222 results about "Tunnel ventilation" patented technology

The invention belongs to the technical field of highway tunnel ventilation control, and provides a highway tunnel ventilation control method and system. The method comprises the following steps of multi-source heterogeneous data acquisition, multi-source data fusion, state estimation, traffic flow prediction, dynamic pollution index calculation and multi-target weight generation, rolling optimization with constraints, control execution, model updating and feedback correction. The state sensing precision is improved through multi-source data fusion, real-time accurate estimation and error reduction of a pollutant concentration field and a traffic flow state are realized through a heterogeneous sensor and a Rayleigh fusion technology, the problem of sensing deviation caused by single data in a traditional method is solved, future traffic flow is predicted based on a graph neural network, and the traffic flow sensing accuracy is improved. The fan power is optimized through model prediction control, the ventilation intensity is adjusted in advance, pollutants are prevented from exceeding the standard, the response speed is increased compared with threshold value control, and energy consumption is reduced.

The invention discloses a tunnel ventilation control system and method based on artificial intelligence, and relates to the technical field of ventilation control, and the method comprises the steps: in a tunnel design stage, building an unsteady-state computational fluid dynamics model based on tunnel three-dimensional linear parameters, calculating turbulence structures under different traffic conditions through a large eddy simulation method, and calculating an unsteady-state computational fluid dynamics model; determining an optimal space configuration scheme of the fan group according to the distribution of the velocity field and the pressure field; in the tunnel construction stage, multiple types of sensor arrays are arranged along the vault and the side wall of a tunnel in a layered mode; in the tunnel operation stage, real-time vehicle tracks and speed distribution information of a traffic monitoring system are obtained; establishing a ventilation demand dynamic prediction model based on space-time correlation analysis, constructing a fan cooperative control model considering airflow organization optimization, and solving an optimal operation strategy by adopting a multi-target adaptive weight distribution algorithm; when a fire characteristic signal is monitored, the multiple sets of fans are coordinated to form a relay type smoke exhaust airflow organization.

The invention relates to the technical field of tunnel ventilation control, in particular to a tunnel traffic volume and air demand prediction method based on a BP neural network. The method comprises the following steps: arranging a multi-layer sensor array of a tunnel vertical section according to tunnel structure parameters and traffic flow data; the method comprises the following steps: acquiring environmental parameters of a tunnel along a vertical direction by using a multi-layer sensor array, and integrating traffic flow data to obtain environment-traffic coupling data; performing environment-traffic working condition feature extraction and association according to the environment-traffic coupling data to obtain a vertical feature layer division map and a working condition-pollution response association matrix; and according to the vertical feature layer division map and the working condition-pollution response incidence matrix, carrying out pollutant migration dynamics calculation under the heat and humidity conditions to obtain a pollutant migration dynamics parameter set. According to the method, the tunnel vertical stratification pollutant load index is constructed, the air demand amount is predicted and optimally distributed, and the intelligent level and the operation efficiency of a tunnel ventilation system are remarkably improved.

The invention relates to a tunnel ventilation system parameter optimization method based on neural network model driving, and the method comprises the steps: dividing a tunnel into a plurality of irregular grid nodes according to the three-dimensional geometrical characteristics, aerodynamic characteristics and pollutant distribution characteristics of the tunnel; constructing a nonlinear edge weight calculation function according to the spatial distribution data of the plurality of irregular grid nodes in combination with a pollutant diffusion coefficient, a real-time wind speed field and a spatial position relationship among the grid nodes, and generating an edge weight matrix representing interaction strength among the grid nodes; inputting the grid node information of the plurality of irregular grid nodes and the edge weight matrix into a space-time diagram neural network model to obtain multivariable space-time dynamic characteristics of the pollutants; according to the multivariable space-time dynamic characteristics, pollutant concentration overrun probabilities of the irregular grid nodes are determined; and according to the pollutant concentration overrun probability of the irregular grid nodes, ventilation regulation and control parameters of the tunnel ventilation system are optimized. The design of ventilation system parameters can be optimized.

The invention discloses an ultra-long tunnel small and large fan air compression and supply coordinated ventilation method, and relates to the technical field of tunnel ventilation, and the method comprises the following steps: collecting tunnel environment parameters in real time, and generating a time-space associated environment parameter data set; a main and auxiliary fan performance attenuation model is combined to establish an air quantity coordination intelligent model, and air quantity dynamic distribution according to needs is achieved; frequency conversion air pressure adjustment, partition air volume supplement and air valve intelligent opening degree adjustment operation are executed; and a multi-parameter fusion deviation evaluation model is constructed, the spatial distribution deviation of the adjusted environmental parameters and target parameters is monitored in real time, fan control parameters are dynamically corrected based on a reinforcement learning algorithm, a self-adaptive ventilation adjustment closed loop is formed, and rapid air volume redistribution under the emergency working condition is carried out. According to the method, dynamic data processing, process adaptive air volume calculation, distance perception distribution, partition regulation and control, reinforcement learning optimization and a multi-dimensional emergency response technology are fused, and double improvement of dynamic cooperation of main and auxiliary fans of the ultra-long tunnel, ventilation energy efficiency and construction safety is achieved.

The invention relates to the technical field of subway tunnel ventilation and smoke exhaust, and particularly discloses a fan movable type double-hole shared jet flow ventilation unit which comprises a shell and a control cabinet, the left side of the shell is located on a left line tunnel, the right side of the shell is located on a right line tunnel, and a fan section, an air pipe, an electric sliding rail and an air supply / exhaust port are arranged in the shell; the left line tunnel and the right line tunnel are both provided with segmented air pipes and air supply / exhaust outlets located in the front side and the rear side; the fan section comprises a two-way jet fan and a fan shell, the fan section is installed on the electric sliding rail, the electric sliding rail is transversely arranged along the tunnel, the fan section can be driven by the electric sliding rail to move to the segment position of the air pipe of the left line tunnel or the right line tunnel to complete butt joint, and air supply or air exhaust is achieved through the air supply / exhaust openings in the front side and the rear side. The fan section is installed on the electric sliding rail and can flexibly move between the left-line tunnel and the right-line tunnel, and the ventilation and smoke exhaust functions of single equipment on the double-hole tunnel are achieved.

The invention provides a tunnel fire monitoring and ventilation and smoke exhaust linkage control system. The tunnel fire monitoring and ventilation and smoke exhaust linkage control system comprises a tunnel environment and fire monitoring module, a data fusion processing module, a tunnel ventilation and smoke exhaust linkage control module and a remote monitoring and control management system module which are connected through a communication network. The data fusion processing module is configured with a D-S evidence theory algorithm and is used for receiving multi-source environment data, calculating basic probability distribution of data of each sensor, quantitatively evaluating a fire occurrence probability through a combination rule and generating a fire state judgment result; the tunnel ventilation and smoke exhaust linkage control module is used for receiving the fire state judgment result and determining the target wind speed according to the fire scale; a fuzzy PID control unit and a hysteresis control unit are arranged in the tunnel ventilation and smoke exhaust linkage control module. According to the method, the problem of high false alarm rate of traditional monitoring is solved, the engineering problem that discrete ventilation equipment is difficult to continuously and accurately control is solved, and the disaster prevention and reduction capability of the tunnel is remarkably improved.

The invention belongs to the technical field of tunnel construction, and particularly relates to a tunnel construction ventilation intelligent regulation and control method based on electrical automation. Distributed sensor arrays are deployed on a tunnel driving working face, a haulage roadway and a fan station through a multi-source heterogeneous sensor network, ventilation loads, environmental parameters, equipment states and construction event signals are collected in real time, and real-time and accurate original data support is provided for the system; a three-dimensional fluid mechanics-particulate matter diffusion coupling simulation model of a tunnel ventilation system is constructed, then a digital twin is used as a virtual training environment, an optimization instruction is converted into an electrical control signal, and a closed-loop PID-fuzzy coincidence controller dynamically compensates execution delay, controls operation of a fan and an air valve, and finally performs dynamic simulation on the tunnel ventilation system. And an execution result is fed back to the digital twin body for model calibration, so that finer and more efficient ventilation control is realized, the use problem in a high-altitude and alpine region environment is solved, the continuous effectiveness of ventilation regulation and control is effectively guaranteed, and the overall performance is improved.

The invention relates to the technical field of subway tunnel ventilation and smoke exhaust, and particularly discloses a self-adaptive double-tunnel shared ventilation and smoke exhaust device which comprises a shell and a control cabinet, the left side of the shell is located in a left tunnel, the right side of the shell is located in a right tunnel, and a bidirectional fan is arranged in the center of the shell; the left line tunnel and the right line tunnel are both provided with air supply / exhaust outlets located in the front end and the rear end of the shell, circular air pipes are arranged at the two ends of the two-way fan and connected with the air supply / exhaust outlets of the left line tunnel and the right line tunnel through Y-shaped air pipes, and the air supply / exhaust outlets in the front end share a front sliding baffle capable of sliding along the front rail. And the air supply / exhaust outlets at the rear end share a rear sliding baffle plate capable of sliding along the rear track. By sharing the ventilation and smoke exhaust equipment, the number and investment of the equipment can be greatly reduced, the operation cost can be reduced, the efficiency of the ventilation and smoke exhaust system can be improved, and reliable technical guarantee is provided for long-term operation and maintenance of the subway tunnel.

The invention discloses a tunnel ventilation system and a control method thereof, and relates to the technical field of tunnel ventilation energy-saving control. According to the method, traffic data, environment data and equipment starting data in a tunnel are preprocessed and divided into data sets, a traffic prediction model based on LSTM and an environment prediction model based on full connection are constructed, and training is carried out through a root-mean-square error and an average absolute percentage error; and sequentially predicting traffic and environment data by using the model, and solving an optimal ventilation equipment combination through a sequential quadratic programming algorithm by taking energy consumption minimization as a target and environmental standard reaching as a constraint, and adjusting operation. The method has the advantages that advanced regulation and control are achieved through the two-stage prediction model, pollutants are prevented from exceeding the standard, and the air quality is guaranteed; dynamic training, multi-parameter optimization and a fault tolerance mechanism are combined, energy conservation and environment regulation and control are accurately balanced, meanwhile, the operation reliability and the intelligent level of the system are improved, and manual intervention is reduced.

The invention relates to the technical field of tunnel ventilation, and particularly discloses an energy-saving air duct design method, system, equipment and medium for a tunnel by using natural wind as ventilation power, and the method comprises the following steps: determining the direction and speed of the natural wind in the tunnel and the quantity of air passing through the energy-saving air duct according to natural wind data detected under the perennial meteorological conditions of the tunnel; determining the arrangement position of the energy-saving air duct according to the arrangement positions and geological characteristics of the electrical equipment, the control equipment and the fan; according to the section shape, the arrangement form and the wall surface material of the energy-saving air duct, the on-way resistance coefficient and the local resistance coefficient of the energy-saving air duct are determined; calculating the total resistance of the air duct, and determining the economic section of the energy-saving air duct according to the principle that the total resistance of the air duct is minimum. According to the method, natural wind is used as ventilation power for ventilation and energy conservation, the relation between the economic section and the total resistance loss is combined, the balance between civil engineering cost and the natural wind utilization rate is established, and a ventilation scheme which is more economical and higher in efficiency is obtained.

The utility model relates to a prefabricated middle partition wall structure of a tunnel ventilation inclined shaft. The prefabricated middle partition wall structure at least comprises a bottom supporting structure, a steel supporting assembly and a prefabricated modular wallboard. A positioning groove is formed in the top face of the bottom supporting structure, and the bottom of the steel supporting assembly is embedded into the positioning groove and fixed. The prefabricated modular wallboard is formed by splicing a plurality of prefabricated slabs, the adjacent prefabricated slabs are connected through tongue-and-groove structures which are matched in a concave-convex mode, and the tongue-and-groove joints are filled with sealing materials. The steel supporting assemblies are longitudinally arranged at intervals, and the tops of the steel supporting assemblies are fixed to a tunnel lining to form a steel-concrete combined structure for supporting the prefabricated modular wallboard. The steel supporting assembly and the prefabricated modular wall plate form a steel-concrete prefabricated structure, and the stability of the whole structure is enhanced. By adopting the autoclaved aerated concrete precast block material and the concave-convex groove embedded modular structure, the problems that the construction quality is difficult to control, the construction period is long, the on-way resistance of air flow is large and the like in the existing reinforced concrete mid-partition wall are solved.

The invention discloses a tunnel intelligent ventilation control method and system based on the Internet of Things, electronic equipment and a storage medium, and the method comprises the steps: collecting environment parameters in a tunnel, and determining a difference distribution condition and a local ventilation demand of a local environment region in the tunnel; based on the difference distribution condition, dividing the tunnel space into a plurality of independent control units, and performing feature extraction on the environmental parameters of each independent control unit to obtain a ventilation demand priority; on the basis of the ventilation demand priority, a regulation and control rule base based on a fuzzy control algorithm is constructed, and an air volume distribution scheme of each independent control unit is determined in combination with the local ventilation demand; based on the air volume distribution scheme, the independent control units are controlled to conduct ventilation, airflow interaction information of the adjacent independent control units is collected, and an airflow dynamic balance adjustment scheme is generated based on the airflow interaction information; and dynamically correcting the air volume of each independent control unit based on the airflow dynamic balance adjustment scheme to complete tunnel ventilation control.

The invention discloses a plateau long tunnel transverse channel angle optimization method, relates to the technical field of tunnel construction safety and operation, establishes a quantitative relation between a transverse channel angle and tunnel ventilation energy consumption, and provides a transverse channel optimal angle suggestion suitable for plateau weak surrounding rock. By constructing a stress-resistance-cost multi-factor coupling analysis model and combining rock mechanics and fluid dynamics numerical simulation, surrounding rock deformation, stress distribution and ventilation smoothness characteristics under five angle working conditions of 30 degrees, 40 degrees, 60 degrees, 70 degrees and 90 degrees are systematically compared and analyzed; the conclusion that the 60-degree crossing angle shows the optimal comprehensive performance in the aspects of relieving stress concentration of a triangular area, restraining deformation of a top plate and a bottom plate, improving ventilation efficiency and reducing operation cost is obtained, and theoretical basis and practical reference are provided for engineering design and optimization of the angle of the transverse channel of the plateau long tunnel.

The invention relates to a highway tunnel ventilation and smoke exhaust device and method based on storage. The device comprises a gas storage space, a flow guide channel, a partition baffle, an axial flow fan and a ventilation control module. The partition baffles are arranged in the tunnel discharge flue and divide the tunnel discharge flue into multiple sections of ventilation flues, each section of ventilation flue is provided with a communicating opening, and the ventilation flues are communicated with a tunnel space through the communicating openings; each section of ventilation flue is communicated with the gas storage space through a flow guide channel, and the axial flow fan is mounted in the flow guide channel; the ventilation control module is in control connection with an axial flow fan, and ventilation flues at two ends of the tunnel discharge flue are respectively provided with an air supply and exhaust tower; when the tunnel traffic flow reaches a threshold value, the gas storage space stores waste gas in the tunnel space and supplies fresh air to the tunnel space; and when the traffic flow of the tunnel is smaller than a threshold value, fresh air is stored in the air storage space, and stored waste gas is exhausted. Compared with the prior art, the ventilation system has the advantages of small environmental influence, low ventilation energy consumption and the like.

The invention relates to the field of tunnel structures, and discloses a ventilation system and method for a through parallel adit extra-long highway tunnel. The system comprises a flat pilot tunnel, an inclined shaft, a plurality of connection channels, a ventilation system and an intelligent control system, and the flat pilot tunnel is located between a left tunnel and a right tunnel and is parallel to the left tunnel and the right tunnel; the inclined shaft is respectively communicated with the flat pilot tunnel, the left tunnel and the right tunnel; the connecting channels are arranged at intervals in the length direction of the flat pilot tunnel and enable the flat pilot tunnel to be communicated with the left tunnel and the right tunnel. Comprising a concrete partition plate extending in the length direction of the flat pilot tunnel, the concrete partition plate divides the flat pilot tunnel into an upper layer and a lower layer, a flat guide air supply duct and a flat guide discharge flue are formed respectively, and the flat guide air supply duct is also used as an emergency evacuation channel; and the control module is used for controlling the ventilation system to strengthen the air supply function in an emergency state, so that a positive pressure environment higher than the left hole and the right hole is formed and maintained in the flat guide air supply duct. The method has the beneficial effects that the flat pilot tunnel has the evacuation function, and the emergency rescue capacity is improved.

The application discloses a noise reduction ventilation cooling device and a tunnel system, and belongs to the field of tunnel ventilation and cooling devices.The tunnel system comprises the noise reduction ventilation cooling device, and the noise reduction ventilation cooling device comprises a ventilation noise reduction assembly and a cooling assembly.During ventilation, air passes through the sound-absorbing through holes of the sound-absorbing members, so that the noise generated in the ventilation process of the tunnel system is absorbed.During cooling, the sound-absorbing members on the cavity walls of the ventilation cavity can absorb the noise generated in the cooling process of the heat exchange medium of the heat exchange circuit, so that a low noise level is maintained.Further, the noise reduction ventilation cooling device integrates noise reduction, ventilation and cooling, and is equivalent to a combined device for noise reduction, ventilation and cooling.The sound-absorbing members are used to reduce noise in the ventilation process and the cooling process, so that the tunnel space occupied by the noise reduction ventilation cooling device is reduced, and the problem that the noise reduction device and the heat dissipation ventilation facility occupy a large tunnel space in the prior art is solved.

The present invention discloses a method for determining the frictional resistance coefficient of a physical air duct for tunnel ventilation experiments, comprising the following steps: measuring the radius of the air outlet and the wind speed at the air outlet in its initial state; then removing adjustment rings sequentially from the outside inward, measuring the radius and wind speed of the air outlet each time an adjustment ring is removed, until all adjustment rings are removed; then calculating the pressure loss of the main body of the tunnel model, and finally calculating the frictional resistance coefficient of the main body of the tunnel model. This method not only solves the problem of difficulty in varying the frictional resistance coefficient of tunnel models in the laboratory, but also enables direct calculation of the frictional resistance coefficient based on a formula.

The present invention discloses a pumped-storage power station reservoir ventilation system and modification method based on an underground tunnel group. The ventilation system includes a regulating pool, vents, and ventilation ducts. The regulating pool is arranged at the lowest point of the tunnel group, with a cylindrical cavity at the bottom and a hemispherical cavity at the top. A regulating pool vent is provided at the top of the regulating pool, and a regulating pool ventilation duct is opened from the regulating pool vent to the ground. The ventilation ducts and vents are arranged in a coordinated manner. The vents are arranged at the tops of each tunnel in the underground tunnel group, and the ventilation ducts are used to connect the vents with the bottom surface. The ventilation ducts include a return air duct in the coal test mining area, a combined machine and rail duct in the coal test mining area, a No. 1 connecting tunnel ventilation duct, a passenger yard ventilation duct, a return air duct, a parking lot ventilation duct, a No. 2 connecting tunnel ventilation duct, an extended tunnel ventilation duct, and a regulating pool ventilation duct. The present invention can achieve timely exhaust and air replenishment functions, stabilize the hydraulic flow state of the underground tunnel group, and improve air quality and ventilation conditions.

The application relates to the technical field of tunnel ventilation and safety, and discloses a pipeline ventilation system for tunnel cooling, which comprises a ventilation system, wherein the ventilation system comprises a ventilation pipeline and a ventilation device; a grille is arranged on the inner side of the ventilation pipeline close to the outlet position of the ventilation pipeline; a filter screen is arranged on the side of the grille close to the outlet of the ventilation system; a prewarning system is arranged in the ventilation system; and the ventilation device is arranged in the ventilation pipeline. When the filter screen is blocked, the wind energy on one side of the filter screen exceeds the rated value, the filter screen drives the grille to move to the inside of the ventilation system, until the grille contacts the inductive switch and sends a corresponding prewarning signal to the prewarning system, the prewarning system judges that the filter screen is blocked, and the adsorption dust removal device, the dust cleaning mechanism and the auxiliary ash removal assembly input stable working current to automatically clean and recycle the dust on the surface of the filter screen.

The invention provides a method and a device for determining a tunnel ventilation on-way resistance coefficient in combination with a thermal potential difference, and the method comprises the steps: building a tunnel ventilation energy conservation model in combination with the influence of the thermal potential difference; the thermal potential difference is systematically calculated and necessary pressure correction is carried out based on field measurable parameters, so that the finally determined on-way resistance coefficient of tunnel ventilation can more accurately reflect the ventilation resistance characteristic under the actual working condition, and the calculation deviation caused by neglecting the air density change is effectively overcome; according to the method, the accuracy and reliability of determining the resistance coefficient in a complex environment, especially a tunnel with remarkable temperature difference and elevation difference are remarkably improved, and a more scientific and reliable technical basis is provided for precise design and efficient operation of a tunnel ventilation system.

The invention discloses a power transmission tunnel ventilation system optimization design method based on negative heat source equivalence and multi-field coupling, and belongs to the technical field of power transmission engineering. Aiming at the problems that the three-dimensional fluid simulation calculation amount of the long-distance underground power transmission tunnel is huge and parameterized optimization is difficult to carry out, the method comprises the following steps: firstly, constructing a two-dimensional finite element model containing an equivalent negative heat source, and mapping the heat dissipation effect of air axial flow into section heat absorption power; then, through electromagnetic-heat-flow multi-physics field coupling calculation, the maximum allowable current-carrying capacity under different ventilation wind speeds and vertical shaft distances is obtained; and finally, establishing a full-life-cycle comprehensive cost function including the capital construction project amount, the ventilation node project amount and the operation energy consumption, and determining optimal ventilation design parameters through an optimization decision. According to the method, the calculation time is remarkably shortened on the premise that the calculation precision is guaranteed, and economic and technical collaborative optimization of the ventilation system of the power transmission tunnel can be rapidly achieved.

This invention discloses a tunnel ventilation control method, equipment, and medium based on environmental prediction, relating to the field of environmental management technology. The method includes: collecting and preprocessing environmental data; generating a pollutant heat map based on a pre-trained pollutant diffusion model; overlaying personnel distribution data with the pollutant heat map and determining the tangential direction of the personnel avoidance path as the airflow direction for evacuation guidance, generating evacuation wind direction data; extracting the speed combination and deflection angle of the tunnel ventilation fan from the evacuation wind direction data and outputting a fan control command set; monitoring the pollutant concentration values ​​in each tunnel ventilation area in real time after directional airflow guidance using a smoke concentration sensor; and comparing the predicted concentration values ​​in the pollutant heat map with the actual pollutant concentration values ​​to verify the tunnel ventilation control effect. This invention achieves environmental prediction and airflow guidance correction in the tunnel ventilation control process through the synergy of pollutant heat map generation and evacuation wind direction data generation.

The utility model relates to the technical field of tunnel ventilation fans, in particular to a tunnel ventilation fan which comprises a ventilation pipeline, a ventilation fan is installed on the front side of the interior of the ventilation pipeline, and dustproof net plates are arranged in the ventilation pipeline and located on the rear side of the ventilation fan in a front-back symmetry mode. A dustproof net replacing mechanism and a dustproof net brushing mechanism are symmetrically arranged on the outer side of the ventilation pipeline and at the position corresponding to the dustproof net plate in the front-back direction, and the problem that the self-cleaning capacity of the dustproof net is not high due to the fact that the surface humidity of dust is high and the adhesion of the dust is high is solved; the phenomenon that the surface of the dustproof net at the air inlet of the tunnel ventilation fan cannot be rapidly removed is effectively prevented, through the front set of dustproof net plates and the rear set of dustproof net plates, each dustproof net plate can be driven by the dustproof net replacing mechanism to automatically ascend and descend, the two sets of dustproof net plates can be cleaned in a staggered mode, normal ventilation can still be conducted in the cleaning process, and the cleaning efficiency is improved. And time, efficiency and cost are greatly saved.

The utility model discloses an installation structure of a tunnel ventilation type evaporation and condensation radiator, condensation and heat dissipation are carried out on an air conditioning system through the mode that the evaporation and condensation radiator is installed in a tunnel ventilation pipe of an underground station, and integrated and efficient operation of the air conditioning system of the underground station is effectively achieved. The device comprises an evaporation and condensation radiator, a bypass air valve, a circulating water pump, a ventilation fan, an air filter and an evaporation and condensation control system, the evaporation and condensation radiator is arranged in a fresh air duct or an exhaust shaft, fresh air or exhaust air is used for dissipating heat of the evaporation and condensation radiator, operation parameters of the evaporation and condensation radiator are collected and analyzed through an evaporation and condensation control system, and the operation states of a circulating water pump and a ventilation fan are adjusted through the evaporation and condensation control system. Normal operation of the evaporation and condensation radiator is guaranteed, and therefore compact, stable and energy-saving operation of the air conditioning system of the underground station is achieved.

This invention discloses a method, apparatus, equipment, and medium for controlling a tunnel ventilation fan based on tunnel environment monitoring, relating to the field of automated energy-saving control technology. The method includes: acquiring a vehicle model image set and vehicle images and spectral imaging images of vehicles entering the tunnel, wherein the vehicle model image set includes sample images of several different vehicle models; identifying the vehicle model; using the spectral imaging image of each vehicle as input, monitoring exhaust emissions according to the vehicle model using a vehicle exhaust emission model, obtaining exhaust emission monitoring values, and controlling the operating state of the tunnel ventilation fan based on the exhaust emission monitoring values. This solves the problems of existing ventilation methods for long-distance tunnels, which cannot be individually controlled according to the tunnel environment, resulting in high energy consumption and high maintenance and operating costs.

The application provides a special long highway tunnel ventilation shaft vertical shaft method construction method, comprising the following steps: S1, measuring and lofting; S2, shaft mouth section construction; S3, vertical shaft lifting equipment installation; S4, shaft body construction; S5, equipment inspection, adjustment and next S4 until excavation and support are completed; S6, middle line re-measurement, shaft bottom construction, shaft bottom leveling, layer lining and backfilling, and hoist platform modification; S7, measuring and lofting, adjusting the hoist platform center to the vertical shaft design center, shaft inner anti-drainage layer construction, steel bar binding, form erection, concrete pouring, finishing and maintenance, and second lining construction of the vertical shaft; S8, lifting the hoist platform, and next S7 until the second lining is completed; S9, dismounting the lifting equipment. The application has strong applicability in project construction under poor geological conditions and strict construction period requirements; the construction period can be freely set, is not affected by the main tunnel construction period, is more scientific and reasonable, the construction process is reasonably connected, and the construction quality is safe and reliable.

The application relates to the technical field of tunnel ventilation, and discloses a tunnel exhaust system, a vertical shaft is arranged through a top wall of a tunnel, a smoke exhaust device comprises an exhaust fan, a hood, a non-powered fan, a driving mechanism and a controller, the hood is arranged at the upper end of the vertical shaft, an air inlet and an air outlet are arranged on the side wall of the hood, an exhaust port is arranged at the top of the hood, the non-powered fan is arranged in the inner cavity of the hood, the inner cavity of the hood is communicated with the inner cavity of the vertical shaft, the driving mechanism drives the hood to rotate so that the air inlet of the hood is opposite to the wind direction; the exhaust fan is arranged at the bottom of the vertical shaft, a fan driver drives the rotation of the fan blade; when an actual wind speed detected by a wind speed detection sensor is greater than a preset natural exhaust wind speed, the exhaust fan is paused, and the air inlet of the hood is opposite to the wind direction. The exhaust fan can be started and stopped according to the actual wind speed, the wind energy is fully utilized as power to drive the non-powered fan, the air circulation in the tunnel is ensured, the power consumption is reduced, and energy saving and environmental protection are achieved.

The utility model relates to a tunnel ventilation equipment technical field, concretely is an intelligent tunnel ventilation control system based on stepless speed regulation technology. Include: wind speed sensor for real -time monitoring the wind speed in the tunnel, main control unit for receiving the data of wind speed sensor, calculates the fan speed regulation amount, and generates control instruction, stepless speed regulation drive module is connected with main control unit, realizes the smooth stepless regulation of fan blade rotating speed through the adjustment fan input voltage or frequency, feedback module is used for real -time monitoring the actual rotating speed and operating condition of fan, and the data is fed back to main control unit, forms closed -loop control, communication module, communication module connects feedback module, is used for realizing remote control and data interaction, storage module is used for storing wind speed, rotating speed and control instruction historical data, user interface is used for providing operation interface, and the user sets target wind speed through touch -sensitive screen or remote control equipment.

The utility model provides a hanging type air duct for a mine tunnel, which belongs to the field of tunnel ventilation equipment and comprises an air guide duct body, a hanging assembly and a butt joint assembly. A plurality of supporting rings are fixed to the surface of the air guide barrel at intervals. Butt-joint rings are installed at the two ends of each air guide barrel, a hinged support is installed on the surface of the butt-joint ring at one end in a surrounding mode, a hook is installed on the surface of the hinged support in a hinged mode, and a lock catch is installed on the surface of the butt-joint ring at the other end in a surrounding mode. The hook hinged to the surface of the butt joint ring at one end is connected with the lock catch on the surface of the butt joint ring at one end of the adjacent air guide barrel in a hanging mode, so that the two sections of air guide barrels are connected in a butt joint mode, and the torsional spring arranged at the hinged position of the hook and the hinged support plays a role in pushing the hook to be tightly connected with the lock catch in a hanging mode and preventing the hook from being separated from the lock catch due to stress. An iron wire fixing mode is replaced, and mounting and dismounting are convenient.