46 results about "Underground mine ventilation" patented technology

The invention relates to the technical field of underground mine ventilation equipment, especially an underground mine natural ventilation equipment which comprises a large vertical chimney arranged near the pit opening, a main ventilating duct arranged in the main tunnel of the underground mine, and a bottom surface having an outlet higher than the large vertical chimney, wherein the top of the large vertical chimney is provided with an umbrella shape cover, and the diameter of the large vertical chimney is two to four times of that of the main ventilating duct. When the main tunnel of the underground mine is connected with the branch tunnel, the main ventilating duct is provided a with corresponding branch ventilating duct, the connection place is provided with a hermetically sealed butterfly valve, and the distance from the inlet of the ventilating duct to the tunnel face is one to four meters. The bottom of the large vertical chimney is connected with a draft fan, and another side is provided with an ash removal opening which can be closed. The ventilating duct is an abrasion resistant and corrosion resisting elastic hermetically sealed duct and is arranged on the top of the tunnel. The inlet of the ventilating duct is an expansion opening. The invention thoroughly solves the air quality problem adjacent to the tunnel face in the tunnel, and thereby avoids the harm to the workers' health and various safety hidden troubles caused by the bad ventilation.

The invention relates to the technical field of underground mine ventilation equipment, in particular to a mine gas, blasting fume and dust separation ventilation system. The system comprises fans and a blowdown stack; the top of a mine main roadway is provided with a main air return channel which is connected with the blowdown stack; the tops of branch roadways on two sides of each stope of a mine are provided with branch air return channels which are communicated with the main air return channel of the mine so as to form a double-air inlet double-air return system of the stope; the fans are arranged on the connection parts of the branch air return channels and the main air return channel; one end of each branch air return channel is connected with the fan, and the other end of each branch air return channel is provided with an air inlet; and each branch air return channel is provided with a ventilation control device which consists of exhaust openings formed in the sides of pipe bodies of the branch air return channel and valves matched with the exhaust openings. Different air flow of each section of the roadway and the requirement can be adjusted. The separation ventilation system is also suitable for ventilation of other underground mines.

The invention discloses a self-propelled air purifying equipment for mines. According to the self-propelled air purifying equipment for mines provided by the invention, the problem that the installation of a traditional underground mine dedusting and toxic gas removal device wastes time and energy is well solved; toxic and harmful gases such as dust, NO2, NO and CO in air after mine blast can be purified at the same time; the self-circulation of air of a blast working surface is realized, the construction environment is improved through purifying the air after blast, and the flow of underground mine ventilation-dedusting and toxic gas removal is simplified; the dust and toxic and harmful gas concentration can be effectively monitored, and the air purification degree can be judged quantitatively; a self-waling device is matched with an ultrasonic ranging sensor, so that automatic walking, automatic deploying and automatic control of the equipment are realized, and polluted air monitoring and purifying in the whole monitoring area are ensured; and the equipment can record and store an operation process in real time through a camera, and operating personnel can check the environment where the equipment is located in real time through the camera.

A mine air quality composite index and ventilation energy-saving linkage system comprises a carbon monoxide detector, a hydrogen sulfide transmitter, a sulfur dioxide detector, a nitrogen dioxide transmitter, a dust detector, a programmable logic controller (PLC), a main fan, a main fan frequency converter, an industrial computer and a local area network, wherein the carbon monoxide detector, the hydrogen sulfide transmitter, the sulfur dioxide detector, the nitrogen dioxide transmitter and the dust detector are connected with the input end of the PLC, the output end of the PLC is connected with the main fan frequency converter, the main fan frequency converter is connected with the main fan, the PLC is bidirectionally connected with the industrial computer, and the industrial computer is connected with the local area network. according to the invention, a ventilation effect of the underground mining surface (or main working middle section) in a nonferrous mine is improved, and the underground working environment of workers is improved. A mine ventilation system time-interval seasonal frequency-conversion energy-saving control system is established to reduce the ventilation energy consumption of an underground ventilation system in the nonferrous metal mine by more than 14%.

The invention discloses a downhole ventilation pipeline with warm keeping and humidifying functions for coal mining. The pipeline comprises a pipeline body, a water pump, an exhaust fan, and an air supply pipe, a supporting shaft is mounted on the surface of the inner wall of the pipeline body, sliding grooves are formed in the surfaces of inner walls of the left and right sides of the pipeline body, atomizing nozzles are connected to the front surface of a water spraying plate, the exhaust fan is mounted above the left side of the pipeline body, first springs are connected to the left and right sides of a mounting block, an inner pipe is mounted in the air supply pipe, a transverse rod is mounted in the right side of the pipeline body, according to the downhole ventilation pipeline with warm keeping and humidifying functions for coal mining, the water spraying plate and the atomizing nozzles are mounted in the pipeline body, in the process of ventilation of the pipeline body, air entering the pipeline body can be conveniently humidified, in the humidifying process, dust in the air can be removed, the underground dust concentration is effectively reduced, and the underground ventilation air quality is improved.

The invention relates to the field of ventilation devices of mines or tunnels, in particular to an underground coal mine ventilation device based on environmental protection. An air inlet is defined in the ventilation pipeline, and the air flowing direction is set to be the first direction; the ventilation device comprises a first filter screen, an air blocking assembly, a scraper assembly, a drainage assembly and an ash removal assembly. The air blocking assembly is installed on the ventilation pipeline in a sliding mode, an ash removal hole is formed in the air pipeline, and the ash removal assembly is configured to drive the ash removal assembly to move synchronously when the scraper assembly moves. According to the ventilation device, when more solid wastes such as dust or other harmful impurities are gathered on the surface of the first filter screen, in order to improve the air cleanliness under the mine and improve the environment, the first filter screen moves to a certain position under the action force of wind, and the scraper is used for scraping the dust on the first filter screen; the ventilation device serves as environmental protection equipment, and the development of the ventilation device is beneficial to atmospheric cleaning and environmental protection.

A mine ventilation curtain (1, 20) is provided comprising, in the operative condition, a generally upright curtain or barrier extending from a foot wall (4) in an underground mine to an overhanging hanging wall (5, 25). The curtain has a foot wall compartment (3, 22) of a flexible sheet material with the footwall compartment being operatively filled with a suitable optionally settable fluent material (13, 27) such that the lower edge of the curtain or barrier substantially adopts an undulating shape of the adjacent foot wall. The fluent material is selected from a suitably heavy liquid and an optionally settable slurry of grout or backfill material. The mine ventilation curtain may be a flexible ventilation curtain (2) extending upwards from the foot wall compartment (3) and having its uppermost edge held in close association with the hanging wall. Alternatively, the mine ventilation curtain may be a generally rigid ventilation barrier (20) in the form of longitudinal segments each of which comprises a series of optionally interconnected superjacent compartments (22, 23, 24) extending from the footwall to the hanging wall with the uppermost compartment (24) adopting an undulating shape of the adjacent hanging wall.

The invention provides a closed door device suitable for mine tunnels. The device comprises a door main body, an airbag, telescopic rods and a support cushion. The innermost side of the airbag is connected to the frame of the door main body, the telescopic rods are arranged around the door main body, one ends of the telescopic rods are fixedly connected to the frame of the main body, the other ends are connected with the support cushion, and the support cushion is connected to the outermost airbag skin of the airbag into a whole in a bonding mode. According to the device, the door main body inthe middle of a door body is of a hard structure, the edge is an inflatable airbag, so that the door body has certain strength and stability, and good sealing performance; according to the device, oxygen loss can be reduced and the utilization rate of oxygen can be improved without affecting underground ventilation; as the tunnels advance, the position of the closed door can be gradually adjustedto adapt to changes of the environment, so that a closed space is always maintained at an appropriate size, the oxygen concentration in a local space can be maintained, constant oxygen supply effectis ensured, a large amount of underground space resources, material resources and financial resources can be effectively saved, the maintenance is convenient, and the cost is low.

The invention belongs to the technical field of underground coal mine ventilation. Goaf air leakage is a nature important link of coal of an existing goaf, however, existing goaf air leakage amount detection is large in manpower consumption and long in detection time, the underground goaf air leakage situation cannot be obtained as soon as possible, goaf management cannot be judged in time. The invention provides a system and method for detecting goaf air leakage under gob-side entry retaining mining in real time. Tracer gas is released in a goaf, mixed gas of the goaf is collected and detected, the contained tracer gas is detected and analyzed, data is transmitted to a ground control system, sound-light alarm is triggered when the air leakage reaches a set threshold value; the installation positions and serial numbers of tracer gas release devices are adjusted according to advancing of a working face, unmanned operation starting is achieved, manpower is saved, the safety in the production process is improved, and the production cost is effectively reduced.

The invention provides a ventilation resistance synchronous measurement system and method, the ventilation resistance synchronous measurement system comprises a synchronous measurement terminal system and a plurality of synchronous measurement subsystems, the synchronous measurement terminal system is used for calculating ventilation resistance and sending an instruction to the synchronous measurement subsystems; comprising a central data processing module, a data display operation module, a multi-mode wireless communication module and a power supply support module, and a synchronous measurement subsystem which is installed in a roadway and used for detecting roadway ventilation data and transmitting the data to a synchronous measurement terminal system, comprising a data preprocessing module, a detection control sub-module, a subsystem power supply support module, a subsystem multi-mode wireless communication module and an environment detection module, the system controls each measurement subsystem through a terminal system, underground ventilation data is automatically collected and measured, and the ventilation resistance of a mine can be accurately and rapidly obtained.

The invention relates to the technical field of mine ventilation equipment, in particular to an automatic openable air door for metallurgy and an underground mine ventilation system. The automatic openable air door for the metallurgy comprises a driving device, a first connecting-rod mechanism and a first door body; the first connecting-rod mechanism comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the first door body, the other end of the second connecting rod is hinged to one end of the first connecting rod, and a linkage mechanism is arranged between the other end of the first connecting rod and the driving device; the driving device is used for enabling the first connecting rod to rotate around a first set axis through the linkage mechanism so that the first connecting rod can pull the second connecting rod to move to make the first door body to be open and closed. The underground mine ventilation system includes the automatic openable air door for the metallurgy. By means of the automatic openable air door for the metallurgy and the underground mine ventilation system, the equipment investment of the air door can bereduced, the space required for installation is reduced, the air door is easy to disassemble, assemble and transport and convenient to maintain and install, the maintenance links are reduced, and thetransmission efficiency is improved.

The invention discloses a coal mine underground ventilation regulating device, which relates to the technical field of coal mine underground ventilation facilities. Including damper, two dampers, base plate is set at the bottom of the two dampers, door body is set on the base plate, openings are set on the damper, frame is set inside the damper, motor is set inside the frame, coupling is set on the motor, and the coupling is far away from the motor A rotating rod is arranged at one end of the output shaft, a rotating disc is arranged on the rotating rod, a push-pull rod is arranged on the rotating disc, a through hole is arranged on the frame, and the device also includes a substrate; a supporting frame is arranged on one side of the substrate, a photoelectric sensor is arranged on the supporting frame, and a sensor The base plate is provided with an airtight frame, the bottom plate is located in the airtight frame, and the bottom of the bottom plate is provided with a bottom plate lifting adjustment device, and the device also includes a control system. The beneficial effect of the present invention is that: the control system controls the photoelectric sensor, the motor and the bottom plate lifting adjustment device, and then controls the chain opening and closing of the two air doors, which saves time and improves the ventilation efficiency.

The invention relates to the technical field of coal mine ventilation, in particular to a low-power-consumption ventilation system for coal mine ventilation and a using method thereof. The system comprises a bottom plate, an aboveground air draft chamber, a lubricating device, a warning device and an underground ventilation channel, wherein a controller is fixedly connected to the left side of thetop end of the bottom plate, a driving motor and a shell are fixedly connected to the top end of the bottom plate, the driving motor is arranged on the inner side of the shell, the right end of the aboveground air draft chamber communicates with the left end of the underground ventilation channel. According to the system, through the arrangement a sliding block, a screw, a first motor, a connecting block and the like, when the connecting block moves leftwards, the inner side of the left end of the connecting block can be clamped with the tail end of a main shaft of the driving motor, the driving motor can drive fan blades to rotate to achieve the ventilation effect, when the connecting block moves rightwards, the inner side of the left end of the connecting block can be disengaged from the tail end of a main shaft of the driving motor in a clamped mode, idling test run of the driving motor can be facilitated, and the effect of conveniently overhauling the driving motor is achieved.

The invention discloses a mobile mine safety system, composed of an underground mine data collection module, a master controller, an alarm device, an Ethernet data sending module and a remote mobile monitoring end. The underground mine data collection module comprises a staff and device positioning system, a potential safety hazard system, an environment monitoring system and an underground mine broadcasting system. The staff and device positioning system is composed of substation antenna modules, island antenna modules, free mobile modules and limited mobile modules. According to the system,a complex underground mine terrain structure can be overcome, through collection of operation data of an underground mine ventilation device, a drainage device, a gas monitoring device, an air qualitydetection device, a thermometer and the staff and device positioning system, states of staff and production devices are effectively collected, the safety production states of the whole mine are reported to a safety supervision department and a supervision responsible person in real time, and the supervision responsible person can check data and issue instructions only through a mobile terminal device, so the mine safety can be effectively supervised.

The invention relates to a natural ventilation system for a coal mine underground and a natural ventilation method for the coal mine underground. The natural ventilation system comprises a main air return roadway, a main return air duct, an exhausting chimney, and a return air duct, wherein the return air duct is synchronously extended into a mining area along mining and tunneling actions, gas generated in a tunneling process is extracted and conveyed into the main coal mine air return roadway or the main return air duct through the suction inlet of the return air duct before being diffused, and finally discharged through the exhausting chimney; a return air connection roadway or a return air connection pipeline is arranged on the innermost end of the mining area and the return air pipeline in a first mining area is connected with other subsequent mining areas, or the first mining area is connected with the other subsequent mining areas. According to the system and the method, the problem of gas accumulation in the mining area and the mining empty area is completely solved, so that gas in each place of the mining areas can enter into the main return air roadway or the main return air duct in the first time and cannot be retained in the production area and accumulated in the mining empty area, gas explosion is completely eradicated, the energy is saved and the hole is in a constant temperature status such as warmer winter and cooler summer.

The invention discloses a coal mine underground ventilation structure convenient to fix, and relates to the technical field of coal mine ventilation. The coal mine underground ventilation structure comprises a first rod body, a second rod body, a third rod body and a fourth rod body; one end of the second rod body is slidably connected into one end of the first rod body in a sleeved manner, one end of the third rod body is slidably connected into one end of the fourth rod body in a sleeved manner, and the second rod body is located at the upper end of the third rod body and is perpendicular tothe third rod body; a clamp is further arranged on a connecting body of the third rod body and the fourth rod body in a matched manner; and first inserting grooves are formed in the four corners of the end face, close to the second rod body, of the first rod body. According to the coal mine underground ventilation structure, through the arrangement of a supporting rod, the first rod body, the second rod body, the third rod body, the fourth rod body, a second limiting strip, a third limiting strip, a first clamping plate, a second clamping plate, an inserting column and a connecting rod, the coal mine underground ventilation structure is convenient to install and high in safety in the using process, rapid and efficient ventilation can be achieved by the coal mine underground ventilation structure, and the coal mine underground ventilation structure is high in applicability; and meanwhile, the coal mine underground ventilation structure is good in folding and storage effect and convenient to transport.

The invention relates to a convenient and efficient movable underground ventilation structure. The underground ventilation structure comprises a rubber air bag used for inflating and blocking an underground ventilation structure body, and a self-stabilizing frame fixedly connected to a rock wall is arranged on the windless side of the rubber air bag. The underground ventilation structure has the beneficial effects of being capable of realizing rapid construction of the underground ventilation structure, good in seal performance, convenient to assemble and disassemble, capable of efficiently carrying out air flow temporary partition and air return roadway temporary blocking and capable of realizing dynamic adjustment of the air volume of an underground mine ventilation system.

The invention provides an underground ventilation safety comprehensive early warning method based on a WebGIS platform. The underground ventilation safety comprehensive early warning method comprises the steps that a gate way, an upper roadway and a lower roadway are correspondingly cut on an ore body, the upper roadway is located between the gate way and the lower roadway, the upper roadway serves as an upper-layer ore stoping transportation channel, the gate way serves as a primary bottom-descending stoping middle-layer ore transportation channel, and the lower roadway serves as a secondary bottom-descending stoping lower-layer ore transportation channel; and ore pillars are formed in the processes of upper-layer ore stoping, primary bottom-descending stoping middle-layer ore and secondary bottom-descending stoping lower-layer ore, then stoping is carried out on the ore pillars, the stoping process is repeated in sequence till stoping of the whole ore body is completed, discontinuous ore bodies in the vertical plane and the plane and ore bodies encountering barren rocks in the same layer are exploited, the upper and lower layer ore bodies are prevented from being discarded, the mining rate is improved, and operation is easy and convenient.

Mine air quality comprehensive index and ventilation energy-saving linkage system, including carbon monoxide detectors, hydrogen sulfide transmitters, sulfur dioxide detectors, nitrogen dioxide transmitters, dust detectors, PLC, main fan and main fan inverter, industrial computer and Local area network, the carbon monoxide detector, hydrogen sulfide transmitter, sulfur dioxide detector, nitrogen dioxide transmitter and dust detector are all connected to the PLC input terminal, the PLC output terminal is connected to the main fan frequency converter, and the main fan frequency conversion The controller is connected to the main fan, the PLC is bidirectionally connected to the industrial computer, and the industrial computer is connected to the local area network. The invention improves the ventilation effect of the underground mining face (or the middle section of the main operation) of the non-ferrous mine, and improves the working environment of underground workers. The mine ventilation system is divided into time and season frequency conversion energy-saving control system, which reduces the ventilation energy consumption of the underground ventilation system of non-ferrous metal mines by more than 14%.

The invention discloses a self-propelled air purifying equipment for mines. According to the self-propelled air purifying equipment for mines provided by the invention, the problem that the installation of a traditional underground mine dedusting and toxic gas removal device wastes time and energy is well solved; toxic and harmful gases such as dust, NO2, NO and CO in air after mine blast can be purified at the same time; the self-circulation of air of a blast working surface is realized, the construction environment is improved through purifying the air after blast, and the flow of underground mine ventilation-dedusting and toxic gas removal is simplified; the dust and toxic and harmful gas concentration can be effectively monitored, and the air purification degree can be judged quantitatively; a self-waling device is matched with an ultrasonic ranging sensor, so that automatic walking, automatic deploying and automatic control of the equipment are realized, and polluted air monitoring and purifying in the whole monitoring area are ensured; and the equipment can record and store an operation process in real time through a camera, and operating personnel can check the environment where the equipment is located in real time through the camera.

The invention discloses a metal mine underground ventilation device. The device comprises a main draught fan, the output end of the main draught fan communicates with an air inlet pipeline, one end ofthe air inlet pipeline is connected with an underground ventilation assembly which is capable of achieving underground ventilation in multiple directions to achieve even ventilation, and a metal dustdisposal assembly which is for conducting screening treatment of metal dust is connected with the bottom of the underground ventilation assembly. According to the device, rotary ventilation is achieved through the arrangement of the underground ventilation assembly; while multiple ventilation pipelines realizes rotating ventilation, a rotation assembly drives single ventilation pipelines to realize rotating ventilation, so the ventilation pipelines make full contact with underground air in the ventilation process conveniently and the ventilation efficiency is improved conveniently; and meanwhile in the ventilation process of the underground ventilation assembly, the metal dust treatment assembly is driven conveniently, so the metal dust after dust reduction is subjected to screening treatment in time in a convenient mode, and the metal dust can be subjected to centralized collection and treatment conveniently.

The invention relates to the technical field of coal mine underground supporting facilities, in particular to a novel system capable of achieving safe water and air use in a coal mine underground, and particularly relates to a coal mine underground air and water supply comprehensive system which comprises a plurality of air supply assemblies and water supply assemblies which are detachably and fixedly installed at designated positions in the coal mine underground. The air supply assemblies are communicated with a main air pipe, a plurality of air return pipelines matched with the air supply assemblies are installed under a coal mine, the water supply assemblies are communicated with a main water pipe, and an air volume control mechanism is installed on each air supply assembly; and each air volume control mechanism is in signal connection with a control end on the ground. According to the system, effective control over the underground coal mine ventilation quantity and ventilation quality can be better achieved through remote control, meanwhile, remote control over underground water supply can be achieved, the underground management level can be improved, and the safety and reliability of underground production are improved.

The invention discloses a mine ventilation monitoring and remote control system and an intelligent decision-making method. The system comprises an underground wind network monitoring system, a ground fan frequency conversion monitoring system, an industrial Ethernet communication system and a ground monitoring center. The underground air network monitoring system is used for monitoring environment parameters and ventilation parameters of underground ventilation network branches in real time and monitoring, regulating and controlling the state of ventilation facilities; the ground fan frequency conversion monitoring system is used for monitoring operation condition parameters of a ground fan in real time and completing regulation and control of the operation frequency of the ground fan; the industrial Ethernet communication system is used for performing uplink and downlink transmission on the acquired environment parameters of the underground ventilation network branches, the ventilation parameters of the underground ventilation network branches, the operation condition parameters of the ground fan, the state parameters of the ventilation facilities and the control instruction of the ground monitoring center; the ground monitoring center is used for monitoring operation parameters of the whole mine ventilation network in real time. The method has the advantage of realizing real-time dynamic measurement of the air flow parameters of the ventilation network.

The present invention relates to an underground mine ventilation technology, specially relates to a step arranged anderground parallel fan station, and it is characterized by that an underground fan station is formed from the components of fan, brattice, ventilation door and underground roadway, according to the roadway space the fans of the fan station can be divided into several groups, the front group and the next group are alternatively separated at a certain distance, there fan groups are formed into the stepped form and arranged in the roadway, every group of fans can only have one fan, also can have several fans which are parallelly-connected and mounted on same section of the roadway, every two groups are partioned by brattice and equipped with ventilation door, and at the fan diffuser position said roadway can be closed by using brattice.

The invention discloses an underground ventilation device for metal mines, comprising a main fan, the output end of the main fan is connected with an air inlet pipe, and one end of the air inlet pipe is connected with an underground ventilation assembly capable of ventilating underground in multiple directions to achieve uniform ventilation. And the bottom of the downhole ventilation component is connected with a metal dust treatment component that screens and treats the downhole metal dust. The present invention realizes rotating ventilation through the set ventilation component, and the multiple ventilation pipes in this solution realize rotating ventilation while performing rotation ventilation. , through the rotation component, a single ventilation pipe is driven to rotate and ventilate at the same time, which is convenient for the ventilation pipe to fully contact with the underground air during the ventilation process, which is convenient to improve the ventilation efficiency. Sieving the metal dust after falling dust is beneficial to the centralized collection and treatment of the metal dust.

The invention provides an underground dust removal method. The underground dust removal method includes the steps that step A, bubbles are continuously generated underground with a bubbling device; step B, wind for blowing the bubbles is drawn from an underground ventilating blower; and step C, the wind for blowing the bubbles blows out and spreads the bubbles continuously generated by the bubbling device, and the blown bubbles are used for underground dust removal. The underground dust removal method has a simple structure and flexible rotation, and can ensure that a large number of bubbles continuously appear to form a bubble waterfall, thereby achieving a good dust removal effect.

The invention discloses a pressure wave-based mine ventilation online monitoring and event location method. The method includes the following steps: 1. By arranging a pressure wave monitoring device in the mine roadway, the downhole pressure fluctuation is monitored in real time, and according to the characteristics of the monitored pressure wave, abnormal events that occur in the underground ventilation system are judged; 2. Through the mine ventilation system Multiple pressure wave monitoring devices are arranged at different locations in the country, and the location of the abnormal event is calculated by using the pressure wave velocity and the time difference between the pressure wave and the pressure wave arriving at different monitoring points; The network is transmitted to the ground server, and whether to send out an alarm is set according to actual needs for technical personnel to make emergency decisions. The invention can monitor the operation status of the mine ventilation system in real time, and capture the abnormality of the mine ventilation system, so as to provide technical means for timely taking technical measures and avoiding the occurrence of major safety production accidents.

The invention provides an underground mine ventilation system and an air volume distribution method, which solves the problem of simultaneous mining ventilation in multiple middle sections of an underground mine. A mine ventilation system constructed by the present invention uses the panel as the minimum ventilation unit; uses the special return air passage as the panel return air passage, uses the non-main function as the main air inlet passage of the panel, and the panel The return air entry in the area is connected with each mining section entry entry through the panel area return air inclined alley; an air flow purification device and a cooling heat exchange device are installed in the panel area air intake entry entry to purify and cool the incoming air flow; Mine ventilation system with dirty air and fresh air functions. In the constructed ventilation system, the present invention proposes two methods for distributing the air volume of the panels. Method 1: By controlling the cross-sectional size of the return air inclined alley in each panel area, the air volume of each panel is balanced; Method 2: By setting an intelligent adjustment windshield in the return air stone door of the panel connecting the return air inclined alley and the return air flat alley , to adjust the ventilation volume of each panel.

The invention discloses a mobile mine safety system, which is composed of an underground data acquisition module, a main controller, an alarm device, an Ethernet data transmission module and a remote mobile monitoring terminal. The underground data acquisition module consists of a personnel and equipment positioning system, a safety hazard system, an environmental monitoring system, and an underground broadcasting system. The personnel and equipment positioning system consists of a substation antenna module, an island antenna module, a free movement module, and a limit movement module. The present invention can overcome complex topographical structures underground, and effectively collect the status of workers and production equipment by collecting the operating data of underground ventilation devices, drainage devices, gas monitoring devices, air quality detection devices, thermometers, personnel and equipment positioning systems, and It can report the safety production status of the entire coal mine to the safety supervision department and the person in charge of supervision in real time. The person in charge of supervision only needs to use a mobile terminal device to view data and issue instructions to achieve effective mine safety supervision.