Low-oxygen processing method and device for fully mechanized coal mining face system and fully mechanized coal mining face system

Abstract

The application provides a low-oxygen processing method and device for a fully mechanized working face system and the fully mechanized working face system. The method comprises the following steps: obtaining a surface pressure difference value; determining whether to obtain a first oxygen concentration, a second oxygen concentration and a third oxygen concentration according to the absolute value of the surface pressure difference value; obtaining the first oxygen concentration, the second oxygen concentration and the third oxygen concentration in the case of determining to obtain the first oxygen concentration, the second oxygen concentration and the third oxygen concentration; starting a corresponding power-driven equalizing fan according to the first oxygen concentration, the second oxygen concentration and the third oxygen concentration; controlling a second adjusting air door to open at a corresponding opening degree; and closing a first adjusting air door, a first equalizing air door and a second equalizing air door of the fully mechanized working face system. Thus, the oxygen concentration of the fully mechanized working face and the air return roadway is improved, and the problem that the prior art cannot treat the low-oxygen phenomenon of the fully mechanized working face system with a long distance is solved.

Description

Technical Field

[0001] This application relates to the technical field of fully mechanized mining faces in coal mines, and more specifically, to a method, apparatus, computer-readable storage medium, and fully mechanized mining face system for treating low oxygen levels. Background Technology

[0002] In response to low oxygen levels at working faces, coal mines typically use methods such as windbreak curtains for ventilation and crack sealing to address the issue. When the low oxygen levels are mild and the working face layout is simple, these methods can be effective in preventing and controlling low oxygen levels to some extent. However, under conditions of high mining height, long working face distances, and coordinated mining of coal seams, these methods generally fail and are unlikely to achieve good results in controlling low oxygen levels at working faces.

[0003] like Figure 1 As shown, the fully mechanized mining face system includes two intake airways (the first intake airway 4 and the second intake airway 6), one return airway 7, one fully mechanized mining face 8, and one panel tail roadway 2. It is also equipped with corresponding ventilation facilities. Under normal ventilation conditions, the first regulating air door 11-1 is open, and both the first equalizing air door 1-1 and the second equalizing air door 1-2 are open. Airflow flows from the second intake airway 6 through the open regulating air door to the fully mechanized mining face 8, and after passing through the face, it flows out of the fully mechanized mining face system along the return airway 7 through the open second equalizing air door 1-2. Simultaneously, some airflow flows along the first intake airway 4 into the panel tail roadway 2, and then out of the fully mechanized mining face system.

[0004] When low oxygen occurs, the external pressure drops significantly, while the internal pressure of goaf 3 does not change much. This results in a significant pressure difference between goaf 3, the longwall face 8, and the roadway, which in turn causes low oxygen gas to flow out of the goaf, triggering a low oxygen accident at the working face. Summary of the Invention

[0005] The main objective of this application is to provide a method, apparatus, computer-readable storage medium, and fully mechanized mining face system for treating low oxygen levels, so as to at least solve the problem that the prior art cannot treat low oxygen levels in fully mechanized mining face systems with long distances.

[0006] To achieve the above objectives, according to one aspect of this application, a method for treating low oxygen levels in a fully mechanized mining face system is provided. This method is applied to a controller of the fully mechanized mining face system, which includes a second regulating damper and a pressure equalizing fan. The method involves excavation beneath a first intake roadway of the fully mechanized mining face system to form a pressure equalizing chamber. The second regulating damper and the pressure equalizing fan are installed within the pressure equalizing chamber. The controller communicates with both the second regulating damper and the pressure equalizing fan. The method includes: an acquisition step: acquiring a surface pressure difference value, where the surface pressure difference is the difference between the atmospheric pressure at the surface at a predetermined time and the atmospheric pressure at the surface at the current time, wherein the current time is later than the predetermined time; and a determination step: based on the absolute value of the surface pressure difference value, determining whether to acquire a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration, wherein the first oxygen concentration characterizes the oxygen concentration at the fully mechanized mining face system at the current time, and the second oxygen concentration characterizes the oxygen concentration at the fully mechanized mining face system. The oxygen concentration in the return airway of the fully mechanized mining face system at the current moment is described, and the third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current moment. The processing steps are as follows: Given the determination to obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration. Based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, use the corresponding power to drive the equalizing fan to start, and use the corresponding opening degree to control the opening of the second regulating damper, and close the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system. The first equalizing damper is located at the end of the second intake airway of the fully mechanized mining face system away from the fully mechanized mining face. The first regulating damper is located at the end of the return airway away from the fully mechanized mining face. The second equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake airway.

[0007] Optionally, determining whether to acquire the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration based on the absolute value of the surface pressure difference includes: acquiring the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration if the absolute value of the surface pressure difference is greater than or equal to a pressure threshold; and not acquiring the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration if the absolute value of the surface pressure difference is less than the pressure threshold.

[0008] Optionally, the equalizing fan is started using the corresponding power based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, including: comparing the first oxygen concentration with a first preset oxygen concentration, comparing the second oxygen concentration with a second preset oxygen concentration, and comparing the third oxygen concentration with a third preset oxygen concentration to obtain a comparison result; if the comparison result satisfies a first preset condition, the equalizing fan is started using a first preset power, wherein the first preset condition is one of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration; if the comparison result satisfies a second preset condition, the equalizing fan is started using a first preset power. Under preset conditions, the equalizing fan is started using a second preset power. The second preset conditions include any two of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The second preset power is greater than the first preset power. If the comparison result satisfies a third preset condition, the equalizing fan is started using a third preset power. The third preset condition includes: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The third preset power is greater than the second preset power.

[0009] Optionally, the second regulating damper is controlled to open according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, including: when the comparison result meets the first preset condition, the pressure equalizing fan is controlled to open with a first opening; when the comparison result meets the second preset condition, the pressure equalizing fan is controlled to open with a second opening, wherein the second opening is greater than the first opening; when the comparison result meets the third preset condition, the pressure equalizing fan is controlled to open with a third opening, wherein the third opening is greater than the second opening.

[0010] Optionally, after starting the pressure equalizing fan with corresponding power according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and controlling the opening of the second regulating damper with corresponding opening degree, and closing the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system, the method further includes: if the comparison result does not meet the fourth preset condition, repeatedly executing the acquisition step, the determination step, and the processing step a predetermined number of times until the comparison result meets the fourth preset condition, then closing the pressure equalizing fan and the second regulating damper, and opening the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper. The fourth preset condition includes: the first oxygen concentration is greater than or equal to the first preset oxygen concentration, the second oxygen concentration is greater than or equal to the second preset oxygen concentration, and the third oxygen concentration is greater than or equal to the third preset oxygen concentration.

[0011] Optionally, after shutting down the equalizing fan and the second regulating damper, and opening the first regulating damper, the first equalizing damper, and the second equalizing damper, the method further includes: determining that the oxygen concentration of the fully mechanized mining face is in a normal concentration state, and generating construction information, which is used to remind workers to carry out construction on the fully mechanized mining face.

[0012] Optionally, after starting the equalizing blower with the corresponding power according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and opening the second regulating damper, and closing the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system, the method further includes: generating low oxygen information, which is used to remind workers that the oxygen concentration of the fully mechanized mining face is in a low oxygen state at the current moment.

[0013] According to another aspect of this application, a low-oxygen treatment device for a fully mechanized mining face system is provided. The device includes an acquisition unit, a determination unit, and a first treatment unit. The acquisition unit is used to acquire a surface pressure difference value, wherein the surface pressure difference value is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, and the current time is later than the predetermined time. The determination unit is used to determine whether to acquire a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration based on the absolute value of the surface pressure difference value. The first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the current time, the second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the current time, and the third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway. The current oxygen concentration is described; the first processing unit is used for the following processing steps: when it is determined that the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration are obtained, the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration are obtained; according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, the pressure equalizing fan is started with the corresponding power, and the second regulating damper is opened with the corresponding opening degree, and the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system are closed. The first pressure equalizing damper is located at the end of the second intake roadway of the fully mechanized mining face system away from the fully mechanized mining face, the first regulating damper is located at the end of the return air roadway away from the fully mechanized mining face, and the second pressure equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway.

[0014] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform any of the aforementioned low-oxygen treatment methods for a fully mechanized mining face system.

[0015] According to another aspect of this application, a fully mechanized mining face system is provided, comprising a controller, a second regulating damper, and a pressure equalizing fan. A pressure equalizing chamber is formed by excavation beneath a first intake roadway of the fully mechanized mining face system. The second regulating damper and the pressure equalizing fan are installed within the pressure equalizing chamber. The controller communicates with both the second regulating damper and the pressure equalizing fan. The controller is used to execute any of the oxygen depletion treatment methods described for the fully mechanized mining face system.

[0016] By applying the technical solution of this application, the oxygen concentration at the current moment of the fully mechanized mining face, the oxygen concentration at the current moment of the return air roadway, and the oxygen concentration at the current moment of the intersection of the fully mechanized mining face and the return air roadway are taken into consideration. The pressure equalization fan is then started with the corresponding power, and the second regulating damper is opened with the corresponding opening degree. The first regulating damper, the first pressure equalization damper, and the second pressure equalization damper of the fully mechanized mining face system are closed. This increases the oxygen concentration in the fully mechanized mining face and the return air roadway, thereby solving the problem that existing technologies cannot address the low oxygen phenomenon in long-distance fully mechanized mining face systems. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A schematic diagram of a fully mechanized mining face system provided in an embodiment of this application is shown;

[0019] Figure 2 A schematic flowchart of a low-oxygen treatment method for a fully mechanized mining face system according to an embodiment of this application is shown.

[0020] Figure 3 A schematic flowchart of another method for treating low oxygen levels in a fully mechanized mining face system, according to an embodiment of this application, is shown.

[0021] Figure 4 A schematic diagram showing the positional relationship between the fully mechanized mining face and the hydraulic support is provided.

[0022] Figure 5 A structural block diagram of a low-oxygen treatment device for a fully mechanized mining face system provided according to an embodiment of this application is shown.

[0023] The above figures include the following reference numerals:

[0024] 1-1, First pressure equalizing air door; 1-2, Second pressure equalizing air door; 2, End roadway of the panel; 3, Goaf; 4, First intake airway; 5, Pressure equalizing fan; 6, Second intake airway; 7, Return airway; 8, Longwall mining face; 9, Pressure equalizing chamber; 10-1, First automatic air door; 10-2, Second automatic air door; 11-1, First regulating air door; 11-2, Second regulating air door. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] As described in the background section, in the prior art, when hypoxia occurs, the external pressure drops significantly while the internal pressure of the goaf remains relatively stable. This results in a significant pressure difference between the goaf, the longwall face, and the roadways, leading to the outflow of low-oxygen gas from the goaf and causing hypoxia accidents at the working face. To address the problem that the prior art cannot control hypoxia in longwall mining face systems with long distances, embodiments of this application provide a hypoxia treatment method, apparatus, computer-readable storage medium, and longwall mining face system for longwall mining face systems.

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] This application provides a method for treating low oxygen levels in a fully mechanized mining face system. This method is applied to the controller of the fully mechanized mining face system, such as... Figure 1 As shown, the fully mechanized mining face system includes a second regulating air door 11-2 and a pressure equalizing fan 5. Excavation is carried out below the first intake roadway 4 of the fully mechanized mining face system to form a pressure equalizing chamber 9. The second regulating air door 11-2 and the pressure equalizing fan 5 are installed in the pressure equalizing chamber 9. The controller communicates with both the second regulating air door and the pressure equalizing fan. The fully mechanized mining face system also includes a first automatic air door 10-1 and a second automatic air door 10-2. The positions of the first automatic air door 10-1 and the second automatic air door 10-2 are shown in the figure. Figure 1As shown, further details will not be repeated here. The states of the first automatic damper 10-1 and the second automatic damper 10-2 are consistent with the states of the first regulating damper, the first equalizing damper, and the second equalizing damper. That is, when the first regulating damper, the first equalizing damper, and the second equalizing damper are closed, the first automatic damper 10-1 and the second automatic damper 10-2 are also closed; when the first regulating damper, the first equalizing damper, and the second equalizing damper are open, the first automatic damper 10-1 and the second automatic damper 10-2 are also open. The location of the return air passage 7 is as follows: Figure 1 As shown, it will not be elaborated upon here. Figure 2 This is a schematic flowchart illustrating a low-oxygen treatment method for a fully mechanized mining face system according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0031] Step S201, Acquisition Step: Acquire the surface pressure difference value, wherein the surface pressure difference value is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, and the current time is later than the predetermined time.

[0032] Step S202, Determination Step: Based on the absolute value of the above-mentioned surface pressure difference, determine whether to obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration. The first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the above-mentioned current moment. The second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the above-mentioned current moment. The third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the above-mentioned current moment.

[0033] Specifically, when the pressure difference between the longwall mining face and the goaf is large, gases other than oxygen in the goaf will enter the longwall mining face, reducing the oxygen concentration in the longwall mining face and causing a low-oxygen condition.

[0034] In one embodiment of this application, determining whether to acquire a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration based on the absolute value of the surface pressure difference includes: if the absolute value of the surface pressure difference is greater than or equal to a pressure threshold, determining to acquire the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration; if the absolute value of the surface pressure difference is less than the pressure threshold, determining not to acquire the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration.

[0035] Specifically, the pressure threshold is 300 Pa. When the atmospheric pressure at the surface changes significantly, subsequent low-oxygen treatment will be carried out. Observing the changes in the surface atmosphere in advance can help to know the trend of oxygen concentration changes in the fully mechanized mining face.

[0036] Step S203, processing steps: Given the determination of the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration. Based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, use the corresponding power to drive the equalizing fan to start, and use the corresponding opening degree to control the opening of the second regulating damper. Close the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system. The first equalizing damper is located at the end of the second intake roadway of the fully mechanized mining face system away from the fully mechanized mining face. The first regulating damper is located at the end of the return air roadway away from the fully mechanized mining face. The second equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway.

[0037] Specifically, the oxygen concentration at the fully mechanized mining face at the current moment, the oxygen concentration in the return airway at the current moment, and the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current moment are taken into consideration. The corresponding power is used to drive the pressure equalizing fan to start, and the corresponding opening degree is used to control the opening of the second regulating air door. The first regulating air door, the first pressure equalizing air door, and the second pressure equalizing air door of the fully mechanized mining face system are closed. The closure of the first regulating air door, the first pressure equalizing air door, and the second pressure equalizing air door of the fully mechanized mining face system is to prevent the newly introduced oxygen from leaving the fully mechanized mining face and the return airway.

[0038] In one embodiment of this application, the equalizing fan is started using corresponding power based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, including: comparing the first oxygen concentration with a first preset oxygen concentration (the first preset oxygen concentration accounts for 18%), comparing the second oxygen concentration with a second preset oxygen concentration (the second preset oxygen concentration accounts for 18%), and comparing the third oxygen concentration with a third preset oxygen concentration (the third preset oxygen concentration accounts for 17%), to obtain a comparison result; if the comparison result satisfies a first preset condition, the equalizing fan is started using a first preset power, wherein the first preset condition is one of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, or the third oxygen concentration is less than the first preset oxygen concentration. The third oxygen concentration is less than the aforementioned third preset oxygen concentration; if the comparison result satisfies the second preset condition, the equalizing fan is started using the second preset power, the second preset condition including any two of the following: the first oxygen concentration is less than the aforementioned first preset oxygen concentration, the second oxygen concentration is less than the aforementioned second preset oxygen concentration, and the third oxygen concentration is less than the aforementioned third preset oxygen concentration, wherein the second preset power is greater than the aforementioned first preset power; if the comparison result satisfies the third preset condition, the equalizing fan is started using the third preset power, the third preset condition including: the first oxygen concentration is less than the aforementioned first preset oxygen concentration, the second oxygen concentration is less than the aforementioned second preset oxygen concentration, and the third oxygen concentration is less than the aforementioned third preset oxygen concentration, wherein the third preset power is greater than the aforementioned second preset power.

[0039] Specifically, when the first oxygen concentration is less than the first preset oxygen concentration, or the second oxygen concentration is less than the second preset oxygen concentration, or the third oxygen concentration is less than the third preset oxygen concentration, the equalizing fan is started using the first preset power.

[0040] When the first oxygen concentration is less than the first preset oxygen concentration and the second oxygen concentration is less than the second preset oxygen concentration; or when the first oxygen concentration is less than the first preset oxygen concentration and the third oxygen concentration is less than the third preset oxygen concentration; or when the second oxygen concentration is less than the second preset oxygen concentration and the third oxygen concentration is less than the third preset oxygen concentration, the equalizing fan is started using the second preset power.

[0041] When the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration, the equalizing fan is started by using the third preset power.

[0042] Different levels of low oxygen conditions were achieved, and wind speeds of varying intensities were used to replenish oxygen.

[0043] In one embodiment of this application, controlling the opening of the second regulating damper with a corresponding opening degree based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration includes: controlling the opening of the pressure equalizing fan with a first opening degree when the comparison result meets the first preset condition; controlling the opening of the pressure equalizing fan with a second opening degree when the comparison result meets the second preset condition, wherein the second opening degree is greater than the first opening degree; and controlling the opening of the pressure equalizing fan with a third opening degree when the comparison result meets the third preset condition, wherein the third opening degree is greater than the second opening degree.

[0044] Specifically, when the first oxygen concentration is less than the first preset oxygen concentration, or the second oxygen concentration is less than the second preset oxygen concentration, or the third oxygen concentration is less than the third preset oxygen concentration, the pressure equalizing fan is controlled to start with a first opening degree (30%).

[0045] When the first oxygen concentration is less than the first preset oxygen concentration and the second oxygen concentration is less than the second preset oxygen concentration; or when the first oxygen concentration is less than the first preset oxygen concentration and the third oxygen concentration is less than the third preset oxygen concentration; or when the second oxygen concentration is less than the second preset oxygen concentration and the third oxygen concentration is less than the third preset oxygen concentration, the pressure equalizing fan is controlled to start with a second opening degree (60%).

[0046] When the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration, the pressure equalizing fan is controlled to start at the third opening degree (100%).

[0047] In one embodiment of this application, after starting the equalizing fan with corresponding power according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and controlling the opening of the second regulating damper with corresponding opening degree, and closing the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system, the method further includes: if the comparison result does not meet the fourth preset condition, repeatedly executing the acquisition step, the determination step, and the processing step a predetermined number of times until the comparison result meets the fourth preset condition, then closing the equalizing fan and the second regulating damper, and opening the first regulating damper, the first equalizing damper, and the second equalizing damper. The fourth preset condition includes: the first oxygen concentration is greater than or equal to the first preset oxygen concentration, the second oxygen concentration is greater than or equal to the second preset oxygen concentration, and the third oxygen concentration is greater than or equal to the third preset oxygen concentration.

[0048] Specifically, when the first oxygen concentration is greater than or equal to the first preset oxygen concentration, the second oxygen concentration is greater than or equal to the second preset oxygen concentration, and the third oxygen concentration is greater than or equal to the third preset oxygen concentration, the pressure equalizing fan and the second regulating damper are shut down, and the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper are opened. This indicates that normal construction is possible at this time, and the oxygen concentration at the longwall mining face is not in a low-oxygen state.

[0049] In one embodiment of this application, after shutting down the pressure equalizing fan and the second regulating damper, and opening the first regulating damper, the first pressure equalizing damper and the second pressure equalizing damper, the method further includes: determining that the oxygen concentration of the fully mechanized mining face is in a normal concentration state, and generating construction information, which is used to remind workers to carry out construction on the fully mechanized mining face.

[0050] Specifically, when the fully mechanized mining face is able to operate normally, construction information is generated to inform the staff to carry out construction on the aforementioned fully mechanized mining face.

[0051] In one embodiment of this application, after starting the equalizing fan with the corresponding power according to the first oxygen concentration, the second oxygen concentration and the third oxygen concentration, opening the second regulating damper, and closing the first regulating damper, the first equalizing damper and the second equalizing damper of the fully mechanized mining face system, the method further includes: generating low oxygen information, which is used to remind the workers that the oxygen concentration of the fully mechanized mining face is in a low oxygen state at the current time.

[0052] Specifically, construction cannot be carried out when the oxygen concentration at the fully mechanized mining face is low. Therefore, a low oxygen information is generated to inform the workers that the oxygen concentration at the fully mechanized mining face is low at the current time.

[0053] By taking into account the oxygen concentration at the current moment in the fully mechanized mining face, the oxygen concentration at the current moment in the return air roadway, and the oxygen concentration at the intersection of the fully mechanized mining face and the return air roadway, the corresponding power is used to drive the pressure equalizing fan to start, and the corresponding opening degree is used to control the opening of the second regulating air door, while closing the first regulating air door, the first pressure equalizing air door, and the second pressure equalizing air door of the fully mechanized mining face system. This increases the oxygen concentration in the fully mechanized mining face and the return air roadway, thereby solving the problem that the existing technology cannot treat the low oxygen phenomenon in a long-distance fully mechanized mining face system.

[0054] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the low-oxygen treatment method of the fully mechanized mining face system of this application will be described in detail below with reference to specific embodiments.

[0055] This embodiment relates to a specific method for treating low oxygen levels in a fully mechanized mining face system. This method is applied to the controller of the fully mechanized mining face system, such as... Figure 1 As shown, the aforementioned fully mechanized mining face system includes a second regulating damper 11-2 and a pressure equalizing fan 5. Excavation is carried out below the first intake roadway 4 of the fully mechanized mining face system to form a pressure equalizing chamber 9. The second regulating damper 11-2 and the pressure equalizing fan 5 are installed within the pressure equalizing chamber 9. The controller communicates with both the second regulating damper and the pressure equalizing fan. Figure 3 As shown, it includes the following steps:

[0056] Step S1: Obtain the surface pressure difference value, which is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, where the current time is later than the predetermined time; if the absolute value of the surface pressure difference value is greater than or equal to a pressure threshold, determine to obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and then proceed to step S2; if the absolute value of the surface pressure difference value is less than the pressure threshold, determine not to obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and then execute step S1 again, where the first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the current time, the second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the current time, and the third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current time;

[0057] Step S2: When the first oxygen concentration is less than the first preset oxygen concentration, or the second oxygen concentration is less than the second preset oxygen concentration, or the third oxygen concentration is less than the third preset oxygen concentration, the pressure equalizing fan is started by driving it with the first preset power, the pressure equalizing fan is opened by controlling it with a 30% opening, and the first regulating damper, the first pressure equalizing damper and the second pressure equalizing damper of the fully mechanized mining face system are closed.

[0058] The first regulating air door and the first equalizing air door are located at the end of the return air roadway away from the fully mechanized mining face, and the second equalizing air door is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake air roadway.

[0059] Step S3: When the first oxygen concentration is less than the first preset oxygen concentration and the second oxygen concentration is less than the second preset oxygen concentration; or when the first oxygen concentration is less than the first preset oxygen concentration and the third oxygen concentration is less than the third preset oxygen concentration; or when the second oxygen concentration is less than the second preset oxygen concentration and the third oxygen concentration is less than the third preset oxygen concentration, the pressure equalizing fan is started using the second preset power, the pressure equalizing fan is opened using a 60% opening degree, and the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system are closed.

[0060] Step S4: When the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration, the pressure equalizing fan is started by driving it with the third preset power, the pressure equalizing fan is opened by controlling it with 100% opening, and the first regulating damper, the first pressure equalizing damper and the second pressure equalizing damper of the fully mechanized mining face system are closed.

[0061] Step S5: When the first oxygen concentration is greater than or equal to the first preset oxygen concentration, the second oxygen concentration is greater than or equal to the second preset oxygen concentration, and the third oxygen concentration is greater than or equal to the third preset oxygen concentration, shut down the equalizing blower and the second regulating damper, and open the first regulating damper, the first equalizing damper, and the second equalizing damper. Determine that the oxygen concentration of the fully mechanized mining face is in a normal state, and generate construction information. The construction information is used to remind workers to carry out construction on the fully mechanized mining face.

[0062] like Figure 1 As shown, when hypoxia occurs, the external pressure drops significantly, while the internal pressure of goaf 3 remains relatively stable. This results in a significant pressure difference between goaf 3 and the longwall face 8 and roadways, leading to the outflow of low-oxygen gas from the goaf and triggering a hypoxia accident at the working face. This application utilizes the pressure equalizing fan 5 to increase the pressure between the longwall face 8, the second intake roadway 6, and the return air roadway, thereby reducing the pressure difference between the longwall face 8 and goaf 3. This suppresses the outflow of low-oxygen gas from goaf 3 and mitigates the impact of hypoxia accidents.

[0063] At this time, all the airflow flowing towards the working face passes through the equalizing chamber 9 and is pressurized by the equalizing fan 5, thereby reducing the pressure difference between the internal gases of the fully mechanized working face 8 and the goaf 3.

[0064] When the external atmospheric pressure gradually stabilizes, and the oxygen concentration detector between the supports of the fully mechanized mining face 8 detects an oxygen value >19.5% and shows an upward trend, it is determined that the pressure equalization has achieved a good effect in controlling low oxygen levels. Then, the pressure equalization fan 5 can be shut down, and all ventilation measures of the fully mechanized mining face can be restored to normal ventilation status (i.e., restored to the initial state).

[0065] like Figure 4 As shown, Figure 4 The diagram illustrates the positional relationship between the fully mechanized mining face and the hydraulic supports. The term "between supports" refers to the positions of the hydraulic supports within the fully mechanized mining face. These hydraulic supports are devices that support the roof at the fully mechanized mining face. They are placed side by side at the working face to support the roof and provide working space for coal mining operations.

[0066] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0067] This application also provides a low-oxygen treatment device for a fully mechanized mining face system. It should be noted that the low-oxygen treatment device for the fully mechanized mining face system in this application embodiment can be used to execute the low-oxygen treatment method for a fully mechanized mining face system provided in this application embodiment. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0068] The following describes the low-oxygen treatment device for the fully mechanized mining face system provided in the embodiments of this application.

[0069] Figure 5 This is a structural block diagram of a low-oxygen treatment device for a fully mechanized mining face system, provided according to an embodiment of this application. Figure 5As shown, the device includes an acquisition unit 51, a determination unit 52, and a first processing unit 53. The acquisition unit 51 is used for the acquisition step of: acquiring a surface pressure difference value, wherein the surface pressure difference value is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, wherein the current time is later than the predetermined time. The determination unit 52 is used for the determination step of: determining whether to acquire a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration based on the absolute value of the surface pressure difference value, wherein the first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the current time, the second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the current time, and the third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current time. The first processing unit 53 is used for the following processing steps: Upon determining that the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration are obtained, the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration are obtained; based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, the corresponding power is used to drive the equalizing fan to start, and the corresponding opening degree is used to control the opening of the second regulating damper, and the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system are closed. The first equalizing damper is located at the end of the second intake roadway of the fully mechanized mining face system away from the fully mechanized mining face; the first regulating damper is located at the end of the return air roadway away from the fully mechanized mining face; and the second equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway.

[0070] In the aforementioned device, the oxygen concentration at the current moment in the fully mechanized mining face, the oxygen concentration at the current moment in the return airway, and the oxygen concentration at the intersection of the fully mechanized mining face and the return airway are taken into consideration. The device then uses corresponding power to drive the pressure equalizing fan to start, and uses corresponding opening degree to control the opening of the second regulating damper, while closing the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system. This increases the oxygen concentration in the fully mechanized mining face and the return airway, thereby solving the problem that existing technologies cannot address the low oxygen phenomenon in long-distance fully mechanized mining face systems.

[0071] In one embodiment of this application, the determining unit includes a first determining module and a second determining module. The first determining module is used to determine to acquire the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration when the absolute value of the surface pressure difference is greater than or equal to a pressure threshold. The second determining module is used to determine not to acquire the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration when the absolute value of the surface pressure difference is less than the pressure threshold.

[0072] In one embodiment of this application, the first processing unit includes a first processing module, a second processing module, a third processing module, and a fourth processing module: the first processing module is used to compare the first oxygen concentration with a first preset oxygen concentration, compare the second oxygen concentration with a second preset oxygen concentration, and compare the third oxygen concentration with a third preset oxygen concentration to obtain a comparison result; the second processing module is used to drive the equalizing fan to start with a first preset power when the comparison result meets a first preset condition, wherein the first preset condition is one of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration; the third processing module is used to... If the second preset condition is met, the equalizing fan is started using the second preset power. The second preset condition includes any two of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The second preset power is greater than the first preset power. The fourth processing module is used to start the equalizing fan using the third preset power if the comparison result meets the third preset condition. The third preset condition includes: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The third preset power is greater than the second preset power.

[0073] In one embodiment of this application, the first processing unit includes a fifth processing module, a sixth processing module, and a seventh processing module. The fifth processing module is used to control the equalizing fan to start with a first opening degree when the comparison result meets the first preset condition. The sixth processing module is used to control the equalizing fan to start with a second opening degree when the comparison result meets the second preset condition, wherein the second opening degree is greater than the first opening degree. The seventh processing module is used to control the equalizing fan to start with a third opening degree when the comparison result meets the third preset condition, wherein the third opening degree is greater than the second opening degree.

[0074] In one embodiment of this application, the device further includes a second processing unit. After starting the pressure equalizing fan with corresponding power according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and controlling the opening of the second regulating damper with corresponding opening degree, and closing the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system, the second processing unit is used to repeatedly execute the acquisition step, the determination step, and the processing step a predetermined number of times if the comparison result does not meet the fourth preset condition, until the comparison result meets the fourth preset condition, at which point the pressure equalizing fan and the second regulating damper are closed, and the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper are opened. The fourth preset condition includes: the first oxygen concentration is greater than or equal to the first preset oxygen concentration, the second oxygen concentration is greater than or equal to the second preset oxygen concentration, and the third oxygen concentration is greater than or equal to the third preset oxygen concentration.

[0075] In one embodiment of this application, the device further includes a third processing unit. After shutting down the pressure equalizing fan and the second regulating damper, and opening the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper, the third processing unit is used to determine that the oxygen concentration of the fully mechanized mining face is in a normal concentration state, and generates construction information. The construction information is used to remind workers to carry out construction on the fully mechanized mining face.

[0076] In one embodiment of this application, the device further includes a fourth processing unit. After starting the pressure equalizing fan and opening the second regulating damper according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and closing the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system, the fourth processing unit generates low oxygen information. The low oxygen information is used to remind workers that the oxygen concentration of the fully mechanized mining face is in a low oxygen state at the current moment.

[0077] The low-oxygen treatment device of the aforementioned fully mechanized mining face system includes a processor and a memory. The acquisition unit, determination unit, and first processing unit are all stored as program units in the memory, and the processor executes the program units stored in the memory to achieve the corresponding functions. All of the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0078] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem of low oxygen levels in long-distance fully mechanized mining faces, a problem that current technologies cannot solve.

[0079] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0080] This invention provides a computer-readable storage medium that includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the low-oxygen treatment method of the fully mechanized mining face system.

[0081] This invention provides a processor for running a program, wherein the program executes the low-oxygen treatment method of the fully mechanized mining face system.

[0082] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps: An acquisition step: acquiring a surface pressure difference value, wherein the surface pressure difference is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, wherein the current time is later than the predetermined time; A determination step: based on the absolute value of the surface pressure difference, determining whether to acquire a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration, wherein the first oxygen concentration characterizes the oxygen concentration at the fully mechanized mining face system at the current time, the second oxygen concentration characterizes the oxygen concentration in the return airway of the fully mechanized mining face system at the current time, and the third oxygen concentration characterizes the oxygen concentration at the intersection of the fully mechanized mining face and the return airway. The oxygen concentration at the current moment is as follows: Processing steps: Given the first, second, and third oxygen concentrations, obtain these concentrations. Based on these concentrations, start the equalizing fan using the corresponding power, and control the opening of the second regulating damper using the corresponding opening degree. Close the first regulating damper, first equalizing damper, and second equalizing damper of the fully mechanized mining face system. The first equalizing damper is located at the end of the second intake roadway of the fully mechanized mining face system away from the face. The first regulating damper is located at the end of the return air roadway away from the face. The second equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway. The devices mentioned in this document can be servers, PCs, tablets, mobile phones, etc.

[0083] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps: An acquisition step: acquiring a surface pressure difference value, wherein the surface pressure difference is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, wherein the current time is later than the predetermined time; A determination step: determining, based on the absolute value of the surface pressure difference, whether to acquire a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration, wherein the first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the current time, the second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the current time, and the third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current time. Oxygen concentration; Processing steps: After determining the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration. Based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, use the corresponding power to drive the equalizing fan to start, and use the corresponding opening degree to control the opening of the second regulating air door, and close the first regulating air door, the first equalizing air door, and the second equalizing air door of the fully mechanized mining face system. The first equalizing air door is located at the end of the second intake roadway of the fully mechanized mining face system away from the fully mechanized mining face. The first regulating air door is located at the end of the return air roadway away from the fully mechanized mining face. The second equalizing air door is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway.

[0084] This application also provides a fully mechanized mining face system, which includes a controller, a second regulating damper, and a pressure equalizing fan. A pressure equalizing chamber is formed by excavation beneath the first intake roadway of the fully mechanized mining face system. The second regulating damper and the pressure equalizing fan are installed within the pressure equalizing chamber. The controller communicates with both the second regulating damper and the pressure equalizing fan. The controller is used to execute any of the aforementioned low-oxygen treatment methods for the fully mechanized mining face system. Taking into account the oxygen concentration at the current moment in the fully mechanized mining face, the oxygen concentration at the current moment in the return airway, and the oxygen concentration at the intersection of the fully mechanized mining face and the return airway, the corresponding power is used to drive the pressure equalizing fan to start, and the corresponding opening degree is used to control the opening of the second regulating air door, while closing the first regulating air door, the first pressure equalizing air door, and the second pressure equalizing air door of the fully mechanized mining face system. This increases the oxygen concentration in the fully mechanized mining face and the return airway, thereby solving the problem that existing technologies cannot address the low oxygen phenomenon in long-distance fully mechanized mining face systems.

[0085] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0086] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0088] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0089] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0090] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0091] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0092] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0093] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0094] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0095] 1) The low-oxygen treatment method for the fully mechanized mining face system of this application takes into account the oxygen concentration of the fully mechanized mining face at the current time, the oxygen concentration of the return air roadway at the current time, and the oxygen concentration at the intersection of the fully mechanized mining face and the return air roadway at the current time. Then, the corresponding power is used to drive the pressure equalization fan to start, and the corresponding opening degree is used to control the opening of the second regulating air door, and the first regulating air door, the first pressure equalization air door and the second pressure equalization air door of the fully mechanized mining face system are closed. This increases the oxygen concentration of the fully mechanized mining face and the return air roadway, thereby solving the problem that the prior art cannot treat the low-oxygen phenomenon of a long-distance fully mechanized mining face system.

[0096] 2) The low-oxygen treatment device for the fully mechanized mining face system of this application takes into account the oxygen concentration of the fully mechanized mining face at the current time, the oxygen concentration of the return air roadway at the current time, and the oxygen concentration at the intersection of the fully mechanized mining face and the return air roadway at the current time. It then uses the corresponding power to drive the pressure equalizing fan to start and uses the corresponding opening degree to control the opening of the second regulating air door and close the first regulating air door, the first pressure equalizing air door and the second pressure equalizing air door of the fully mechanized mining face system. This increases the oxygen concentration of the fully mechanized mining face and the return air roadway, thereby solving the problem that the prior art cannot treat the low-oxygen phenomenon of a long-distance fully mechanized mining face system.

[0097] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for treating low oxygen levels in a fully mechanized mining face system, applied to the controller of the fully mechanized mining face system, wherein the fully mechanized mining face system includes a second regulating damper and a pressure equalizing fan, wherein, Excavation is carried out below the first intake roadway of the fully mechanized mining face system to form a pressure equalization chamber. A second regulating damper and a pressure equalization fan are installed in the pressure equalization chamber. The controller communicates with both the second regulating damper and the pressure equalization fan. The system is characterized by comprising: Acquisition Steps: Acquire the surface pressure difference value, which is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, wherein the current time is later than the predetermined time; Determination steps: Based on the absolute value of the surface pressure difference, determine whether to obtain the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration. The first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the current time. The second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the current time. The third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current time. Processing steps: Given the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, obtain these concentrations. Based on these concentrations, drive the equalizing fan with the corresponding power, start the second regulating damper, and control its opening with the corresponding degree. Close the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system. The first equalizing damper is located at the end of the second intake roadway of the fully mechanized mining face system away from the face. The first regulating damper is located at the end of the return air roadway away from the face. The second equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway. Based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, the pressure equalizing fan is started using the corresponding power, including: The first oxygen concentration is compared with the first preset oxygen concentration, the second oxygen concentration is compared with the second preset oxygen concentration, and the third oxygen concentration is compared with the third preset oxygen concentration to obtain a comparison result. If the comparison result meets the first preset condition, the equalizing fan is started by driving it with the first preset power. The first preset condition is one of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. If the comparison result meets the second preset condition, the pressure equalizing fan is started by driving it with the second preset power. The second preset condition includes any two of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The second preset power is greater than the first preset power. If the comparison result meets the third preset condition, the pressure equalizing fan is started using the third preset power. The third preset condition includes: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration, and the third preset power is greater than the second preset power.

2. The method according to claim 1, characterized in that, Determining whether to acquire the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration based on the absolute value of the surface pressure difference includes: If the absolute value of the surface pressure difference is greater than or equal to the pressure threshold, the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration are determined and obtained. If the absolute value of the surface pressure difference is less than the pressure threshold, it is determined that the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration will not be acquired.

3. The method according to claim 1, characterized in that, Based on the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, the second regulating damper is opened with a corresponding opening degree, including: If the comparison result meets the first preset condition, the pressure equalizing fan is turned on by controlling the first opening degree; If the comparison result meets the second preset condition, the pressure equalizing fan is turned on by controlling the second opening degree, wherein the second opening degree is greater than the first opening degree; If the comparison result meets the third preset condition, the pressure equalizing fan is turned on by controlling the third opening degree, which is greater than the second opening degree.

4. The method according to claim 1, characterized in that, After starting the pressure equalizing fan with corresponding power according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration, and controlling the opening of the second regulating damper with corresponding opening degree, and closing the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system, the method further includes: If the comparison result does not meet the fourth preset condition, the acquisition step, the determination step, and the processing step are executed repeatedly for a predetermined number of times until the comparison result meets the fourth preset condition. Then, the pressure equalizing fan and the second regulating damper are turned off, and the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper are turned on. The fourth preset condition includes: the first oxygen concentration is greater than or equal to the first preset oxygen concentration, the second oxygen concentration is greater than or equal to the second preset oxygen concentration, and the third oxygen concentration is greater than or equal to the third preset oxygen concentration.

5. The method according to claim 4, characterized in that, After shutting down the equalizing fan and the second regulating damper, and opening the first regulating damper, the first equalizing damper, and the second equalizing damper, the method further includes: The oxygen concentration at the fully mechanized mining face is determined to be at a normal level, and construction information is generated to remind workers to carry out construction at the fully mechanized mining face.

6. The method according to any one of claims 1 to 5, characterized in that, After starting the pressure equalizing fan according to the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration using the corresponding power, opening the second regulating damper, and closing the first regulating damper, the first pressure equalizing damper, and the second pressure equalizing damper of the fully mechanized mining face system, the method further includes: A low-oxygen information is generated, which is used to remind the staff that the oxygen concentration at the fully mechanized mining face is in a low-oxygen state at the current time.

7. A low-oxygen treatment device for a fully mechanized mining face system, characterized in that, include: The acquisition unit is used to acquire the following steps: acquiring the surface pressure difference value, wherein the surface pressure difference value is the difference between the atmospheric pressure value of the surface at a predetermined time and the atmospheric pressure value of the surface at the current time, and the current time is later than the predetermined time; A determining unit is used to determine the following steps: based on the absolute value of the surface pressure difference, whether to obtain a first oxygen concentration, a second oxygen concentration, and a third oxygen concentration, wherein the first oxygen concentration is used to characterize the oxygen concentration of the fully mechanized mining face system at the current time, the second oxygen concentration is used to characterize the oxygen concentration of the return airway of the fully mechanized mining face system at the current time, and the third oxygen concentration is used to characterize the oxygen concentration at the intersection of the fully mechanized mining face and the return airway at the current time; The first processing unit is configured to process the following steps: Given that the first oxygen concentration, the second oxygen concentration, and the third oxygen concentration are determined, the unit acquires these concentrations; based on these concentrations, it starts the equalizing fan using the corresponding power output and controls the second regulating damper to open using the corresponding opening degree; and closes the first regulating damper, the first equalizing damper, and the second equalizing damper of the fully mechanized mining face system. The first equalizing damper is located at the end of the second intake roadway of the fully mechanized mining face system away from the face; the first regulating damper is located at the end of the return air roadway away from the face; and the second equalizing damper is located at the end of the panel tail roadway of the fully mechanized mining face system away from the first intake roadway. The first processing unit includes a first processing module, a second processing module, a third processing module, and a fourth processing module. The first processing module is used to compare the first oxygen concentration with a first preset oxygen concentration, compare the second oxygen concentration with a second preset oxygen concentration, and compare the third oxygen concentration with a third preset oxygen concentration to obtain a comparison result; The second processing module is used to drive the equalizing fan to start with a first preset power when the comparison result meets the first preset condition. The first preset condition is one of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The third processing module is used to drive the equalizing fan to start with a second preset power when the comparison result meets the second preset condition. The second preset condition includes any two of the following: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration. The second preset power is greater than the first preset power. The fourth processing module is used to drive the equalizing fan to start with a third preset power when the comparison result meets the third preset condition. The third preset condition includes: the first oxygen concentration is less than the first preset oxygen concentration, the second oxygen concentration is less than the second preset oxygen concentration, and the third oxygen concentration is less than the third preset oxygen concentration, and the third preset power is greater than the second preset power.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the low-oxygen treatment method for the fully mechanized mining face system according to any one of claims 1 to 6.

9. A fully mechanized mining face system, characterized in that, include: The system comprises a controller, a second regulating damper, and a pressure equalizing fan, wherein excavation is carried out below the first intake roadway of the fully mechanized mining face system to form a pressure equalizing chamber, the second regulating damper and the pressure equalizing fan are installed in the pressure equalizing chamber, the controller communicates with the second regulating damper and the pressure equalizing fan respectively, and the controller is used to execute the low-oxygen treatment method of the fully mechanized mining face system according to any one of claims 1 to 6.

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