Method and device for determining coal spontaneous combustion inhibition performance of fireproof fire extinguishing material

Abstract

The invention provides a method and a device for determining the coal spontaneous combustion inhibition performance of a fireproof fire extinguishing material, and belongs to the technical field of inhibition performance determination. The multiple experiment parameters comprise gas volume parameters corresponding to different reaction stages in the coal spontaneous combustion inhibition performance determination experiment process; the coal spontaneous combustion inhibition performance determination experiment is used for performing an experiment on the target coal sample to determine the inhibition performance of the target fireproof fire extinguishing material on coal spontaneous combustion; for each reaction stage, determining a comprehensive inhibition rate corresponding to the reaction stage based on the gas volume parameter corresponding to the reaction stage; determining a target inhibition rate based on the comprehensive inhibition rate corresponding to each reaction stage; the target inhibition rate is used for representing the inhibition performance of the target fireproof fire extinguishing material on coal spontaneous combustion. The invention can provide the method for determining the coal spontaneous combustion inhibition performance of the fireproof fire extinguishing material.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of determination of inhibition performance, and more particularly relates to a method and device for determining the inhibition performance of fire extinguishing materials on coal spontaneous combustion. BACKGROUND

[0002] Coal is the main energy source and industrial raw material in China. However, due to the complex coal seam occurrence conditions and limited mining technology, mine disasters occur from time to time, and the situation of coal mine safety production is becoming increasingly severe. Among them, coal spontaneous combustion is one of the main forms of mine disasters, and a large amount of coal resources with mining value is lost due to coal spontaneous combustion, resulting in waste of resources.

[0003] Fire prevention and extinguishing by fire retardant (i.e. fire extinguishing materials) can inhibit the occurrence of coal spontaneous combustion from the source, and the coal sample after retardation will not relight. In recent years, it has attracted widespread attention from domestic and foreign scholars. Although the fire prevention and extinguishing technology of fire extinguishing materials is widely used in China, the performance evaluation and test equipment of fire extinguishing materials are still very weak.

[0004] Therefore, a method for determining the inhibition performance of fire extinguishing materials on coal spontaneous combustion is needed. SUMMARY

[0005] The purpose of the present application is to provide a method and device for determining the inhibition performance of fire extinguishing materials on coal spontaneous combustion.

[0006] In a first aspect, the present application provides a method for determining the inhibition performance of fire extinguishing materials on coal spontaneous combustion, which is applied to a system for determining the inhibition performance of fire extinguishing materials on coal spontaneous combustion. The system comprises a gas supply system, a program-controlled temperature rising system, a retardation device system, a monitoring system and a data acquisition and analysis system. The program-controlled temperature rising system is connected with the gas supply system and the retardation device system respectively. The monitoring system is connected with the retardation device system and the data acquisition and analysis system respectively. The data acquisition and analysis system is also connected with the retardation device system. The performance determination method is executed by an electronic device in the data acquisition and analysis system. The performance determination method comprises: obtaining a plurality of experimental parameters; the plurality of experimental parameters include gas volume parameters corresponding to different reaction stages in the coal spontaneous combustion inhibition performance determination experiment; the coal spontaneous combustion inhibition performance determination experiment is used to determine the inhibition performance of the target fire extinguishing material on coal spontaneous combustion by performing experiments on a target coal sample; the target coal sample is a coal sample obtained by treating a raw coal sample with the target fire extinguishing material; For each reaction stage, the comprehensive retardation rate corresponding to the reaction stage is determined based on the gas volume parameter corresponding to the reaction stage. Determine the target inhibition rate based on the comprehensive inhibition rate corresponding to each reaction stage; the target inhibition rate is used to represent the inhibition performance of the target fire extinguishing material on coal spontaneous combustion.

[0007] In a second aspect, the application provides a device for measuring the inhibition performance of a fire extinguishing material on coal spontaneous combustion, which is arranged in a data acquisition and analysis system, and is arranged in an electronic device in the data acquisition and analysis system. The data acquisition and analysis system is included in a performance measurement system for measuring the inhibition performance of a fire extinguishing material on coal spontaneous combustion, and the performance measurement system further includes a gas supply system, a program-controlled temperature rising system, an inhibition device system, and a monitoring system. The program-controlled temperature rising system is connected with the gas supply system and the inhibition device system. The monitoring system is connected with the inhibition device system and the data acquisition and analysis system. The data acquisition and analysis system is further connected with the inhibition device system. The performance measurement device includes: A data acquisition module is configured to acquire a plurality of experimental parameters, including gas volume parameters corresponding to different reaction stages in a coal spontaneous combustion inhibition performance measurement experiment. The coal spontaneous combustion inhibition performance measurement experiment is used to determine the inhibition performance of a target fire extinguishing material on coal spontaneous combustion by performing experiments on a target coal sample. The target coal sample is obtained by treating a raw coal sample with the target fire extinguishing material. An inhibition rate determination module is configured to determine, for each reaction stage, a comprehensive inhibition rate corresponding to the reaction stage based on the gas volume parameters corresponding to the reaction stage. Determine the target inhibition rate based on the comprehensive inhibition rate corresponding to each reaction stage; the target inhibition rate is used to represent the inhibition performance of the target fire extinguishing material on coal spontaneous combustion.

[0008] In a third aspect, the application provides an electronic device including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the steps of the above-mentioned method for measuring the inhibition performance of a fire extinguishing material on coal spontaneous combustion are implemented.

[0009] In a fourth aspect, the application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the steps of the above-mentioned method for measuring the inhibition performance of a fire extinguishing material on coal spontaneous combustion are implemented.

[0010] The method and device for measuring the inhibition performance of a fire extinguishing material on coal spontaneous combustion provided by the application have the following advantages: The application embodiment provides a kind of fire extinguishing material to the determination method of coal spontaneous combustion inhibition performance applied to specific determination system, the system includes gas supply system, program control temperature system, inhibition device system, monitoring system and data acquisition and analysis system, by systematic determination mode, can be comprehensive, accurately obtain multiple experimental parameters, such as the gas volume parameter corresponding to different reaction stages in the determination experiment process of coal spontaneous combustion inhibition performance.The corresponding comprehensive inhibition rate is determined for each reaction stage, and the target inhibition rate is further determined to represent the inhibition performance of target fire extinguishing material to coal spontaneous combustion, the determination method provides scientific and comprehensive means for the performance evaluation of fire extinguishing material, makes up the deficiency of prior art in performance evaluation link, helps to promote the further development and improvement of fire extinguishing material technology. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0012] Figure 1 A flowchart of a determination method of coal spontaneous combustion inhibition performance of fire extinguishing material provided by an embodiment of the present application is shown in the figure. Figure 2 A flowchart of a second determination method of coal spontaneous combustion inhibition performance of fire extinguishing material provided by an embodiment of the present application is shown in the figure. Figure 3 A structural diagram of a determination system of coal spontaneous combustion inhibition performance of fire extinguishing material provided by an embodiment of the present application is shown in the figure. Figure 4 A structural block diagram of a determination device of coal spontaneous combustion inhibition performance of fire extinguishing material provided by an embodiment of the present application is shown in the figure. Figure 5 A schematic block diagram of an electronic device provided by an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0013] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the present application, such as specific system structures, techniques, etc. However, it should be apparent to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary details.

[0014] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will be described by specific embodiments in conjunction with the drawings.

[0015] The method for determining the coal spontaneous combustion inhibition performance of the fireproof and fire extinguishing material provided in the embodiment of the application is applied to a system for determining the coal spontaneous combustion inhibition performance of the fireproof and fire extinguishing material, and the system comprises a gas supply system, a program-controlled temperature rising system, an inhibition device system, a monitoring system and a data acquisition and analysis system. The program-controlled temperature rising system is connected with the gas supply system and the inhibition device system respectively. The monitoring system is connected with the inhibition device system and the data acquisition and analysis system respectively. The data acquisition and analysis system is further connected with the inhibition device system. The performance determination method is executed by an electronic device in the data acquisition and analysis system, and specifically can be executed by a computer. Please refer to Figure 1 The method can comprise the following steps. S101: Obtain a plurality of experimental parameters. The plurality of experimental parameters comprise gas volume parameters corresponding to different reaction stages in the coal spontaneous combustion inhibition performance determination experiment. The coal spontaneous combustion inhibition performance determination experiment is used to determine the coal spontaneous combustion inhibition performance of the target fireproof and fire extinguishing material by performing an experiment on a target coal sample. The target coal sample is a coal sample obtained by processing an original coal sample with the target fireproof and fire extinguishing material.

[0016] In the embodiment, the plurality of experimental parameters refer to a set of various data indexes collected by the monitoring system during the entire coal spontaneous combustion inhibition performance determination experiment, which can comprise gas-related quantitative data, and can also involve auxiliary parameters such as temperature and time. The gas volume parameter specifically refers to the volume quantitative data of gases generated or consumed by coal during the spontaneous combustion process, such as CO, SO2, CO2 or O2. The coal spontaneous combustion inhibition performance determination experiment can analyze the oxidation differences (such as gas products and temperature rising rates) of the original coal sample (untreated coal) and the target coal sample (coal treated with the fireproof and fire extinguishing material) under the same conditions, so as to determine the inhibition performance of the material. In the embodiment of the application, the fireproof and fire extinguishing material is the inhibitor referred to in the application.

[0017] In the embodiment, the target coal sample refers to a coal sample treated with the target fireproof and fire extinguishing material in the experiment, which is the experimental group of the experiment. The original coal sample refers to an original coal sample that has not been treated with any fireproof and fire extinguishing material, which is the control group of the experiment.

[0018] S102: For each reaction stage, determine the comprehensive inhibition rate corresponding to the reaction stage based on the gas volume parameter corresponding to the reaction stage.

[0019] In the embodiment, each reaction stage refers to different stages in the process of coal spontaneous combustion, which are divided according to the intensity of oxidation. The stages can be divided into an oxidation self-heating stage and a deep oxidation stage. The oxidation self-heating stage refers to the stage in which the temperature of coal rises from the ambient temperature to a certain critical value (such as before the detection of the characteristic gas C2H4), the oxidation reaction is relatively gentle, and mainly produces gases such as CO and CO2, and the temperature rising rate is slow. The deep oxidation stage refers to the stage in which the characteristic gas C2H4 is detected, the temperature of coal rises significantly, the oxidation reaction accelerates rapidly, the heat release rate increases sharply, and it approaches the critical state before combustion. In the embodiment, the oxidation self-heating stage is determined before the detection of the characteristic gas C2H4, and the deep oxidation stage is determined after the detection of the characteristic gas C2H4.

[0020] In the embodiment, the gas volume parameter corresponding to the reaction stage refers to the gas volume quantification data related to coal oxidation collected by the monitoring system in the above certain reaction stage, which is the core basis for calculating the inhibition effect. Specifically, it includes: CO volume (reflecting the oxidation core product), CO2 volume (reflecting the oxidation completeness), and O2 consumption volume (reflecting the reaction intensity of coal and oxygen) for conventional coal. SO2 volume (substituting CO to eliminate the interference of sulfur content on detection), CO2 volume, and O2 consumption volume for high-sulfur coal / ultra-high-sulfur coal.

[0021] In the embodiment, the comprehensive inhibition rate corresponding to the reaction stage refers to the quantification value that can comprehensively reflect the inhibition effect of the inhibitor, which is calculated based on multiple gas indicators for a certain reaction stage. Specifically, it can include initial inhibition rate, CO / CO2 ratio inhibition effect, and O2 consumption inhibition effect.

[0022] S103: determining a target inhibition rate based on the comprehensive inhibition rate corresponding to each reaction stage; the target inhibition rate is used to represent the inhibition performance of the target fire prevention and extinguishing material on coal spontaneous combustion.

[0023] In the embodiment, the comprehensive inhibition rate corresponding to each reaction stage refers to the comprehensive inhibition rate calculated in different stages of coal spontaneous combustion (such as the oxidation self-heating stage and the deep oxidation stage). As mentioned before, the comprehensive inhibition rate is a stage inhibition effect quantification value obtained by weighting multiple indicators such as CO / SO2 ratio, CO / CO2 ratio, and O2 consumption.

[0024] The comprehensive inhibition rates of different stages are targeted: the comprehensive inhibition rate of the oxidation self-heating stage reflects the inhibition effect of the inhibitor on the slow oxidation of coal at low temperature; and the comprehensive inhibition rate of the deep oxidation stage reflects the inhibition effect of the inhibitor on the rapid oxidation of coal at high temperature.

[0025] From the above, the determination method provided by the embodiments of the present application is applied to a determination system comprising a gas supply, a program-controlled temperature rise, a resistance device, monitoring, and a data acquisition and analysis system, and each system is closely connected and cooperates to obtain various rich and accurate experimental parameters. In the determination experiment of the coal spontaneous combustion inhibition performance, the volume parameters of gases such as CO, SO2, CO2 or O2 in different reaction stages can be obtained, which provides a solid foundation for accurately evaluating the inhibition performance of the fire extinguishing material on the coal spontaneous combustion. Compared with the traditional single index or simple comparison evaluation method, the scientificity and accuracy of the performance determination are improved. The embodiments of the present application finely divide the coal spontaneous combustion process into an oxidation self-heating stage and a deep oxidation stage, and determine the comprehensive resistance rate for each stage. In the oxidation self-heating stage, the coal temperature rises from the ambient temperature to the critical value, the oxidation reaction is gentle, and mainly produces gases such as CO and CO2, and the temperature rise rate is slow. In the deep oxidation stage, after the characteristic gas C2H4 is detected, the coal temperature rises significantly, the oxidation reaction is accelerated, and the heat release rate increases sharply. Through fine division, the inhibition effect of the resistance agent in different oxidation stages can be deeply understood. In the embodiments, the comprehensive resistance rate is determined by comprehensively considering various gas indexes. For conventional coal, the volume of CO (reflecting the oxidation core product), the volume of CO2 (reflecting the degree of complete oxidation), and the volume of O2 consumption (reflecting the reaction intensity of coal and oxygen) are used as the basis; for high-sulfur coal / ultra-high-sulfur coal, the volume of SO2 (instead of CO, eliminating the interference of sulfur on detection), the volume of CO2, and the volume of O2 consumption are used. Through the multi-index comprehensive consideration of different coal types, and combined with the initial resistance rate, the CO / CO2 ratio resistance effect and the O2 consumption resistance effect, the inhibition effect of the resistance agent in each reaction stage can be quantitatively calculated comprehensively and objectively, avoiding the one-sidedness and limitations of single index evaluation.

[0026] In an embodiment of the present application, the comprehensive resistance rate corresponding to the reaction stage is determined based on the gas volume parameter corresponding to the reaction stage, comprising: determining an initial resistance rate, a first resistance effect and a second resistance effect based on the gas volume parameter corresponding to the reaction stage; wherein the first resistance effect is the resistance effect of the target fire extinguishing material on CO / CO2; and the second resistance effect is the resistance effect of the target fire extinguishing material on O2; performing weighted calculation on the initial resistance rate, the first resistance effect and the second resistance effect to determine the comprehensive resistance rate corresponding to the reaction stage.

[0027] In the embodiment, the initial inhibition rate is a basic index for measuring the inhibition of the coal spontaneous combustion by the inhibitor, is directly calculated based on the volume change of the characteristic gas generated by the coal oxidation, and reflects the inhibition ability of the inhibitor to the core product of the coal oxidation. The first inhibition effect refers to the inhibition effect of the inhibitor on the CO / CO2 ratio in the coal oxidation process, and reflects the affected degree of the complete degree of the coal oxidation. The second inhibition effect refers to the inhibition effect of the inhibitor on the O2 consumption in the coal oxidation process, and reflects the affected degree of the reaction intensity of the coal and oxygen.

[0028] In the embodiment, the weights of the initial inhibition rate, the first inhibition effect and the second inhibition effect in the weighted calculation are determined based on the entropy weight method, and can also be set by the user as needed, for example, the weight corresponding to the initial inhibition rate is 0.4, the weight corresponding to the first inhibition effect is 0.3, and the weight corresponding to the second inhibition effect is 0.3.

[0029] From the above, it can be concluded that the embodiments of the present application evaluate the inhibition effect of the inhibitor from multiple key dimensions, thereby improving the accuracy of the determination result. The initial inhibition rate is a basic index, which is directly calculated based on the volume change of the characteristic gas generated by the coal oxidation, and can accurately reflect the inhibition ability of the inhibitor to the core product of the coal oxidation, thereby providing a basic and key reference for evaluating the inhibition effect. The first inhibition effect focuses on the inhibition of the inhibitor on the CO / CO2 ratio in the coal oxidation process. The ratio can effectively reflect the complete degree of the coal oxidation, and by evaluating the inhibition effect, the depth of the influence of the inhibitor on the coal oxidation process can be understood. The second inhibition effect focuses on the inhibition of the inhibitor on the O2 consumption in the coal oxidation process. The O2 consumption directly reflects the reaction intensity of the coal and oxygen, and the evaluation of the inhibition effect of the index helps to understand the role of the inhibitor in reducing the reaction intensity. By comprehensively evaluating the three dimensions, the one-sidedness caused by the single index evaluation is avoided, and the inhibition effect of the inhibitor in the specific reaction stage can be comprehensively and accurately determined.

[0030] In one embodiment of the present application, characterized in that before determining the initial inhibition rate based on the gas volume parameter corresponding to the reaction stage, further comprising: determining the calculation formula of the initial inhibition rate based on the sulfur content of the target coal sample, to obtain a first formula; Determining the initial inhibition rate based on the gas volume parameter corresponding to the reaction stage, comprising: Determining the initial inhibition rate based on the first formula and the gas volume parameter corresponding to the reaction stage.

[0031] In the embodiment, the calculation formula of the initial inhibition rate based on the sulfur content of the target coal sample comprises: In response to the sulfur content of the target coal sample being less than a preset sulfur content threshold, the first formula is determined as: , .

[0032] in, IE Indicates the initial resistance rate, the unit is percentage (%); V t Indicates the volume of CO produced by the target coal sample in this reaction stage, in units of 10 -6 ; V u It represents the volume of CO produced by the raw coal sample at this reaction stage, in units of 10 -6 ; C n Indicates the CO volume at the nth test point in the target coal sample at this reaction stage, in units of 10 -6 , when n=1, C0=0; C n-1 It represents the CO volume at the (n-1)th test point in the target coal sample at this reaction stage, in units of 10 -6 ; It represents the volume of CO at the nth test point in the raw coal sample at this reaction stage, in units of 10 -6 , when n=1, =0; It represents the volume of CO at the (n-1)th test point in the raw coal sample at this reaction stage, in units of 10 -6 ; i Indicates the maximum number of measurements. Test points refer to the time points during the resistance test at which the gas volume concentration is periodically measured and recorded. According to relevant standards and specifications, various other volumes or volume concentrations of raw and resistance coal samples can be recorded every 30 seconds.

[0033] In response to the sulfur content of the target coal sample being greater than or equal to a preset sulfur content threshold, the first formula is determined as: ， ， 。

[0034] in, IE Indicates the initial resistance rate, the unit is percentage (%); V ts It represents the volume of SO2 produced by the target coal sample in this reaction stage, in units of 10 -6 ; V us It represents the volume of SO2 produced by the raw coal sample at this reaction stage, in units of 10 -6 ; S n It represents the SO2 volume at the nth test point in the target coal sample at this reaction stage, in units of 10-6 S0= 0 when n = 1; represents the SO2 volume of the (n-1)th test point in the target coal sample in this reaction stage, in units of 10 -6 ; represents the SO2 volume of the nth test point in the raw coal sample in this reaction stage, in units of 10 -6 S0= 0 when n = 1, = 0, represents the SO2 volume of the (n-1)th test point in the raw coal sample in this reaction stage, in units of 10 -6 ; i represents the maximum number of measurements.

[0035] In this embodiment, the preset sulfur content threshold can be 2.01%, that is, when the target coal sample is a conventional coal, not a high-sulfur coal (sulfur content 2.01%-3.00%) or a very high-sulfur coal (sulfur content > 3.00%), the inhibition rate can be determined based on the content of carbon monoxide, and when the target coal sample is a high-sulfur coal or a very high-sulfur coal, the inhibition rate can be determined based on the content of sulfur dioxide.

[0036] From the above, it can be seen that the embodiments of the present application determine the calculation formula of the initial inhibition rate according to the sulfur content of the target coal sample, which fully considers the influence of the difference in chemical composition of different coal samples on the evaluation of the inhibition effect. For a conventional coal sample, the sulfur content is less than the preset sulfur content threshold (such as 2.01%), at which time the inhibition rate is determined based on the content of carbon monoxide (CO). Because the sulfur content in the conventional coal sample has a relatively small influence on the oxidation reaction and the gas product, CO as the core product in the coal oxidation process can more accurately reflect the oxidation degree of the coal and the inhibition effect of the inhibitor. For a high-sulfur coal (sulfur content 2.01%-3.00%) or a very high-sulfur coal (sulfur content > 3.00%), the sulfur content is high, and the sulfur content will participate in the reaction and produce sulfur dioxide (SO2) in the coal oxidation process. If the inhibition rate is still calculated based on the CO content, the interference of the sulfur content will result in inaccurate results. Therefore, the embodiments of the present application adopt a calculation formula based on the SO2 content for high-sulfur and very high-sulfur coal samples, effectively eliminating the interference of the sulfur content on the detection, making the calculation of the initial inhibition rate more scientific and accurate, and being able to truly reflect the inhibition effect of the inhibitor in different types of coal samples. In the calculation formula of the initial inhibition rate, the gas volume parameters of multiple test points and the maximum number of measurements are fully considered. Taking the formula based on the CO content as an example, the formula not only contains the total volume of CO generated by the target coal sample and the raw coal sample in this reaction stage (V t and V u ), but also details the CO volume of the target coal sample and the raw coal sample at different test points (C n , C n-1 , , ) and the maximum number of measurements (i). The above detailed parameter consideration method can comprehensively and carefully reflect the gas generation of coal in the entire reaction stage, and avoid the influence of local data fluctuation or measurement error on the calculation result of the inhibition rate. The initial inhibition rate calculated by the embodiment of the application is more stable and reliable by comprehensively considering the data of multiple test points, and can more accurately represent the inhibition effect of the inhibition agent on the coal spontaneous combustion, thereby providing solid technical support for the coal mine fire prevention and extinguishing work.

[0037] In an embodiment of the application, the first inhibition effect can be determined based on a third formula, and the third formula comprises: , , , , .

[0038] wherein, I 1 represents the first inhibition effect in the reaction stage, that is, the inhibition effect of the inhibition agent (target fire extinguishing material) on CO / CO2 in the reaction stage, and the unit is percentage (%); R t represents the CO / CO2 ratio of the target coal sample in the reaction stage, and the unit is percentage (%); R u represents the CO / CO2 ratio of the raw coal sample in the reaction stage, and the unit is percentage (%); V t represents the CO volume generated by the target coal sample in the reaction stage, and the unit is 10 -6 ; V u represents the CO volume generated by the raw coal sample in the reaction stage, and the unit is 10 -6 ; V tc represents the CO2 volume generated by the target coal sample in the reaction stage, and the unit is 10 -6 ; V uc represents the CO2 volume generated by the raw coal sample in the reaction stage, and the unit is 10 -6 ; C n represents the volume of the nth test point in the target coal sample in the reaction stage, and the unit is 10 -6 , when n=1, C0=0; represents the volume of the nth test point in the raw coal sample in the reaction stage, and the unit is 10 -6 , when n=1, =0. i represents the maximum number of measurements, and the test parallel error of the same sample is within ±3%.

[0039] The second inhibition effect can be determined based on a fourth formula, which can be: , , .

[0040] wherein, I 2 represents the second inhibition effect at the reaction stage, i.e., the inhibition effect of the inhibitor on O2, in percentage (%); V to represents the volume of O2 in the sealed environment for the target coal sample at the reaction stage, in 10 -6 ; V uo represents the volume of O2 in the sealed environment for the raw coal sample at the reaction stage, in 10 -6 ;C n represents the volume of CO at the nth test point in the target coal sample at the reaction stage, in 10 -6 , when n = 1, C0= 0; represents the volume of CO at the nth test point in the raw coal sample at the reaction stage, in 10 -6 , when n = 1, = 0. i represents the maximum number of measurements. The parallel error of the same sample is within ± 3%. n represents the number of test points.

[0041] The inhibition rate IE, the inhibition effect of the inhibitor on CO / CO2 I 1, the inhibition effect of the inhibitor on O2 I 2, a weighted method is used to give different weights according to the importance of each gas in the coal spontaneous combustion process. The process of determining each weight based on the entropy weight method can be set by the person skilled in the art as needed, and in this embodiment, it can be determined by the following method: First, the experimental process is divided into two stages: the oxidation self-heating stage and the deep oxidation stage, wherein C2H4 is the index gas for the coal to enter the deep oxidation stage, i.e., when the temperature rises to a certain point, and the detachable sensor detects that the concentration of C2H4 is not 0, it means that it has entered the deep oxidation stage. The temperature point is the demarcation point, and the temperature point is denoted as TC.

[0042] (1) Calculate the comprehensive inhibition rate of the inhibitor on the oxidation self-heating stage of coal spontaneous combustion, and the experimental data are shown in Table 1.

[0043]

[0044] Each parameter in the matrix is actually the result of formula calculation:

[0045] Wherein, represents the calculation result of the jth index corresponding to the kth experiment, wherein the first index refers to the initial inhibition rate, the second index refers to the first inhibition effect, and the third index refers to the second inhibition effect, A represents the test result of the jth index of the original coal sample in the kth experiment, B represents the test result of the jth index of the coal sample treated by the inhibition agent (target coal sample) in the kth experiment, and each parameter in the matrix is actually the degree of change of a specific test result before and after the inhibition agent treatment.

[0046] Note: Experiments 1-1, 2-1, 3-1, etc. are the oxidation self-heating stages of each experiment.

[0047] Wherein, IE-1 represents the initial inhibition rate corresponding to the oxidation self-heating stage, I1-1 represents the first inhibition effect corresponding to the oxidation self-heating stage, and I2-1 represents the second inhibition effect corresponding to the oxidation self-heating stage.

[0048] The data is standardized by range method:

[0049] is the calculation result of the jth index corresponding to the kth experiment after labeling, represents the minimum value, represents the maximum value, and the experimental data is shown in Table 2.

[0050]

[0051] The experimental data is shown in Table 3, and the specific gravity matrix P is calculated m×3，：

[0052]

[0053] The experimental data is shown in Table 4, and the information entropy of the calculation index is calculated:

[0054] represents the information entropy of the jth index after m experiments

[0055] The experimental data is shown in Table 5, and the index weight is calculated:

[0056]

[0057] is the weight corresponding to the initial inhibition rate in the oxidation self-heating stage, is the weight corresponding to the first inhibiting effect in the oxidation self-heating stage, is the weight corresponding to the second inhibiting effect in the oxidation self-heating stage. represents the weight corresponding to the jth index in the oxidation self-heating stage, j = 3.

[0058] For example (the experimental data is randomly selected, only for reference), as shown in Table 6:

[0059] The data is standardized by the range method, as shown in Table 7:

[0060] Calculate the proportion matrix P 3×3 , as shown in Table 8:

[0061] Calculate the information entropy of the index, as shown in Table 9:

[0062] Calculate the index weight, as shown in Table 10:

[0063] (2) Calculate the comprehensive inhibiting rate of the inhibiting agent on the deep oxidation stage of coal spontaneous combustion, as shown in Table 11:

[0064] Note: Experiment 1-2, Experiment 2-2, Experiment 3-2, etc. are the deep oxidation stages of each experiment.

[0065] The calculation process and content 1 are the same, and the specific calculation method is not described again. The weight corresponding to each index in the deep oxidation stage is shown in Table 12:

[0066] Among them, IE-2 represents the initial inhibiting rate corresponding to the deep oxidation stage, I1-2 represents the first inhibiting effect corresponding to the deep oxidation stage, and I2-2 represents the second inhibiting effect corresponding to the deep oxidation stage. is the weight corresponding to the initial inhibiting rate in the deep oxidation stage, is the weight corresponding to the first inhibiting effect in the deep oxidation stage, is the weight corresponding to the second inhibiting effect in the deep oxidation stage. represents the weight corresponding to the jth parameter in the deep oxidation stage, j = 3.

[0067] CO is the characteristic product of the coal oxidation self-heating stage, and its generation rate is directly related to the oxidation activity of coal. The inhibitor reduces CO generation by inhibiting the oxidation chain reaction, at which time the change in CO concentration (IE) is the most sensitive indicator for evaluating the inhibition effect; With the intensification of oxidation reaction, the consumption of O2 by coal increases significantly, and the inhibitor reduces O2 contact through physical covering or chemical inactivation, at which time the change in O2 consumption should be given more attention.

[0068] That is, in the early stage of coal spontaneous combustion, the change in CO concentration can better reflect the inhibition effect; with the progress of oxidation, the role of O2 consumption is more prominent. Therefore, under ideal conditions, assuming that the weight of the inhibition rate of the two stages should follow the following two rules: ，

[0069] Since the weights involved in the calculation of the inhibition rates of the two stages have been calculated through experimental data and entropy weight method, by comparing whether the above two weight size relationships are met by the two groups of data, and calculating the difference value, the comprehensive fire retardant performance of different kinds of inhibitors on different stages of spontaneous combustion of different coal samples is verified.

[0070] If the comparison of the two groups of weight distribution conforms to the assumed law, then in the later stage, a large amount of data can be collected through multiple experiments or artificial intelligence algorithm model, and the precise value of the two groups of weight distribution contained in the comprehensive inhibition rate of the inhibitor to the coal sample is further optimized and determined, and recorded in the database in the electronic equipment.

[0071] From the above, it can be concluded that the third formula accurately quantifies the first inhibition effect, that is, the inhibition effect of the inhibitor on the CO / CO2 ratio. The formula takes into account the CO / CO2 ratio (R t and R u ) of the target coal sample and the raw coal sample in the reaction stage, as well as the CO volume (V t and V u ) and CO2 volume (V tc and V uc ) generated by them, and also includes the CO volume data (C n and ) and the maximum number of measurements (i), can accurately reflect the influence degree of the inhibitor on the CO / CO2 ratio in the coal oxidation process. The CO / CO2 ratio is a key indicator to measure the degree of coal oxidation. Through the accurate quantification of the inhibition effect, a scientific and reliable basis is provided for evaluating the performance of the inhibitor in inhibiting the coal oxidation process, which helps to screen high-quality inhibitors that can effectively reduce the speed and degree of coal oxidation. The fourth formula provides a fine quantitative method for the second inhibition effect, i.e., the inhibition effect of the inhibitor on O2. The formula includes the O2 volume (V to and V uo ) of the target coal sample and the raw coal sample in a sealed environment, and the CO volume data (C n and ) of different test points and the maximum number of measurements (i). Since the reaction of coal and O2 is the core link of coal spontaneous combustion, the inhibition effect of the inhibitor on the consumption of O2 directly reflects its control ability on the reaction intensity of coal spontaneous combustion. Through the accurate calculation of the second inhibition effect by the formula, the role of the inhibitor in reducing the reaction of coal and O2 can be accurately evaluated, which provides an important reference for selecting an inhibitor that can effectively reduce the risk of coal spontaneous combustion.

[0072] In an embodiment of the present application, the reaction stage includes an oxidation self-heating stage and a deep oxidation stage. The plurality of experimental parameters further include the temperature at the start of the coal spontaneous combustion inhibition performance determination experiment, the temperature when the sensor detects the target characteristic gas, and the temperature at the end of the coal spontaneous combustion inhibition performance determination experiment. The target inhibition rate is determined based on the comprehensive inhibition rate corresponding to each reaction stage, including: The target inhibition rate is determined by substituting the comprehensive inhibition rate corresponding to each reaction stage into the second formula. The second formula is:

[0073] Wherein, represents the comprehensive inhibition rate corresponding to the oxidation self-heating stage, represents the comprehensive inhibition rate corresponding to the deep oxidation stage. represents the temperature at the start of the coal spontaneous combustion inhibition performance determination experiment. represents the temperature when the sensor detects the target characteristic gas. represents the temperature at the end of the coal spontaneous combustion inhibition performance determination experiment. represents the target inhibition rate.

[0074] In this embodiment, and All are obtained by weighting calculation of the corresponding inhibition rate IE, the inhibition effect of the inhibitor on CO / CO2 I1 and the inhibition effect of the inhibitor on O2 I2 corresponding to the respective reaction stage.

[0075] In the present embodiment, it is specifically explained that: Equal to the initial inhibition rate IE corresponding to the oxidation self-heating stage, the first inhibition effect (the inhibition effect of the inhibitor on CO / CO2) I1 corresponding to the oxidation self-heating stage and the second inhibition effect (the inhibition effect of the inhibitor on O2) I2 corresponding to the oxidation self-heating stage are weighted and calculated to determine, wherein the weight can be determined based on experience or based on the way of entropy weight method. Equal to the initial inhibition rate IE corresponding to the deep oxidation stage, the first inhibition effect (the inhibition effect of the inhibitor on CO / CO2) I1 corresponding to the deep oxidation stage and the second inhibition effect (the inhibition effect of the inhibitor on O2) I2 corresponding to the deep oxidation stage are weighted and calculated to determine, wherein the weight can be determined based on experience or based on the way of entropy weight method.

[0076] In the present embodiment, considering that the coal spontaneous combustion process is closely related to temperature, the change of temperature represents the alternation of different stages of the spontaneous combustion process, and the experiment is at a constant rate (according to the relevant standard 1 ℃ / min), the temperature interval ratio = time ratio. At the same time, the inhibition effect of the fire prevention and extinguishing material depends on the temperature change history of the coal seam, and this formula directly relates the laboratory test and the field performance, that is, the temperature interval weight quantifies the actual action time of the inhibitor. Therefore, the present application sets the weight by temperature.

[0077] In one embodiment of the present disclosure, the above idea can be used for comprehensive evaluation of the three indicators of the inhibitor. Based on a large number of experiments and model calculations, the accurate fire prevention and extinguishing ability of a certain inhibitor can be obtained. By giving weights to each indicator, a comprehensive evaluation index of the coal spontaneous combustion inhibitor is established, then the weak link of a single inhibitor is analyzed, and through comparison with other inhibitors, the composition is compounded to guide the composition of the composite inhibitor.

[0078] If the comprehensive inhibition rate of a single inhibitor is not high, the result can be used to inversely search which sub-indicator value is low or weak (the test standard can be evaluated and determined in combination with the weight ratio and specific application scenario; moreover, the sub-indicators are no longer limited to IE, I1 and I2, and economy, environmental protection and the like can be introduced). Through comparison of the strong points or weak points of other inhibitors, a plurality of combination compositions are carried out, such as Figure 2 .

[0079] 1) Complementary principle Another inhibitor (such as B) is selected, and the strong point of the other inhibitor needs to cover the weak point of A, and through the composition of A (A is good) + B (B is good), the complementary advantages are realized.

[0080] 2) Optimization of the mixing ratio Adjust the mixing ratio according to the target weight, and determine the optimal ratio through iterative calculation.

[0081] 3) Verification and adjustment Verify the effect of the compound with experimental data. If a certain index is still insufficient, introduce a third inhibitor (such as propyl) to further optimize.

[0082] That is, through the comprehensive inhibition rate calculation involving multiple indexes, the fire extinguishing effect of the inhibitor can be comprehensively and objectively represented. Assuming that the value of the comprehensive inhibition rate IT of a certain inhibitor is not ideal, the comprehensive inhibition rate can be inversely inferred to each index involved in the calculation, and by comparing with certain standards or other inhibitors, it can be found out that the value of the inhibitor is low in which index (X in the figure). Thus, the focus ( ) and weak points (X) of the fire-retardant effect of the inhibitor can be determined.

[0083] After such calculation and operation, the specific inhibition of different inhibitors can be obtained, and by comparison, two or more inhibitors can be selected to form a composite inhibitor, which is complementary in advantages and disadvantages, strives to perform excellently in each index, and forms a new type of inhibitor with better fire-retardant effect.

[0084] The present application studies the precision and standardization method of fire extinguishing material performance test analysis and instrument, which can optimize or "tailor" suitable fire extinguishing materials for different coal types, and can also screen coal types that can play the fire extinguishing performance of specific fire extinguishing materials, so that the fire extinguishing material performance evaluation test analysis method and instrument meet the unified evaluation specification, and provide technical support for the precision, standardization and standardization of fire extinguishing performance evaluation method and equipment.

[0085] Coal type information, inhibitor information and experimental data are recorded in the computer (59): The coal type information includes coal type name, oxidation characteristic parameters and other key indexes; the inhibitor information includes inhibitor name, physical and chemical parameters (traditional inhibition rate, comprehensive inhibition rate, weight distribution of different stages of inhibition effect on specific coal type, pH value, viscosity, film forming property, corrosion property) and the like, which affect the adsorption and inhibition effect on the coal surface; the experimental data include the correlation between coal type and inhibitor: record the corresponding relationship between coal type and inhibitor, the inhibition effect indexes include inhibition rate, inhibition life and the like, and the experimental environment conditions (temperature, humidity, oxygen concentration and the like) are recorded at the same time, which are used for subsequent analysis of environmental adaptability.

[0086] In one embodiment of the present disclosure, as Figure 3As shown, the air supply system can include: a first dry air bottle 1, a second dry air bottle 2, a third dry air bottle 3, a first pressure reducing valve 4, a second pressure reducing valve 5, a third pressure reducing valve 6, a first pressure stabilizing valve 7, a second pressure stabilizing valve 8, a third pressure stabilizing valve 9, a first flow stabilizing valve 10, a second flow stabilizing valve 11, a third flow stabilizing valve 12, a first pressure gauge 13, a second pressure gauge 14, a third pressure gauge 15, a first air resistance 16, a second air resistance 17, a third air resistance 18, a first flow sensor 19, a second flow sensor 20, a third flow sensor 21, a pressure regulating valve 22, a premixing tank 23, a first oxygen sensor 24, a second oxygen sensor 25, a fourth pressure stabilizing valve 26, a fifth pressure stabilizing valve 27, a first joint 28, a second joint 29, a first switch 30, and a second switch 31; The first dry air bottle 1, the second dry air bottle 2 and the third dry air bottle 3 are used to store and supply dry air to provide a stable gas source for experiments and ensure that the gas purity meets the test requirements. The first pressure reducing valve 4, the second pressure reducing valve 5 and the third pressure reducing valve 6 are used to adjust the gas pressure output by the dry air bottle to reduce it to the low pressure range required by the experiment, preventing high pressure gas from damaging subsequent components. The first pressure stabilizing valve 7, the second pressure stabilizing valve 8 and the third pressure stabilizing valve 9 are used to stabilize the gas pressure, eliminate the influence of gas source pressure fluctuations on the experiment and ensure that the gas supply system pressure is constant. The first flow stabilizing valve 10, the second flow stabilizing valve 11 and the third flow stabilizing valve 12 are used to control the gas flow to maintain stable gas flow during the experiment and avoid flow fluctuations interfering with test results. The first pressure gauge 13, the second pressure gauge 14 and the third pressure gauge 15 are used to display the pressure value of the gas delivery pipeline in real time, facilitating the operator to monitor and adjust the gas supply system parameters. The first gas resistance 16, the second gas resistance 17 and the third gas resistance 18 are used to further stabilize the gas flow by limiting the cross-sectional area of the gas flow path, improving the flow control accuracy. The first flow sensor 19, the second flow sensor 20 and the third flow sensor 21 are used to accurately measure the gas flow and transmit data to the host control system to ensure that the flow meets the preset requirements during the experiment. The pressure regulating valve 22 is used to dynamically adjust the gas pressure to meet different coal sample test requirements. The premix tank 23 is used to mix different gases thoroughly to simulate the complex gas environment in the mine and support multi-component gas experiments. At the same time, the main gas path is divided into two branch streams to supply the control group and the experimental group reaction tubes respectively, ensuring that the two gas distribution is balanced. The first oxygen sensor 24 and the second oxygen sensor 25 are used to monitor the oxygen concentration entering the gas supply system in real time. The fourth pressure stabilizing valve 26 and the fifth pressure stabilizing valve 27 are used to stabilize the pressure of the two branch streams to ensure that the pressure of the two streams is consistent and to avoid data deviation between the experimental group and the control group due to pressure differences. The first connector 28 and the second connector 29 are used to quickly connect or separate the gas supply system and the programmed temperature control system to improve the convenience of experimental operation while ensuring the gas path sealing. The first switch 30 and the second switch 31 are used to control the on-off state of the gas path, supporting manual or remote electromagnetic control to ensure safe start and stop of the experiment.

[0087] The programmed temperature control system includes a heat insulation layer 32, a high temperature test box 33, a thermocouple 34, a control temperature module 35 and a temperature sensor 36.

[0088] The heat insulation layer 32 is used to wrap the high-temperature test box, reduce heat loss, ensure operation safety and reduce energy consumption. The high-temperature test box 33 is used to provide a program-controlled temperature environment, the temperature rising rate is adjustable, and the dynamic temperature rising process of coal spontaneous combustion is simulated. The thermocouple 34 is fixed on the heat insulation layer, which monitors the internal environment temperature of the high-temperature test box in real time, and transmits the signal to the control temperature rising module. The control temperature rising module 35 is used to receive the feedback signal of the thermocouple and the temperature sensor, execute the dynamic temperature control algorithm, automatically adjust the temperature rising rate according to the oxidation rate of the coal sample, and ensure the accuracy of the program temperature rising. The temperature sensor 36 is used to collect the reaction temperature of the coal sample (from the thermocouple) in real time, and provides key input for the dynamic temperature control algorithm.

[0089] The inhibition device system comprises a first gas preheating copper pipe 37, a second gas preheating copper pipe 38, a raw coal reaction pipe 39, a target coal sample reaction pipe 40, a third joint 41, a fourth joint 42, a fifth joint 43, a sixth joint 44, a first temperature transmitter 45, a second temperature transmitter 46, a seventh joint 47, an eighth joint 48, a third switch 49 and a fourth switch 50.

[0090] The first gas preheating copper pipe 37 and the second gas preheating copper pipe 38 are used to preheat the gas to a set temperature by built-in electric heating wires, so as to avoid the influence of low-temperature gas on the oxidation reaction process of the coal sample. The raw coal reaction pipe 39 is used to load the coal sample without inhibition treatment, simulate the spontaneous combustion process of the coal under natural conditions, and serve as a control group for comparative analysis of the inhibition effect. The target coal sample reaction pipe 40 is used to load the coal sample treated by the inhibition agent, test the inhibition effect of the inhibition material on the coal spontaneous combustion, and provide key data as an experimental group. The third joint 41, the fourth joint 42, the fifth joint 43 and the sixth joint 44 are used to connect the reaction pipe with the preheating copper pipe / monitoring system, while ensuring the sealing of the gas path. The first temperature transmitter 45 and the second temperature transmitter 46 are used to monitor the temperature change in the reaction pipe in real time, and convert the temperature signal into an electric signal to be transmitted to the processor. The seventh joint 47 and the eighth joint 48 are used to realize the quick connection or separation of the inhibition device system and the monitoring system, improve the convenience of experimental operation, and ensure the sealing of the gas path. The third switch 49 and the fourth switch 50 are used to control the on-off state of the gas path, support manual or remote electromagnetic control, and ensure the safe start and stop of the experiment.

[0091] The data acquisition and analysis system comprises a first oxygen sensor 51, a second oxygen sensor 52, a first air pump 53, a second air pump 54, a first three-way electromagnetic valve 55, a second three-way electromagnetic valve 56, a third three-way electromagnetic valve 57, a fourth three-way electromagnetic valve 58, a fifth three-way electromagnetic valve 59, a sixth three-way electromagnetic valve 60, a first gas exhaust pipeline 61, a second gas exhaust pipeline 62, a third gas exhaust pipeline 63, a fourth gas exhaust pipeline 64, a fifth gas exhaust pipeline 65, a sixth gas exhaust pipeline 66, a first detachable sensor 67, a second detachable sensor 68, a third detachable sensor 69, a fourth detachable sensor 70, a fifth detachable sensor 71, a sixth detachable sensor 72, a data collector 73, and an electronic device 74.

[0092] The first oxygen sensor 51 and the second oxygen sensor 52 are used to monitor the oxygen concentration in the gas discharged by the retarding device system in real time, the first air pump 53 and the second air pump 54 are used to keep the pressure of the entire high-temperature test box less than atmospheric pressure or keep the atmospheric pressure. The first three-way electromagnetic valve 55, the second three-way electromagnetic valve 56, the third three-way electromagnetic valve 57, the fourth three-way electromagnetic valve 58, the fifth three-way electromagnetic valve 59, and the sixth three-way electromagnetic valve 60 are used to switch the gas flow direction, control the reaction gas to enter the detachable sensor for analysis or be discharged through the exhaust pipeline, and realize the dynamic management of the experimental gas path. The first gas exhaust pipeline 61, the second gas exhaust pipeline 62, the third gas exhaust pipeline 63, the fourth gas exhaust pipeline 64, the fifth gas exhaust pipeline 65, and the sixth gas exhaust pipeline 66 are used to safely discharge the experimental waste gas from the system, and the tail end can be connected to an activated carbon filter device to adsorb harmful components (such as CO and SO2), ensuring that the discharge meets environmental protection standards. The first detachable sensor 67, the second detachable sensor 68, the third detachable sensor 69, the fourth detachable sensor 70, the fifth detachable sensor 71, and the sixth detachable sensor 72 (which can be a sensor for detecting target characteristic gas) can be used to detect the volume of various gases, or in the present embodiment, the execution device can be the first detachable sensor 67, the second detachable sensor 68, the third detachable sensor 69, the fourth detachable sensor 70, the fifth detachable sensor 71, or the sixth detachable sensor 72, or other electronic devices such as computers. Each branch can be connected to three sensors in parallel at most, and can be replaced with the following instruments according to specific needs: 1. CO sensor; 2. SO2 sensor; 3. Fourier infrared spectrometer; 4. Gas chromatograph. Real-time analysis of reaction gas composition and concentration provides high-precision data for calculating retarding rate and retarding life.

[0093] Among them, the different instruments and the selection of parallel connection each correspond to the respective scene: CO sensor: calculation of traditional inhibition rate. SO2 sensor: quantitative analysis of the inhibition effect of the inhibitor on high-sulfur coal Fourier infrared spectrometer: quantitative analysis of the inhibition effect of the inhibitor on high-sulfur coal; inhibition effect of the inhibitor on CO / CO2. CO sensor, Fourier infrared spectrometer and gas chromatograph: calculation of comprehensive inhibition rate.

[0094] The CO quantitative detection module is used for the Fourier infrared spectrometer, monitors the carbon dioxide concentration (range 0~1500ppm), and evaluates the inhibition ability of the material to carbon oxides. The CO2 quantitative detection module is used for the Fourier infrared spectrometer, monitors the carbon dioxide concentration (range 0%~5%), and evaluates the inhibition ability of the material to carbon oxides. The SO2 quantitative detection module is used for the Fourier infrared spectrometer, detects the sulfur dioxide concentration (range 0~1000ppm), and analyzes the inhibition effect of the material to sulfur oxides. The data collector 73 can receive data from the temperature transmitter, flow sensor and detachable sensor, and transmit the data to the electronic device 74. The electronic device 74 can run a dynamic temperature control algorithm, automatically calculate the inhibition performance index (inhibition rate, inhibition life), coordinate the cooperative work of each system; store experimental data, run test software to generate visual reports (including temperature-gas concentration curve, inhibition performance score), support remote monitoring, data export and historical record analysis, and can also be used as the execution subject of the method of the application.

[0095] In this embodiment, those skilled in the art can perform specific experiments based on the above components, for example: 1. System preparation and gas circuit connection Connect the gas source: the first dry air cylinder 1, the second dry air cylinder 2 and the third dry air cylinder 3 are respectively adjusted to the required range of the experiment by the first pressure reducing valve 4, the second pressure reducing valve 5 and the third pressure reducing valve 6, and are connected to the first pressure stabilizing valve 7, the second pressure stabilizing valve 8 and the third pressure stabilizing valve and the first flow stabilizing valve 10, the second flow stabilizing valve 11 and the third flow stabilizing valve 12 in turn, to ensure that the gas pressure is stable, and the flow is monitored by the first flow sensor 19, the second flow sensor 20 and the third flow sensor 21 (flow range 1~1000 mL / min). Adjust the pressure through the pressure regulating valve 22, open the premixing tank 23 to divide the main gas circuit into two branches, connect the fourth pressure stabilizing valve 26 and the fifth pressure stabilizing valve 27 respectively, and connect the program-controlled temperature rising system through the first joint 28 and the second joint 29. Open the first switch 30 and the second switch 31, and confirm that there is no leakage in the gas circuit.

[0096] Loading coal samples: raw coal reaction tube 39 is loaded with raw coal samples (control group); target coal sample reaction tube 40 is loaded with resistance-treated coal samples (experimental group); connecting preheating copper pipes and temperature transmitters: connecting the first gas preheating copper pipe 37 and the second gas preheating copper pipe 38 to the reaction tube inlet, and fixing the first temperature transmitter 45 and the second temperature transmitter 46 on the outer wall of the reaction tube to monitor the temperature.

[0097] Temperature rising system and monitoring configuration: set dynamic temperature rising program (support air bath / water bath / oil bath) in the program-controlled high-temperature test box 33, and adjust the temperature rising rate in real time through the control temperature rising module 35.

[0098] Monitoring system selection: by default, the first detachable sensor 67, the second detachable sensor 68, the third detachable sensor 69, the fourth detachable sensor 70, the fifth detachable sensor 71 and the sixth detachable sensor 72 are installed, and the SO2 sensor or the Fourier infrared spectrometer (multi-channel detection CO / CO2 / SO2) is replaced for high-sulfur coal experiments. The first three-way electromagnetic valve 55, the second three-way electromagnetic valve 56, the third three-way electromagnetic valve 57, the fourth three-way electromagnetic valve 58, the fifth three-way electromagnetic valve 59 and the sixth three-way electromagnetic valve 60 are initially cut to the first gas exhaust pipeline 61, the second gas exhaust pipeline 62, the third gas exhaust pipeline 63, the fourth gas exhaust pipeline 64, the fifth gas exhaust pipeline 65 and the sixth gas exhaust pipeline 66, and are cut to the monitoring pipeline after the system is stabilized.

[0099] 2. Experimental operation and data collection Starting the temperature rising program: the high-temperature test box 33 rises in temperature according to the preset program, and the thermocouple 34 feeds back the temperature in the box to the control temperature rising module 35 in real time.

[0100] Gas reaction monitoring: the gas enters the raw coal reaction tube 39 and the target coal sample reaction tube 40 through the first gas preheating copper pipe 37 and the second gas preheating copper pipe 38, and the oxidation reaction gas is transported to the monitoring system through the seventh joint 47 and the eighth joint 48.

[0101] Data synchronous collection: the first temperature transmitter 45 and the second temperature transmitter 46 collect sample temperature, the first detachable sensor 67, the second detachable sensor 68, the third detachable sensor 69, the fourth detachable sensor 70, the fifth detachable sensor 71 and the sixth detachable sensor 72 monitor gas concentration (CO / O2 / SO2, etc.) data every second, and the data collector 73 integrates all signals and transmits them to the electronic device 74.

[0102] In the embodiment, the specific connection relationship can be: the gas supply system is composed of the first dry air bottle 1, the second dry air bottle 2 and the third dry air bottle 3 storing O2, N2 and CH4 respectively, the bottle mouth is provided with the first pressure reducing valve 4, the second pressure reducing valve 5 and the third pressure reducing valve 6, the gas conveying pipeline is sequentially provided with the first pressure stabilizing valve 7, the second pressure stabilizing valve 8 and the third pressure stabilizing valve 9, the first current stabilizing valve 10, the second current stabilizing valve 11 and the third current stabilizing valve 12, the first pressure gauge 13, the second pressure gauge 14 and the third pressure gauge 15, the first gas resistance 16, the second gas resistance 17 and the third gas resistance 18, the first flow sensor 19, the second flow sensor 20 and the third flow sensor 21; three branches converge at one place and flow through the pressure regulating valve 22, and then pass through the premixing tank 23 to divide the main gas path into two branches, each branch is respectively provided with the first oxygen sensor 24 and the second oxygen sensor 25, the fourth pressure stabilizing valve 26 and the fifth pressure stabilizing valve 27, and is connected with the program-controlled temperature rising system through the first joint 28 and the second joint 29, and the joint is provided with the first switch 30 and the second switch 31; The program-controlled temperature rising system is composed of an experimental reaction system and a control system: in the experimental reaction system, the heat insulation layer 32 covers the high-temperature test box 33, and supports air bath, water bath and oil bath; the thermocouple 34 is fixed on the heat insulation layer, is connected with the control temperature rising module 35 in the control system, and the other end of the control temperature rising module is connected with the temperature sensor 36.

[0103] The inhibition device system is composed of two sets of test subsystems with the same configuration: two sets of gas preheating copper pipes: the first gas preheating copper pipe 37 and the second gas preheating copper pipe 38, the first gas preheating copper pipe 37 and the second gas preheating copper pipe 38 are connected with the raw coal reaction pipe 39 and the target coal sample reaction pipe 40 respectively, the two groups of reaction pipes are connected with the third joint 41, the fourth joint 42, the fifth joint 43 and the sixth joint 44 at the upper and lower ends, and the first temperature transmitter 45 and the second temperature transmitter 46 are fixed on the outer walls of the reaction pipes respectively. The raw coal reaction pipe 39 and the target coal sample reaction pipe 40 are connected with the program-controlled temperature rising system through the seventh joint 47 and the eighth joint 48 in the gas outlet direction, and the joints are provided with the third switch 49 and the fourth switch 50.

[0104] The monitoring system is composed of two sets of monitoring subsystems with the same configuration: both sets of subsystems have oxygen sensors, namely a first oxygen sensor 51 and a second oxygen sensor 52, and are connected to a first gas pump 53 and a second gas pump 54; each branch is connected in parallel to three sets of monitoring subsystems, each of which is composed of: a first three-way electromagnetic valve 55, a second three-way electromagnetic valve 56, a third three-way electromagnetic valve 57, a fourth three-way electromagnetic valve 58, a fifth three-way electromagnetic valve 59, and a sixth three-way electromagnetic valve 60; and is connected to a first gas exhaust pipeline 61, a second gas exhaust pipeline 62, a third gas exhaust pipeline 63, a fourth gas exhaust pipeline 64, a fifth gas exhaust pipeline 65, and a sixth gas exhaust pipeline 66; and has a respective first detachable sensor 67, a second detachable sensor 68, a third detachable sensor 69, a fourth detachable sensor 70, a fifth detachable sensor 71, and a sixth detachable sensor 72; the detachable sensors can be replaced with CO sensors, SO2 sensors, H2S sensors, Fourier infrared spectrometers, and gas chromatographs.

[0105] The data acquisition and analysis system has a data collector 73 connected to two temperature transmitters in the inhibition device system and two detachable sensors in the monitoring system, and finally transmits the collected data to an electronic device 74.

[0106] The gas flow range of the gas supply system is 1-1000 mL / min, and the joint is designed with a leak-proof seal. The raw coal reaction tube 39 and the target coal sample reaction tube 40 contain test samples and can be connected to temperature transmitters to collect sample temperatures in real time. The raw coal reaction tube 39 and the target coal sample reaction tube 40 are designed for a control experiment, which can directly calculate the inhibition rate in one experiment, reducing the number of experiments and improving the efficiency of the experiment. The infrared spectrometer in the first detachable sensor 67, the second detachable sensor 68, the third detachable sensor 69, the fourth detachable sensor 70, the fifth detachable sensor 71, and the sixth detachable sensor 72 is equipped with CO, CO2, and SO2 multi-channel detection modules, with detection sensitivities of 0.1 ppm, 0.01%, and 0.1 ppm, respectively, and a data acquisition frequency of not less than 10 times per second. The electronic device can be a computer that stores a dynamic temperature control algorithm and can automatically adjust the heating rate according to the oxidation rate of the coal sample, and can realize remote data monitoring and equipment state diagnosis through a wireless communication module. The display panel of the inhibition device system integrates a touch operation interface, which can display the reaction tube temperature, gas flow, and pressure data in real time, and the control panel has a preset experiment program that supports one-key start of the standardized test process. The gas supply system and the inhibition device system are designed in a modular manner, and can be adapted to various coal sample sizes and experimental conditions by replacing different specifications of reaction tubes and preheating copper tubes. The overall fire extinguishing material coal spontaneous combustion inhibition performance determination system is integrated in an explosion-proof experiment cabinet, which is equipped with a fire extinguishing device to meet the safety experiment requirements.

[0107] In the present embodiment, the inhibition life can be calculated based on conventional methods in the art, or by the following method: x = 1, 2, 3, n = 1, 2, 3, In the formula: ID represents the inhibition life, in minutes (min); ID Xm represents the inhibition life under the condition of an inhibition rate of 40%, in minutes (min); T 2m-1 represents the starting time of an inhibition rate of 40% in the mth experiment, in minutes (min). T 2m represents the ending time of an inhibition rate of 40% in the mth experiment, in minutes (min). The parallel error of the same sample is within ±3%.

[0108] In the present embodiment, the inhibition life can also be one of the calculation dimensions of the comprehensive inhibition rate, that is, the inhibition life can be added in the process of weighted calculation, and the corresponding weight can be determined based on the same entropy weight method, or can be based on experience or simple average distribution.

[0109] A method for determining the coal spontaneous combustion inhibition performance of a fireproof and fire extinguishing material corresponding to the above embodiment, Figure 4 is a structural block diagram of a device for determining the coal spontaneous combustion inhibition performance of a fireproof and fire extinguishing material according to an embodiment of the present application. For ease of illustration, only parts related to the embodiments of the present application are shown. For parts not shown, reference can be made to the parts shown in the drawings. Figure 4 The device 200 for determining the coal spontaneous combustion inhibition performance of a fireproof and fire extinguishing material is arranged in a data acquisition and analysis system, and specifically arranged in an electronic device in the data acquisition and analysis system. The data acquisition and analysis system is included in a system for determining the coal spontaneous combustion inhibition performance of a fireproof and fire extinguishing material, and the performance determination system further includes a gas supply system, a program-controlled temperature rising system, an inhibition device system, and a monitoring system. The program-controlled temperature rising system is connected with the gas supply system and the inhibition device system respectively. The monitoring system is connected with the inhibition device system and the data acquisition and analysis system respectively. The data acquisition and analysis system is further connected with the inhibition device system. The device 200 for determining the coal spontaneous combustion inhibition performance of a fireproof and fire extinguishing material includes a data acquisition module 210 and an inhibition rate determination module 220.

[0110] The data acquisition module 210 is configured to acquire a plurality of experimental parameters, wherein the plurality of experimental parameters comprise gas volume parameters corresponding to different reaction stages in a coal spontaneous combustion inhibition performance determination experiment; the coal spontaneous combustion inhibition performance determination experiment is configured to determine the inhibition performance of a target fire-preventing and fire-extinguishing material on coal spontaneous combustion by performing an experiment on a target coal sample; the target coal sample is obtained by processing an original coal sample with the target fire-preventing and fire-extinguishing material. The inhibition rate determination module 220 is configured to determine, for each reaction stage, a comprehensive inhibition rate corresponding to the reaction stage based on the gas volume parameters corresponding to the reaction stage. The target inhibition rate is determined based on the comprehensive inhibition rates corresponding to the reaction stages, and the target inhibition rate is used to represent the inhibition performance of the target fire-preventing and fire-extinguishing material on coal spontaneous combustion.

[0111] In an embodiment of the present application, the inhibition rate determination module 220 is specifically configured to determine an initial inhibition rate, a first inhibition effect and a second inhibition effect based on the gas volume parameters corresponding to the reaction stage, wherein the first inhibition effect is the inhibition effect of the target fire-preventing and fire-extinguishing material on CO / CO2, and the second inhibition effect is the inhibition effect of the target fire-preventing and fire-extinguishing material on O2. The initial inhibition rate, the first inhibition effect and the second inhibition effect are weighted and calculated to determine the comprehensive inhibition rate corresponding to the reaction stage.

[0112] In an embodiment of the present application, the fire-preventing and fire-extinguishing material coal spontaneous combustion inhibition performance determination device 200 further comprises a calculation formula determination module configured to determine a calculation formula of the initial inhibition rate based on the sulfur content of the target coal sample to obtain a first formula. The inhibition rate determination module 220 is specifically configured to determine the initial inhibition rate based on the first formula and the gas volume parameters corresponding to the reaction stage.

[0113] In an embodiment of the present application, the calculation formula determination module is specifically configured to, in response to the sulfur content of the target coal sample being less than a preset sulfur content threshold, determine the first formula as:

[0114] wherein, IE represents the initial inhibition rate; V t represents the CO volume generated by the target coal sample in the reaction stage; V u represents the CO volume generated by the original coal sample in the reaction stage; C n represents the CO volume of the nth test point in the target coal sample in the reaction stage; C n-1 ​​CO volume of the (n-1)th test point in the target coal sample in the reaction stage; CO volume of the nth test point in the raw coal sample in the reaction stage; CO volume of the (n-1)th test point in the raw coal sample in the reaction stage; i Maximum measurement number.

[0115] In an embodiment of the present application, the calculation formula determination module is specifically configured to, in response to the sulfur content of the target coal sample being greater than or equal to a preset sulfur content threshold, determine the first formula as: ， ，

[0116] wherein, IE Initial inhibition rate; V ts SO2 volume generated by the target coal sample in the reaction stage; V us SO2 volume generated by the raw coal sample in the reaction stage; S n SO2 volume of the nth test point in the target coal sample in the reaction stage; SO2 volume of the (n-1)th test point in the target coal sample in the reaction stage; SO2 volume of the nth test point in the raw coal sample in the reaction stage, SO2 volume of the (n-1)th test point in the raw coal sample in the reaction stage; i Maximum measurement number.

[0117] In an embodiment of the present application, the reaction stage includes an oxidation self-heating stage and a deep oxidation stage. The plurality of experimental parameters further include a temperature at the beginning of the coal spontaneous combustion inhibition performance determination experiment, a temperature at which the sensor detects the target characteristic gas, and a temperature at the end of the coal spontaneous combustion inhibition performance determination experiment. The inhibition rate determination module 220 is specifically further configured to substitute the comprehensive inhibition rate corresponding to each reaction stage into a second formula to determine the target inhibition rate. The second formula is:

[0118] wherein, Comprehensive inhibition rate corresponding to the oxidation self-heating stage, Comprehensive inhibition rate corresponding to the deep oxidation stage; Temperature at the beginning of the coal spontaneous combustion inhibition performance determination experiment; Indicates the temperature when the sensor detects the target characteristic gas; It represents the temperature at the end of the test of coal spontaneous combustion suppression performance; Indicates the target resistance.

[0119] In one embodiment of the present application, the weighted calculation weights of the initial resistance rate, the first resistance effect, and the second resistance effect are determined based on an entropy weight method.

[0120] See also Figure 5 , Figure 5 This is a schematic block diagram of an electronic device provided in one embodiment of the present application. Figure 5 The electronic device 300 in the embodiment shown may include: one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memory 304 is used to store computer programs, which include program instructions. The processor 301 is used to execute the program instructions stored in the memory 304. The processor 301 is configured to call the program instructions to execute the functions of the modules / units in the above-mentioned device embodiments, such as Figure 4 The functions of the data acquisition module 210 and the resistance determination module 220 are shown.

[0121] It should be understood that in the embodiment of the present application, the processor 301 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0122] The input device 302 may include a touchpad, a fingerprint collection sensor (for collecting user fingerprint information and fingerprint direction information), a microphone, etc. The output device 303 may include a display (LCD, etc.), a speaker, etc.

[0123] The memory 304 can include read-only memory and random access memory, and provide instructions and data to the processor 301. A portion of the memory 304 can also include non-volatile random access memory. For example, the memory 304 can also store device type information.

[0124] In specific implementations, the processor 301, the input device 302, and the output device 303 described in the embodiments of the present application can perform the implementation manners described in the method for determining the inhibition performance of fire extinguishing materials on coal spontaneous combustion, and can also perform the implementation manners of the electronic device described in the embodiments of the present application, which will not be described here.

[0125] In another embodiment of the present application, a computer readable storage medium is provided, which stores a computer program. The computer program includes program instructions, which are executed by a processor to implement all or part of the processes of the above-mentioned embodiment methods. The computer program can also be used to instruct related hardware to complete the implementation. The computer program can be stored in a computer readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0126] The computer readable storage medium can be an internal storage unit of the electronic device of any of the above-mentioned embodiments, such as a hard disk or a memory of the electronic device. The computer readable storage medium can also be an external storage device of the electronic device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the computer readable storage medium can include both the internal storage unit and the external storage device of the electronic device. The computer readable storage medium is used to store the computer program and other programs and data required by the electronic device. The computer readable storage medium can also be used to temporarily store data that has been output or will be output.

[0127] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the electronic device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

[0128] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the electronic device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

[0129] In several embodiments provided in the present application, it should be understood that the disclosed electronic device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the modules / units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules, units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed each other can be indirect coupling or communication connection through some interfaces or modules / units, and can also be electrical, mechanical or other form of connection.

[0130] The modules / units described as separate components can or can not be physically separated, and the components shown as modules / units can or can not be physical modules / units, that is, can be located in one place, or can be distributed on a plurality of network modules / units. Part or all of the modules / units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0131] In addition, each functional module / unit in each embodiment of the present application can be integrated in one processing module / unit, or each module / unit can exist physically, or two or more modules / units can be integrated in one module / unit. The integrated module / unit can be realized in the form of hardware or in the form of a software functional module / unit.

[0132] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for determining the performance of fire-proof and fire-extinguishing materials in inhibiting spontaneous combustion of coal, characterized in that: A system for measuring the performance of fire-proof and fire-extinguishing materials in inhibiting spontaneous combustion of coal includes: a gas supply system, a program-controlled temperature-raising system, a catalytic device system, a monitoring system, and a data acquisition and analysis system; the program-controlled temperature-raising system is connected to the gas supply system and the catalytic device system, respectively; the monitoring system is connected to the catalytic device system and the data acquisition and analysis system, respectively; the data acquisition and analysis system is also connected to the catalytic device system; the performance measurement method is executed by electronic equipment in the data acquisition and analysis system; The performance measurement method comprises: Acquiring multiple experimental parameters; the multiple experimental parameters include gas volume parameters corresponding to different reaction stages during the coal spontaneous combustion suppression performance measurement experiment; the coal spontaneous combustion suppression performance measurement experiment is used to test a target coal sample to determine the suppression performance of a target fire extinguishing material on coal spontaneous combustion; the target coal sample is a coal sample obtained after the raw coal sample is treated with the target fire extinguishing material; For each reaction stage, the comprehensive resistance rate corresponding to the reaction stage is determined based on the gas volume parameter corresponding to the reaction stage; The target resistance rate is determined based on the comprehensive resistance rates corresponding to each reaction stage; the target resistance rate is used to characterize the suppression performance of the target fire retardant and fire extinguishing material on coal spontaneous combustion.

2. The method for measuring the coal spontaneous combustion suppression performance of a fire retardant and fire extinguishing material according to claim 1, characterized in that: The determining of the comprehensive resistance rate corresponding to the reaction stage based on the gas volume parameter corresponding to the reaction stage includes: Determine the initial resistance rate, the first resistance effect, and the second resistance effect based on the gas volume parameter corresponding to the reaction stage; wherein the first resistance effect is the resistance effect of the target fire extinguishing material on CO / CO2; the second resistance effect is the resistance effect of the target fire extinguishing material on O2; The initial resistance rate, the first resistance effect and the second resistance effect are weightedly calculated to determine the comprehensive resistance rate corresponding to the reaction stage.

3. The method for measuring the coal spontaneous combustion suppression performance of a fire retardant and fire extinguishing material according to claim 2, characterized in that: Before determining the initial resistance rate based on the gas volume parameter corresponding to the reaction stage, the method further includes: determining a calculation formula for the initial resistance rate based on the sulfur content of the target coal sample to obtain a first formula; The determining of the initial inhibition rate based on the gas volume parameter corresponding to the reaction stage includes: The initial resistance rate is determined based on the first formula and the gas volume parameter corresponding to the reaction stage.

4. The method for measuring the coal spontaneous combustion suppression performance of a fire retardant and fire extinguishing material according to claim 3, wherein: The calculation formula for determining the initial retardation rate based on the sulfur content of the target coal sample includes: In response to the sulfur content of the target coal sample being less than the preset sulfur content threshold, the first formula is determined as: in, IE Indicates the initial resistance rate; V t It represents the volume of CO produced by the target coal sample at this reaction stage; V u It represents the volume of CO produced by the raw coal sample at this reaction stage; C n It represents the CO volume at the nth test point in the target coal sample at this reaction stage; C n-1 It represents the CO volume at the (n-1)th test point in the target coal sample at this reaction stage; It represents the volume of CO at the nth test point in the raw coal sample at this reaction stage; It represents the volume of CO at the (n-1)th test point in the raw coal sample at this reaction stage; i Indicates the maximum number of measurements.

5. The method for measuring the coal spontaneous combustion suppression performance of a fire retardant and fire extinguishing material according to claim 3, characterized in that: The calculation formula for determining the initial retardation rate based on the sulfur content of the target coal sample includes: In response to the sulfur content of the target coal sample being greater than or equal to a preset sulfur content threshold, the first formula is determined as: in, IE Indicates the initial resistance rate; V ts It represents the volume of SO2 produced by the target coal sample at this reaction stage; V us It represents the volume of SO2 produced by the raw coal sample at this reaction stage; S n It represents the SO2 volume at the nth test point in the target coal sample at this reaction stage; It represents the SO2 volume at the (n-1)th test point in the target coal sample at this reaction stage; It represents the SO2 volume at the nth test point in the raw coal sample at this reaction stage. It represents the SO2 volume at the (n-1)th test point in the raw coal sample at this reaction stage; i Indicates the maximum number of measurements.

6. The method for measuring the coal spontaneous combustion suppression performance of a fire retardant and fire extinguishing material according to claim 1, wherein: The reaction stages include: an oxidation autothermal stage and a deep oxidation stage; The multiple experimental parameters also include: the temperature at the beginning of the coal spontaneous combustion suppression performance measurement experiment, the temperature when the sensor detects the target characteristic gas, and the temperature at the end of the coal spontaneous combustion suppression performance measurement experiment; The target inhibition rate is determined based on the comprehensive inhibition rates corresponding to each reaction stage, including: Substitute the comprehensive inhibition rate corresponding to each reaction stage into the second formula to determine the target inhibition rate; Wherein, the second formula is: in, It represents the comprehensive resistance rate corresponding to the oxidation self-heating stage, Indicates the comprehensive resistance rate corresponding to the deep oxidation stage; Indicates the temperature at the beginning of the coal spontaneous combustion suppression performance test; Indicates the temperature when the sensor detects the target characteristic gas; It represents the temperature at the end of the test of coal spontaneous combustion suppression performance; Indicates the target resistance.

7. The method for measuring the coal spontaneous combustion suppression performance of a fire retardant and fire extinguishing material according to claim 2, characterized in that: The weighted calculation weights of the initial resistance rate, the first resistance effect and the second resistance effect are determined based on the entropy weight method.

8. A device for measuring the performance of fire-proof and fire-extinguishing materials in suppressing spontaneous combustion of coal, characterized in that: Set in the data acquisition and analysis system; specifically set in the electronic equipment in the data acquisition and analysis system; the data acquisition and analysis system is included in the fire retardant and fire extinguishing material on the coal spontaneous combustion suppression performance measurement system, the performance measurement system also includes: an air supply system, a program-controlled temperature rise system, a retardant device system and a monitoring system; the program-controlled temperature rise system is respectively connected to the air supply system and the retardant device system; the monitoring system is respectively connected to the retardant device system and the data acquisition and analysis system; the data acquisition and analysis system is also connected to the retardant device system; The performance measuring device comprises: a data acquisition module for acquiring a plurality of experimental parameters; the plurality of experimental parameters including gas volume parameters corresponding to different reaction stages during a coal spontaneous combustion suppression performance measurement experiment; the coal spontaneous combustion suppression performance measurement experiment is used to test a target coal sample to determine the suppression performance of a target fire extinguishing material on coal spontaneous combustion; the target coal sample is a coal sample obtained after the raw coal sample has been treated with the target fire extinguishing material; A resistance determination module is used to determine the comprehensive resistance corresponding to each reaction stage based on the gas volume parameter corresponding to the reaction stage; The target resistance rate is determined based on the comprehensive resistance rates corresponding to each reaction stage; the target resistance rate is used to characterize the suppression performance of the target fire retardant and fire extinguishing material on coal spontaneous combustion.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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