1223results about "Tunnel/mines ventillation" patented technology

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 field of coal mine exhaust control, in particular to a coal mine exhaust control method and device based on environmental perception. The method comprises the following steps: acquiring multi-dimensional monitoring signals based on environment sensing sensors at multiple positions of a mine, performing distributed sensing marking, and constructing a global gas concentration sensing graph; the method comprises the following steps: acquiring position information of operating personnel in real time based on a miner positioning sensor, performing short-time movement prediction on the operating personnel, and generating a miner movement prediction path; obtaining a coal mine internal structure chart, and carrying out average oxygen consumption rate budget and instantaneous oxygen supply demand calculation based on the miner movement prediction path to obtain oxygen supply demand indexes of each unit; and according to the oxygen supply demand index of each unit, intelligent exhaust power calculation adjustment is carried out, and a conventional exhaust control strategy is constructed. Ventilation efficiency of the coal mine area is improved, emergency blast treatment is carried out under the risk condition, the risk problem response capacity is greatly improved, and safety of the coal mine area is enhanced.

The invention relates to the field of mines, in particular to a mine ventilation safety intelligent monitoring method. The method comprises the following steps: firstly, constructing a graph structure based on acquired mine information, optimizing spatial distribution of monitoring points in the graph structure through a monitoring point coverage efficiency function, and outputting an optimal monitoring point set; arranging sensors based on the optimal monitoring point position set; then, ventilation parameters are collected based on a sensor, and a state feature matrix is generated; constructing an adjacent matrix based on the state characteristic matrix; based on the state characteristic matrix and the adjacent matrix, calculating the abnormal probability of the monitoring point position; based on the abnormal probability, obtaining an early warning level; based on the abnormal probability, calculating three-dimensional coordinates of the hidden danger position through a gradient-guided air flow propagation positioning algorithm; and finally, based on the early warning level and the three-dimensional coordinate of the hidden danger position, executing a hierarchical automatic processing and response mechanism. The technical problems of incomplete monitoring coverage, poor data acquisition real-time performance, insufficient abnormal recognition capability and untimely early warning response are solved.

The invention discloses a coal mine intelligent ventilation optimization regulation and control method and system based on digital twinning, and belongs to the technical field of coal mine safety ventilation. The method comprises the following steps: determining a three-dimensional space topological relation of a coal mine ventilation system based on mine structure data, and mapping real-time ventilation state data to corresponding roadway nodes and branch paths to obtain a twin ventilation state; and performing simulation calculation based on a three-dimensional space topological relation to obtain a theoretical ventilation distribution state, comparing the twin ventilation state with the theoretical ventilation distribution state, determining an air volume deviation region and a gas concentration abnormal region, and obtaining ventilation deviation characteristics to perform virtual rehearsal. Determining an adjustment scheme meeting the ventilation demand constraint and the energy consumption constraint, and generating an optimization regulation and control instruction; and the entity ventilation facility is controlled to execute the adjustment action, and the three-dimensional space topological relation is updated through feedback data. Accurate regulation and dynamic optimization of the ventilation system are achieved, and the safety and the energy-saving effect of coal mine ventilation are improved.

The invention discloses an intelligent layering and guiding device for highway tunnel fire smoke and a control method, and relates to the technical field of tunnel fire safety, a smoke flow Froude number is introduced as a direct control target, the parameter represents the ratio of smoke flow inertia force to buoyancy force, the numerical value directly determines the stability of a layering interface, and the layering interface can be directly controlled. The Froude number of each subarea of the tunnel is calculated in real time through a sensing network and is compared with a critical value calibrated through an experiment, when a real-time value is lower than the critical value, it is indicated that inertia force is relatively insufficient, the buoyancy effect is dominant, and instability and entrainment are likely to happen to an interface between a smoke layer and lower cold air, and then according to a control algorithm, the smoke layer and the lower cold air are controlled. The micro jet fan applies directional inertia force to a smoke layer by adjusting the angle and the speed, the intelligent induction smoke outlet optimizes local pressure difference and flow by adjusting the opening degree and assists in maintaining flowing, the smoke flowing state is actively locked in a stable layered flow interval, and mixing and sedimentation caused by flow state instability are prevented.

The invention relates to the technical field of mine fire-fighting early warning, and particularly provides a mine intelligent fire-fighting control method based on the Internet of Things and artificial intelligence, which comprises the following steps: collecting multidimensional parameters related to mine fire-fighting in real time, synchronously obtaining mine fire-fighting historical data, extracting the multidimensional parameters collected in real time according to a preset time interval, and sending the extracted multidimensional parameters to a server; performing parameter fusion on the extracted multi-dimensional parameters and the obtained mine fire-fighting historical data to obtain a fire-fighting associated feature set containing time-space attributes; inputting the fire-fighting associated feature set into a pre-trained fire-fighting risk prediction decision model, and outputting a fire-fighting disposal strategy through the fire-fighting risk prediction decision model; and starting graded early warning based on the fire risk evolution trend and the fire-fighting disposal strategy, and executing fire-fighting control actions in a linkage manner. According to the method, mine fire-fighting full-dimension monitoring, accurate prediction and dynamic closed-loop control are realized, the fire-fighting intelligent level and the emergency disposal efficiency are improved, and a reliable guarantee is provided for mine safety production.

The invention discloses a novel plug-in type glass fiber reinforced plastic air duct, and relates to the technical field of glass fiber reinforced plastic air ducts. The novel plug-in type glass fiber reinforced plastic air duct comprises a duct body, a plug-in section is arranged at the left end of the duct body in a sealing and sliding mode through a piston ring, a clamping ring is fixed to the left end of the plug-in section, and a check ring is fixed to the inner wall of the duct body; the sealing adjusting assembly is mounted on the inner wall of the socket section through two sliding grooves; and the auxiliary dismounting assembly is arranged between the mounting frame and the sealing adjusting assembly. The sealing ring tightly attached to the outer wall of the inserting section is arranged on the inner wall of the socket section, so that the sealing performance of the inserting structure is improved; the sealing adjusting assembly is arranged, the sealing ring is opened in the inserting process of the inserting section, and the friction resistance during inserting is reduced; by arranging the inserting section capable of being adjusted in a sliding mode and the auxiliary disassembling assembly, the inserting section can be slidably contained in the barrel body during disassembling, the two ends of the middle-section glass fiber reinforced plastic air barrel and the other glass fiber reinforced plastic air barrel are not partially overlapped, and therefore the middle-section glass fiber reinforced plastic air barrel can be rapidly separated from the air barrels at the two ends, and the maintenance and replacement efficiency is improved.

The invention discloses a mine inlet air purification device suitable for a sandstorm environment, and belongs to the technical field of mine ventilation equipment.The mine inlet air purification device comprises an air inlet box, an air inlet channel is formed in the upper portion of the air inlet box, a collecting cavity is formed in the lower portion of the air inlet box, a partition plate is fixedly arranged between the air inlet channel and the collecting cavity, and a plurality of vertically-through through holes are evenly formed in the partition plate; first impact plates are arranged on the inner wall of one side of the air inlet channel, second impact plates are arranged on the inner wall of the other side of the air inlet channel, the first impact plates and the second impact plates are alternately arranged in multiple sets at intervals in the length direction of the air inlet channel, and the included angle between the windward sides of the first impact plates and the windward sides of the second impact plates is an obtuse angle. The first impact plates extend to the positions between the adjacent second impact plates, and the second impact plates extend to the positions between the adjacent first impact plates, so that an S-shaped air flowing path is formed in the air inlet channel. Sand dust and airflow are efficiently separated, meanwhile, the sand dust falls into the collecting cavity, and it is guaranteed that the through-flow area of the air inlet channel is stable.

The invention discloses a coal mine coal dust explosion risk dynamic evaluation and explosion suppression system, which comprises a sensing module, a data processing module, a data processing module and a data processing module, wherein the sensing module is used for acquiring direct and indirect parameters of an underground environment; the central processing module is used for operating a risk assessment algorithm and generating a control instruction; the explosion suppression execution modules are distributed in pipelines and roadways of underground key nodes and are used for executing explosion suppression actions; the active chemical detection module is arranged in the main ventilation pipeline and is used for carrying out pre-chemical sampling and analysis on the inflowing air so as to judge the abnormal enrichment trend of the explosive gas; according to the system, a dynamic risk assessment system based on multi-source indirect perception and active chemical detection is constructed, and precise explosion suppression of time-space cooperation is realized. The method has the advantages of being capable of achieving early warning, dynamic evaluation and precise collaborative explosion suppression.

The invention provides a centralized dust control method and system for a driving working face, and the method comprises the steps: collecting actual measurement environment parameters of the driving working face in real time through a sensor, and carrying out the preprocessing of the actual measurement environment parameters, and obtaining the preprocessed actual measurement environment parameters; acquiring a target environment parameter of the driving working face, and determining an absolute value of an environment parameter difference value according to the target environment parameter and the preprocessed actually measured environment parameter; according to the absolute value of the environmental parameter difference value, an execution mechanism adjustment instruction value is determined through a PID control algorithm; and controlling the driving working face centralized dust control system based on the execution mechanism adjustment instruction value. Wherein the executing mechanism adjusting instruction value comprises the angle variation of a guide vane in the negative-pressure air duct body, the opening size variation of an air distributor in the negative-pressure air duct body and the rotating speed of a fan. According to the technical scheme provided by the invention, the safety and the environmental protection property of the tunneling operation are improved.

The invention provides an energy consumption optimization method and system for mine ventilation, relates to the technical field of mine ventilation, and solves the technical problems that an existing mine ventilation system is too high in energy consumption and uneven in air distribution. The method comprises the following steps: acquiring environment data in real time through a sensor network; simulating air volume distribution in a mine by using a digital twinborn model, and inputting the environmental data into a space-time diagram convolutional network to predict a ventilation demand; performing global optimization by adopting a dynamic weight multi-objective optimization algorithm according to the air volume distribution and the ventilation demand, and generating a multi-fan cooperative control instruction; the control instruction is issued to a frequency converter and a PLC, fan rotating speed adjustment is executed, and a fault diagnosis mechanism is integrated to achieve redundancy switching; and feeding back the execution effect to the digital twinborn model for iterative optimization. The method is used for ventilation system design, operation and maintenance links in various underground mineral exploitation scenes.

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 provides a safety device based on mine ventilation network simulation regulation and control and a use method thereof, and belongs to the technical field of underground safety equipments.The side portion of a frame body is provided with two regulation and control air channels, two transmission modules are arranged between the two regulation and control air channels, and a data acquisition and communication module capable of sliding and ascending and descending is clamped between the two transmission modules; fixing modules are installed on the frame body and the regulation and control air channel, the regulation and control air channel is divided into three sections, a dust removal module is installed in each section, and an air speed detector is arranged on the rear portion of each dust removal module. Comprehensive perception, intelligent regulation and control and convenient maintenance of the mine ventilation system are achieved, a digital twinborn model is accurately constructed through the mobile acquisition module, a data basis is provided for intelligent analysis, the controller can automatically optimize and adjust a fan, the response is fast, an original automatic landing maintenance mechanism is adopted, and the maintenance efficiency is improved. When the air duct is blocked, an alarm can be given and the air duct falls to the ground, so that the maintenance work does not need climbing operation, safety and high efficiency are realized, and the reliability and safety of the system are remarkably improved.

The invention relates to the technical field of highway tunnel smoke exhaust systems, and discloses a bypass type smoke exhaust system suitable for extra-long and large municipal and highway tunnels, the bypass type smoke exhaust system comprises a ground, the upper side of the ground is fixedly connected with a tunnel body, and the left side of the interior of the tunnel body is fixedly connected with a connecting assembly; the connecting assembly is used for monitoring parameters such as smoke concentration and temperature in a tunnel in real time, a fixing box is fixedly connected to the left side of the upper portion of the ground, a partition plate is fixedly connected to the interior of the fixing box, a sealing ring is fixedly connected to the front side of the partition plate, and the sealing ring is fixedly connected to the front side of the interior of the fixing box; and a fixing frame is slidably connected to the interior of the sealing ring, and a filter screen is fixedly connected to the upper side of the interior of the fixing frame. Flue gas is effectively humidified and settled in the discharging process, the treatment effect of the smoke is further improved, the system can be adjusted in real time, and it is ensured that quick response is achieved when a fire disaster happens, and spraying of water mist is controlled.

The invention discloses a linkage system of a roadway air distribution device and a dust removal device and a control method, and belongs to the technical field of safety and environmental protection of mine / tunnel construction. The system comprises a long-pressure air control system, a short air draft dust collection system and an intelligent control module, the long-pressure air control system forms an airflow air wall through a long-distance air distribution device to restrain dust diffusion, the short-air-draft dust collection system captures dust through a short-distance dust collection cover, and the intelligent control module dynamically adjusts operation parameters of the long-pressure air control system and the short-air-draft dust collection system based on parameters such as dust concentration and air speed. The control method comprises the stages of dust suppression, capture, weak wind area removal and intelligent adjustment, and efficient dust removal is achieved through airflow collaborative optimization and a self-adaptive control algorithm. The dust collecting rate can be increased by 50% or above, energy is comprehensively saved by 20% or above, potential safety hazards in weak wind areas are eliminated, and the device is suitable for dust-producing scenes such as driving working faces and belt conveying roadways and has the advantages of being efficient, safe, capable of saving energy and wide in applicability.

The invention discloses an air-dividing dust controller, and relates to the technical field of underground dust removal. An air outlet is formed in the other end of the inner cylinder; air distribution holes are formed in the inner cylinder along the peripheral side; the outer cylinder sleeves the outer side of the inner cylinder and can move along the axis direction of the inner cylinder; air adjusting holes are formed in the peripheral side of the outer cylinder; the driving assembly is connected with the outer barrel and used for driving the outer barrel to move in the axis direction of the inner barrel so as to adjust the overlapping area of the air distribution holes and the air adjusting holes; when the overlapping area of the air distribution holes and the air adjusting holes is larger than zero, airflow exhausted through the air distribution holes and the air adjusting holes forms a dust blocking barrier on the outer side of the outer barrel. By arranging the movable outer cylinder and the air distributing holes and the air adjusting holes which are matched with the outer cylinder, the flow of discharged air is flexibly adjusted. According to the design, the air distribution effect can be adjusted according to actual needs, and the air distribution channels can be closed under specific conditions so as to adapt to different working environments and requirements.

The invention provides an intelligent and efficient centralized dust control system and method for a coal mine driving face. The intelligent and efficient dust collection and control system for the coal mine driving face comprises an air draft part, a ventilation part and an intelligent air curtain adjusting assembly. The air draft part comprises an air draft barrel and an exhaust fan, and the exhaust fan is connected with the air draft barrel; the ventilation part comprises a ventilation barrel, an air guide plate, an arc-shaped fan cover and a ventilator; an end part air outlet and at least one side part air outlet are formed in the end part of the ventilating barrel; the end air outlet comprises an axial opening and a plurality of side openings, and a grid frame is arranged between the air deflector and the ventilator; the intelligent air curtain adjusting assembly comprises a driver and a plurality of switch plates, the switch plates correspond to the fan cover air outlets of the arc-shaped fan cover in a one-to-one mode, the output end of the driver is in transmission connection with the switch plates, and the ventilator and the driver are used for adjusting the first air curtain. According to the intelligent and efficient dust collection and control system for the coal mine driving working face, the ventilation and dust falling effects can be improved.

The invention provides a safety monitoring method and system for deep well heat damage, relates to the technical field of deep well safety, and solves the technical problems of high energy consumption and insufficient monitoring precision of deep well high-temperature heat damage treatment in the prior art. The method comprises the following steps: constructing a heat damage risk prediction model based on a machine learning algorithm, inputting real-time deep well environment data into the heat damage risk prediction model, and outputting a current heat damage risk level; based on the current heat damage risk grade, refrigerating equipment and a ventilation system are dynamically controlled, and the environment is cooled; and waste heat generated during operation of the refrigeration equipment and the mine equipment is recycled, and stepped recycling and power generation treatment are conducted on the waste heat. The method is used for the full-period operation process of deep well mineral resource exploitation, and is particularly suitable for core production links such as the deep well tunneling stage and the stoping operation stage.

The invention discloses a water-rich broken surrounding rock directional grouting method based on an external magnetic field. The method comprises the following steps that 1, geological exploration is conducted on a target water-rich broken surrounding rock area; step 2, mixing the base material, the nano ferroferric oxide magnetic particles, the rheology regulating agent, the dispersing agent and the coagulation accelerator according to a mass ratio; 3, injecting alternating current with the frequency of 50-500Hz into the electromagnetic coil to generate a rotating magnetic field with the intensity of 3-10kA / m, and driving the slurry to directionally migrate along the main fracture area; 4, the grouting pressure of the pre-buried pressure sensor is monitored in real time, when the pressure change rate delta P / delta t is larger than or equal to 0.1 MPa / min, the electromagnetic coil injection frequency is switched to alternating current of 1 kHz to 10 kHz, so that the intensity of a magnetic field is improved to 8 kA / m to 15 kA / m, and grouting on the micro-crack area is enhanced; and 5, when the pressure change rate delta P / delta t is smaller than + / -0.1 MPa / min and lasts for 5-10 min, grouting operation is ended. The method aims at solving the problems that in grouting reinforcement of the water-rich fractured stratum, slurry is lost along with water flow, micro-cracks are difficult to fill, and reinforcement bodies are distributed unevenly.

The invention provides a coal mine underground air door intelligent control method and system based on direct connection communication, and the method comprises the steps: when the number of a vehicle passing through an air door is single and the distance between the vehicle and the air door meets a first condition, the vehicle passes through the air door; a first message is sent to a direct connection communication roadway side device installed on a roadway side through a direct connection communication terminal device installed on a vehicle, wherein the first message comprises vehicle position information, speed information and passing request information containing a vehicle encrypted digital signature; the direct connection communication lane side equipment receives the first message, verifies the legality of the vehicle encrypted digital signature, and sends the vehicle position information and speed information passing verification to an air door controller; and generating an air door control strategy based on the vehicle position information and the speed information, and controlling an air door to execute opening or closing action based on the air door control strategy. According to the technical scheme, the control efficiency and accuracy are improved, and meanwhile automatic air door closing can be achieved in the dangerous case.

The invention provides an underground coal mine ventilation control method and device, electronic equipment and a storage medium, and belongs to the technical field of mine ventilation. The method comprises the steps that the type and concentration characteristics of harmful gas in a target area are determined according to data collected by a biosensor array; determining time sequence data of the harmful gas according to the concentration of the harmful gas, and determining a target concentration change rate of the harmful gas according to the time sequence data; according to the concentration of the harmful gas, the target concentration change rate and the current underground acoustic wave characteristics of the coal mine, the target air volume of the target area is determined; according to the target air volume of the target area, the ventilation resistance of the target area and the current opening degree of the ventilation valve, the opening degree of the ventilation valve is controlled, and the ventilation air volume is determined. According to the coal mine underground ventilation control method and device, the electronic equipment and the storage medium, the ventilation quantity can be accurately and timely adjusted.

The cold region tunnel anti-freezing system comprises a tunnel body, the two ends of the tunnel body extend outwards to be provided with arched open cut tunnels, the open cut tunnels are erected on the ground, and the open cut tunnels and the ground define a part to form a channel; the at least two groups of exhaust systems are arranged on the open cut tunnel along the trend of the channel at intervals, and the exhaust systems are communicated with the outside of the open cut tunnel and the channel; the monitoring system comprises an out-hole detection module arranged outside the channel and an in-hole detection module arranged at the entrance of the tunnel body; and the main controller is arranged in the tunnel body and is in signal connection with the outside-tunnel detection module, the inside-tunnel detection module and the exhaust system. The open cut tunnel outside the tunnel and the exhaust system are combined together, the exhaust system is installed on the open cut tunnel, when cold air intrudes into the tunnel, the cold air can be exhausted through the exhaust system on the open cut tunnel, the cold air is effectively intercepted, and the risk of freezing injury of the tunnel in the cold region can be remarkably reduced.

The invention relates to the technical field of coal mine ventilation control, and discloses a coal mine ventilation integrated control system based on intelligent scheduling. The system comprises an air door operation state monitoring module, a regional ventilation influence evaluation module and a global ventilation collaborative optimization module. The air door operation state monitoring module collects air door operation data such as air pressure, gas concentration, dust concentration, air speed and air door opening degree in real time through multi-source sensor arrays arranged on all air doors of a mine. The regional ventilation influence evaluation module performs abnormal influence quantitative evaluation on the independent ventilation region of the mine according to the real-time air door operation data to generate a regional influence identifier; and the global ventilation collaborative optimization module is combined with a mine topological structure, and performs global optimization calculation of a multi-air-door collaborative control strategy according to the regional influence identifier. The system achieves comprehensive perception, scientific evaluation and global cooperative control of the mine ventilation state, improves the operation efficiency of the ventilation system, guarantees the safety of underground operation of a coal mine, and is suitable for various coal mine ventilation scenes.

The invention discloses a short-wall continuous mining and continuous filling mining method, and relates to the technical field of coal mining, the short-wall continuous mining and continuous filling mining method comprises the following steps: S1, tunneling two roadways, one is a filling auxiliary branch roadway, the other is a coal mining auxiliary branch roadway, and the filling auxiliary branch roadway and the coal mining auxiliary branch roadway are both communicated with an air inlet gate road and an air return gate road; s2, coal mining is conducted in the inclined direction between the filling auxiliary branch roadway and the coal mining auxiliary branch roadway, and a coal mining roadway is formed; s3, when a second coal mining roadway adjacent to the first coal mining roadway is mined, the first coal mining roadway is filled, and the first coal mining roadway and the second coal mining roadway are communicated all the time; s4, repeating the steps S2 and S3; and S5, the filling auxiliary branch roadway, the coal mining auxiliary branch roadway, the air inlet crossheading and the air return crossheading are all blocked. The invention further discloses a roadway structure which is formed through the short-wall continuous mining and continuous filling mining method. Generation of circulating air can be avoided, and mining safety is improved.

The invention provides a mine dust concentration prediction and analysis method based on big data, and the method comprises the steps: building a real-time monitoring network of multi-working-face operation in a mine, obtaining the distribution data of dust clouds of each working face and tunnel concentration distribution information, carrying out the data collection according to a dust superposition effect, and obtaining the initial dust diffusion boundary of each region; according to the initial dust diffusion boundary data, the dust concentration superposition coefficient, the interaction influence radius and the diffusion rate of the dust cloud cluster during multi-working-face operation are analyzed, and the diffusion boundary change trend and the key influence area are determined; adjusting a resource allocation optimization scheme of each region according to a real-time change trend of roadway concentration distribution and a control instruction set, and determining operation parameters and distribution positions of dust control equipment; according to the updated concentration distribution state, whether an area with the dust superimposed effect exceeding the standard exists or not is recognized, if yes, control resources of ventilation equipment, dust removal equipment and a spraying device are redistributed, and a new control instruction set is determined.

Tunnel construction ventilation equipment relates to the technical field of tunnel construction auxiliary equipment and comprises a shell, a storage groove is formed in the front side of the interior of the shell, a temperature and humidity adjusting box is installed in the storage groove, the temperature and humidity adjusting box and the storage groove are limited in a sliding mode, and a first heat exchanger is installed in the middle of the interior of the temperature and humidity adjusting box; the first heat exchanger is arranged in the shell and used for adjusting the temperature of passing air, an atomizing and humidifying mechanism is arranged at the rear end of the first heat exchanger, four air channels communicating with the containing groove are formed in the upper end of the back of the shell, fans are installed in the air channels, and fixing frames are installed on the two sides of the shell. According to the scheme, the problem that ventilation equipment cannot adjust the ventilation quality according to tunnel stage requirements is solved.

The invention belongs to the technical field of mine ventilation management and control, and particularly relates to an intelligent mine ventilation management and control method and system, and the method comprises the following steps: S1, data perception and fusion: collecting multi-source heterogeneous data from a ventilation facility, an environment sensor and a personnel positioning system through a multi-protocol data gateway, and generating a standardized data flow; s2, constructing and updating a digital twinborn body: driving and constructing the digital twinborn body of the mine ventilation system based on the standardized data flow; s3, intelligent deduction and decision making; s4, strategy execution and closed-loop control are carried out; and S5, edge autonomy. The heterogeneous data is integrated through the multi-protocol data gateway, and the standardized data stream is generated, so that a unified and high-quality data basis is provided for subsequent analysis, and the problem of information islands is solved. And the digital twin is dynamically calibrated based on real-time and feedback data, so that the simulation precision is remarkably improved, and the underground ventilation condition can be reflected more truly.

The invention relates to the technical field of mining underground ventilation, in particular to a mining underground ventilation device which comprises a main exhaust pipeline, and an opening and closing air door is provided with blades through a shaft body. A supporting telescopic rod is installed on the inner wall of the branch pipeline, a moving frame is installed at one end of the supporting telescopic rod, a sliding groove is formed in the outer wall of one side of the moving frame, a sliding connecting rod is connected into the sliding groove in a semi-embedded mode, and one end of the sliding connecting rod is movably connected with one side of a blade through a pin shaft; a self-locking assembly is arranged between the fixed end of the supporting telescopic rod and the outer wall of one side of the movable frame, and through the arrangement of the self-locking assembly, automatic locking of the blades in the closed state is achieved through the adsorption effect of a magnetic suction plate on a connecting shaft body of a first connecting rod and a second connecting rod; the problem that the air door is opened accidentally due to the fact that a traditional thread or buckle fixing mode is prone to loosening under the impact of airflow is solved, and the sealing reliability and the operation safety of the air door under the complex working condition of a mining mine are remarkably improved.

The air duct switching mechanism comprises an assembly base plate, and two ventilation openings are formed in the assembly base plate; sliding mechanisms are arranged on the side edges of the two ventilation openings, and air duct quick connectors are arranged on the sliding mechanisms. The air duct quick connector is arranged between the two ventilation openings in a sliding mode based on the sliding mechanism. According to the utility model, the problem that a large amount of working surface space is occupied by the air duct in the prior art is solved, and a single-air-duct dual-working mode, namely switching between positive-pressure air supply and negative-pressure air collection, is realized. And the equipment is simple in structure, small in occupied space and convenient for field management.

The invention discloses an air distribution dust control system and an air distribution control method, and relates to the technical field of underground dust removal. The positive pressure air duct assembly comprises an air distributor, and the air distributor is used for distributing part of airflow generated by an air source to the outside of the positive pressure air duct assembly; a negative pressure air duct assembly; the first air volume sensor is used for measuring the air volume flowing through the positive-pressure air duct assembly; the second air volume sensor is used for measuring the air volume flowing through the negative-pressure air duct assembly; the controller is used for balancing the air volume of the positive-pressure air duct assembly and the air volume of the negative-pressure air duct assembly based on the air volume of the positive-pressure air duct assembly and the air volume of the negative-pressure air duct assembly; the wind power provided by the wind source is adjusted through the wind distributor, so that the positive-pressure wind cylinder and the negative-pressure wind cylinder are kept balanced, and the situation that dust at the head-on position is blown up by redundant wind power transmitted by the positive-pressure wind cylinder, and the dust at the head-on position is diffused is effectively prevented. And the air distributor can generate a dust barrier during air distribution, so that dust is limited between the head-on part and the air distributor.