Coal mine pre-extraction working face gas extraction standard reaching auxiliary evaluation method

Abstract

The invention discloses a coal mine pre-extraction working face gas extraction standard reaching auxiliary evaluation method. The method comprises the following steps that S1, basic conditions of an extraction unit are judged; s2, extraction data pre-evaluation, namely extraction unit effect pre-evaluation; s3, the extraction standard reaching parameters are verified; s4, extraction standard reaching final evaluation is carried out; and S5, exporting an evaluation report. The coal mine pre-extraction working face gas extraction standard-reaching auxiliary evaluation method is suitable for the requirements of all mines in all places, and the gas extraction standard-reaching process of evaluation items can be customized.

Description

Technical Field

[0001] The invention relates to the technical field of coal seam gas control in underground coal mines, and in particular to an auxiliary evaluation method for gas extraction compliance of a coal mine pre-extraction working face. Background Art

[0002] Gas is a dangerous gas in coal mining that may cause explosions or other accidents, so its concentration must be reduced through early extraction and treatment. In order to comply with local safety standards and regulations, mines need to achieve specific gas extraction effects. This requires the establishment of a set of systematic evaluation standards and processes to ensure that coal mine extraction measures can meet local and national safety standards and can adapt to different mine conditions and gas grade requirements. In the management process of coal mines, coal mine gas extraction compliance is generally carried out offline. Based on the requirements of coal mine intelligent construction standards in various regions, some manufacturers have launched their own gas extraction compliance information systems. These systems are mainly aimed at real-time process data statistics and do not provide management process data.

[0003] In the current gas extraction online compliance system, mathematical deduction is generally performed based on the basic parameter information of the coal seam and the statistical parameters of the extraction process. The deduction generally makes statistical predictions based on mathematical models, lacks process documentation, and lacks verification records. In addition, due to the different locations of each mine, different gas occurrences, and different ventilation conditions, there are certain discrepancies in the gas extraction evaluation standards and the evaluation contents of each link of gas extraction compliance. There are mainly the following issues:

[0004] (1) Limitations of mathematical models: Existing systems usually make predictions based on certain mathematical models, but these models may not fully consider the individual differences of mines, such as gas occurrence status, geological structure, etc., resulting in poor model adaptability; more models are often static and fail to be updated in real time to reflect changes in mine conditions. There are not enough verification records to prove the accuracy and effectiveness of model predictions, resulting in the prediction results being unreliable and the inspection indicators being insufficiently reflected.

[0005] (2) Lack of process documentation and verification records: The lack of detailed process documentation in the system makes it difficult to trace and review each step, decision basis, and adjustment measures of the sampling process. There is a lack of file traceability preview and insufficient process transparency.

[0006] (3) Data collection and processing issues: The gas extraction compliance system is often used as a platform analysis software. The data source of this software is the monitoring system. If real-time data is accessed from the monitoring system for statistical analysis, when problems such as transmission interruption occur, this part of the data cannot be updated synchronously, resulting in incomplete data between the upper and lower systems, affecting the system's prediction and judgment. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0008] To this end, the present invention proposes an auxiliary evaluation method for gas extraction compliance of coal mine pre-extraction working faces, which is adapted to the needs of various mines in various places and can customize the gas extraction compliance process of evaluation items.

[0009] According to an embodiment of the present invention, a method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face includes the following steps:

[0010] Step S1, evaluation of basic conditions of extraction units: upload various files and documents according to the defined basic conditions, and set the qualified status of various indicators. The whole process supports online preview of various files and documents;

[0011] Step S2, pre-evaluation of extraction data: that is, pre-evaluation of the extraction unit effect. If the basic conditions are qualified, the system will start the pre-evaluation of the extraction unit effect. If the system statistical extraction volume reaches or exceeds the defined qualified extraction volume of the extraction unit, the system task gas extraction pre-evaluation is qualified, and the next step is entered;

[0012] Step S3, verification of extraction parameters that meet the standards: effect verification data collection, through drilling construction, on-site records, coal seam residual gas pressure, actual drilling coal slag collection and laboratory measurement, obtain coal seam residual gas volume, analyzable gas volume, the verification personnel upload the verification document, fill in the record index parameters, the index is qualified, and proceed to the next step;

[0013] Step S4, final evaluation of extraction compliance: Final evaluation and verification of drilling parameters and ventilation data of pre-evaluated working face or unit, and the inspection personnel shall fill in and record the index parameters according to the supporting data statistics of the mine safety monitoring and control system, and proceed to the next step if the index is qualified;

[0014] Step S5, export of evaluation report: data integration, integrating the data from the basic evaluation, preliminary evaluation and effect verification stages, conducting a comprehensive analysis, and generating a final evaluation report based on the settings for online retrieval, query and download.

[0015] The beneficial effects of the present invention are: 1. Customized evaluation indicators and thresholds: Allow users to customize evaluation indicators and thresholds when creating evaluation tasks (basic information, preliminary evaluation, effect verification, final evaluation), thereby improving the flexibility and adaptability of the system; Provide a configuration interface in the system, and users can set and adjust evaluation indicators, and generate customized evaluation standards based on the conditions of specific mines. 2. Model library and standard I / O management: Provide a model library to support users in selecting suitable models, and provide standardized I / O interfaces for model management and upgrades; Support version control, configuration, and updates of models to ensure that the models can adapt to the needs of different mines. 3. Data synchronization and update: Ensure the synchronization and update of real-time monitoring data, and solve the problem of incomplete data caused by data transmission interruptions; Establish a real-time data access interface to ensure that the system can continuously receive and process data from the monitoring system, and achieve real-time update and consistency of data. 4. Complete process documentation and verification records: Provide process document upload, management and preview functions, record the verification process and adjustment measures at each stage, and improve the transparency and traceability of the system; implement a document management module in the system to support document upload, classification, search and preview, and record all operations and verification information in the process; use basic file data, real-time statistical data, and manual inspection and verification data to achieve evaluation and reduce unilateral errors and defects caused by human manipulation or data statistics.

[0016] According to one embodiment of the present invention, the evaluation items in step S2, step S4 and step S5 can be customized based on basic evaluation indicators when the evaluation unit is created, and support various document uploads and previews to solve process documents and verification mechanisms.

[0017] According to one embodiment of the present invention, in step S3, a model library is provided for each mine to select a suitable model according to its own extraction conditions and pipeline metering parameter characteristics, and a standard I / O gas extraction prediction and evaluation model management unit is provided.

[0018] According to an embodiment of the present invention, in step S3, the access part of the gas extraction channel allows synchronous monitoring of gas historical data to ensure consistency between upper and lower level data.

[0019] According to one embodiment of the present invention, in step S2, the evaluation unit is automatically executed by a program, and this part is designed with a model library, which provides an LSTM model based on a deep neural network and a fuzzy prediction model. The user selects a suitable prediction model according to the specific conditions of the mine.

[0020] According to one embodiment of the present invention, in step S2, the data processing logic is: based on the extraction start time and the associated gas extraction channel data calculation logic, the monitoring data of the real-time access to the mine is analyzed, and the data of the historical interval is synchronized and locally recorded.

[0021] According to one embodiment of the present invention, in step S2, the data processing process is: using the configured model to calculate and predict the real-time data to generate a pre-evaluation result, and the user can adjust the sampling plan according to the pre-evaluation result.

[0022] According to one embodiment of the present invention, before step S1, the following steps are also included:

[0023] Step S0-1, establishing a basic evaluation template for a gas extraction working face and a gas extraction unit;

[0024] Step S0-2, creating an evaluation target extraction working face or evaluation unit;

[0025] Step S0-3, selecting evaluation items for each evaluation stage;

[0026] Step S0-4, issuing process.

[0027] According to an embodiment of the present invention, in step S0-1, this stage implements basic evaluation information, pre-evaluation verification indicator definition, and final evaluation verification indicator definition.

[0028] According to one embodiment of the present invention, step S0-3 specifically includes the following steps:

[0029] Step S0-3-1, check the basic evaluation information template evaluation item;

[0030] Step S0-3-2, check the parameter verification indicator template evaluation item;

[0031] Step S0-3-3, check the final evaluation verification indicator template evaluation items.

[0032] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a basic flow chart of gas extraction reaching the standard of the present invention;

[0036] Figure 2 It is a flow chart of defining a gas extraction compliance evaluation template of the present invention;

[0037] Figure 3 It is the full flow chart of gas extraction compliance evaluation of the present invention;

[0038] Figure 4 This is a definition diagram of the gas extraction compliance evaluation template of the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The following is a detailed description of the auxiliary evaluation method for compliance with gas extraction standards in a coal mine pre-extraction working face according to an embodiment of the present invention with reference to the accompanying drawings.

[0041] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The coal mine pre-extraction working face gas extraction standard auxiliary evaluation method of the present invention comprises the following steps:

[0042] Step S1, evaluation of basic conditions of extraction units: upload various files and documents according to the defined basic conditions, and set the qualified status of various indicators, i.e. "qualified" / "unqualified". The whole process supports online preview of various files and documents;

[0043] Step S2, pre-evaluation of extraction data: that is, pre-evaluation of the extraction unit effect. If the basic conditions are qualified, the system will start the pre-evaluation of the extraction unit effect. If the system statistical extraction volume reaches or exceeds the defined qualified extraction volume of the extraction unit, the system task gas extraction pre-evaluation is qualified, and the next step is entered;

[0044] Step S3, verification of extraction parameters: effect verification data collection, through drilling construction, on-site records, coal seam residual gas pressure (H), actual drilling coal slag collection and laboratory measurement, obtain coal seam residual gas volume (Wcy), resolvable gas volume (Y), the verification personnel upload the verification document, fill in the record index parameters, the index is qualified, and proceed to the next step;

[0045] Step S4, final evaluation of extraction compliance: Final evaluation and verification of drilling parameters and ventilation data of pre-evaluated working face or unit. Ventilation parameters include gas concentration and wind speed of return air flow. Inspection personnel shall fill in and record index parameters according to the supporting data statistics of mine safety monitoring system. If the index is qualified, proceed to the next step;

[0046] Step S5, export of evaluation report: data integration, integrating the data from the basic evaluation, preliminary evaluation and effect verification stages, conducting a comprehensive analysis, and generating a final evaluation report based on the settings for online retrieval, query and download.

[0047] Among them, the evaluation items in step S2, step S4 and step S5 can all be customized according to basic evaluation indicators when the evaluation unit is created, and support various types of document upload and preview solution process documents and verification mechanisms.

[0048] In step S3, a model library is provided for each mine to select a suitable model according to its own extraction conditions and pipeline metering parameter characteristics, and a standard I / O gas extraction prediction and evaluation model management unit is provided to solve the problem of iterative upgrade of on-site model application.

[0049] In step S3, the access part of the gas extraction channel allows synchronous monitoring of gas historical data to ensure consistency between upper and lower level data, thus solving the problem of backward deployment of the evaluation system or loss of process statistical data due to lack of maintenance.

[0050] In step S2, the evaluation unit is automatically executed by a program. This part is designed with a model library, which provides LSTM models based on deep neural networks and fuzzy prediction models. Users can select a suitable prediction model based on the specific conditions of the mine (such as ventilation conditions and extraction pipeline parameters).

[0051] In step S2, the data processing logic is: according to the final definition of the extraction working face, the extraction start time, and the associated gas extraction channel data calculation logic, the real-time access to the mine monitoring data (such as gas concentration, extraction flow) is analyzed, and the data of the historical interval is synchronized and locally recorded.

[0052] In step S2, the data processing process is: use the configured model to calculate and predict the real-time data to generate pre-evaluation results, and the user can adjust the sampling plan according to the pre-evaluation results.

[0053] Before step S1, the method further includes the following steps:

[0054] Step S0-1, establishing a basic evaluation template for a gas extraction working face and a gas extraction unit;

[0055] Step S0-2, create an evaluation target gas extraction working face or evaluation unit: In the early stage, the target gas extraction working face and extraction unit must have been created in the system, and configured with the strike length of the working face or unit to be evaluated, coal reserves, gas occurrence information, qualified extraction volume, qualified resolvable gas volume, extraction start event and other information, and the extraction pipeline sensor parameters must be associated and bound;

[0056] Step S0-3, selecting evaluation items for each evaluation stage;

[0057] Step S0-4, issuing process.

[0058] In step S0-1, this stage implements basic evaluation information, pre-evaluation verification indicator definition, and final evaluation verification indicator definition. The specific operations are as follows:

[0059] Step S0-1-1, including the definition of basic condition information, extraction verification index definition, and final evaluation verification index definition. The basic evaluation information definition template definition generally needs to define basic extraction basic capabilities, gas management regulations, gas management annual plan, drilling design and construction plan and other management or engineering documents, which are increased or decreased according to the standards of each region.

[0060] Step S0-1-2, the custom evaluation items include several categories, such as: category 1, category 2, etc. Category 1 includes evaluation item 1, evaluation item 2, etc. Category 2 includes evaluation item 1, evaluation item 2, etc. In the pre-evaluation verification stage, the coal seam residual gas volume (Wcy), the resolvable gas volume (Y), and the coal seam residual gas pressure (H) are generally defined and their thresholds are set;

[0061] Step S0-1-3 includes basic condition information template, extraction verification index template, and final evaluation verification index template. The final evaluation verification index definition generally needs to define the coal seam residual gas volume (Wcy), resolvable gas volume (Y), coal seam residual gas pressure (H), wind speed (W), return air flow gas concentration (T) and set their thresholds.

[0062] Step S0-3 specifically includes the following steps:

[0063] Step S0-3-1, check the basic evaluation information template evaluation item;

[0064] Step S0-3-2, check the parameter verification indicator template evaluation item;

[0065] Step S0-3-3, check the final evaluation verification indicator template evaluation items.

[0066] The present invention includes the following advantages:

[0067] 1. Customized evaluation indicators and thresholds: Allow users to customize evaluation indicators and thresholds when creating evaluation tasks (basic information, preliminary evaluation, effect verification, final evaluation) to improve the flexibility and adaptability of the system; provide a configuration interface in the system, users can set and adjust evaluation indicators, and generate customized evaluation standards based on the conditions of specific mines.

[0068] 2. Model library and standard I / O management: Provide a model library to support users in selecting suitable models, and provide standardized I / O interfaces for model management and upgrades; support model version control, configuration and updates to ensure that the model can adapt to the needs of different mines.

[0069] 3. Data synchronization and update: Ensure the synchronization and update of real-time monitoring data to solve the problem of incomplete data caused by data transmission interruption; establish a real-time data access interface to ensure that the system can continuously receive and process data from the monitoring system and realize real-time update and consistency of data.

[0070] 4. Complete process documentation and verification records: Provide process document upload, management and preview functions, record the verification process and adjustment measures at each stage, and improve the transparency and traceability of the system; implement a document management module in the system to support document upload, classification, search and preview, and record all operations and verification information in the process; use basic file data, real-time statistical data, and manual inspection and verification data to achieve evaluation and reduce unilateral errors and defects caused by human manipulation or data statistics.

[0071] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face, characterized in that: The following steps are involved: Step S1, evaluation of basic conditions of extraction units: upload various files and documents according to the defined basic conditions, and set the qualified status of various indicators. The whole process supports online preview of various files and documents; Step S2, pre-evaluation of extraction data: that is, pre-evaluation of the extraction unit effect. If the basic conditions are qualified, the system will start the pre-evaluation of the extraction unit effect. If the system statistical extraction volume reaches or exceeds the defined qualified extraction volume of the extraction unit, the system task gas extraction pre-evaluation is qualified, and the next step is entered; Step S3, verification of extraction parameters that meet the standards: effect verification data collection, through drilling construction, on-site records, coal seam residual gas pressure, actual drilling coal slag collection and laboratory measurement, obtain coal seam residual gas volume, analyzable gas volume, the verification personnel upload the verification document, fill in the record index parameters, the index is qualified, and proceed to the next step; Step S4, final evaluation of extraction compliance: Final evaluation and verification of drilling parameters and ventilation data of pre-evaluated working face or unit, and the inspection personnel shall fill in and record the index parameters according to the supporting data statistics of the mine safety monitoring and control system, and proceed to the next step if the index is qualified; Step S5, export of evaluation report: data integration, integrating the data from the basic evaluation, preliminary evaluation and effect verification stages, conducting a comprehensive analysis, and generating a final evaluation report based on the settings for online retrieval, query and download.

2. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized by: The evaluation items in step S2, step S4 and step S5 can all be customized based on basic evaluation indicators when the evaluation unit is created, and support various document uploads and previews to solve process documents and verification mechanisms.

3. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized in that: In step S3, a model library is provided for each mine to select a suitable model according to its own extraction conditions and pipeline metering parameter characteristics, and a standard I / O gas extraction prediction and evaluation model management unit is provided.

4. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized in that: In step S3, the access part of the gas extraction channel allows synchronous monitoring of gas historical data to ensure consistency between upper and lower level data.

5. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized in that: In step S2, the evaluation unit is automatically executed by a program. This part is designed with a model library, which provides an LSTM model based on a deep neural network and a fuzzy prediction model. The user selects a suitable prediction model according to the specific conditions of the mine.

6. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized by: In step S2, the data processing logic is: according to the extraction start time and the associated gas extraction channel data calculation logic, the real-time access to the mine monitoring data is analyzed, and the historical interval data is synchronized and locally recorded.

7. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized in that: In step S2, the data processing process is: using the configured model to calculate and predict the real-time data to generate a pre-evaluation result, and the user can adjust the sampling plan according to the pre-evaluation result.

8. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 1 is characterized in that: Before step S1, the method further includes the following steps: Step S0-1, establishing a basic evaluation template for a gas extraction working face and a gas extraction unit; Step S0-2, creating an evaluation target extraction working face or evaluation unit; Step S0-3, selecting evaluation items for each evaluation stage; Step S0-4, issuing process.

9. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 8, characterized in that: In the step S0-1, this stage implements basic evaluation information, pre-evaluation verification indicator definition, and final evaluation verification indicator definition.

10. The method for assisting evaluation of gas extraction compliance in a coal mine pre-extraction working face according to claim 8, characterized in that: The step S0-3 specifically includes the following steps: Step S0-3-1, check the basic evaluation information template evaluation item; Step S0-3-2, check the parameter verification indicator template evaluation item; Step S0-3-3, check the final evaluation verification indicator template evaluation items.

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