Fully mechanized coal mining face intelligent dustproof management and control platform and display system

Abstract

The invention relates to an intelligent dustproof management and control platform and display system for a fully mechanized coal mining face, and belongs to the technical field of dustproof management and control, and the platform comprises a data collection module which is used for collecting the operation data of a dust concentration sensor arranged in the fully mechanized coal mining face and each dustproof system; the dust concentration management limit value setting module is used for determining the management limit value of the respiratory dust concentration of the fully mechanized coal mining face according to the relationship between the dust falling efficiency of each dustproof system and the process technical parameters; the dust falling efficiency control module is used for adjusting key parameters influencing the dust falling efficiency in each dustproof system; the intelligent dust prevention and fall decision module is used for carrying out traceability analysis on dust with the concentration exceeding the standard, determining a regulation and control strategy and starting corresponding dust prevention equipment in a targeted manner to carry out nearby dust removal; and the simulation and display module is used for performing real-time simulation and visual display on the acquired information, processing process data and result data.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of dust control and relates to an intelligent dust control platform for fully mechanized mining faces and a display system. BACKGROUND

[0002] With the deep mining of coal resources, dust control at fully mechanized mining faces has become an important link to protect the health and safety of miners. In recent years, traditional single dust control measures such as spray dust suppression, ventilation dilution, and water curtain dust capture have been continuously optimized and upgraded. At the same time, various dust sensors and controllers for on-site monitoring and execution equipment have gradually become popular. With the help of Internet of Things, big data, and artificial intelligence technology, domestic and foreign scholars have begun to explore dust control solutions based on data and intelligence, enabling dust control to shift from passive response to active early warning and dynamic adjustment.

[0003] Current dust control methods for fully mechanized mining faces in mines include spraying water mist at dust sources through fixed or mobile spray devices to achieve the agglomeration and settling of dust particles on the coal mining machine or running equipment, installing local adsorption or sealing devices on dust sources for local capture, using hydraulic supports or partitions to change airflow direction or regional pressure to isolate dust to safe areas, and arranging high-pressure water curtain nets in return airways or working faces to intercept and purify dust moving with the airflow. In these measures, most solutions only work on a single dust source or a single control link, often relying on manual experience to set process parameters and lacking real-time online multi-source information fusion and linkage control capabilities.

[0004] These existing technologies are mostly isolated hardware or single systems, and cannot achieve coordinated scheduling and optimization of multiple dust control methods. Key parameters such as spray pressure, quantity, and sealing degree are set by experience or fixed values, making it difficult to adapt to dynamic changes in production conditions. After dust exceeds the limit, only manual inspection or pre-set threshold alarms can be relied on, and automatic analysis of dust sources and implementation of nearby precise control are not possible. There is a lack of real-time simulation and visual display of multi-source information such as dust concentration distribution, control effect, and equipment operating status, which is not conducive to decision-making and plan adjustment by management. Therefore, there is an urgent need to build a comprehensive dust control platform that can achieve real-time collection of multi-source information at fully mechanized mining faces, dynamic threshold management, intelligent decision-making and linkage control, and full-domain simulation and visual display. SUMMARY

[0005] In view of the above, the purpose of the present application is to provide an intelligent dust control platform for fully mechanized mining faces and a display system.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] An intelligent dust control platform for fully mechanized mining faces and a display system, comprising:

[0008] Data acquisition module: used for collecting the dust concentration sensor arranged in the fully mechanized working face and the operation data of each dust prevention system;

[0009] Dust concentration management limit setting module: used for determining the respirable dust concentration management limit of the fully mechanized working face according to the relationship between the dust fall efficiency of each dust prevention system and the process technical parameters;

[0010] Dust fall efficiency control module: used for adjusting the key parameters affecting the dust fall efficiency in each dust prevention system;

[0011] Intelligent dust fall prevention decision module: used for tracing analysis of the dust with concentration exceeding the standard, determining the control strategy, and starting the corresponding dust removal equipment for nearby dust removal;

[0012] Simulation and display module: used for real-time simulation and visual display of the collected information, process data and result data.

[0013] Further, the dust source of the fully mechanized working face includes the coal cutting by the shearer drum, the column lowering and support moving of the hydraulic support, the transfer transportation and the working face return air flow; wherein the corresponding treatment measures of the coal cutting by the shearer drum include the intelligent spray three-dimensional sealing dust fall of the shearer and the on-board control dust removal of the shearer; the corresponding treatment measure of the column lowering and support moving of the hydraulic support is the self-adaptive dust blocking of the hydraulic support; the corresponding treatment measure of the transfer transportation is the non-contact automatic spray wetting coal body dust fall; and the corresponding treatment measure of the working face return air flow is the full-face water film net dust capture and purification of the roadway.

[0014] Further, the dust fall efficiency control module analyzes the corresponding treatment measures of different dust sources, obtains the key influencing factors of the dust fall efficiency of different treatment measures as the adjustable key parameters, and establishes the mathematical model between the dust prevention effect of single measure and the influencing factors through field test.

[0015] Further, for the intelligent spray three-dimensional sealing dust fall system of the shearer, the target parameter regulated by the dust fall efficiency control module is the respirable dust concentration at the breathing height of the personnel working area, the control parameter is the key process parameter of the spray dust fall system, after the nozzle is determined, including the spray pressure, the number of simultaneously opened spray and the spray state, and the essence of the control is to regulate the droplet size, the spray flow and the droplet speed; in order to realize the accurate regulation and control of the intelligent spray three-dimensional sealing dust fall system of the shearer in the fully mechanized working face, the dust fall efficiency control module theoretically studies the influence law of the droplet size, the spray flow and the droplet speed on the dust fall efficiency of different particle size dust, guides the selection of the nozzle and the design of the spray system; and in engineering practice, the law between the dust fall efficiency of the target fully mechanized working face and the spray pressure, the number of simultaneously opened spray is studied, and the regulation and control mathematical model of the intelligent spray three-dimensional sealing dust fall system of the shearer is determined in combination with the dust concentration management limit.

[0016] Further, for the coal mining machine on-board dust control system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the coal mining machine on-board dust control system, including the air suction volume of the on-board dust collector and the air suction port position; the dust fall efficiency control module studies the influence law of the air suction volume of the on-board dust collector and the air suction port position on dust transport and dust source capture effect, guides the design of the coal mining machine on-board dust control system, and determines the regulation and control mathematical model of the coal mining machine on-board dust control system in combination with the dust concentration management limit value.

[0017] Further, for the self-adaptive hydraulic support dust barrier system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the self-adaptive hydraulic support dust barrier system, including the spray pressure and the spray state, and the essence of the control is to regulate the ejector air volume, the mist particle size, the spray flow and the mist particle speed; the dust fall efficiency control module studies the influence law of the ejector air volume, the mist particle size, the spray flow and the mist particle speed on the dust fall efficiency of dust of different particle sizes, guides the design of the self-adaptive hydraulic support dust barrier system; studies the law between the dust fall efficiency of the fully-mechanized coal mining face and the spray pressure, and determines the regulation and control mathematical model of the self-adaptive hydraulic support dust barrier system in combination with the dust concentration management limit value.

[0018] Further, for the non-contact automatic spray wetting coal body dust fall system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the non-contact automatic spray wetting coal body dust fall system, including the number of simultaneously opened sprays, the spray spacing, the spray flow and the spray state; the dust fall efficiency control module studies the influence law of the spray number, the spray spacing, the spray flow and the spray state on the dust fall efficiency of dust of different particle sizes, guides the design of the non-contact automatic spray wetting coal body dust fall system, and determines the regulation and control mathematical model of the non-contact automatic spray wetting coal body dust fall system in combination with the dust concentration management limit value.

[0019] Further, for the roadway full-section water film net dust capture and purification system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the roadway full-section water film net dust capture and purification system, including the spray water volume, the dust capture net coverage section size, the dust capture net aperture and the air flow speed; the dust fall efficiency control module studies the influence law of the spray water volume, the dust capture net coverage section size, the dust capture net aperture and the air flow speed on the dust fall efficiency of dust of different particle sizes, guides the design of the roadway full-section water film net dust capture and purification system, and determines the regulation and control mathematical model of the roadway full-section water film net dust capture and purification system in combination with the dust concentration management limit value.

[0020] Further, the intelligent dust prevention decision module specifically comprises:

[0021] Dust concentration over-limit judgment module: for comparing the real-time monitored dust concentration of the fully mechanized coal mining face with the dust concentration management limit value, judging whether the dust concentration is over-standard;

[0022] Dust source tracing module: based on the dust production capacity of the fully mechanized coal mining face and the dust migration influence law, combined with the working condition operation parameters of the fully mechanized coal mining face, the dust with over-standard concentration is analyzed to determine the dust source;

[0023] Control strategy determination module: for determining specific control strategies according to the dust reduction effect mathematical model of single measure;

[0024] Dust reduction system control module: based on the determined specific control strategy, sending instructions to the related dust reduction system to realize dust reduction nearby.

[0025] Further, the simulation and display module is used to realize real-time simulation and visual display of the dust concentration of the fully mechanized coal mining face in the whole space, realize real-time display of multi-source information of the fully mechanized coal mining face, and realize real-time online display of the operation condition, main technical parameters, single dust reduction efficiency and comprehensive dust reduction efficiency of the dust prevention equipment.

[0026] The beneficial effects of the present application are that the present application integrates multi-source information such as dust concentration and equipment operation state, realizes real-time visualization and decision support of dust prevention data, and improves the intelligent level of dust prevention management, and the specific effects are as follows:

[0027] (1) Improve dust reduction efficiency: through real-time monitoring and data fusion of the dust concentration of the working face, the state of the equipment and the environmental parameters, combined with the dynamic adjustment of the process parameters such as spraying, dust removal and ventilation, the rapid aggregation and settlement of dust particles are realized, and the overall dust reduction efficiency is improved compared with the traditional scheme.

[0028] (2) Reduce energy consumption and water consumption: based on dynamic threshold management, only when the dust concentration approaches the alarm limit, the corresponding dust prevention equipment is started, avoiding long-time and high-intensity blind spraying and continuous operation, significantly reducing water resources and energy consumption, and saving operation cost.

[0029] (3) Realize precise management: intelligently analyze the position of the over-standard dust source, automatically link the nearby dust removal equipment for local management, replace manual inspection and manual adjustment, improve the response speed, and shorten the average response time of dust over-standard events.

[0030] (4) Improve the level of safety management: the three-dimensional simulation visualization platform directly displays the dust distribution, equipment operation and management effect, the management personnel can make situation judgment and exercise plans through the simulation interface, reduce human decision errors, and further reduce the risk of dust explosion and occupational diseases.

[0031] (5) Enhance system scalability: the application adopts modular design, can access new type dust sensor, dust removal device and algorithm model flexibly, provides convenient guarantee for subsequent upgrade and expansion, meets long-term development demand of mine automation and intelligentization.

[0032] Other advantages, objects, and features of the application will be in part apparent and in part pointed out below in the specification, as some of such contributions to the art will be presently stated in the following specification and as others will be observed once a contribution to the art has been made by the application. The objects and other advantages of the application will be realized and attained by means of the elements and combinations particularly pointed out in the following description. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the drawings, in which:

[0034] Figure 1 It is an intelligent dust prevention system for a fully mechanized coal mining face and a schematic diagram of logical relationship between control parameters thereof;

[0035] Figure 2 It is a schematic diagram of control logic relationship of the intelligent spraying three-dimensional closed dust reduction system of the coal mining machine for the fully mechanized coal mining face;

[0036] Figure 3 It is a schematic diagram of control process of the intelligent dust prevention system for the fully mechanized coal mining face;

[0037] Figure 4 It is a dust traceability analysis and result display diagram. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described below through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed in different views and applications without departing from the spirit of the present application. It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the diagrams only show the components related to the present application without drawing the number, shape and size of the components in actual implementation. The type, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type can also be more complex.

[0039] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the diagrams only show the components related to the present application without drawing the number, shape and size of the components in actual implementation. The type, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type can also be more complex.

[0040] In the following description, numerous specific details are discussed in order to provide a thorough understanding of embodiments of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without these specific details. In other instances, well-known structures and devices are not described in detail in order to avoid obscuring embodiments of the present application.

[0041] Embodiment 1:

[0042] The present application provides an intelligent dust control platform and display system for a fully mechanized coal mining face. The intelligent dust control technology for a fully mechanized coal mining face is the core of realizing intelligent dust control for a fully mechanized coal mining face. The present application first carries out research on the respirable dust concentration management limit value for a fully mechanized coal mining face to provide a judgment standard for intelligent regulation and control of a dust control system. Then, research is carried out on a mathematical model for intelligent regulation and control of a dust control system to master the quantitative relationship between the dust reduction effect of various dust reduction measures and their key process parameters. Then, research is carried out on the multi-parameter coupling operation logic and control strategy of an intelligent dust control system for a fully mechanized coal mining face to determine an intelligent control strategy suitable for the dust control needs of a fully mechanized coal mining face in Zhangjiakou Coal Mine and develop corresponding control software and regional controllers. Finally, research is carried out on an intelligent control platform for a fully mechanized coal mining face to realize real-time display of dust control information and deep-level data information based on the above information.

[0043] For the research on the respirable dust concentration management limit value for a fully mechanized coal mining face, the present application determines the respirable dust concentration management limit value for a fully mechanized coal mining face based on the research results of key technologies for efficient dust control, i.e. the relationship between the dust reduction efficiency of each dust control system and the process parameters obtained through field tests, and in combination with the current industry standards, to serve as the judgment standard for subsequent intelligent regulation and control of a dust control system for a fully mechanized coal mining face.

[0044] For the research on the mathematical model for intelligent regulation and control of a dust control system, the main dust sources for a fully mechanized coal mining face include coal cutting by a shearer drum, column lowering and frame shifting of hydraulic supports, transfer and transportation, and return air flow of a working face. The corresponding control measures include three-dimensional closed dust reduction by intelligent spraying of a shearer, on-board dust removal control of a shearer, adaptive dust blocking of a hydraulic support, non-contact automatic spraying for wetting coal body dust reduction, and dust capture and purification by a full-face water film net in a roadway. The project first analyzes different control measures to master the key influencing factors of the dust reduction efficiency of different control measures, i.e. the key parameters that can be adjusted later, which are briefly expressed as shown in Table 1, and then obtains the influencing law through field tests to establish a mathematical model between the dust reduction effect of a single measure and the influencing factors. Figure 1

[0045] ​Taking the intelligent spraying three-dimensional sealing dust fall system of the coal mining machine in the fully mechanized coal mining face as an example, the target parameter of the regulation and control is the respirable dust concentration C at the breathing height of the personnel operation area, the control parameter is the key process parameter of the spraying dust fall system, after the nozzle is determined, mainly including the spraying pressure P, the number of simultaneously opened spraying N (assuming that the number of front and rear spraying is consistent), and the spraying state OFF / ON, the essence is to regulate and control the mist particle size d, the spraying flow Q and the mist particle speed v. The logic relationship is as shown in Figure 2 .

[0046] In order to realize the accurate regulation and control of the intelligent spraying three-dimensional sealing dust fall system of the coal mining machine in the fully mechanized coal mining face, it is necessary to theoretically study the influence law of the mist particle size d, the spraying flow Q and the mist particle speed v on the dust fall efficiency of dusts with different particle sizes, to guide the selection of the nozzle and the design of the spraying system; further study the law between the dust fall efficiency of the target fully mechanized coal mining face and the spraying process parameters (spraying pressure, number of simultaneously opened spraying) in engineering practice, and determine the regulation and control mathematical model of the single dust prevention system in combination with the dust concentration management limit value.

[0047] For the research on the multi-parameter coupling operation logic and control strategy of the intelligent dust prevention system in the fully mechanized coal mining face, the present application researches the operation logic and control strategy of the intelligent dust prevention system based on the comprehensive big data dust source analysis result, so as to achieve the autonomous decision of the intelligent dust prevention system and start the dust removal equipment for nearby dust removal in a targeted manner. The specific process is as shown in Figure 3 .

[0048] On the basis of the above research, the intelligent dust prevention and control platform of the fully mechanized coal mining face is developed, the real-time simulation and visual display of the dust concentration in the whole space of the fully mechanized coal mining face are realized, the display of the multi-source information of "person, machine and environment" in the fully mechanized coal mining face is realized, the real-time online display of the operation condition, the main technical parameter, the single dust fall efficiency and the comprehensive dust fall efficiency of the dust fall equipment is realized, and the data information obtained based on the above data analysis is realized.

[0049] Embodiment 2

[0050] In this embodiment, an intelligent dust prevention and control platform and display system of a fully mechanized coal mining face is provided, comprising:

[0051] A data acquisition module is used to acquire the running data of the dust concentration sensor arranged in the fully mechanized coal mining face and each dust prevention system.

[0052] A dust concentration management limit value setting module is used to determine the respirable dust concentration management limit value of the fully mechanized coal mining face according to the relationship between the dust fall efficiency and the process technical parameter of each dust prevention system. Specifically, the maximum allowable concentration L s of the respirable dust (such as 1.5 mg / m 3), as a static reference value; then set the safety factor a (typical value 0.8), early warning threshold L p = a·L s ; then according to the real-time monitoring of the ventilation V act and the design ventilation V des ratio β = V act / V des , the threshold is dynamically corrected, and the management limit L m = L p ·β; L m is issued to the system, and its value is used as the dynamic threshold for online monitoring alarm and equipment linkage control; when the real-time concentration C real ≥ L m , trigger the early warning and automatically start the corresponding dust removal equipment.

[0053] Dust removal efficiency control module: for adjusting the key parameters affecting the dust removal efficiency in each dust prevention system;

[0054] Intelligent dust prevention decision module: for tracing analysis of dust concentration exceeding the standard, determining the control strategy, and starting the corresponding dust removal equipment for nearby dust removal;

[0055] Simulation and display module: the simulation and display module is used to realize real-time simulation and visual display of dust concentration in the whole space of the fully mechanized coal mining face, realize real-time display of multi-source information of the fully mechanized coal mining face, and realize real-time online display of the operation condition, main technical parameters, single dust removal efficiency and comprehensive dust removal efficiency of the dust prevention equipment.

[0056] In this embodiment, the dust sources of the fully mechanized coal mining face include the coal cutting of the shearer drum, the column lowering and support moving of the hydraulic support, the transfer and transportation, and the return air flow of the working face. The corresponding control measures of the coal cutting of the shearer drum include intelligent three-dimensional closed dust removal of the shearer spray and on-board control dust removal of the shearer. The corresponding control measure of the column lowering and support moving of the hydraulic support is self-adaptive dust prevention of the hydraulic support. The corresponding control measure of the transfer and transportation is non-contact automatic spray wetting coal body dust removal. The corresponding control measure of the return air flow of the working face is the full-face water film net dust capture and purification of the roadway.

[0057] The dust removal efficiency control module analyzes the corresponding control measures of different dust sources, obtains the key influencing factors of the dust removal efficiency of different control measures as adjustable key parameters, obtains the influencing law through field test, and establishes a mathematical model between the dust prevention effect of single measure and the influencing factors.

[0058] For the intelligent spraying three-dimensional closed dust fall system of the coal mining machine, the target parameter regulated by the dust fall efficiency control module is the respirable dust concentration at the breathing zone height of the personnel working area, the control parameter is the key process parameter of the spraying dust fall system, after the nozzle is determined, including the spraying pressure, the number of simultaneously opened spraying and the spraying state, the essence of the control is to regulate the droplet size, the spraying flow and the droplet speed; in order to realize the accurate regulation and control of the intelligent spraying three-dimensional closed dust fall system of the fully mechanized coal mining face, the dust fall efficiency control module theoretically studies the influence law of the droplet size, the spraying flow and the droplet speed on the dust fall efficiency of dusts with different particle sizes, guides the selection of the nozzle and the design of the spraying system; in the engineering practice, the law between the dust fall efficiency of the target fully mechanized coal mining face and the spraying pressure, the number of simultaneously opened spraying is studied, and the regulation and control mathematical model of the intelligent spraying three-dimensional closed dust fall system of the coal mining machine is determined in combination with the dust concentration management limit value. In this embodiment, the spraying dust fall effect mathematical model of the intelligent spraying three-dimensional closed dust fall system of the coal mining machine is as follows:

[0059]

[0060] In the formula: η is the dust fall efficiency, %; U is the relative speed of the mist droplet and the dust, m / s; Q is the volume flow of the mist droplet, m3 / s; x is the effective action zone length of the spraying, m; Dc is the droplet size, m; Ud is the movement speed of the mist droplet, m / s; A is the cross-sectional area of the spraying effective action zone, m2; Ug is the speed of the dust flow with the air, m / s; B0 is the experimental constant including the interception and diffusion effect, dimensionless; B is the Cunningham slip correction coefficient, dimensionless; dp is the dust particle size, m; ρp is the density of the dust, kg / m3; μg is the dynamic viscosity of the gas, Pa·s.

[0061] For the coal mining machine on-board control dust removal system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameter is the key process parameter of the coal mining machine on-board control dust removal system, including the air suction volume of the on-board dust remover and the air suction port position; the dust fall efficiency control module studies the influence law of the air suction volume of the on-board dust remover and the air suction port position on the dust transport and the dust source capture effect, guides the design of the coal mining machine on-board control dust removal system, and determines the regulation and control mathematical model of the coal mining machine on-board control dust removal system in combination with the dust concentration management limit value.

[0062] For the adaptive hydraulic support dust barrier system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the adaptive hydraulic support dust barrier system, including the spray pressure and the spray state, and the essence of the control is to regulate the ejector air volume, the mist particle size, the spray flow and the mist particle speed; the dust fall efficiency control module studies the influence law of the ejector air volume, the mist particle size, the spray flow and the mist particle speed on the dust fall efficiency of dusts of different particle sizes, guides the design of the adaptive hydraulic support dust barrier system, and studies the law between the dust fall efficiency of the fully-mechanized coal mining face and the spray pressure, to determine the regulation mathematical model of the adaptive hydraulic support dust barrier system in combination with the dust concentration management limit value.

[0063] For the non-contact automatic spray wetting coal body dust fall system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the non-contact automatic spray wetting coal body dust fall system, including the number of simultaneously opened sprays, the spray spacing, the spray flow and the spray state; the dust fall efficiency control module studies the influence law of the spray number, the spray spacing, the spray flow and the spray state on the dust fall efficiency of dusts of different particle sizes, guides the design of the non-contact automatic spray wetting coal body dust fall system, and determines the regulation mathematical model of the non-contact automatic spray wetting coal body dust fall system in combination with the dust concentration management limit value.

[0064] For the roadway full-section water film net dust capture and purification system, the target parameters regulated by the dust fall efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel position information, the control parameters are the key process parameters of the roadway full-section water film net dust capture and purification system, including the spray water amount, the dust capture net coverage section size, the dust capture net aperture and the air flow speed; the dust fall efficiency control module studies the influence law of the spray water amount, the dust capture net coverage section size, the dust capture net aperture and the air flow speed on the dust fall efficiency of dusts of different particle sizes, guides the design of the roadway full-section water film net dust capture and purification system, and determines the regulation mathematical model of the roadway full-section water film net dust capture and purification system in combination with the dust concentration management limit value.

[0065] In the embodiment, the intelligent dust fall prevention decision module specifically includes:

[0066] The dust concentration over-limit judgment module is used to compare the real-time monitored dust concentration of the fully-mechanized coal mining face with the dust concentration management limit value, to judge whether the dust concentration is over the limit;

[0067] The dust source tracing module is used to trace and analyze the dust with over-standard concentration based on the dust production capacity of the fully-mechanized coal mining face and the dust migration influence law, in combination with the working condition operation parameters of the fully-mechanized coal mining face, to determine the dust source;

[0068] The regulation strategy determining module is configured to determine a specific regulation strategy according to the single measure dust-settling effect mathematical model; and the dust-settling system regulation module is configured to send an instruction to a relevant dust-settling system based on the determined specific regulation strategy, so as to realize nearby dust settling.

[0069] In the embodiment, the dust source tracing module obtains the real-time dust concentration distribution at the breathing zone height of the personnel working area of the fully mechanized coal mining face and the real-time dust concentration distribution under the condition of the separate action of the coal cutter coal cutting and the column lowering and rack moving dust source based on the data obtained through real-time monitoring, in combination with the dust production capacity of the fully mechanized coal mining face and the dust migration influence law and in combination with other dust prevention related information perceived. The real-time dust concentration distribution is displayed in real time through the simulation and display module, and the display result is as shown in Figure 4

[0070] In the above embodiments, the specification refers to "this embodiment" to indicate that the specific features, structures or characteristics described in connection with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "this embodiment" do not necessarily all refer to the same embodiment.

[0071] In the above embodiments, the specification refers to "this embodiment" to indicate that the specific features, structures or characteristics described in connection with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "this embodiment" do not necessarily all refer to the same embodiment.

[0072] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and all should be included in the scope of the claims of the present application.​

Claims

1. An intelligent dust control platform and display system for fully mechanized mining faces, characterized in that: include: Data acquisition module: used to collect operational data from dust concentration sensors and various dust control systems located within the longwall mining face; Dust Concentration Management Limit Setting Module: Used to determine the management limit for respirable dust concentration in fully mechanized mining faces based on the relationship between the dust reduction efficiency of each dust control system and process parameters; Dust suppression efficiency control module: used to adjust key parameters affecting dust suppression efficiency in various dust control systems; Intelligent dust control decision module: used to trace and analyze the source of dust exceeding the standard, determine the control strategy, and activate the corresponding dust control equipment for nearby dust removal. Simulation and Display Module: Used for real-time simulation and visualization of collected information, processing data, and result data.

2. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: The dust sources in the fully mechanized mining face include coal cutting by the coal shearing machine drum, hydraulic support column lowering and shifting, transfer and transportation, and the return airflow of the working face. The control measures for coal cutting by the coal shearing machine drum include intelligent spray three-dimensional sealed dust suppression and on-board dust control of the coal shearing machine. The control measures for hydraulic support column lowering and shifting are adaptive hydraulic support dust blocking. The control measures for transfer and transportation are non-contact automatic spray wetting of coal body for dust suppression. The control measures for the return airflow of the working face are full-section water film net dust collection and purification in the roadway.

3. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: The dust reduction efficiency control module analyzes the treatment measures corresponding to different dust sources, obtains the key influencing factors of the dust reduction efficiency of different treatment measures, and uses them as adjustable key parameters; it also obtains the influencing laws through field tests and establishes a mathematical model between the dust prevention effect of a single measure and the influencing factors.

4. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: For the intelligent spray three-dimensional closed dust suppression system of coal mining machines, the target parameter regulated by the dust suppression efficiency control module is the respirable dust concentration at the breathing zone height of the personnel working area. The control parameters are the key process parameters of the spray dust suppression system. After the nozzles are determined, these include spray pressure, the number of sprays opened simultaneously, and the spray state. The essence of control is to regulate the mist particle size, spray flow rate, and mist particle velocity. To achieve precise regulation of the intelligent spray three-dimensional closed dust suppression system of coal mining machines in fully mechanized mining faces, the dust suppression efficiency control module theoretically studies the influence of mist particle size, spray flow rate, and mist particle velocity on the dust suppression efficiency of dust with different particle sizes, guiding the selection of nozzles and the design of the spray system. In engineering practice, it studies the relationship between the target dust suppression efficiency of the fully mechanized mining face and the spray pressure and the number of sprays opened simultaneously, and determines the regulation mathematical model of the intelligent spray three-dimensional closed dust suppression system of coal mining machines in combination with dust concentration management limits.

5. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: For the onboard dust control and removal system of the coal mining machine, the target parameters regulated by the dust reduction efficiency control module are the concentration of respirable dust at the breathing zone height of the personnel working area and the personnel's location information. The control parameters are the key process parameters of the onboard dust control and removal system of the coal mining machine, including the air volume of the onboard dust collector and the position of the air inlet. The dust reduction efficiency control module studies the influence of the air volume of the onboard dust collector and the position of the air inlet on dust movement and the dust source capture effect, guides the design of the onboard dust control and removal system of the coal mining machine, and determines the control mathematical model of the onboard dust control and removal system of the coal mining machine in combination with the dust concentration management limit.

6. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: For the adaptive hydraulic support dust control system, the target parameters regulated by the dust reduction efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel's location information. The control parameters are the key process parameters of the adaptive hydraulic support dust control system, including spray pressure. The essence of control is to regulate the ejector air volume, mist particle size, spray flow rate, and mist particle velocity. The dust reduction efficiency control module studies the influence of ejector air volume, mist particle size, spray flow rate, and mist particle velocity on the dust reduction efficiency of dust with different particle sizes, guiding the design of the adaptive hydraulic support dust control system. It studies the relationship between the dust reduction efficiency of the target fully mechanized mining face and the spray pressure, and determines the control mathematical model of the adaptive hydraulic support dust control system in combination with the dust concentration management limit.

7. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: For a non-contact automatic spray-wetting coal dust suppression system, the target parameters regulated by the dust suppression efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel's location information. The control parameters are the key process parameters of the non-contact automatic spray-wetting coal dust suppression system, including the number of sprays activated simultaneously, the spray spacing, the spray flow rate, and the spray status. The dust suppression efficiency control module studies the influence of the number of sprays, the spray spacing, the spray flow rate, and the spray status on the dust suppression efficiency of dust with different particle sizes, guides the design of the non-contact automatic spray-wetting coal dust suppression system, and determines the control mathematical model of the non-contact automatic spray-wetting coal dust suppression system in conjunction with the dust concentration management limit.

8. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: For the full-section water film net dust collection and purification system in roadways, the target parameters regulated by the dust reduction efficiency control module are the respirable dust concentration at the breathing zone height of the personnel working area and the personnel's location information. The control parameters are the key process parameters of the full-section water film net dust collection and purification system in roadways, including the spray water volume, the size of the dust collection net covering section, the dust collection net aperture, and the airflow velocity. The dust reduction efficiency control module studies the influence of spray water volume, dust collection net covering section size, dust collection net aperture, and airflow velocity on the dust reduction efficiency of dust with different particle sizes, guides the design of the full-section water film net dust collection and purification system in roadways, and determines the control mathematical model of the full-section water film net dust collection and purification system in roadways by combining the dust concentration management limit.

9. The intelligent dust control platform and display system for fully mechanized mining faces according to claim 1, characterized in that: The intelligent dust prevention and control decision module specifically includes: Dust Concentration Exceedance Judgment Module: This module compares the real-time monitored dust concentration at the fully mechanized mining surface with the dust concentration management limit to determine whether the dust concentration exceeds the limit. Dust source tracing module: Based on the dust generation capacity and dust transport influence of the fully mechanized mining face, and combined with the operating parameters of the fully mechanized mining face, the source of dust exceeding the concentration standard is analyzed and the dust source is determined. Control strategy determination module: used to determine specific control strategies based on the mathematical model of the dust reduction effect of individual measures; Dust suppression system control module: Based on the determined specific control strategy, it sends instructions to the relevant dust suppression systems to achieve dust suppression nearby.

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