used on the side of the conical bottom surface or vaseline is added for sealing, and when the back board (1-4) is used as a background image carrier, the inner partition board (1-5) is used for changing the volume and sealing of a dust space; when the backboard (1-4) is not used as a background image carrier, one side of the inner partition board (1-5) is stuck with an image to be measured as a background, and the space volume of dust distribution space in the box and the distance between the background to be measured and the camera (4-1) can be changed by changing the position of the partition board, the space of the box body (1-1) with dust distribution is a dust cavity, and the rear space of the inner partition board (1-5) without dust is an isolation cavity.

3. The tunnel dust concentration measurement and spray dust removal test system according to claim 1, wherein an air inlet check valve (1-14) is arranged between an air inlet (2-4) of the blower and an air outlet (1-10) of the box body (1-1), and the air inlet check valve (1-14) is used for providing stable environment and preventing dust from flowing back into the blower (2-1) during measurement; the dust box (2-2) is arranged at the air inlet of the air blower (2-1) and is provided with a dust-throwing sealing baffle (2-3), and the dust-throwing sealing baffle (2-3) separates the dust to be thrown in the dust box (2-2) from the air blower (2-1) before starting a test and facilitates addition and subtraction of materials; the dust generation device controls the dust uniformity by the power and the blasting time of the blower (2-1), and controls the average dust concentration in the box body (1-1) by the amount of dust in the dust box (2-2).

4. The tunnel dust concentration measurement and spray dust removal test system according to claim 1, wherein the humidifier (3-1) draws water from the first water tank (3-2) through a first hose (3-4), atomizes the water into water mist, and sends the water mist into the box body (1-1) at the sealing rubber plug (1-12) through a pipeline; the sealing rubber plug (1-12) can realize sealing with the humidifying pipeline by replacing the socket fitting (5-5); the Bluetooth humidity monitor (3-3) is used for monitoring the humidity in the box body (1-1) in real time so as to determine whether water mist is continuously introduced; the humidity inside the box body (1-1) is regulated and stabilized by connecting the Bluetooth humidity monitor (3-3) with the humidifier (3-1) through Bluetooth.

5. A tunnel dust concentration measurement and spray dust removal test system according to claim 2, wherein the camera (4-1) is adapted to take images of the inside of the housing (1-1); the light supplementing equipment is adhered to the inner wall of the box body (1-1) through strong adhesive; when an image to be measured is positioned on the inner partition board (1-5), the light measuring equipment is connected with the semicircular ring, the high-precision humidity detector (4-4) is connected with the semicircular ring, the hollow handle is rocked to enable the semicircular ring to rotate, the light measuring equipment is used for measuring the light source emission intensity and the background front illumination intensity, and the high-precision humidity detector (4-4) is used for respectively measuring the humidity in a dust cavity in the box body (1-1) and the humidity in front of the inner partition board (1-5); when the image to be measured is positioned on the backboard (1-4), the high-precision humidity detector (4-4) respectively measures the humidity in the dust cavity in the box body (1-1) and the humidity in front of the backboard (1-4); the handheld dust concentration detector (4-5) comprises a probe component and a display processing component, the probe component is connected with the semicircular ring, the display processing component is arranged outside the box body (1-1), a data transmission line is transmitted from the hollow handle to the display processing component, and the handheld dust concentration detector (4-5) is used for measuring and calibrating under various dust conditions; the computer (4-6) is used for receiving and processing dust image information collected from the camera (4-1) for data analysis and fitting.

6. The tunnel dust concentration measurement and spray dust removal test system according to claim 1, wherein the spray dust removal system explores spray dust removal effects of different factors by adjusting the form of the spray head (5-3), the pressure and the flow of the water pump (5-1) and the particle size and the range of sprayed liquid drops; the spray head (5-3) is arranged in the sealing rubber plug (1-12) and is connected with the water pump (5-1) through a second hose (5-4); the water pump (5-1) can perform spray adjustment by adjusting the water pressure and flow; the water pump (5-1) obtains liquid for forming liquid drops from the second water tank (5-2).

7. The tunnel dust concentration measurement and spray dust removal test system according to claim 1, wherein the exhaust fan (6-1) is connected with an air outlet hole (1-10) at the bottom of the box body (1-1), and a sealing baffle is detachably arranged between the exhaust fan (6-1) and the air outlet hole (1-10); the filtering unit (6-2) is connected with an air outlet of the exhaust fan (6-1) and is used for filtering the extracted dust to avoid polluting the environment; the dust collection box (6-3) is connected with the filtering unit (6-2) and is used for collecting and filtering the obtained dust for weighing and putting the dust into the dust again for testing; the dust collection device also comprises an optional hose (6-4) and a dust collection head (6-5) which are connected, and when dust collection is difficult to directly withdraw, the hose and the dust collection head (6-5) are used for collecting dust from a designated part in the box body (1-1).

8. The tunnel dust concentration measurement and spray dust removal test system according to claim 1, wherein the box body (1-1) is an integrally formed cylinder or a spliced cylinder sealed by glass cement; sealing measures are arranged at all openings of the box body (1-1), and air tightness is required to be checked before the test starts.

9. A tunnel dust concentration measurement and spray dust removal test method using the tunnel dust concentration measurement and spray dust removal test system according to any one of claims 1 to 8, characterized in that the tunnel dust concentration measurement method comprises the steps of:

a1: checking the air tightness of a test box, wherein the space of a box body (1-1) with dust distribution is a dust cavity, the rear space of a dust-free inner partition board (1-5) is an isolation cavity, determining the length of the dust cavity, moving the inner partition board (1-5) to a designated position, pasting a background image, selecting the type and quality of dust to be put into a dust box, and covering a shading cloth (1-13);

a2: opening a Bluetooth humidity monitor (3-3) of a humidity control device, determining whether to introduce water vapor generated by a humidifier (3-1) after the initial humidity to be selected, if the water vapor needs to be introduced, disconnecting the humidifier (3-1) from a sealing rubber plug (1-12) after the water vapor is introduced, blocking an equipment hole (1-15) in the rubber plug, opening a handheld dust concentration detector (4-5), shaking the handheld dust concentration detector to a plurality of positions in a box body (1-1) through a hand crank (1-6), performing zero calibration or initial concentration measurement, and if the difference between the initial dust concentration in the box body (1-1) and the actual observation condition is large, opening the box body (1-1), and cleaning;

A3: opening a light supplementing device of the measuring device, taking a background by using a camera (4-1), and shaking a crank handle (1-6) with the light supplementing device to a designated position in front of the background to measure initial light intensity;

a4: opening a blower (2-1) and a dust throwing sealing baffle (2-3) of the dust generating device, blowing dust into the box body (1-1) through an air inlet one-way valve (1-14), closing a dust box baffle after the dust is blown and the air is continuously blown, and waiting until the dust state in the box body (1-1) is stable;

a5: taking a background picture with dust by using a camera (4-1), if the front panel (1-3) has dust adhesion to influence image acquisition, taking the picture after scraping a photographing window by using a dust scraper (1-7), and selecting a background image part with uniform dust concentration as a fitting part;

a6: opening a handheld dust concentration detector (4-5), cranking a crank handle (1-6) to enable a detection end to reach a fitting part, and measuring the dust concentration of the fitting part as fitting concentration; starting the light measuring equipment, cranking the crank (1-6) to enable the light measuring equipment to reach the fitting part, and measuring the light intensity as the light intensity after dust; opening the high-precision humidity detector (4-4), cranking the crank (1-6) to enable the high-precision humidity detector (4-4) to reach a fitting part, and measuring humidity to be used as dust humidity;

A7: opening an exhaust fan (6-1), opening a sealing baffle plate (1-11), exhausting and dedusting the interior of the box body (1-1), closing the box body after no obvious dust exists in the box body (1-1), manually erasing the front panel (1-3) or the back panel (1-4) when the attached dust still cannot be extracted through the exhaust, and collecting the extracted dust for recycling;

a8: preprocessing the collected front and rear images of the dust of the fitting part, and recording corresponding data of initial light intensity and post-dust light intensity, initial humidity and post-dust humidity, initial dust concentration and fitting concentration;

a9: after the dust concentration is replaced, the steps A1 to A8 are repeated, so that dust concentration calibration fitting under one working condition can be realized, and a concentration model under a single working condition is established between the image preprocessed in the step A8 and corresponding data;

a10: and (3) repeating the steps A1 to A9 after the initial light intensity, the dust cavity length, the background image and the like are replaced, so that the dust concentration calibration under multiple working conditions can be realized, and a dust concentration model under a complex environment is obtained.

10. A tunnel dust concentration measurement and spray dust removal test method of the tunnel dust concentration measurement and spray dust removal test system as claimed in claim 9, wherein the spray dust removal test method comprises the steps of:

B1: selecting a spray nozzle (5-3), spray pressure, spray flow rate and spray time or an intermittent spray scheme to be adopted;

b2: before the test, the light measuring equipment is started, the crank handle (1-6) is cranked to enable the light measuring equipment to reach the measuring position, and the measured light intensity is used as the light intensity after dust; opening a high-precision humidity detector (4-4), cranking a crank handle (1-6) to enable the high-precision humidity detector (4-4) to reach a measuring position, measuring humidity as dust and then humidity, inputting obtained data into a concentration model obtained by a tunnel dust concentration measurement test to obtain initial dust concentration in a box body (1-1);

b3: carrying out timing spraying dust removal by using the spraying data and the scheme selected in the step B1, and standing for a period of time to wait for the dust state in the box body (1-1) to be recovered uniformly;

b4: starting the light measuring equipment, and cranking the crank (1-6) to enable the light measuring equipment to reach a measuring position, wherein the measured light intensity is used as the light intensity after dust removal; opening a high-precision humidity detector (4-4), cranking a crank handle (1-6) to enable the high-precision humidity detector (4-4) to reach a fitting position, measuring humidity as the humidity after dust removal, inputting obtained data into a concentration model obtained by a tunnel dust concentration measurement test to obtain the dust concentration after dust removal in a test box;

B5: repeating steps B3, B4 if an intermittent spray scheme is used;

b6: opening an exhaust fan (6-1), opening a sealing baffle plate (1-11), exhausting and dedusting the interior of the box body (1-1), closing the box body after no obvious dust exists in the box body (1-1), manually erasing the front panel (1-3) or the back panel (1-4) when the attached dust still cannot be extracted through the exhaust, and collecting the extracted dust for recycling;

b7: and comparing the initial dust concentration with the dust concentration after dust removal to obtain a dust removal effect, and analyzing the influence of water consumption and pressure.