2826results about "Fire prevention" patented technology

The invention discloses an intelligent regulation and control method and system for dust removal and air control of an underground high-gas heading face, and relates to the field of intelligent control. Firstly, an environment parameter set and an equipment parameter set are obtained in real time; constructing a digital twinborn model of the tunneling face and the ventilation system based on the environmental parameter set and the equipment parameter set, and simulating gas concentration and dust concentration under different working conditions; the prediction model predicts the gas emission amount trend and the dust concentration trend; and inputting the environment parameter set, the equipment parameter set and the risk level into an optimization model, and generating a target decision instruction by the optimization model. The operation parameters in the ventilation system can be timely regulated and controlled in real time based on the monitored environment parameter set of the tunneling face and the equipment parameter set in the ventilation system, so that the ventilation and dust removal efficiency of the ventilation system is improved. Moreover, the decision instruction is generated by referring to the trend of the gas emission amount and the dust concentration in the future, so that the accuracy of the decision instruction of the ventilation system is further improved.

The invention relates to a mining damage control method for multi-medium carbon pollution cooperative reduction and control and resource application, and belongs to the technical field of full-waste resource treatment and utilization of a short-distance coal seam mining goaf. The mining damage control method comprises the following steps that filling liquid and filling materials are stirred and mixed while carbon dioxide gas is introduced to form filling slurry; then all-directional shower type spraying is conducted from the filling pipeline to the goaf; performing full grouting on the goaf in a sealed form until the goaf is full, introducing carbon dioxide into the goaf while performing full grouting, monitoring and analyzing underground behaviors, rock reaction and rock stratum stability of carbon dioxide in a backfilling area, and when underground water exists in a sealing and storing area, establishing an underground water monitoring system to monitor the water quality of the underground water; the power plant flue gas is treated and then injected into the goaf to be mixed with the filling material, so that the oxygen concentration of the goaf is effectively reduced, goaf fire disasters are prevented and treated, mining disasters in the goaf are effectively controlled, and the stability of rock strata is improved.

The invention discloses a shallow hidden fire area radon gas in-situ tracing accurate identification and definition prevention and control system, belongs to the technical field of mine fire prevention and control, and aims to construct a dynamic monitoring, accurate delineation and targeted plugging multi-cooperation closed-loop governance chain and an in-situ radon detection and identification monitoring unit. Drilling, cup burying and sampling integrated operation is completed, and a radon gas concentration abnormal signal is monitored in real time; the radon measurement magnetic method fire area precise delineation unit is used for quantitatively delineating a fire source prevention and control area in a grading manner by fusing a radon gas magnetic field two-parameter ring type measurement network layout and combining an intersection and union set abnormal area division method and a comprehensive abnormal index threshold value method; according to the earth surface crack self-adaption blocking treatment unit, a dynamic shoveling solidified slurry precise blocking device is adopted, and efficient treatment of the shallow buried coal seam hidden fire area is achieved by separating an earth surface and an underground air leakage channel through bucket prepared soil screening and conveying, instant slurry preparation through a synthesis system, directional slurry spraying through a blocking mechanism and crawler belt ballasting dense blocking.

The invention relates to the technical field of mine environmental protection and intelligent control, and discloses an intelligent dust suppression system and method for an open-pit coal mine, which are used for solving the problems of fixed spraying mode, poor real-time performance and waste of water resources in the dust suppression process of the open-pit coal mine. According to the intelligent dust suppression system and method for the open pit coal mine, a dust concentration sensor, a wind speed and direction sensor and a meteorological sensor are arranged in a mining area, real-time monitoring of a dust diffusion source and environmental parameters is achieved in combination with a video monitoring unit, and multi-source data are fused in a control system for diffusion trend prediction; according to the method, a dust high-risk area can be dynamically identified, then a targeted spraying strategy is generated according to a prediction result, and accurate control over the spraying position, the spraying time and the spraying flow is achieved, so that the problems that in the prior art, a spraying operation mode is fixed and is difficult to adapt to environmental changes are solved, the water consumption per unit time is reduced, and the working efficiency is improved. The air quality of an operation area is guaranteed, and the operation environment safety and the environmental protection standard-reaching rate are improved.

The invention relates to the technical field of underground dust removal and ventilation, in particular to an underground driving working face ventilation and purification device and a use method.The underground driving working face ventilation and purification device comprises an air duct, a detection frame is arranged at the top of the air duct, a sensing system is arranged outside the detection frame, and a dust collection unit is arranged in an inner cavity of the air duct; compared with an existing ventilation and purification device for the driving working face, when air suction is conducted on the driving working face through an air duct, the head-on collecting assembly can accelerate the air suction speed of the air duct, on the other hand, the head-on collecting assembly can be close to the area, with large dust, of the driving face, accurate suction is achieved, and the dispersion speed of dust is reduced; dust in the air is removed from the underground driving working face through the atomization dust removal assembly; the head-on collecting assembly is close to the heading face of the dust raising position and assists the air duct in adsorbing and discharging air.

The invention relates to a control method for linkage of multi-source dust treatment and dust removal in a closed underground space. The control method is applied to the dust removal system. The method comprises the following steps: firstly, performing three-dimensional dynamic simulation on an airflow field in a closed underground space based on a computational fluid mechanics model to obtain flow field data output by the three-dimensional dynamic simulation; then, based on the flow field data, isolation and sealing control is performed on the source of dust in the underground space. And then the operation area is divided into a plurality of functional areas, and the air volume of the independent air draft pipeline system of each functional area is determined. Then, the dust is guided to be concentrated towards a suction area in the multiple functional areas through an air flow organizing device. Finally, multiple pieces of sensor data of the multiple functional areas are collected according to the sensors of all the functional areas, and big data analysis is carried out based on the multiple pieces of sensor data so as to control the dust removal system. According to the invention, dust in the closed underground space can be efficiently and reliably controlled and treated.

The invention relates to a gas-water curtain partition type tunnel smoke control system and method, and belongs to the field of tunnel fire prevention and control, the gas-water curtain partition type tunnel smoke control system comprises a tunnel, smoke control partitions, a tunnel fire extinguishing system, a gas curtain generation system, a water curtain generation system and a fire detection alarm, the gas curtain generation system comprises a gas curtain generation tail end, and the water curtain generation system comprises a water curtain generation tail end. The tunnel is divided into a plurality of smoke control subareas by the air curtain generation tail end and / or the water curtain generation tail end. A plurality of air curtains and water curtains can be formed at the boundaries of the two sides of the smoke control subareas, at the moment, smoke generated by a fire source can be isolated into the smoke control subareas, the smoke can be continuously eliminated under the internal circulation purification effect of the tunnel fire extinguishing system, meanwhile, the tunnel fire extinguishing system can automatically restrain fire spreading, and therefore the smoke spreading path is thoroughly blocked.

A combined dust suppression system for a metal ore unloading station, and a using method. The combined dust suppression system consists of an ore unloading station tunnel wall surface accumulated dust high-pressure water flushing device, an ore unloading station tunnel floor spraying, watering, and wetting device, and an ore unloading station ore train floor bidirectional high-pressure spray dust suppression device. The ore unloading station tunnel wall surface accumulated dust high-pressure water flushing device is used for performing manual flushing on a tunnel by means of high-pressure water in the travel direction of an ore unloading train, the ore unloading station tunnel floor spraying, watering, and wetting device is used for performing spraying, watering, and wetting on the tunnel, and the ore unloading station ore train floor bidirectional high-pressure spray dust suppression device isolates dust generated during ore unloading at the ore unloading station. The water consumption can be reduced, excessive water in an ore unloading pit that causes adhesion and blockage can be effectively avoided, the field applicability of high-pressure spray dust suppression measures is improved, and on-demand spray dust removal of a high-pressure spray device is achieved; high-pressure water is used for flushing accumulated dust on the tunnel wall surfaces of ore unloading stations, and the tunnel floors of ore unloading stations are sprayed, watered, and wetted, thereby achieving significant comprehensive dust suppression and dust control effects, and notable energy-saving effects.

The invention relates to the technical field of mine ventilation equipment, and discloses coal mine dust removal ventilation equipment which comprises an air pipe, an air draft assembly used for air draft is arranged at the top of a bottom plate of an inner cavity of the air pipe, a collecting assembly used for dust removal is arranged in the air pipe, and the collecting assembly comprises a lower baffle and an upper baffle. The lower baffle and the upper baffle are fixed to one side of a bottom plate and one side of a top plate of an inner cavity of the air pipe correspondingly, an air cylinder is fixed to the surface of the middle position of the upper baffle, an output shaft of the air cylinder penetrates through the top of the air pipe, a linkage plate is rotationally connected to the top of the output shaft of the air cylinder, and a magnetic sheet set is inlaid in the bottom of the linkage plate. According to the exhaust fan, the activated carbon box set is arranged in the air pipe, when the exhaust assembly conducts exhaust type ventilation, after air enters the air pipe, dehumidification and dust removal are conducted through activated carbon particles in the activated carbon box set, the influence of dust and moisture on an impeller of the exhaust fan is reduced, and then the ventilation efficiency of the exhaust fan is improved.

The invention relates to the technical field of constructional engineering, in particular to a tunnel construction safety monitoring and automatic spraying dust fall method, which comprises the following steps: acquiring sensing data of a construction area, the sensing data at least comprising dust concentration data, humidity data and airflow data at each detection position; according to the dust concentration data, determining a high dust concentration area and predicted dust concentration data of the high dust concentration area at a future moment; according to the dust concentration data, the predicted dust concentration data, the current position of a spraying device and the position of the high-dust-concentration area, the humidity data and the airflow data are combined, and spraying control logic is determined; according to the spraying control logic, a spraying device is controlled to spray water to the high-dust-concentration area for dust falling. By monitoring the sensing data of the construction area and processing the sensing data to determine the appropriate spraying control logic, the dust falling effect is effectively improved.

The invention relates to the technical field of goaf fire prevention and extinguishment, in particular to a dynamic monitoring method and system for closed goaf fire prevention and extinguishment. According to the dynamic monitoring method, early warning parameters in a closed goaf and the air leakage amount of an air leakage position are monitored, and when the concentration of oxygen in the closed goaf is larger than a safety threshold value, the closed goaf is started; inert gas with the concentration and the flow is dynamically injected into the closed goaf until the concentration of oxygen in the closed goaf is smaller than or equal to a safety threshold value, and monitoring continues; the monitoring system comprises a gas injection system and a monitoring system, wherein the gas injection system is used for injecting inert gas into a plurality of closed goaf areas, and the monitoring system is used for monitoring early warning parameters in the closed goaf areas and the air leakage amount of air leakage positions. And controlling a gas injection system to inject inert gas into the closed goaf according to the oxygen concentration and the air leakage amount in the closed goaf. The purpose of efficient fire prevention and extinguishing through dynamic control over inert gas can be achieved, and spontaneous combustion of residual coal in the goaf is effectively prevented.

The invention provides a coal mine ventilation air methane synergistic enrichment and fluidized heat storage combustion system and method. The system comprises an air shaft diffusion tower and a ventilation air methane collecting device, the method comprises the following steps: collection and compression of ventilation air methane, cooling and boosting adsorption of an adsorption tower, pressure drop equalization of the adsorption tower, temperature rise, pressure reduction and desorption of the adsorption tower, pressure rise equalization of the adsorption tower, periodic cycle work of the adsorption tower, preheating of a packed bed of a heat storage furnace, fluidized heat storage oxidation of coal gangue and gas, and waste heat recovery and utilization. According to the invention, safe and efficient enrichment of ventilation air methane can be realized, and fluidized heat storage oxidation coupling utilization of concentrated gas and coal gangue particles can be realized; the oxidation waste heat is used as a generator heat source; the carbon reduction scheme of large-scale separation and concentration-synergistic oxidation-efficient utilization of the oversize coal mine ventilation air methane is formed, the coal industry is assisted to achieve the goal of'two wastes' and sustainable development, and large-flow, low-cost, safe and efficient treatment and utilization of the ventilation air methane discharged by an oversize low-gas mine can be achieved.

The invention relates to a fully mechanized coal mining face respirable dust concentration management limit value determination method, belongs to the technical field of coal mine dust treatment, and is used for solving the problem of inaccurate respirable dust control caused by the fact that a traditional fixed threshold value cannot adapt to a multi-dust-source coupling working condition. The method comprises the following steps: acquiring dust falling efficiency data of multiple dustproof measures, establishing a mathematical model of dustproof parameters and dust concentration, calculating a dynamic management limit value by combining an industrial standard threshold value, and performing self-adaptive adjustment by monitoring and triggering parameters such as spraying pressure and dust removal air volume in real time. Compared with a traditional method, the dynamic limit value enables the respirable dust concentration to be reduced by 40% or above, the multi-measure cooperative dust falling efficiency is improved to 85%, water is saved by 15%-20%, the equipment energy consumption is reduced by 10%, and intelligent and precise dust treatment is achieved.

The invention provides an underground coal mine dust falling device and a using method thereof, and belongs to the technical field of coal mine dust falling. According to the technical scheme, the underground coal mine dust falling device comprises a water storage tank, a water outlet of the water storage tank is communicated with a water inlet of a water pump, a water outlet of the water pump is communicated with a hard pipe, and the hard pipe is sleeved with a supporting frame; a rotating mechanism is arranged on the outer side of the hard pipe, and a lifting mechanism and an adjusting mechanism are arranged on the supporting frame. According to the using method of the underground coal mine dust falling device, the rotating mechanism controls the hard pipe, the supporting frame and the spray head to rotate synchronously, the lifting mechanism controls the supporting frame to drive the spray head to slide up and down along the hard pipe, and the adjusting mechanism controls the spraying angle of the spray head. The device has the beneficial effects that the nozzle can flexibly move in the horizontal direction and the vertical direction, it is guaranteed that close-range space under the device and the periphery of the device are covered by water mist without dead angles, and dust falling blind areas are eliminated.

The invention relates to the technical field of metro platform screen doors, in particular to a novel particulate matter-preventing energy-saving metro platform screen door with an adjustable tuyere, which comprises a metro platform, and a plurality of left-side perforated platform screen doors and right-side perforated platform screen doors are fixedly mounted on two sides of the metro platform respectively; a rotating mechanism is movably connected to one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side, an automatic control system is fixedly connected to one side of one shielding door with holes in the left side, and a left tunnel and a right tunnel are correspondingly arranged on one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side. The automatic control system adjusts the angle of the rotary baffle and closes the holes in the shielding doors on the two sides through a control circuit, on one hand, the filter screen can filter out coarse particles, on the other hand, the shielding doors can block fine particles such as PM2.5, and therefore dispersion of the particles in the tunnel into the platform is reduced, and in summer, due to the fact that the holes of the shielding doors are closed, the shielding doors can not be blocked. The loss of cold air in the platform into the tunnel is reduced, and energy is saved.

The invention discloses an excavation roadway turning construction method and a roadway construction method. According to the method, the turning track is accurately controlled through geological parameter pre-research and surveying and setting-out, and the problems of relaxation and damage caused by track deviation and long surrounding rock exposure time of a traditional turning section are effectively solved in combination with pilot tunnel advanced excavation and dynamic collaborative supporting. Pilot tunnel advanced excavation reserves a space for subsequent expanded excavation, a cutting head of the integrated equipment can horizontally rotate to adapt to curve excavation, and supporting force is dynamically adjusted in cooperation with real-time scanning of surrounding rock deformation data, so that the surrounding rock exposure time in turning section construction is shortened to 5-8 minutes from 40-60 minutes of a traditional process, and the construction efficiency is improved. The wall caving and roof caving risks caused by long-time support-free exposure of the surrounding rock in the turning area are remarkably reduced, meanwhile, it is ensured that the turning radius and the turning angle are matched with the design height through a parameter correction program, and the accuracy and safety of turning section construction are improved.

The invention relates to the technical field of coal mine underground dust prevention and control, in particular to a coal mine dust concentration over-limit spraying and dust-settling device and a control system thereof.The coal mine dust concentration over-limit spraying and dust-settling device comprises a dust sensing array composed of a plurality of dust concentration sensors arranged in a spatially separated mode, a main sensor arranged close to a dust generation source, and a dust concentration sensor arranged close to the dust generation source, the at least two auxiliary sensors are sequentially arranged at a set interval; the wind speed sensing unit is mounted in a preset range of the upwind direction of the main sensor and is used for synchronously capturing real-time wind speed; the partition spraying actuator comprises independent spraying units corresponding to the positions of the sensors, and each unit is provided with a quick-response electromagnetic valve and an atomizing nozzle; the multi-source information fusion controller is connected with the dust sensing array, the wind speed sensing unit and the partition spraying actuator through an industrial field bus; through dynamic threshold setting, dust diffusion path monitoring and prediction interception technologies, the problems of response lag and excessive spraying of a traditional fixed threshold system are solved.

The invention discloses an intelligent integrated automatic pollution discharge, spray and dust suppression system for a coal mine tunnel, and relates to the technical field of automation. The system comprises a double-channel sensing assembly, a central controller, a mine communication link and an integrated pollution discharge spraying terminal group, the central controller obtains a dust image and a ground height image at the same time in combination with the double-channel sensing assembly, generates a roadway working condition grid map, completes dust level marking and ground height marking, extracts a dust cluster and a transition zone on the basis, and loads a pollution discharge component list. Constructing a descending chain from the outer edge of the dust cluster, selecting a ridge chain backbone, finally generating a cooperative control instruction set, issuing the cooperative control instruction set to the integrated pollution discharge spraying terminal group, and carrying out snapshot acceptance check by using a dual-channel sensing assembly after execution. According to the invention, accurate dust control, smooth sewage discharge and high resource utilization rate can be ensured, and the stability and long-term effectiveness of system operation can be maintained in a complex environment.

The invention relates to the technical field of mining local fan air duct air volume self-adaptive adjusting equipment, in particular to a mining local fan air duct air volume self-adaptive adjusting device. According to the technical scheme, the self-adaptive adjusting device for the air volume of the air duct of the mining local fan comprises a fan body, a radiator, an installation support, an electric adjusting air door, an air storage bin, the air duct, an environment detection module, an air speed detection module and a control module, the radiator is arranged on one side of the fan body, and the installation support is arranged on the bottom face of the fan body; an electric adjusting air door is arranged on one side of the ventilator main body; the environment sensing module is arranged, triple redundancy design is adopted, when the gas concentration is abnormal, whether the gas concentration is a spontaneous combustion symptom or not can be discriminated in combination with temperature data, or the coal rock collapse risk is pre-judged through the dust concentration change, and the safety interlocking response time is shortened.

The invention relates to the technical field of mine environment-friendly construction, in particular to pollution control spraying and dust falling equipment for mine engineering construction.The pollution control spraying and dust falling equipment comprises a main body, an air duct is hinged to the upper portion of the main body, an atomization device is arranged at one end of the air duct, and the atomization device comprises a regulation and control mechanism and a fixing disc, and the fixing disc is fixedly connected with the end of the air duct; the fixing disc comprises an installation disc fixedly connected with the fixing disc, a water supply groove is formed in the side, close to the fixing disc, of the installation disc, a plurality of installation grooves which are arranged in a concentric nested mode are formed in the side, away from the fixing disc, of the installation disc, regulation and control rings are rotationally connected into the installation grooves, and first butt joint teeth are arranged outside the regulation and control rings. The driving motor drives the driving gear, so that the regulation ring rotates, then the butt joint gear is driven, the butt joint bolt moves along the curved groove, the nozzle assembly control block opening is continuously adjusted in a stepless mode, the atomization particle size is accurately adjusted, the dust falling efficiency is improved, and the device is suitable for various kinds of flying dust.

The invention relates to the technical field of hard rock drilling construction, in particular to a rock breaking hob, a shield tunneling machine cutterhead and a shield tunneling machine. The rock breaking hob comprises a cutter shaft, an annular cutter body and a plurality of pressurizing assemblies; an annular cavity communicated with an external high-pressure water source is formed in the cutter shaft; the annular cutter body is rotationally arranged on the cutter shaft, and a plurality of blind holes are formed in the annular cutter body; the pressurizing assembly comprises a compression block, a plugging block and a first elastic piece; the compression block is in sealed sliding connection with the inner wall of the blind hole to form a compression cavity, and a plurality of first channels used for communicating the compression cavity with the annular cavity are formed in the annular cutter body; a sliding groove, a communicating hole and a water spraying hole are formed in the compression block; the sliding groove communicates with the compression cavity through the communicating hole. The sliding groove communicates with the end face of one end of the compression block through the water spraying hole. The plugging block is slidably connected with the sliding groove and blocks the water spraying hole when located at the end, close to the central axis of the annular cutter body, in the sliding groove. The first elastic piece is used for enabling the compression block to pop out of the blind hole. The rock breaking device has the effects of reducing water source waste and improving the rock breaking efficiency.

The invention relates to a long-pressure short-pumping dust removal system for a fully-mechanized excavation face of a coal mine with self-adaptive matching parameters, and belongs to the technical field of coal mine dust prevention. In order to solve the problems of parameter matching lag, air duct positioning misalignment and emergency response delay of an existing dust removal system, a dust concentration sensor, a gas sensor, a laser distance measuring sensor and an area controller cooperate to construct a dynamic matching model of the press-in air volume, the dust suction air volume and the wall-attached air duct distance; + / -0.2 m high-precision positioning is realized by adopting a servo traction mechanism, and air distribution is adjusted in real time in combination with a nonlinear control algorithm. According to the system, the dust removal efficiency is improved to 85% or above, the gas standard exceeding response time is shortened to be within 90 seconds, the positioning error is reduced by 80%, the fan energy consumption is reduced by 18%-22%, and efficient and safe production of a coal mine is effectively guaranteed.

The invention relates to the technical field of roadway dust removal, and discloses a metal mine underground roadway dust removal device which comprises a driving box, a dust removal box arranged at the top of the driving box, and a water tank fixedly connected to one side of the driving box. The collecting box is fixedly connected to the top of the driving box; the dust removal assembly is arranged in the dust removal box and used for collecting dust in the roadway, and the dust removal assembly comprises a plurality of dust removal rods fixedly connected to the interior of the dust removal box and an exhaust fan fixedly communicated to one side of the dust removal box; through use of the dust removal assembly, a driving air cylinder is started through a control panel, the driving air cylinder drives a cross-shaped push frame to move through a telescopic rod, the cross-shaped push frame extrudes water in a water tank into a dust removal box through an extrusion block, then the driving air cylinder is restored to the original state through the control panel, and an exhaust fan is started; and an exhaust fan sucks outside dust into the dust removal box, so that the dust is attached to the surface of the dust removal rod, and the effect of conveniently removing dust is achieved.

The invention provides a wet-type dust removal device for an underground coal mine and a using method thereof, and belongs to the technical field of dust removal, and the technical scheme is that the wet-type dust removal device for the underground coal mine comprises a barrel, a mounting ring is fixed to the open end of the barrel, a filter screen is arranged in the mounting ring, and a mounting block is fixed to the outer side face of the filter screen; a connecting hole is formed in the wall thickness of the side wall of the barrel, a connecting rod is installed in the connecting hole, a driving mechanism is arranged in the barrel, and the driving mechanism can control the connecting rod to periodically impact the installation block. An air draft mechanism and a spraying mechanism are further arranged in the barrel body, the air draft mechanism can suck air into the barrel body from the filter screen, the spraying mechanism can spray water mist into the barrel body, and a flocculation mechanism is arranged at the top of the barrel body and can periodically drip a flocculating agent into the barrel body. The device is based on an automatic cleaning mode of periodic vibration, and the problem that a filter screen is blocked by dust chippings during mechanical extrusion cleaning of a traditional brush plate is solved.

The invention belongs to the technical field of environmental protection, and particularly relates to a coal mine dust removal device which comprises an air inlet pipe, the air inlet pipe is transversely arranged and comprises a main body part, an air inlet part and a flow slowing part, the air inlet part and the flow slowing part are arranged at the two ends of the main body part respectively, and the flow slowing part is larger than the main body part in size; the spiral blade is eccentrically arranged in the main body part in the axial direction, the bottom of the spiral blade is in clearance fit with the bottom of the main body part, the spiral blade is driven by a power mechanism to rotate, and the conveying direction of the spiral blade is consistent with the airflow direction in the main body part; the connecting pipe is close to the flow slowing part, is arranged above the main body part and is perpendicular to the main body part, and a filtering mechanism is transversely arranged in the connecting pipe; the air outlet pipe is connected to one end of the connecting pipe, and an induced draft fan is arranged in the air outlet pipe; and the dust collection bin is arranged below the slow flow part in a communicating manner. The spiral blade is eccentrically arranged, the airflow direction can be changed through the spiral blade, and the problem of blockage caused by accumulation of solid particles in the air inlet pipe can be solved.

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 utility model discloses an energy-saving type dust micro-power grading purification and recovery device which is formed by combining a dust particle settling box (4), a filtering dust removal purification box (5), a dust discharge port (7), a dust hopper (8), an electric dust discharge valve (9) and supporting legs (10). A dust-containing airflow inlet (1) is formed in the upper part of the dust particle settling box (4), and an air supply outlet (2) is formed in the outer side of the lower part of the dust particle settling box (4); a purified gas outlet (3) is formed in the top of the dust particle settling box (4), and a composite filtering assembly (6) is arranged on the upper portion in the dust particle settling box (4). According to the utility model, the combined action of multiple acting force fields such as gravity, inertia force, collision action, Brown diffusion, coagulation action and retention action is utilized to realize micro-power sedimentation, filtration, dust removal and graded purification of dust of the mine crushing system, and the dust removal device has the advantages of high dust removal efficiency, low energy consumption, low operating cost, simple structure and convenience in installation; the dust removal efficiency is greatly improved, the comprehensive dust control and removal effect is remarkable, and the energy-saving effect is remarkable.

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 belongs to the technical field of bag type dust collection, and discloses an ore processing pulse bag type dust collector for a mine field, the ore processing pulse bag type dust collector comprises a support, a cleaning bin and a dust hopper, the left bottom and the right top of the cleaning bin are sequentially provided with an air inlet pipe and an exhaust pipe, and the inner wall of the cleaning bin is provided with a partition plate; a plurality of groups of filter bags which are distributed in a matrix are fixedly mounted at the top of the partition plate, a transfer bin is fixedly mounted at the bottom of the inner wall of the cleaning bin, and an air inlet which communicates with and coincides with the air inlet pipe is formed in the left side of the transfer bin. According to the device, high-pressure dust-containing air flow from the air inlet pipe is converged through the inner cavity of the transfer bin and finally is obliquely and upwards sprayed out through the air outlet pipe, spiral ascending air flow from bottom to top is formed in the inner cavity of the cleaning bin, and the tip movement direction of the dust-containing air flow is spirally changed, so that any part of the outer surface of the filter bag can be uniformly covered; therefore, the uniformity of the filter bag during filtering is ensured, and the maintenance period of the device is effectively prolonged.

The invention relates to the technical field of underground structures, in particular to a buffer chamber system for vertical feeding of mine materials, an excavation chamber is designed in a roadway near a feeding hole in the direction of the feeding hole to serve as a buffer channel, a buffer bottom table is arranged in the buffer channel, the surface of the buffer bottom table is a detachable steel plate, and the surface of the buffer bottom table is a 45-degree inclined plane; i-shaped steel is used for pouring and reinforcing the lower part with concrete, and a spring buffer device is mounted below the feeding hole for proper pressure relief. The problems of buffering, pressure relief and dust prevention after ground materials are vertically put into a well are solved, meanwhile, automatic collection after the materials are put can be achieved, the device can serve as a temporary buffering device to store part of the materials, and the materials are conveyed to a material demand site after being received.