Gas extraction evaluation method, device, equipment, storage medium and product

Abstract

The invention discloses a gas extraction evaluation method, device and equipment, a storage medium and a product. Determining each to-be-extracted evaluation area based on the mine gas geological map; for each to-be-extracted evaluation area, monitoring data of the current to-be-extracted evaluation area and pre-extraction time data of each drill hole are obtained; under the condition that the current to-be-extracted evaluation area meets the basic compliance condition and the pre-extraction time difference coefficient of the current to-be-extracted evaluation area meets the technical evaluation admission condition, based on the monitoring data and the gas geological reference parameters of the current to-be-extracted evaluation area, determining a residual gas evaluation index and a desorbable gas amount; the pre-pumping time difference coefficient is determined based on the pre-pumping time data of each drill hole; and determining an evaluation result of the current to-be-extracted evaluation area based on the residual gas evaluation index and the desorbable gas amount. The problems that in the prior art, gas extraction evaluation efficiency is low, accuracy is insufficient, and the process is not coherent are solved.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety technology, and in particular to an evaluation method, apparatus, equipment, storage medium, and product for gas extraction. Background Technology

[0002] Coal mine gas disasters are a significant factor restricting safe production in coal mines, and gas drainage is a key technical means to prevent gas disasters. In actual production, evaluating the effectiveness of gas drainage is an important step in optimizing mining deployment and ensuring safe production.

[0003] Currently, mine gas drainage assessment mainly relies on manual statistical analysis. However, this method suffers from problems such as data acquisition delays and poor adaptability of the assessment model to actual working conditions, resulting in low efficiency, insufficient accuracy, and inconsistent processes in gas drainage assessment. These problems seriously affect the rationality of mining deployment and mine safety. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, storage medium, and product for evaluating gas extraction, in order to solve the problems of low efficiency, insufficient accuracy, and inconsistent process in the existing gas extraction evaluation.

[0005] According to one aspect of the present invention, a method for evaluating gas extraction is provided, comprising:

[0006] Based on the mine gas geological map, each area to be evaluated for extraction was determined;

[0007] For each area to be evaluated by extraction, the monitoring data of the current area to be evaluated by extraction and the pre-extraction time data of each borehole are obtained. The pre-extraction time data includes the time from the start of extraction to the current evaluation time of the borehole.

[0008] If the current gas extraction evaluation area meets the basic compliance conditions and the pre-extraction time difference coefficient of the current gas extraction evaluation area meets the technical evaluation access conditions, the residual gas evaluation index and the amount of desorbable gas are determined based on the monitoring data and the gas geological benchmark parameters of the current gas extraction evaluation area. The pre-extraction time difference coefficient is determined based on the pre-extraction time data of each borehole.

[0009] Based on the residual gas evaluation index and the amount of desorbable gas, the evaluation result of the current evaluation area to be extracted is determined.

[0010] According to another aspect of the present invention, an evaluation device for gas extraction is provided, comprising:

[0011] The area determination module is used to determine each area to be evaluated for extraction based on the mine gas geological map;

[0012] The data acquisition module is used to acquire the monitoring data of the current area to be extracted and evaluated and the pre-extraction time data of each borehole for each area to be extracted and evaluated. The pre-extraction time data includes the time from the start of extraction to the current evaluation time of the borehole.

[0013] The parameter determination module is used to determine the residual gas evaluation index and the amount of desorbable gas based on the monitoring data and the gas geological benchmark parameters of the current evaluation area, provided that the current evaluation area meets the basic compliance conditions and the pre-drainage time difference coefficient of the current evaluation area meets the technical evaluation access conditions. The pre-drainage time difference coefficient is determined based on the pre-drainage time data of each borehole.

[0014] The result determination module is used to determine the evaluation result of the current evaluation area to be extracted based on the residual gas evaluation index and the amount of desorbable gas.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] At least one processor; and

[0017] A memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the gas extraction evaluation method according to any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the gas extraction evaluation method according to any embodiment of the present invention.

[0020] According to another aspect of the present invention, a computer program product is provided, the computer program product comprising a computer program that, when executed by a processor, implements the gas extraction evaluation method according to any embodiment of the present invention.

[0021] The technical solution of this invention, based on a mine gas geological map, determines each evaluation area to be drained; for each evaluation area, it acquires monitoring data of the current evaluation area and pre-drainage time data of each borehole, wherein the pre-drainage time data includes the time from the start of drainage to the current evaluation time; when the current evaluation area meets the basic compliance conditions and the pre-drainage time difference coefficient of the current evaluation area meets the technical evaluation access conditions, it determines the residual gas evaluation index and the amount of desorbable gas based on the monitoring data and the gas geological benchmark parameters of the current evaluation area, wherein the pre-drainage time difference coefficient is determined based on the pre-drainage time data of each borehole; and it determines the evaluation result of the current evaluation area based on the residual gas evaluation index and the amount of desorbable gas. By acquiring real-time monitoring data and pre-drainage time data for each borehole from the start of extraction to the current moment, the traditional manual statistical method is replaced, solving the problems of data lag and low efficiency. The introduction of a pre-drainage time difference coefficient quantifies the uniformity of extraction in each borehole. Combined with gas geological benchmark parameters and monitoring data, residual gas indicators and desorbable gas volume are calculated collaboratively, overcoming the shortcomings of traditional evaluation models that ignore spatiotemporal differences and have poor adaptability to complex working conditions, thus significantly improving the accuracy of evaluation. The entire process is closely connected to form a closed loop, effectively solving the problem of process disconnect in traditional methods, and achieving a comprehensive improvement in evaluation efficiency, accuracy, and process continuity.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 The flowchart of an evaluation method for gas extraction is provided in Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a gas extraction evaluation device provided in Embodiment 2 of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of an electronic device provided in Embodiment 3 of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Example 1

[0030] Figure 1 This is a flowchart illustrating a gas extraction evaluation method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations where gas extraction is being evaluated. The method can be executed by a gas extraction evaluation device, which can be implemented in hardware and / or software and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0031] S110. Based on the mine gas geological map, determine each evaluation area to be extracted.

[0032] In this embodiment, the mine gas geological map is a professional map integrating coal seam occurrence morphology, gas content distribution, geological structure, roadway layout, and historical drainage data. The area to be evaluated for drainage can be understood as a spatial unit that needs to undergo gas drainage compliance evaluation.

[0033] Specifically, based on the mine gas geological map, parameters such as coal seam occurrence, gas content, and geological structure are extracted from the map to delineate each evaluation area to be extracted.

[0034] For example, each evaluation area to be extracted can be manually drawn by technicians in the graphical interface; or it can be automatically generated by the system according to preset rules to ensure that the division of evaluation units conforms to geological laws and adapts to the actual mining deployment needs.

[0035] S120. For each area to be evaluated by extraction, obtain the monitoring data of the current area to be evaluated by extraction and the pre-extraction time data of each borehole, wherein the pre-extraction time data includes the time from the start of extraction to the current evaluation time of the borehole.

[0036] In this embodiment, the monitoring data mainly includes two categories: gas extraction parameters and equipment operating status information. Gas extraction parameters include, but are not limited to, dynamic data reflecting the extraction effect such as gas concentration, extraction flow rate, extraction negative pressure, pipeline temperature, and gas pressure. Equipment operating status information includes, but is not limited to, basic data ensuring stable system operation such as the operating conditions of the extraction pump station, sensor working status, valve opening, and power supply parameters. The extraction start time can be understood as the time when the borehole begins gas extraction operations. The pre-extraction time data for each borehole refers to the pre-extraction time data for each borehole in the current evaluation area. The pre-extraction time data includes the time span from the start of extraction to the current evaluation time.

[0037] Specifically, for each area to be evaluated for gas extraction, the mine safety monitoring system and gas extraction monitoring system are used to collect gas extraction parameters and equipment operating status information in real time to ensure the real-time and completeness of data acquisition. At the same time, for each borehole, the pre-extraction time data from the start of extraction to the current evaluation time is recorded.

[0038] S130. If the current evaluation area to be extracted meets the basic compliance conditions and the pre-extraction time difference coefficient of the current evaluation area to be extracted meets the technical evaluation access conditions, the residual gas evaluation index and the amount of desorbable gas are determined based on the monitoring data and the gas geological benchmark parameters of the current evaluation area to be extracted, wherein the pre-extraction time difference coefficient is determined based on the pre-extraction time data of each borehole.

[0039] In this embodiment, the basic compliance conditions can be understood as the legal or normative requirements that the current gas drainage evaluation area must meet before conducting a gas drainage evaluation. These conditions ensure the legality and safety of the drainage operation. Gas geological baseline parameters are basic parameters used to describe the gas geological characteristics of the current gas drainage evaluation area before drainage, and may include initial coal reserves, initial gas content, and gas reserves. Desorbable gas volume is the volume of gas that can be released per unit mass of coal body through natural desorption or engineering drainage under the current coal seam temperature, pressure, and drainage conditions. Residual gas evaluation indicators are the gas-related parameters remaining in the current gas drainage evaluation area after the drainage operation, such as residual gas content and residual relative gas pressure. These indicators are used to assess whether the drainage effect meets the standards and directly determine the drainage qualification of the evaluation area.

[0040] The pre-drainage time difference coefficient is a quantitative index calculated based on the pre-drainage time data of each borehole, used to evaluate the uniformity of drainage time across boreholes. Its calculation method is as follows:

[0041]

[0042] The maximum pre-sampling time is the longest time span from the start of sampling to the current evaluation time; the minimum pre-sampling time is the shortest time span from the start of sampling to the current evaluation time.

[0043] This coefficient reflects the degree of difference in extraction time among different boreholes. The smaller the difference coefficient, the more uniform the extraction time of each borehole, and the more representative the evaluation results are.

[0044] The technical evaluation admission criteria require that the pre-drainage time difference coefficient be less than or equal to a preset difference threshold. If this condition is met, subsequent evaluation can proceed; if not, it indicates that the difference in drainage time among boreholes is too large, and the drainage plan needs to be adjusted or the drainage time extended.

[0045] Specifically, firstly, it is verified whether the current area to be evaluated for extraction meets the basic compliance requirements to ensure the legality and safety of the extraction operation; secondly, it is checked whether the pre-extraction time difference coefficient meets the technical evaluation access standard, and only those coefficients within the preset threshold range are eligible for evaluation. When both conditions are met, the residual gas evaluation index and the amount of desorbable gas are calculated collaboratively based on monitoring data and gas geological benchmark parameters.

[0046] S140. Based on the residual gas evaluation index and the amount of desorbable gas, determine the evaluation result of the current evaluation area to be extracted.

[0047] Specifically, based on the residual gas evaluation indicators and the amount of desorbable gas, a final determination is made as to whether the current evaluation area to be extracted meets the standards. This evaluation result can include a binary judgment of "meets the standards" or "does not meet the standards".

[0048] The technical solution of Embodiment 1 of the present invention, based on a mine gas geological map, determines each evaluation area to be drained; for each evaluation area, it acquires monitoring data of the current evaluation area and pre-drainage time data of each borehole, wherein the pre-drainage time data includes the time from the start of drainage to the current evaluation time; when the current evaluation area meets the basic compliance conditions and the pre-drainage time difference coefficient of the current evaluation area meets the technical evaluation access conditions, it determines the residual gas evaluation index and the amount of desorbable gas based on the monitoring data and the gas geological benchmark parameters of the current evaluation area, wherein the pre-drainage time difference coefficient is determined based on the pre-drainage time data of each borehole; based on the residual gas evaluation index and the amount of desorbable gas, it determines the evaluation result of the current evaluation area to be drained. By acquiring real-time monitoring data and pre-drainage time data for each borehole from the start of extraction to the current moment, the traditional manual statistical method is replaced, solving the problems of data lag and low efficiency. The introduction of a pre-drainage time difference coefficient quantifies the uniformity of extraction in each borehole. Combined with gas geological benchmark parameters and monitoring data, residual gas indicators and desorbable gas volume are calculated collaboratively, overcoming the shortcomings of traditional evaluation models that ignore spatiotemporal differences and have poor adaptability to complex working conditions, thus significantly improving the accuracy of evaluation. The entire process is closely connected to form a closed loop, effectively solving the problem of process disconnect in traditional methods, and achieving a comprehensive improvement in evaluation efficiency, accuracy, and process continuity.

[0049] In some embodiments, the residual gas evaluation indicators include residual gas content and residual relative gas pressure; determining the evaluation result of the current area to be extracted based on the residual gas evaluation indicators and the amount of desorbable gas includes: determining the evaluation result as compliant when any of the following conditions are met: Condition 1: the residual gas content is less than or equal to a first threshold, and the amount of desorbable gas is less than or equal to a second threshold; Condition 2: the residual relative gas pressure is less than or equal to a third threshold, and the amount of desorbable gas is less than or equal to a second threshold; if neither Condition 1 nor Condition 2 is met, then the evaluation result is determined as non-compliant.

[0050] In this embodiment, residual gas content can be understood as the amount of gas remaining in a unit mass of coal after extraction, and is a core indicator for measuring the effectiveness of coal seam gas extraction; the lower the content, the more thorough the extraction. Residual relative gas pressure can be understood as the remaining gas pressure in the coal seam after extraction, used to assess the risk of gas outbursts and the degree of energy release from the coal seam; the lower the pressure, the more stable the gas occurrence state. The first threshold is a pre-set safe critical value for residual gas content. The second threshold is a pre-set safe critical value for the amount of desorbable gas. The third threshold is a pre-set safe critical value for residual relative gas pressure.

[0051] For example, the first threshold is set to 8 m³ / t (residual gas content), the second threshold is set to 7 m³ / t (desorbable gas volume), and the third threshold is set to 0.74 MPa (residual relative gas pressure). If the calculated residual gas content in the current evaluation area to be extracted is ≤8 m³ / t and the desorbable gas volume is ≤7 m³ / t, it is considered to meet the standard; or, if the residual relative gas pressure is ≤0.74 MPa and the desorbable gas volume is ≤7 m³ / t, it is considered to meet the standard. If neither of the above two conditions is met, it is considered to fail to meet the standard, and extraction needs to continue or the extraction plan needs to be adjusted.

[0052] Optionally, the evaluation results can be displayed on the interface in the form of visual charts, such as bar charts or line charts.

[0053] By setting a dual combination criterion of residual gas content, residual relative gas pressure and desorbable gas quantity, the standard is determined as long as any combination of conditions is met. This determination method is more flexible, can avoid misjudgment based on a single indicator, and makes the evaluation of extraction compliance more reliable and safer.

[0054] In some embodiments, the gas geological benchmark parameters further include initial coal reserves and initial gas content; determining the residual gas content based on the monitoring data and the gas geological benchmark parameters of the current evaluation area to be extracted includes: determining the total amount of extracted gas according to the amount of extracted gas from each borehole in the monitoring data; calculating the ratio of the total amount of extracted gas to the initial coal reserves; and determining the residual gas content based on the difference between the initial gas content and the ratio.

[0055] In this embodiment, the initial coal reserves can be understood as the total mass of coal contained in the current evaluation area before extraction, serving as the benchmark parameter for calculating the gas content per ton of coal and evaluating the extraction effect. The initial gas content can be understood as the volume of gas contained in a unit mass of coal before extraction, typically expressed in m³ / t, reflecting the original gas occurrence state of the coal seam. The extracted gas volume can be understood as the actual gas volume extracted from a single borehole during the extraction process, obtained through real-time monitoring by a flow meter installed in the borehole extraction pipeline. The total extracted gas volume is the sum of the cumulative gas volumes extracted from all boreholes in the current evaluation area, i.e., the sum of the gas volumes extracted from each borehole, and is the core data for evaluating the overall extraction effect.

[0056] Specifically, the residual gas content is determined using the following methods. :

[0057]

[0058] in, Q represents the initial gas content, Q represents the total extracted gas, and G represents the initial coal reserves.

[0059] The above technical solutions enable accurate calculation of gas content per ton of coal and quantitative evaluation of extraction effectiveness, effectively improving the accuracy and reliability of residual gas content calculation.

[0060] In some embodiments, the initial coal reserves are determined based on the strike length, dip length, equivalent width of gas pre-discharge in the strike roadway, equivalent width of gas pre-discharge in the dip roadway, effective influence radius of the preset borehole, average coal seam thickness, and coal density of the current evaluation area to be extracted. By comprehensively calculating multiple parameters, the accuracy of the initial coal reserves is improved, providing a reliable data foundation for subsequent evaluations.

[0061] Specifically, the initial coal reserves G are calculated as follows:

[0062]

[0063] in, This represents the length of the current sampling and evaluation area. The trend length of the current sampling evaluation area. To ensure the equivalent width of the gas pre-discharge in the roadway, To ensure the equivalent width of gas pre-discharge in inclined roadways, To preset the effective radius of influence of the borehole, The average coal seam thickness. This refers to the density of coal.

[0064] The strike length, dip length, equivalent width of gas pre-discharge in strike roadways, equivalent width of gas pre-discharge in dip roadways, average coal seam thickness, and coal density of the current evaluation area to be extracted can be obtained through spatial interpolation and attribute analysis based on gas raster data. Gas raster data refers to regular grid data formed by discretizing parameters such as gas content and coal seam thickness in the evaluation area according to geographic space.

[0065] In some embodiments, the basic compliance conditions include at least one of the following:

[0066] Does the extraction system meet the required operating status?

[0067] Have extraction plans and annual plans been prepared?

[0068] Is the extraction project design adequate?

[0069] Whether the layout of sampling and measurement points meets the standards;

[0070] Are the progress records of the extraction project complete?

[0071] By verifying the basic compliance conditions, we can ensure that the sampling project is legal and compliant and the data is reliable, thereby improving the rigor of the evaluation process and the credibility of the evaluation results.

[0072] In some embodiments, after determining the evaluation result of the current sampling evaluation area, the method further includes: generating an evaluation result report based on the evaluation result using a preset evaluation report template.

[0073] In this embodiment, the preset evaluation report template is a standardized template for evaluating extraction effectiveness built into the system. This preset evaluation report template can include core content sections such as working face overview, geological structure, ventilation and gas conditions, and extraction effectiveness evaluation, ensuring that the report structure is complete and all elements are included.

[0074] Specifically, the system automatically fills in data such as residual gas content and desorbable gas volume based on the evaluation results, supports online editing and modification of information, and generates a standardized and complete single-face extraction compliance evaluation report with one click. The report can be directly exported as a PDF or Word document for archiving. This achieves standardized output and management of evaluation results, significantly improving the efficiency and standardization of report preparation.

[0075] Optionally, the evaluation results report may also include the predicted remaining time to achieve the target extraction time, which is dynamically calculated based on real-time monitoring data and by fitting a curve of the total extraction volume over time using the nonlinear least squares method.

[0076] Optionally, the evaluation results report may also include the drilling footage per ton of coal and the predicted total extraction time, or the drilling footage per ton of coal and the predicted total borehole size, to provide users with reference for engineering planning and decision-making.

[0077] The predicted total extraction time and total borehole size are determined based on the following correlations:

[0078]

[0079] The drilling footage per ton of coal can be determined based on the following methods:

[0080]

[0081] in, , The correlation coefficient between the radius of influence and time of borehole extraction ( (This can be determined or adjusted by the user based on the geological and engineering conditions of the mining area.) This indicates the predicted total extraction time, obtained based on the above correlation, given the user-defined target borehole size. This indicates the predicted total borehole size, obtained based on the above correlation, given the user-defined target total extraction time. This represents the length of the current sampling and evaluation area. This represents the trend length of the current sampling evaluation area. This represents the initial coal reserves.

[0082] Optionally, to improve the accuracy and efficiency of data acquisition, this method also supports batch acquisition of borehole design and construction information, including but not limited to parameters such as borehole diameter, inclination angle, azimuth angle, and borehole length, by extracting data from the borehole design system or importing standard format files (such as Excel). Based on this, it can automatically generate borehole layout plans and trajectory maps, and provide query and statistical functions based on multiple conditions such as construction time and borehole type.

[0083] Optionally, to improve user experience and decision-making efficiency, the method also includes generating a visualization interface to centrally display core data of the mine and each area to be evaluated for extraction, including but not limited to gas extraction volume, ventilation gas volume, extraction rate, residual gas content, and expected time to meet standards, so as to achieve global visualization monitoring of the extraction situation.

[0084] Example 2

[0085] Figure 2 This is a schematic diagram of the structure of a gas extraction evaluation device provided in Embodiment 2 of the present invention. Figure 2 As shown, the device includes:

[0086] The area determination module 21 is used to determine each area to be evaluated for extraction based on the mine gas geological map;

[0087] The data acquisition module 22 is used to acquire the monitoring data of the current area to be extracted and the pre-extraction time data of each borehole for each area to be extracted and evaluated. The pre-extraction time data includes the time from the start of extraction to the current evaluation time of the borehole.

[0088] The parameter determination module 23 is used to determine the residual gas evaluation index and the amount of desorbable gas based on the monitoring data and the gas geological benchmark parameters of the current evaluation area, provided that the current evaluation area meets the basic compliance conditions and the pre-drainage time difference coefficient of the current evaluation area meets the technical evaluation access conditions. The pre-drainage time difference coefficient is determined based on the pre-drainage time data of each borehole.

[0089] The result determination module 24 is used to determine the evaluation result of the current evaluation area to be extracted based on the residual gas evaluation index and the amount of desorbable gas.

[0090] The technical solution provided in Embodiment 2 of this invention replaces the traditional manual statistical method by acquiring real-time monitoring data and pre-drainage time data of each borehole from the start of extraction to the current moment, thus solving the problems of data lag and low efficiency. It introduces a pre-drainage time difference coefficient to quantify the uniformity of extraction in each borehole, and combines gas geological benchmark parameters with monitoring data to collaboratively calculate residual gas indicators and desorbable gas volume. This overcomes the shortcomings of traditional evaluation models that ignore spatiotemporal differences and have poor adaptability to complex working conditions, significantly improving the accuracy of evaluation. The entire process is closely connected to form a closed loop, effectively solving the problem of process disconnect in traditional methods, and achieving a comprehensive improvement in evaluation efficiency, accuracy, and process continuity.

[0091] Optionally, the residual gas evaluation indicators include residual gas content and residual relative gas pressure;

[0092] Optionally, the result determination module 24 includes:

[0093] The evaluation result is deemed satisfactory when any of the following conditions are met:

[0094] Condition 1: The residual gas content is less than or equal to the first threshold, and the amount of desorbable gas is less than or equal to the second threshold;

[0095] Condition 2: The residual relative gas pressure is less than or equal to the third threshold, and the amount of desorbable gas is less than or equal to the second threshold;

[0096] If neither condition one nor condition two is met, the evaluation result is determined to be substandard.

[0097] Optionally, the gas geological benchmark parameters may also include initial coal reserves and initial gas content;

[0098] Optionally, the parameter determination module 23 includes:

[0099] The total amount determination unit is used to determine the total amount of extracted gas based on the amount of extracted gas from each borehole in the monitoring data.

[0100] A ratio determination unit is used to calculate the ratio of the total extracted gas to the initial coal reserves;

[0101] The content determination unit is used to determine the residual gas content based on the difference between the initial gas content and the ratio.

[0102] Optionally, the initial coal reserves are determined based on the strike length, dip length, equivalent width of gas pre-discharge in the strike roadway, equivalent width of gas pre-discharge in the dip roadway, effective influence radius of the preset borehole, average coal seam thickness, and coal density of the current evaluation area to be extracted.

[0103] Optionally, the basic compliance conditions include at least one of the following:

[0104] Does the extraction system meet the required operating status?

[0105] Have extraction plans and annual plans been prepared?

[0106] Is the extraction project design adequate?

[0107] Whether the layout of sampling and measurement points meets the standards;

[0108] Are the progress records of the extraction project complete?

[0109] Optionally, the device further includes:

[0110] The report generation module is used to generate an evaluation result report based on the evaluation results and using a preset evaluation report template.

[0111] The gas extraction evaluation device provided in this embodiment of the invention can execute the gas extraction evaluation method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0112] Example 3

[0113] Figure 3 This is a schematic diagram of an electronic device provided in Embodiment 3 of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0114] like Figure 3As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0115] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0116] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the evaluation methods for gas extraction.

[0117] In some embodiments, the gas extraction evaluation method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the gas extraction evaluation method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the gas extraction evaluation method by any other suitable means (e.g., by means of firmware).

[0118] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0119] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0120] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0121] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0122] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0123] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0124] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0125] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

[0126] This invention also provides a computer program product, including a computer program and / or instructions, which, when executed by a processor, implements the gas extraction evaluation method as provided in any embodiment of this application.

[0127] In implementing the computer program product, computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0128] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for evaluating gas extraction, characterized in that, include: Based on the mine gas geological map, each area to be evaluated for extraction was determined; For each area to be evaluated by extraction, the monitoring data of the current area to be evaluated by extraction and the pre-extraction time data of each borehole are obtained. The pre-extraction time data includes the time from the start of extraction to the current evaluation time of the borehole. If the current gas extraction evaluation area meets the basic compliance conditions and the pre-extraction time difference coefficient of the current gas extraction evaluation area meets the technical evaluation access conditions, the residual gas evaluation index and the amount of desorbable gas are determined based on the monitoring data and the gas geological benchmark parameters of the current gas extraction evaluation area. The pre-extraction time difference coefficient is determined based on the pre-extraction time data of each borehole. Based on the residual gas evaluation index and the amount of desorbable gas, the evaluation result of the current evaluation area to be extracted is determined.

2. The method according to claim 1, characterized in that, The residual gas evaluation indicators include residual gas content and residual relative gas pressure; The determination of the evaluation result of the current area to be extracted based on the residual gas evaluation index and the amount of desorbable gas includes: The evaluation result is deemed satisfactory when any of the following conditions are met: Condition 1: The residual gas content is less than or equal to the first threshold, and the amount of desorbable gas is less than or equal to the second threshold; Condition 2: The residual relative gas pressure is less than or equal to the third threshold, and the amount of desorbable gas is less than or equal to the second threshold; If neither condition one nor condition two is met, the evaluation result is determined to be substandard.

3. The method according to claim 2, characterized in that, The gas geological benchmark parameters also include initial coal reserves and initial gas content; Based on the monitoring data and the gas geological baseline parameters of the current area to be extracted and evaluated, the residual gas content is determined, including: The total amount of gas extracted is determined based on the amount of gas extracted from each borehole in the monitoring data. Calculate the ratio of the total extracted gas to the initial coal reserves; The residual gas content is determined based on the difference between the initial gas content and the ratio.

4. The method according to claim 3, characterized in that, The initial coal reserves are determined based on the strike length, dip length, equivalent width of gas pre-discharge in the strike roadway, equivalent width of gas pre-discharge in the dip roadway, effective influence radius of the preset borehole, average coal seam thickness, and coal density of the current evaluation area to be extracted.

5. The method according to claim 1, characterized in that, The basic compliance requirements include at least one of the following: Does the extraction system meet the required operating status? Have extraction plans and annual plans been prepared? Is the extraction project design adequate? Whether the layout of sampling and measurement points meets the standards; Are the progress records of the extraction project complete? 6. The method according to claim 1, characterized in that, After determining the evaluation result of the current sampling evaluation area, the method further includes: Based on the evaluation results, an evaluation result report is generated using a preset evaluation report template.

7. A gas extraction evaluation device, characterized in that, include: The area determination module is used to determine each area to be evaluated for extraction based on the mine gas geological map; The data acquisition module is used to acquire the monitoring data of the current area to be extracted and evaluated and the pre-extraction time data of each borehole for each area to be extracted and evaluated. The pre-extraction time data includes the time from the start of extraction to the current evaluation time of the borehole. The parameter determination module is used to determine the residual gas evaluation index and the amount of desorbable gas based on the monitoring data and the gas geological benchmark parameters of the current evaluation area, provided that the current evaluation area meets the basic compliance conditions and the pre-drainage time difference coefficient of the current evaluation area meets the technical evaluation access conditions. The pre-drainage time difference coefficient is determined based on the pre-drainage time data of each borehole. The result determination module is used to determine the evaluation result of the current evaluation area to be extracted based on the residual gas evaluation index and the amount of desorbable gas.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the gas extraction evaluation method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the gas extraction evaluation method according to any one of claims 1-6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the gas extraction evaluation method according to any one of claims 1-6.

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