Method, device and storage medium for determining carbon monoxide concentration in fully mechanized mining working face

Abstract

The present disclosure relates to a method, device and storage medium for determining the carbon monoxide concentration in a fully mechanized mining face, and belongs to the field of coal mining. The method includes: determining the amount of carbon monoxide generated by the coal left in the goaf; determining the amount of carbon monoxide generated by the coal body after the frame is broken; and determining the carbon monoxide concentration corresponding to the target area according to the amount of carbon monoxide generated by the coal left in the goaf, the amount of carbon monoxide generated by the coal body after the frame is broken, and the over-air volume in the target area. By determining the carbon monoxide concentration by the amount of carbon monoxide generated by the coal left in the goaf, the amount of carbon monoxide generated by the coal body after the frame is broken, and the over-air volume in the target area, the carbon monoxide concentration in the target area can be more accurately determined, thereby avoiding the danger caused by inaccurate false reports of carbon monoxide concentration.

Description

Technical Field

[0001] The present disclosure relates to the field of coal mining, and in particular, to a method, device and storage medium for determining the carbon monoxide concentration in a fully mechanized mining face. Background Art

[0002] In the relevant technology, during the mining of the working face using the fully mechanized top coal caving mining technology, the carbon monoxide concentration in the goaf, return air corner and return air chute is high without spontaneous combustion. During the period of slow advancement of the working face, the production and distribution of carbon monoxide are unclear, which seriously interferes with the prediction of coal spontaneous combustion, resulting in false alarms and possible dangers in the coal mining process. Summary of the invention

[0003] In order to solve the problems existing in the related art, the present disclosure provides a method, device and storage medium for determining the carbon monoxide concentration in a comprehensive mining working face.

[0004] In order to achieve the above-mentioned object, the first aspect of the present disclosure provides a method for determining the carbon monoxide concentration in a fully mechanized mining face, the method comprising:

[0005] Determine the amount of carbon monoxide produced by coal residue in goaf areas;

[0006] Determine the amount of carbon monoxide produced by the crushed coal after the rack;

[0007] The carbon monoxide concentration corresponding to the target area is determined according to the carbon monoxide generation of the residual coal in the goaf, the carbon monoxide generation of the crushed coal body after the rack, and the excess air volume in the target area.

[0008] Optionally, determining the amount of carbon monoxide produced by coal residue in the goaf includes:

[0009] According to the amount of coal left in the heat dissipation zone of the goaf, the carbon monoxide generation parameters and the oxidation correction coefficient of the coal left in the heat dissipation zone of the goaf, the amount of carbon monoxide generated by the coal left in the heat dissipation zone of the goaf is determined;

[0010] Determine the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf;

[0011] The amount of carbon monoxide generated by the residual coal in the goaf is determined based on the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf and the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf.

[0012] Optionally, determining the amount of carbon monoxide produced by the coal body after crushing includes:

[0013] The amount of carbon monoxide produced by the crushed coal body after the rack is determined according to the amount of the crushed coal body after the rack and the carbon monoxide production parameters.

[0014] Optionally, determining the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf according to the amount of residual coal in the heat dissipation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf includes:

[0015] The amount of coal left in the heat dissipation zone of the goaf is determined based on the length of the working face, the length of the working face air intake lane, the length of the working face return air lane, the working face recovery rate, the coal seam expansion coefficient, the width of the working face heat dissipation zone and the thickness of the working face coal caving.

[0016] Optionally, the determining the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf comprises:

[0017] The amount of coal left in the oxidation zone of the goaf is determined based on the length of the working face, the length of the working face air intake tunnel, the length of the working face return air tunnel, the working face recovery rate, the coal seam expansion coefficient, the width of the working face oxidation zone and the thickness of the working face coal caving.

[0018] Optionally, determining the amount of carbon monoxide generated by the coal body after the rack crushing according to the amount of coal body after the rack crushing and the carbon monoxide generation parameter includes:

[0019] The amount of coal body crushed after the working face frame is determined according to the length of the working face, the width of the coal body crushed after the working face frame, and the height of the coal body crushed after the working face frame.

[0020] Optionally, determining the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf according to the amount of residual coal in the heat dissipation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf includes:

[0021] According to the formula Q 散 =K·H·Z 散 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )], determine the amount of coal left in the heat dissipation zone of the goaf;

[0022] According to the formula V 散 =α·Q 散 ·δ CO (T), determining the amount of carbon monoxide produced by the coal in the heat dissipation zone of the goaf;

[0023] Among them, Q 散 Indicates the amount of coal left in the heat dissipation zone of the goaf, V 散 represents the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf, K represents the coal seam expansion coefficient, H represents the coal thickness of the working face, and Z 散 represents the width of the heat dissipation zone of the working surface, L represents the length of the working surface, and L进 Indicates the length of the air inlet lane of the working face, L 回 represents the length of the return air lane of the working face, φ represents the recovery rate of the working face, α represents the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf, δ CO (T) represents the carbon monoxide generation parameter.

[0024] A second aspect of the present disclosure provides a device for determining carbon monoxide concentration in a fully mechanized mining working face, the device comprising:

[0025] The first determination module is used to determine the amount of carbon monoxide produced by the coal residue in the goaf;

[0026] The second determination module is used to determine the amount of carbon monoxide produced by the crushed coal body after the rack;

[0027] The third determination module is used to determine the carbon monoxide concentration corresponding to the target area according to the carbon monoxide generation of the residual coal in the goaf, the carbon monoxide generation of the broken coal body after the rack, and the excess air volume in the target area.

[0028] A third aspect of the present disclosure provides a non-temporary computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect of the present disclosure.

[0029] A fourth aspect of the present disclosure provides an electronic device, including:

[0030] a memory having a computer program stored thereon;

[0031] A processor is used to execute the computer program in the memory to implement the steps of any one of the methods described in the first aspect of the present disclosure.

[0032] Through the above technical scheme, by determining the amount of carbon monoxide generated by the remaining coal in the goaf and the amount of carbon monoxide generated by the broken coal body after the rack, and determining the carbon monoxide concentration by the amount of carbon monoxide generated by the remaining coal in the goaf and the amount of carbon monoxide generated by the broken coal body after the rack and the air volume in the target area, the carbon monoxide concentration in the target area can be more accurately determined, avoiding the danger caused by inaccurate false alarm of carbon monoxide concentration.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0035] Figure 1It is a flow chart of a method for determining the carbon monoxide concentration in a fully mechanized mining face according to an exemplary embodiment.

[0036] Figure 2 It is another flow chart of a method for determining the carbon monoxide concentration in a fully mechanized mining face according to an exemplary embodiment.

[0037] Figure 3 A block diagram of a device for determining carbon monoxide concentration in a fully mechanized mining face is shown according to an exemplary embodiment.

[0038] Figure 4 It is a block diagram of an electronic device according to an exemplary embodiment.

[0039] Figure 5 is a block diagram of another electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0040] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0041] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0042] Coal is the main energy source in my country, accounting for about 60% of the primary energy production and consumption structure. However, in the process of coal mining, coal fire disasters occur frequently and seriously. Coal mine fire accidents not only produce a large amount of toxic and harmful gases, seriously threatening the lives and safety of underground workers, but also the secondary disasters such as coal dust and gas explosions caused by the fire are more serious.

[0043] Relevant regulations require that when mining coal seams that are prone to spontaneous combustion and self-ignition, it is necessary to carry out natural fire monitoring, establish a natural fire monitoring system, determine the natural fire marker gases and critical values ​​of the coal seams, and improve the natural fire prediction and management system.

[0044] In the relevant technology, the low-grade and self-igniting coal seams are mined by fully mechanized top coal caving. During the mining of the working face, under the condition that there is no spontaneous combustion, the carbon monoxide concentration is high in the goaf, return air corners and return air chute. During the period of slow advancement of the working face, the production and distribution of carbon monoxide are unclear, which seriously interferes with the prediction of coal spontaneous combustion, resulting in false alarms and possible dangers in the coal mining process.

[0045] In order to solve the problems existing in the related art, the present disclosure provides a method, device and storage medium for determining the carbon monoxide concentration in a comprehensive mining face, and an electronic device.

[0046] Figure 1 The present invention is a flowchart of a method for determining carbon monoxide concentration in a fully mechanized mining face according to an exemplary embodiment. The method can be applied to any electronic device with information processing capabilities, such as a computer terminal, a mobile phone, a server, a message receiving and sending device, a tablet device, etc., and the present disclosure does not specifically limit this. Figure 1 As shown, the method includes:

[0047] S101. Determine the amount of carbon monoxide produced by the coal residue in the goaf.

[0048] The amount of carbon monoxide produced by the coal left in the goaf can be determined based on the volume of the coal left in the goaf and the carbon monoxide production rate determined according to natural coal experiments.

[0049] S102, determine the amount of carbon monoxide produced by the crushed coal body after the rack.

[0050] The amount of carbon monoxide produced by the post-rack crushing media can be determined based on the volume of the post-rack crushed coal body and the carbon monoxide production rate determined from a natural coal experiment.

[0051] S103, determining the carbon monoxide concentration corresponding to the target area according to the carbon monoxide generation of the coal residue in the goaf, the carbon monoxide generation of the crushed coal body after the rack, and the air volume in the target area.

[0052] The target area may include one or more of the return air corner, the goaf heat dissipation zone, and the goaf oxidation zone. The target area over-air volume may be determined by data collected by sensors arranged at the return air corner, the goaf heat dissipation zone, or the goaf oxidation zone.

[0053] In a possible implementation, step S103 may be based on the formula Determined, where [CO] represents the carbon monoxide concentration corresponding to the target area; V 采 Indicates the amount of carbon monoxide produced by coal in the goaf, in moles; V 架 It indicates the amount of carbon monoxide produced by the coal body after crushing, in moles; Q g Indicates the target area's excess air volume, in m 3 / s.

[0054] In the embodiment disclosed herein, by determining the amount of carbon monoxide generated by the remaining coal in the goaf and the amount of carbon monoxide generated by the broken coal body after the rack, and determining the carbon monoxide concentration by the amount of carbon monoxide generated by the remaining coal in the goaf and the amount of carbon monoxide generated by the broken coal body after the rack and the over-air volume in the target area, the carbon monoxide concentration in the target area can be more accurately determined, avoiding the danger caused by inaccurate false alarms of carbon monoxide concentrations.

[0055] In some optional embodiments, determining the amount of carbon monoxide produced by coal residue in the goaf includes:

[0056] According to the amount of coal left in the heat dissipation zone of the goaf, the carbon monoxide generation parameters and the oxidation correction coefficient of the coal left in the heat dissipation zone of the goaf, the amount of carbon monoxide generated by the coal left in the heat dissipation zone of the goaf is determined;

[0057] According to the amount of coal left in the oxidation zone of the goaf, the carbon monoxide generation parameters and the oxidation correction coefficient of the coal left in the oxidation zone of the goaf, the carbon monoxide generation amount of the coal left in the oxidation zone of the goaf is determined;

[0058] The amount of carbon monoxide generated by the residual coal in the goaf is determined based on the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf and the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf.

[0059] The amount of coal left in the heat dissipation zone of the goaf and the amount of coal left in the oxidation zone of the goaf may specifically be the volume of the coal bodies in the heat dissipation zone and the oxidation zone of the goaf.

[0060] It is worth noting that the carbon monoxide generation parameter in the present disclosure can be specifically the carbon monoxide generation rate per unit volume of coal at a certain temperature determined in advance based on the coal naturalness test, which can be expressed by δ CO (T) indicates that the unit is mol.cm -3 .s -1 Therefore, under different temperature conditions, the specific value corresponding to the carbon monoxide generation parameter may be different. In other words, the carbon monoxide generation parameter may be determined based on temperature.

[0061] The goaf heat dissipation zone residual coal oxidation correction coefficient under normal air leakage conditions can be 0.8-1; the goaf oxidation zone residual coal oxidation correction coefficient can be 0.2-0.4. Among them, the goaf heat dissipation zone and oxidation zone correction coefficient refer to the fact that the amount of carbon monoxide produced by the goaf residual coal will be reduced under the influence of air leakage in the goaf. It is generally related to the air leakage wind speed and can be determined in advance based on experience or experiments.

[0062] If the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf is expressed as V 散 The amount of carbon monoxide produced by the residual coal in the oxidation zone of the goaf is expressed as V 氧The oxidation correction coefficient of the coal in the heat dissipation zone of the goaf is expressed as α, the oxidation correction coefficient of the coal in the oxidation zone of the goaf is expressed as β, and the amount of coal in the heat dissipation zone of the goaf is expressed as Q 散 The amount of coal left in the oxidation zone of the goaf is expressed as Q 氧 , the carbon monoxide generation parameter is given by δ CO (T) indicates that the amount of carbon monoxide produced by coal in the goaf can be determined based on the following formula: V 散 =α·Q 散 ·δ CO (T); V 氧 =β·Q 氧 ·δ CO (T); V 采 =V 散 +V 氧 .

[0063] By adopting the above scheme, the carbon monoxide production in the oxidation zone and the heat dissipation zone of the goaf can be determined respectively based on the amount of residual coal in the oxidation zone and the heat dissipation zone, as well as the carbon monoxide production parameters and the correction coefficient. This can more accurately determine the carbon monoxide production in the goaf, thereby making the determined carbon monoxide concentration more accurate, effectively reducing the false alarm rate of the carbon monoxide concentration and avoiding the danger caused by false alarms.

[0064] In some optional embodiments, determining the amount of carbon monoxide produced by the crushed coal body after the rack comprises:

[0065] The amount of carbon monoxide produced by the crushed coal body after the rack is determined according to the amount of the crushed coal body after the rack and the carbon monoxide production parameters.

[0066] The amount of coal crushed after the rack can refer to the volume of the coal crushed after the rack. If the amount of coal crushed after the rack is expressed as Q 架 The amount of carbon monoxide produced by the crushed coal body after the rack is expressed as V 架 The amount of carbon monoxide produced by the crushed coal body after the rack can be determined based on the formula V 架 =Q 架 ·δ CO (T) Determine the obtained.

[0067] By adopting the above scheme, the amount of carbon monoxide generated by the post-rack crushed coal body is determined based on the amount of post-rack crushed coal body and the carbon monoxide generation parameters, so that the amount of carbon monoxide generated by the post-rack crushing media can be accurately determined, thereby making the determined carbon monoxide concentration more accurate, effectively reducing the false alarm rate of carbon monoxide concentration and avoiding the danger caused by false alarms.

[0068] In some further optional embodiments, determining the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf according to the amount of residual coal in the heat dissipation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf includes:

[0069] The amount of coal left in the heat dissipation zone of the goaf is determined based on the length of the working face, the length of the working face air intake lane, the length of the working face return air lane, the working face recovery rate, the coal seam expansion coefficient, the width of the working face heat dissipation zone and the thickness of the working face coal caving.

[0070] Similarly, the method of determining the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf includes:

[0071] The amount of coal left in the oxidation zone of the goaf is determined based on the length of the working face, the length of the working face air intake tunnel, the length of the working face return air tunnel, the working face recovery rate, the coal seam expansion coefficient, the width of the working face oxidation zone and the thickness of the working face coal caving.

[0072] Among them, the length of the working face, the length of the working face air intake lane, the length of the working face return air lane, the width of the working face heat dissipation zone, the width of the working face oxidation zone and the thickness of the coal caving in the working face can be obtained by real-time measurement through an infrared ranging device or other ranging devices, or can also be uploaded after measurement by relevant staff. The present disclosure does not specifically limit the method of obtaining length and width data such as the length of the working face and the length of the working face air intake lane.

[0073] In addition, the coal expansion coefficient refers to the volume change of the broken coal after mining. For example, 1 cubic meter of solid coal is broken and piled up to form 1.3 cubic meters, and the expansion coefficient can be 1.3. In addition, the working face recovery rate refers to the coal release rate of the working face. The higher the recovery rate, the less coal is left in the goaf. The coal is not released in the return air lane of the fully mechanized caving working face, but is directly left in the goaf. For example, a recovery rate of 80% means that 20% of the coal is left in the goaf after the frame is erected.

[0074] By adopting the above scheme, the accumulation volume of the broken coal body at different positions in the goaf after mining is approximately regarded as a rectangular parallelepiped for calculation, and the length, width and height data of different positions in the goaf are calculated respectively, and the volume of the heat dissipation zone and the oxidation zone of the goaf are calculated. Then, the carbon monoxide production in the heat dissipation zone and the oxidation zone of the goaf is determined based on the volume of the heat dissipation zone and the oxidation zone of the goaf. Then, the carbon monoxide concentration of the working face is determined based on the carbon monoxide production in the heat dissipation zone and the oxidation zone of the goaf. This can ensure that the determined carbon monoxide concentration is more accurate, effectively reduce the false alarm rate of the carbon monoxide concentration, and avoid the danger caused by false alarms.

[0075] In addition, the determining the amount of carbon monoxide generated by the crushed coal body after the rack according to the amount of the crushed coal body after the rack and the carbon monoxide generation parameter includes:

[0076] The amount of coal body crushed after the working face frame is determined according to the length of the working face, the width of the coal body crushed after the working face frame, and the height of the coal body crushed after the working face frame.

[0077] It is understandable that the crushed coal body after the rack can be roughly regarded as a cone. The width of the crushed coal body after the rack of the working face and the height of the crushed coal body after the rack of the working face can be measured in real time by an infrared distance measuring device or other distance measuring devices, or can be uploaded after measurement by relevant staff, and the present disclosure does not make specific limitations on this.

[0078] Specifically, if the length of the working face is represented by L, the width of the broken coal body after the working face is represented by H 架 The height of the broken coal body after the working face is expressed as Z 架 , the amount of coal crushed after the rack can be determined according to the following formula:

[0079] By adopting the above scheme, the amount of the crushed coal body behind the frame is determined by the length of the working face, the width of the crushed coal body behind the working face frame, and the height of the crushed coal body behind the working face frame. The volume of the crushed coal body behind the frame can be accurately obtained, and then the amount of carbon monoxide produced by the crushed coal body behind the frame can be determined based on the volume. This can ensure that the determined carbon monoxide concentration is more accurate, effectively reduce the false alarm rate of carbon monoxide concentration, and avoid dangers caused by false alarms.

[0080] In some further optional embodiments, determining the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf according to the amount of residual coal in the heat dissipation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf includes:

[0081] According to the formula Q 散 =K·H·Z 散 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )], determine the amount of coal left in the heat dissipation zone of the goaf;

[0082] According to the formula V 散 =α·Q 散 ·δ CO (T), determining the amount of carbon monoxide produced by the coal in the heat dissipation zone of the goaf;

[0083] Among them, Q 散 Indicates the amount of coal left in the heat dissipation zone of the goaf, V 散 represents the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf, K represents the coal seam expansion coefficient, H represents the coal thickness of the working face, and Z 散 represents the width of the heat dissipation zone of the working surface, L represents the length of the working surface, and L 进 Indicates the length of the air inlet lane of the working face, L 同represents the length of the return air lane of the working face, φ represents the recovery rate of the working face, α represents the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf, δ CO (T) represents the carbon monoxide generation parameter.

[0084] In one example, according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter, and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf, determining the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf includes:

[0085] According to the formula Q 氧 =K·H·Z 氧 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )], determine the amount of coal left in the oxidation zone of the goaf;

[0086] According to the formula V 氧 =β·Q 氧 ·δ CO (T), determine the amount of carbon monoxide produced by the residual coal in the oxidation zone of the goaf.

[0087] Furthermore, the carbon monoxide generation V of the coal in the goaf can be obtained. 采 =V 散 +V 氧 .

[0088] In another example, according to the amount of coal crushed after the rack and the carbon monoxide generation parameter, the amount of carbon monoxide generated by the coal crushed after the rack can be determined based on the formula V 架 =Q 架 ·δ CO (T) calculated, where V 架 It means the amount of carbon monoxide produced by the crushed coal after racking.

[0089] In order to enable those skilled in the art to better understand the overall technical solution provided by the present disclosure, the present disclosure also provides a flow chart of a method for determining carbon monoxide concentration in a fully mechanized mining face according to an exemplary embodiment. Figure 2 ,like Figure 2 As shown, the method includes:

[0090] S201. Determine the amount of coal remaining in the heat dissipation zone of the goaf.

[0091] Specifically, the amount of coal left in the heat dissipation zone of the goaf is determined according to the following formula:

[0092] Q 散 =K·H·Z 散 [(LL 进 -L 回 )·(1-φ)+(L进 +L 回 )].

[0093] S202. Determine the amount of coal remaining in the oxidation zone of the goaf.

[0094] Specifically, the amount of coal left in the oxidation zone of the goaf is determined according to the following formula:

[0095] Q 氧 =K·H·Z 氧 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )].

[0096] S203, determine the amount of coal crushed after the rack.

[0097] Specifically, the amount of coal crushed after the rack can be determined according to the following formula:

[0098] S204. Determine the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf.

[0099] Specifically, the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf is determined according to the following formula: V 散 =α·Q 散 ·δ CO (T).

[0100] S205. Determine the amount of carbon monoxide produced by the residual coal in the oxidation zone of the goaf.

[0101] Specifically, the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf is determined according to the following formula: V 氧 =β·Q 氧 ·δ CO (T).

[0102] S206. Determine the amount of carbon monoxide produced by the coal residue in the goaf.

[0103] Specifically, the amount of carbon monoxide produced by coal in the goaf is determined according to the following formula: 采 =V 散 +V 氧 .

[0104] S207. Determine the amount of carbon monoxide produced by the coal body after crushing.

[0105] Specifically, the amount of carbon monoxide produced by the crushed coal body after the rack is determined according to the following formula: 架 =Q 架 ·δ CO (T).

[0106] S208. Determine the carbon monoxide concentration corresponding to the target area.

[0107] Specifically, the carbon monoxide concentration corresponding to the target area can be determined according to the following formula:

[0108] It is worth noting that the carbon monoxide generation parameter in the above steps S204, S205 and S206, i.e., the carbon monoxide generation rate 8 CO The specific value of (T) can be different, δ CO The specific value of (T) may be determined by the temperature of the corresponding region. In addition, the parameters in the formula involved in this embodiment have been described in the above text, and will not be repeated here.

[0109] based on Figure 2 The method shown in the figure, for example, if the working face of a coal mine is 253m long and 5.4m wide respectively. The fully mechanized top coal caving mining method is adopted, the mining height is 3.2m, the coal caving height is 3.3m, and the comprehensive recovery rate of the working face is 75%; the working face adopts U-shaped ventilation method, and the air volume is 1600m 3 / min, the mined B10 coal seam is a low-metamorphic coal seam with the shortest natural combustion period of 45 days; the width of the heat dissipation zone in the goaf is 22m, and the width of the oxidation zone is 28m; the average temperature of the broken coal rock in the heat dissipation zone in the goaf of the working face is 19.5℃, and the average temperature of the broken coal rock in the oxidation zone is 20.6℃.

[0110] If the working face length L = 253m, the working face air inlet tunnel length L 进 =5.4m and the length of the return airway L 回 =5.4m, coal seam expansion coefficient K = 1.3, working face coal thickness H = 3.3m, working face recovery rate φ = 0.75, working face heat dissipation zone width Z 散 =22m and the width of the oxidation zone of the working face Z 氧 =28m.

[0111] Based on the above formula, Q can be calculated 散 =1.3×3.3×22×[(253-5.4-5.4)×(1-0.75)+5.4+5.4]=6734m 3 ;Q 氧 ==1.3×3.3×28×[(253-5.4-5.4)×(1-0.75)+5.4+5.4]=8571m 3 .

[0112] If the height of the broken coal body after the working face is H 架 =1.2m, width of broken coal body behind the working face frame Z架 =1.5m. Based on the above formula, we can get Q 架 =(1.5*1.2*253) / 3=151.8m 3 .

[0113] If the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf is α = 0.9, and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf is β = 0.3, the carbon monoxide generation rate in the heat dissipation zone is δ CO (T) = 3.92 × 10 -8 mol.cm -3 .s -1 , the carbon monoxide production rate in the oxidation zone δ CO (T) = 3.76 × 10 -8 mol.cm -3 .s -1 .

[0114] Based on the above formula, we can get V 散 =0.9*6734*3.92*10 -8 =0.000238 mol; and V 氧 =0.3*8571*3.76*10 -8 =0.000967 mol. Then we can get V 采 =0.000335mol.

[0115] If the carbon monoxide generation rate of the crushed coal body after the rack is δ CO (T) = 2.56 × 10 -6 mol.cm -3 .s -1 , that is, we can get V 架 =151.8*2.11*10 -8 =0.00032mol.

[0116] Furthermore, if the target area is the return air corner, and the return air corner excess air volume Q g =8.2m 3 / s, based on the above formula, we can get the carbon monoxide concentration corresponding to the return air corner [CO] = (0.00035 + 0.00032) / 8.2 = 79.9 * 10 -6 .

[0117] Based on the same inventive concept, Figure 3 is a block diagram of a device 30 for determining carbon monoxide concentration in a fully mechanized mining face according to an exemplary embodiment, as shown in FIG. Figure 3 As shown, the device 30 comprises:

[0118] The first determination module 31 is used to determine the amount of carbon monoxide produced by the coal residue in the goaf;

[0119] The second determination module 32 is used to determine the amount of carbon monoxide produced by the crushed coal body after the rack;

[0120] The third determination module 33 is used to determine the carbon monoxide concentration corresponding to the target area according to the carbon monoxide generation of the residual coal in the goaf, the carbon monoxide generation of the crushed coal body after the rack, and the air volume in the target area.

[0121] Optionally, the first determining module 31 is specifically configured to:

[0122] According to the amount of coal left in the heat dissipation zone of the goaf, the carbon monoxide generation parameters and the oxidation correction coefficient of the coal left in the heat dissipation zone of the goaf, the amount of carbon monoxide generated by the coal left in the heat dissipation zone of the goaf is determined;

[0123] Determine the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf;

[0124] The amount of carbon monoxide generated by the residual coal in the goaf is determined based on the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf and the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf.

[0125] Optionally, the second determining module 32 is used to:

[0126] The amount of carbon monoxide produced by the crushed coal body after the rack is determined according to the amount of the crushed coal body after the rack and the carbon monoxide production parameters.

[0127] Optionally, the first determining module 31 is further specifically configured to:

[0128] The amount of coal left in the heat dissipation zone of the goaf is determined based on the length of the working face, the length of the working face air intake lane, the length of the working face return air lane, the working face recovery rate, the coal seam expansion coefficient, the width of the working face heat dissipation zone and the thickness of the working face coal caving.

[0129] Optionally, the first determining module 31 is further specifically configured to:

[0130] The amount of coal left in the oxidation zone of the goaf is determined based on the length of the working face, the length of the working face air intake tunnel, the length of the working face return air tunnel, the working face recovery rate, the coal seam expansion coefficient, the width of the working face oxidation zone and the thickness of the working face coal caving.

[0131] Optionally, the second determining module 32 is further specifically configured to:

[0132] The amount of coal body crushed after the working face frame is determined according to the length of the working face, the width of the coal body crushed after the working face frame, and the height of the coal body crushed after the working face frame.

[0133] Optionally, the first determining module 31 is further specifically configured to:

[0134] According to the formula Q 散 =K·H·Z 散 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )], determine the amount of coal left in the heat dissipation zone of the goaf;

[0135] According to the formula V 散 =α·Q 散 ·δ CO (T), determining the amount of carbon monoxide produced by the coal in the heat dissipation zone of the goaf;

[0136] Among them, Q 散 Indicates the amount of coal left in the heat dissipation zone of the goaf, V 散 represents the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf, K represents the coal seam expansion coefficient, H represents the coal thickness of the working face, and Z 散 represents the width of the heat dissipation zone of the working surface, L represents the length of the working surface, and L 进 Indicates the length of the air inlet lane of the working face, L 回 represents the length of the return air lane of the working face, φ represents the recovery rate of the working face, α represents the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf, δ CO (T) represents the carbon monoxide generation parameter.

[0137] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0138] Figure 4 FIG. 4 is a block diagram of an electronic device 400 according to an exemplary embodiment. Figure 4 As shown, the electronic device 400 may include: a processor 401 and a memory 402. The electronic device 400 may also include one or more of a multimedia component 403, an input / output (I / O) interface 404, and a communication component 405.

[0139] The processor 401 is used to control the overall operation of the electronic device 400 to complete all or part of the steps in the above-mentioned method for determining the carbon monoxide concentration in the fully mechanized mining face. The memory 402 is used to store various types of data to support the operation of the electronic device 400, and these data may include, for example, instructions for any application or method used to operate on the electronic device 400, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 402 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 403 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 402 or sent through the communication component 405. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 404 provides an interface between the processor 401 and other interface modules, and the other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 405 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0140] In an exemplary embodiment, the electronic device 400 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned method for determining the carbon monoxide concentration in the comprehensive mining working face.

[0141] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned method for determining the carbon monoxide concentration in a fully-mechanized mining face are implemented. For example, the computer-readable storage medium may be the above-mentioned memory 402 including program instructions, and the above-mentioned program instructions may be executed by the processor 401 of the electronic device 400 to complete the above-mentioned method for determining the carbon monoxide concentration in a fully-mechanized mining face.

[0142] Figure 5 is a block diagram of an electronic device 500 according to an exemplary embodiment. For example, the electronic device 500 may be provided as a server. Figure 5 The electronic device 500 includes a processor 522, which may be one or more, and a memory 532 for storing a computer program executable by the processor 522. The computer program stored in the memory 532 may include one or more modules, each corresponding to a set of instructions. In addition, the processor 522 may be configured to execute the computer program to perform the above-mentioned method for determining the carbon monoxide concentration in a fully mechanized mining face.

[0143] In addition, the electronic device 500 may further include a power supply component 526 and a communication component 550. The power supply component 526 may be configured to perform power management of the electronic device 500, and the communication component 550 may be configured to implement communication of the electronic device 500, for example, wired or wireless communication. In addition, the electronic device 500 may further include an input / output (I / O) interface 558. The electronic device 500 may operate based on an operating system stored in the memory 532, such as Windows Server 2008. TM , Mac OSX TM , Unix TM , Linux TM etc.

[0144] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned method for determining the carbon monoxide concentration in a fully-mechanized mining face are implemented. For example, the non-transitory computer-readable storage medium may be the above-mentioned memory 532 including program instructions, and the above-mentioned program instructions may be executed by the processor 522 of the electronic device 500 to complete the above-mentioned method for determining the carbon monoxide concentration in a fully-mechanized mining face.

[0145] In another exemplary embodiment, a computer program product is also provided, which includes a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned method for determining the carbon monoxide concentration in a comprehensive mining working face when executed by the programmable device.

[0146] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0147] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0148] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for determining carbon monoxide concentration in a fully mechanized mining face, characterized in that: The method comprises: Determine the amount of carbon monoxide produced by coal residue in goaf areas; Determine the amount of carbon monoxide produced by the crushed coal after the rack; Determine the carbon monoxide concentration corresponding to the target area according to the carbon monoxide generation of the coal residue in the goaf, the carbon monoxide generation of the crushed coal body after the rack, and the excess air volume in the target area; Determining the amount of carbon monoxide produced by coal residue in the goaf includes: According to the amount of coal left in the heat dissipation zone of the goaf, the carbon monoxide generation parameters and the oxidation correction coefficient of the coal left in the heat dissipation zone of the goaf, the amount of carbon monoxide generated by the coal left in the heat dissipation zone of the goaf is determined; Determine the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf; Determine the amount of carbon monoxide generated by the coal left behind in the goaf according to the amount of carbon monoxide generated by the coal left behind in the heat dissipation zone of the goaf and the amount of carbon monoxide generated by the coal left behind in the oxidation zone of the goaf; Determining the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf according to the amount of residual coal in the heat dissipation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf includes: Determine the amount of coal left in the heat dissipation zone of the goaf according to the length of the working face, the length of the air inlet lane of the working face, the length of the return air lane of the working face, the recovery rate of the working face, the coal seam expansion coefficient, the width of the heat dissipation zone of the working face, and the thickness of the coal caving of the working face; Determining the amount of carbon monoxide generated by the residual coal in the heat dissipation zone of the goaf according to the amount of residual coal in the heat dissipation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf includes: According to the formula Q 散 =K·H·Z 散 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )], determine the amount of coal left in the heat dissipation zone of the goaf; According to the formula V 散 =α·Q 散 ·δ CO (T), determining the amount of carbon monoxide produced by the coal in the heat dissipation zone of the goaf; Among them, Q 散 Indicates the amount of coal left in the heat dissipation zone of the goaf, V 散 represents the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf, K represents the coal seam expansion coefficient, H represents the coal thickness of the working face, and Z 散 represents the width of the heat dissipation zone of the working surface, L represents the length of the working surface, and L 进 Indicates the length of the air inlet lane of the working face, L 回 represents the length of the return air lane of the working face, φ represents the recovery rate of the working face, α represents the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf, δ CO (T) represents the carbon monoxide generation parameter; T represents the temperature of the area corresponding to the heat dissipation zone of the goaf.

2. The method according to claim 1, characterized in that Determining the amount of carbon monoxide produced by the crushed coal body after the rack includes: The amount of carbon monoxide produced by the crushed coal body after the rack is determined according to the amount of the crushed coal body after the rack and the carbon monoxide production parameters.

3. The method according to claim 1, characterized in that Determining the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf includes: The amount of coal left in the oxidation zone of the goaf is determined based on the length of the working face, the length of the working face air intake tunnel, the length of the working face return air tunnel, the working face recovery rate, the coal seam expansion coefficient, the width of the working face oxidation zone and the thickness of the working face coal caving.

4. The method according to claim 2, characterized in that: Determining the amount of carbon monoxide produced by the crushed coal body after the rack according to the amount of the crushed coal body after the rack and the carbon monoxide production parameter includes: The amount of coal body crushed after the working face frame is determined according to the length of the working face, the width of the coal body crushed after the working face frame, and the height of the coal body crushed after the working face frame.

5. A device for determining carbon monoxide concentration in a fully mechanized mining face, characterized in that: The device comprises: The first determination module is used to determine the amount of carbon monoxide produced by the coal residue in the goaf; The second determination module is used to determine the amount of carbon monoxide produced by the crushed coal body after the rack; The third determination module is used to determine the carbon monoxide concentration corresponding to the target area according to the carbon monoxide generation of the coal residue in the goaf, the carbon monoxide generation of the crushed coal body after the rack, and the excess air volume in the target area; The first determining module is used for: According to the amount of coal left in the heat dissipation zone of the goaf, the carbon monoxide generation parameters and the oxidation correction coefficient of the coal left in the heat dissipation zone of the goaf, the amount of carbon monoxide generated by the coal left in the heat dissipation zone of the goaf is determined; Determine the amount of carbon monoxide generated by the residual coal in the oxidation zone of the goaf according to the amount of residual coal in the oxidation zone of the goaf, the carbon monoxide generation parameter and the oxidation correction coefficient of the residual coal in the oxidation zone of the goaf; Determine the amount of carbon monoxide generated by the coal left behind in the goaf according to the amount of carbon monoxide generated by the coal left behind in the heat dissipation zone of the goaf and the amount of carbon monoxide generated by the coal left behind in the oxidation zone of the goaf; The first determining module is further used for: Determine the amount of coal left in the heat dissipation zone of the goaf according to the length of the working face, the length of the air inlet lane of the working face, the length of the return air lane of the working face, the recovery rate of the working face, the coal seam expansion coefficient, the width of the heat dissipation zone of the working face, and the thickness of the coal caving of the working face; The first determining module is further used for: According to the formula Q 散 =K·H·Z 散 [(LL 进 -L 回 )·(1-φ)+(L 进 +L 回 )], determine the amount of coal left in the heat dissipation zone of the goaf; According to the formula V 散 =α·Q 散 ·δ CO (T), determining the amount of carbon monoxide produced by the coal in the heat dissipation zone of the goaf; Among them, Q 散 Indicates the amount of coal left in the heat dissipation zone of the goaf, V 散 represents the amount of carbon monoxide produced by the residual coal in the heat dissipation zone of the goaf, K represents the coal seam expansion coefficient, H represents the coal thickness of the working face, and Z 散 represents the width of the heat dissipation zone of the working surface, L represents the length of the working surface, and L 进 Indicates the length of the air inlet lane of the working face, L 回 represents the length of the return air lane of the working face, φ represents the recovery rate of the working face, α represents the oxidation correction coefficient of the residual coal in the heat dissipation zone of the goaf, δ CO (T) represents the carbon monoxide generation parameter; T represents the temperature of the area corresponding to the heat dissipation zone of the goaf.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 4 are implemented.

7. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 4.

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