86 results about "Road dust" patented technology

The invention discloses an underway monitoring device for the particle size spectrum emission potential of road dust, and the device comprises a particulate matter collection unit which comprises two sampling pipelines, a dust sampling port of one sampling pipeline is located behind a front right tire, and the particulate matter collection unit is used for collecting suspended pavement particulate matters of rotating tires in the running process of a motor vehicle; a background point sampling port of the other sampling pipeline is located at the top of the experimental vehicle, and a particulate matter sample in environment background air is detected to be compared with pavement particulate matters collected by the raised dust sampling port; the vacuum pump provides power for the sampling head; the particle size spectrum monitoring unit is used for detecting particle size spectrum concentration of particles in air; the auxiliary unit is used for providing meteorological parameters of weather; the data acquisition and transmission unit is used for data acquisition and transmission. The invention provides an efficient, safe and rapid method for establishing the particle size spectrum of the road dust particles.

The invention discloses an energy-saving and environment-friendly road dust absorption device for building civil engineering, and relates to the field of engineering construction dust control, the energy-saving and environment-friendly road dust absorption device comprises an absorption box body and a plurality of filter cartridges arranged in the absorption box body, and a cleaning mechanism comprises a plugging plate, a cleaning piece, a first driving piece, a second driving piece and a third driving piece. The supporting seat can rotate around the axis of the supporting seat so that the filter cartridges can sequentially rotate to the cleaning mechanism, the first driving part is used for driving the blocking plate to move in the axial direction of the filter cartridges so as to seal openings in the bottoms of the filter cartridges, and the second driving part is used for driving the cleaning part to move in the radial direction of the filter cartridges so as to abut against the outer surfaces of the filter cartridges. The third driving part is used for driving the filter cartridge to rotate around the axis of the filter cartridge; by means of the multiple filter cartridges arranged in the annular array mode and driving the filter cartridges to enter the cleaning station in sequence through intermittent rotation of the supporting base, online alternate cleaning is achieved, it is guaranteed that dust collection operation is uninterrupted, and the overall efficiency is greatly improved.

The invention discloses an opencast coal mine truck transportation road dust suppressant for a high-temperature dry environment and a preparation method of the opencast coal mine truck transportation road dust suppressant. The dust suppressant is prepared by mixing 20-30% by mass of glucose, 0.05-0.15% by mass of a penetrant, 1.5-2.5% by mass of a water-retaining agent, 1.5-2.5% by mass of a moisture absorbent and the balance of water. The dust suppressant is an environment-friendly material, the main material glucose is a monosaccharide which is most widely distributed and most important in nature, and the dust suppressant has the characteristics of being non-toxic, odorless, green, environment-friendly, wide in source and application and the like. The dust suppressant integrates the functions of wetting, moisture absorption, water retention and the like, can keep dust on a road surface transported by a large mine truck of an open pit coal mine wet and effectively suppress flying dust on the road surface, is simple in preparation process, low in material cost, green and environment-friendly in material and wide in material source, and has good flowability and feasibility. The dust suppressant is applied to the open pit coal mine end slope transportation road, the environment quality and the traffic safety of the open pit coal mine can be effectively guaranteed, and the manpower and material resource investment of environment maintenance is reduced.

The invention discloses a dust fall device and method for road construction, and relates to the technical field of road dust fall, the dust fall device comprises a water supply tank, a mounting frame is fixedly connected to the side wall of the water supply tank, a mounting groove is formed in the side wall of the mounting frame in a penetrating manner, a fixing block is fixedly connected to the top of the water supply tank, and a first sliding groove is formed in the side wall of the fixing block in a penetrating manner; the top of the water supply tank is fixedly connected with a connecting base, and the center of the connecting base is fixedly connected with a rotating shaft. According to the dust falling device for road construction, a sliding frame horizontally reciprocates along the inner wall of a mounting groove, so that a ball can drive a water storage tank to horizontally swing, meanwhile, a cam can drive a connecting block to vertically reciprocate, and the ball can drive the water storage tank to vertically swing, so that the material spraying direction of a spray head continuously moves; the spraying range of the device is expanded, and the situation that due to the fact that the spraying head is fixed, spraying dead angles occur on the device, and the spraying effect is poor is prevented.

The invention relates to the technical field of environmental pollution treatment and particularly provides a dust suppressant as well as a preparation method and application thereof. In order to achieve the purpose, the dust suppressant provided by the invention is prepared from the following raw material components: sodium lignin sulfonate extracted based on lotus stems, deionized water, a first cross-linking agent, a second cross-linking agent, an aqueous solution of organic acid, a first initiator and a second initiator. Wherein the sodium lignin sulfonate is extracted from lotus stems. Through a specific molecular modification technology, sodium lignin sulfonate is extracted and prepared from lotus stems, and the novel dust suppressant applied to roads is prepared through graft copolymerization. The dust suppressant has multiple properties, the structure of the dust suppressant is beneficial to suppression of a dust resuspension phenomenon, and the dust suppressant has adsorption and adhesion effects on dust and is particularly suitable for road dust suppression.

The invention provides an expressway lane cleaning system based on an air-ground amphibious unmanned aerial vehicle. The system comprises an air-ground amphibious cleaning unmanned aerial vehicle set, a detection unmanned aerial vehicle, an accompanying type mobile supply vehicle and a control center. The air-ground amphibious unmanned aerial vehicle has the characteristics of two operation modes of ground running and air flying, and a collaborative cleaning scheduling strategy is designed: during conventional operation, the amphibious unmanned aerial vehicle keeps the ground running mode to perform dust collection and water spraying so as to reduce energy consumption and maintain operation stability; when it is detected that the unmanned aerial vehicle gives an early warning to a rear vehicle, too much road dust or insufficient resources, the control center instructs the related unmanned aerial vehicle to be switched to an air flight mode in real time, and air avoidance, high-altitude dust suppression or rapid station returning supply operation is executed. The problems that a traditional cleaning vehicle hinders traffic and a common unmanned aerial vehicle is insufficient in endurance are effectively solved, and high efficiency and intelligence of lane cleaning are achieved.

The invention discloses a road dust removal device for road repair, and belongs to the technical field of road repair, the road dust removal device comprises a mounting disc, outer supporting rods are uniformly hinged to the outer side of the mounting disc along the axis, a vertical rod is vertically and slidably mounted in the middle of the mounting disc, and inner supporting rods are hinged between the inner sides of the outer supporting rods and the outer side of the vertical rod; the outer side of the outer supporting rod is covered with a polyester fabric cover. The polyester fabric cover is matched with the annular rubber soft plate for use, during operation, the annular rubber soft plate is tightly attached to the ground, the annular rubber soft plate and the polyester fabric cover jointly form a relatively-closed dust removal space, and dust and gravel generated by high-pressure airflow purging are limited in a closed area and prevented from being diffused to the external environment; dust-containing air flow in the closed space is filtered by the filter bag and then discharged, and dust is intercepted and collected by the filter bag, so that flying dust diffusion is completely eradicated, accidental damage to surrounding vehicles, pedestrians and construction equipment due to splashing of fine stones is also prevented, and the safety of the working environment is remarkably improved.

The present disclosure provides a data processing method, device, electronic device and storage medium, the method comprising: obtaining a target vehicle speed of a target vehicle; obtaining an occurrence rate of road dust related accidents; determining a reduction range of the target vehicle speed based on the occurrence rate, the reduction range being positively correlated with the occurrence rate; and controlling the target vehicle speed based on the reduction range to control the possibility of occurrence of the road dust related accidents. The embodiments of the present disclosure can improve the control efficiency of road dust related accidents.

1. Name of the design product: hair dryer. 2. Use of the design product: the design product is used for cleaning leaves, road dust, garbage, snow and the like. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view.

This application provides an automatic road marking drawing device and method, including a drawing vehicle. A material bin is provided in the middle of the top surface of the drawing vehicle. A ground-contact dust collection frame is connected to one side of the front end of the drawing vehicle. The ground-contact dust collection frame slides elastically and vertically under the drawing vehicle. A spray box is fixed in the middle of the side of the drawing vehicle connected to the ground-contact dust collection frame. The spray nozzle of the spray box is located at the center of the ground-contact dust collection frame. A ventilation component is provided inside the end of the drawing vehicle connected to the ground-contact dust collection frame. This invention can adheringly absorb dust on the road surface directly in front of the spray box, completely removing road dust and allowing the road marking spray material to fully fuse with the road surface, thereby ensuring the adhesion strength of the road marking material. At the same time, it can achieve dust-free emission or recycling, and is used to supply high-pressure clean air to the spray box for spraying the marking material, avoiding blockage inside the spray box.

The invention belongs to the technical field of dust collection motor sweepers, and particularly relates to a dust collection motor sweeper self-circulation sweeping device which comprises a compartment, a circulation sweeping mechanism is installed in the compartment, and a discharging mechanism is installed on one side of the top of the compartment. Through the cooperation of the structure and the circulating cleaning mechanism, an open dust collection and exhaust system is changed into a closed self-circulating purification system, and circulating filtration can intercept dust and impurities, prevent an air duct, a fan and a suction port from being blocked, ensure continuous and smooth airflow, prevent suction force from being attenuated along with operation time, filter out gravel, sharp particles and fiber impurities, and improve the working efficiency. Abrasion and clamping stagnation of a fan impeller, a motor and a bearing are reduced, the failure rate and maintenance cost are reduced, dust-containing airflow circulates in a closed loop and is repeatedly filtered, contaminated air is not discharged, road surface dust raising and tail gas dust pollution are greatly reduced, airflow is recycled in the device, it is not needed to continuously suck a large amount of external fresh air and then discharge the fresh air, the fan load is more stable, and the service life of the fan is prolonged. And the overall energy consumption is lower, and the noise is lower.

The invention relates to a road dust falling device, which comprises: a base, which is laid along a road and is provided with a groove at the top; the grating cover body is arranged above the groove in a covering mode to form a dust accumulation space, and attachments falling off from tires when the vehicle runs can be collected; the supporting assembly is supported between the groove and the grille cover body; the two ramps are arranged at the positions, close to the two ends of the base, of the road correspondingly, and vehicles can drive onto the base or drive away from the base through the corresponding ramps; and the cleaning assembly is arranged in the base and the ramp and used for cleaning and discharging attachments collected in the base. The base and the grating cover body form a layered running platform, the upper layer of the grating cover body allows a vehicle to run, the dust accumulation space of the lower layer is supported by the supporting assembly and can collect attachments falling from vehicle tires, and the road surface dust source is effectively reduced. And through flushing of the cleaning assembly, cleaning and discharging of attachments in the dust accumulation space are achieved, and accumulation of the attachments is effectively prevented.

The utility model discloses a caterpillar water spraying vehicle, which relates to the technical field of water spraying vehicles, and comprises a caterpillar vehicle body and a water storage tank, a bottom plate is arranged at the top of the caterpillar vehicle body, guide rails are arranged on the bottom plate, the water storage tank is arranged between the two guide rails, and a mounting frame is arranged at the top of the water storage tank. A supporting column is arranged in the center of the mounting frame, a cross beam is arranged at the top of the supporting column, fixing rods are arranged on the two sides of the outer portion of the cross beam, an adjusting plate is rotatably connected to one ends of the fixing rods, a plurality of spraying plates are arranged on the adjusting plate, a plurality of spraying openings are formed in the spraying plates, a water inlet pipe is arranged on the adjusting plate, and a water outlet pipe is arranged on the water inlet pipe. The water storage tank is installed on the crawler body, the problem of road dust pollution is solved, the adjusting mechanism drives the adjusting plates on the two sides of the cross beam to turn over up and down, the inclination angle of the spraying plate can be adjusted conveniently, the coverage area of the water spraying vehicle is larger, the dust settling effect is better, and the air quality is improved.

The invention discloses road raised dust and dirt collaborative removal negative pressure cleaning equipment which comprises a negative pressure suction box, four sets of lifting type mounting frames, a swing type raised dust assembly, a dirt separation mechanism, a sewage storage box, a dirt storage box and a dust falling plate. The negative pressure suction box is mounted at the front end of a road cleaning vehicle through the four sets of lifting type mounting frames; the swing type dust raising assembly is installed at the bottom of the front end of the negative pressure suction box, the dirt separation mechanism is arranged in the negative pressure suction box, the sewage storage box and the dirt storage box are symmetrically installed at the tail of the negative pressure suction box, the two sets of dust falling plates are symmetrically installed in the middle of the negative pressure suction box up and down, and the front end of the negative pressure suction box is further provided with the visualization assembly. The visual assembly is connected with a controller through a circuit. According to the designed vehicle-mounted negative pressure cleaning equipment, dynamic visual observation, adjustable negative pressure suction and dirt separation and storage treatment can be conducted on dust and dirt on a road, and the road cleaning effect is greatly improved.

This utility model discloses a road dust suppression spraying device, belonging to the field of road management technology, which solves the problems of poor dust suppression effect and high water cost on existing roads. The spraying device includes a double-arm lamp post, with symmetrically arranged mounting rods on both sides of the upper end of the lamp post. A water delivery pipe is provided on one side of the lamp post, and a spray pipe connected to the upper end of the water delivery pipe is provided on the mounting rod. The spray pipe is equipped with multiple multi-head low-pressure atomizing nozzles with different spray angles. The lower end of the water delivery pipe is connected to a main water supply pipe, which is connected to a water supply pump station. A control component for controlling the opening and closing of the pipeline is provided between the water delivery pipe and the main water supply pipe, and the control component is electrically connected to an environmental monitoring station. This utility model's road dust suppression spraying device effectively improves the dust suppression effect, solves the problems of small operating area and large water droplets caused by fog cannons, and has the characteristics of wide applicability and strong practicality.

The utility model discloses a road dust-proof device, which belongs to the technical field of road municipal dust prevention and comprises a dust-proof net, support frames for fixing the dust-proof net are fixedly mounted on two sides of the dust-proof net, and three groups of air holes for slowing down air speed are formed in an inner cavity of the dust-proof net. A dust suppression structure capable of flexibly adjusting the spraying angle is installed at the top of each set of air holes, the dust suppression structures are fixedly connected with the outer wall of the dust screen, a plurality of groove holes are formed in the dust screen, and a dust prevention structure used for assisting in dust falling is fixedly installed in an inner cavity of each groove hole. A rotating pipe drives a rotating nozzle to continuously perform back-and-forth left-and-right swinging operation, so that the spraying range of the device is effectively increased, the dust falling coverage area is expanded, dust falling treatment can be performed on a road more comprehensively, dust falling missing dead angles are reduced, and the overall dust falling efficiency is improved; a wind indicator is matched to drive the rotating nozzle to adjust the angle in real time according to the wind direction; and the water mist can be accurately sprayed to an area needing dust fall.

The utility model provides an intelligent road dust suppression dynamic simulation experiment device. The intelligent road dust suppression dynamic simulation experiment device comprises a control cabinet, a dust sensor, a photoelectric sensor, a limiting sensor, a motor, a display unit and a cloud platform which are respectively connected with the control cabinet, and an electronic application terminal connected with the cloud platform, the control cabinet comprises a frequency converter, a central control unit connected with the frequency converter, a switch connected with the central control unit, and an intelligent gateway connected with the switch. According to the intelligent road dust suppression dynamic simulation experiment device provided by the utility model, through integration of various sensors, remote monitoring and control, motor fault detection and design of safety performance, efficient management of the experiment device is realized, and the stability and the accuracy of the system are improved.

The present invention discloses a distributed road dust monitoring system, comprising: at least one monitoring terminal unit, a monitoring center and a dispatching center; wherein at least one monitoring terminal unit is used to monitor the road dust concentration according to a preset monitoring period; the monitoring center is connected to at least one monitoring terminal unit, and is used to analyze the data sent by the monitoring terminal unit and plan the operation mode according to the analysis result; the dispatching center is connected to the monitoring center, and is used to complete the cleaning operation according to the operation mode planned by the monitoring center. The distributed road dust monitoring system of the present invention has a reasonable layout, strong real-time performance, cost saving and high working efficiency.

The application provides an environment-friendly watering device for a road green belt, which is arranged in a shrubbery of a flower bed. The environment-friendly watering device comprises a lamp post, two baffles, two drip irrigation sprinkling mechanisms and a house type support base. The lamp post is vertically arranged in the flower bed, and two house type support bases are symmetrically arranged on two sides of the lamp post. The drip irrigation sprinkling mechanism is connected with the house type support base in linkage, and the chute extends to the lamp post along the arc direction of the house type support base. The environment-friendly watering device for the road green belt is matched with the lamp post, the two baffles, the two drip irrigation sprinkling mechanisms and the house type support base. The environment-friendly watering device can realize irrigation by using a drip irrigation mode through laying a water pipe in the shrubbery. Water resource is greatly saved, and in order to facilitate the requirement of road dust suppression and dust reduction, the water pipe can be climbed to the lamp post to realize high place spraying, which greatly facilitates the use of personnel.

The utility model belongs to the technical field of marked line spraying, and discloses a pavement marked line spraying machine which comprises a spraying mechanism, a spraying mechanism, a spraying mechanism and a spraying mechanism, the spraying mechanism comprises a movable cart, a material tank used for storing paint is installed above the cart, and a paint spraying head used for spraying the paint out to achieve marked lines is arranged on one side of the material tank; the cleaning mechanism comprises a front frame, an air pipe is installed in the front of the inner side of the front frame, and a plurality of sets of dust blowing nozzles used for blowing out air to clean dust on the road surface are obliquely installed in the front of the air pipe. The dust blowing nozzle blows dust and sundries on the road surface, the flushing nozzle removes stains, the road surface is dried through hot air, after cleaning is completed, the coating nozzle sprays the marking line immediately, and by means of the coherent operation mode of blowing, flushing, drying and spraying, rapid connection of cleaning and marking line construction is achieved, the construction efficiency is improved, and the marking line spraying quality is guaranteed.

This invention relates to the field of road dust suppression technology, specifically to a bio-based dust suppressant that can be used for road reinforcement. Based on 100% solid content, it contains the following components in the following weight ratio: 100 parts xylose mother liquor and 3-50 parts polyamine crosslinking agent; wherein the xylose mother liquor contains 20%-70% solids by weight, with the remainder being water; wherein the solids contain ≥50% reducing sugars by weight, including D-xylose, L-arabinose, D-glucose, and D-galactose, and the xylose content in the solids is ≥20%. The dust suppressant obtained by this invention uses a large amount of waste xylose mother liquor, a byproduct of the sugar industry. This product is a renewable resource and a low-carbon renewable product. Furthermore, the dust suppressant obtained by this invention not only has dust suppression function but also good compressive strength and water resistance, and can be used as a soil stabilizer. Applying the dust suppressant of this invention to roads can produce a pavement system with excellent overall performance.

The utility model discloses a hand-push type road environment governance dust fall device, which belongs to the technical field of road dust fall treatment and comprises a first vehicle bottom plate and a second vehicle bottom plate which are detachably connected. Moving wheels are installed at the four corners of the lower surface of the first vehicle bottom plate and one side of the lower surface of the second vehicle bottom plate, and universal wheels are installed on the other side of the lower surface of the second vehicle bottom plate. The first vehicle bottom plate and the second vehicle bottom plate are matched for use, the first vehicle bottom plate is reserved at the entrance of a road when the vehicle is used for dust falling on a narrow road, the second vehicle bottom plate is matched with a handrail frame to achieve double-hand pushing, and the second vehicle bottom plate is matched with a bevel gear, a rotating shaft, a rotating cylinder, a belt wheel and a belt to drive a reciprocating lead screw to rotate in the walking process; therefore, the swing arm is driven to swing up and down in a reciprocating mode through the hinge arm, multi-angle water spraying and dust falling treatment is achieved, and the water spraying and dust falling device is suitable for water spraying and dust falling treatment in a narrow range.

The present invention provides a method and system for planning a cleaning route of a sprinkler truck based on road dust, and relates to the technical field of planning the cleaning route of a sprinkler truck. The method comprises the following steps: S1, obtaining road data of each road section in a target area and working data of a sprinkler truck; S2, screening each road section according to the road data, and dividing it into a first cleaning section and a second cleaning section, wherein the priority of the first cleaning section is higher than the priority of the second cleaning section; S3, with the goal of minimizing exposure to road dust after the sprinkler truck completes the cleaning work of the first cleaning section and the second cleaning section according to the priority, establishing a corresponding dust suppression cleaning route planning model for the sprinkler truck, and generating constraint conditions for the dust suppression cleaning route planning model for the sprinkler truck according to the road data and the working data of the sprinkler truck; S4, solving the dust suppression cleaning route planning model for the sprinkler truck by an adaptive large neighborhood search algorithm, and obtaining the dust suppression cleaning route for the sprinkler truck.

The invention belongs to the technical field of environment monitoring, and particularly relates to a road dust accumulation amount dynamic detector and a detection method thereof. Disturbing the sampling channel; the dust sensing module comprises a first dust sensor and a second dust sensor; the pipeline anti-blocking structure is integrated in the disturbance sampling channel, comprises a pipeline with a plurality of roundabout paths, and is used for realizing self-cleaning through inertial settlement of particulate matters; the data processing module is connected with the dust sensing module and used for calculating a dust increment value, and the dust increment value is the difference value between the dust concentration generated by the target disturbance source and the background dust concentration; the moving state monitoring module is used for monitoring the moving speed and the moving direction of the device in real time and providing motion compensation parameters for data processing; according to the invention, the problems of background dust interference, equipment blockage and mobile monitoring accuracy can be solved through multilayer sampling, dynamic modeling and motion compensation technologies, and accurate, dynamic and reliable monitoring of the road dust accumulation amount is realized.

The utility model relates to the technical field of road dust removal, and discloses a dust removal device for urban environmental protection, which comprises a dust removal box, the interior of the dust removal box is slidably connected with an air inlet plate, the interior of the air inlet plate is rotatably connected with a first rotating shaft, the outer wall of the first rotating shaft is fixedly connected with a rotating rod, and the interior of the rotating rod is rotatably connected with a second rotating shaft. A pushing block is fixedly connected to the outer wall of the second rotating shaft, a supporting block is slidably connected to the outer wall of the pushing block, a vertical plate is fixedly connected to the outer wall of the supporting block, a pressing block is fixedly connected to the outer wall of the air inlet plate, a fixing block is slidably connected to the outer wall of the pressing block, and one end of a damper is fixedly connected to the outer wall of the air inlet plate. According to the air inlet device, after the air inlet plate is impacted by airflow, through cooperation of the first rotating shaft, the rotating rod, the second rotating shaft, the pushing block, the supporting block, the pressing block, the fixing block and the damper, the effects that airflow impact force is buffered, impact abrasion is reduced, and meanwhile particulate matter rebound caused by airflow impact is prevented are achieved.

The utility model relates to the technical field of dust removal equipment, in particular to dust removal equipment for road construction, which comprises a bottom plate, traveling wheels are mounted on the lower surface of the bottom plate, and a dust removal mechanism for road dust removal is arranged on the upper surface of the bottom plate; the dust removal mechanism comprises a turntable, a water tank, a dust collection box, an exhaust fan and a motor, and the left side of the upper surface of the bottom plate is rotationally connected with the turntable through a bearing. Water in the water tank is pumped through the high-pressure water pump and sprayed to raised dust through the spray head to settle the raised dust, suction force is provided through the exhaust fan, non-settled suspended particles are sucked into the dust collecting box and filtered by the dust filtering cloth, and the electric cylinder drives the sliding plate to move up and down so that the height of the spray head and the height of the dust collection cover can be adjusted. And the motor drives the gear, the gear ring and the turntable to rotate, and the directions of the spray head and the dust hood can be adjusted, so that rapid and effective large-range dust removal work is performed, the dust removal effect is improved, and a guarantee is provided for construction environment maintenance of a road construction site.

The present application relates to the technical field of automatic road construction equipment, in particular to a bituminous road dust removal, laying and leveling integrated machine and a construction method, a trailer board vehicle is connected behind a tractor, a dust suction device, a glass fiber grid laying device, a flattening mechanism, a bituminous mixture flowing device and a leveling device are sequentially arranged on the trailer board vehicle, and the dust removal, glass fiber grid laying, bituminous mixture paving and leveling work can be completed once the trailer board vehicle proceeds forward. The present application has the beneficial effects that the equipment can complete the road dust removal, glass fiber grid laying, bituminous mixture paving and leveling bituminous mixture work in one proceeding process, a large amount of work flow is saved, the efficiency is improved, and the labor cost is reduced.

The invention discloses a construction site dust control level evaluation method based on multi-source data, and the method comprises the steps: obtaining a construction stage of a construction site and a construction site dust control measure implementation condition, and obtaining a first evaluation result; obtaining an average extinction coefficient of the construction site area in combination with the light quantum radar to obtain a second evaluation result; carrying out particulate matter concentration monitoring over the construction site in combination with unmanned aerial vehicle cruise with a particulate matter sensor to obtain a third evaluation result; road dust accumulation load data of roads outside the construction site are monitored in combination with road dust accumulation sailing, and a fourth evaluation result is obtained; and combining the first evaluation result, the second evaluation result, the third evaluation result and the fourth evaluation result to comprehensively evaluate the dust raising control level of the construction site. According to the method, a scientific and reasonable evaluation index system is established based on multi-source data, multiple indexes in a three-dimensional space of the construction site are comprehensively considered, and limitation caused by single-index evaluation is avoided.

The invention provides a composite dust suppressant suitable for a metal mine well road and a preparation method thereof, and relates to the technical field of road dust control, the composite dust suppressant comprises the following components by mass: 0.12%-0.28% of a composite binder, 0.1%-0.3% of OP-10, 1%-2% of polyvinyl alcohol, 4%-6% of a water-retaining agent, and the balance deionized water; the composite binder is xanthan gum and guar gum. According to the composite dust suppressant suitable for the metal mine well road, provided by the embodiment of the invention, a composite dust suppression system integrating multiple functions of bonding, wetting, water retention and moisture absorption is constructed through synergistic compounding of xanthan gum and guar gum and combination of functional complementation of OP-10, glycerol and polyvinyl alcohol.

1. Name of the design product: hair dryer. 2. Use of the design product: the design product is used for cleaning leaves, road dust, garbage, snow and the like. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view.