CN114444405A - Standard judgment method and system for standardized gas extraction of coal mine - Google Patents
Standard judgment method and system for standardized gas extraction of coal mine Download PDFInfo
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Abstract
The invention discloses a standardized coal mine gas extraction standard reaching judgment method and a standardized coal mine gas extraction standard reaching judgment system, wherein the method divides gas extraction standard reaching judgment into 5 steps to carry out standard reaching judgment on 22 indexes according to coal mine gas extraction standard reaching judgment processes and objects: the first step is 8 indexes of standard-reaching judgment of basic conditions; the second step is 3 indexes of standard-reaching judgment of the drill hole arrangement; the third step is 3 indexes of standard judgment of the pre-pumping effect index; the fourth step is 4 indexes of standard judgment of the actually measured effect indexes; the fifth step is to monitor 4 indexes of index standard judgment. The invention also discloses 7 user interface structures of the standardized coal mine gas extraction standard judgment system, which comprise: the system comprises an input interface of a standard-reaching judgment position, a standard-reaching judgment interface of a basic condition, a standard-reaching judgment interface of a drilling arrangement, a standard-reaching judgment interface of a pre-pumping effect index, a standard-reaching judgment interface of an actual measurement effect index, a standard-reaching judgment interface of a monitoring index and an output interface of a standard-reaching judgment result. The aim of judging whether the coal mine gas extraction reaches the standard is achieved by inputting relevant parameters on a corresponding interface, and the method and the system have normativity, are convenient and easy to use.
Description
Technical Field
The invention relates to a standard, convenient and easy-to-use coal mine gas extraction standard-reaching judgment method and system
Background
The standard reaching judgment of the gas extraction of the coal mine is an important link before the mining production of the coal mine, and the current standard reaching judgment method mainly divides the standard reaching judgment of the gas extraction into 2 steps according to the national standard specification: the first step is standard judgment of basic conditions, and the second step is standard judgment of extraction effect. The standard-reaching judgment method is light and heavy, and the standard-reaching judgment of the second step involves more parameters and has a complex calculation process. And the standard reaching judgment of mine gas extraction is difficult to be effectively guided. According to the standardized standard reaching judgment method, the gas extraction standard reaching judgment is divided into 5 indexes of 22 steps according to the judgment process and the judgment object, and 7 user interfaces of a judgment system are constructed. And the standard reaching judgment of each next step needs to be carried out after the previous step reaches the standard, so that the standard reaching judgment process of the gas extraction is standardized and facilitated.
Disclosure of Invention
In order to solve the problems that the existing coal mine gas extraction standard-reaching judgment method is light and heavy, the calculation process is complex and is easy to make mistakes, the patent provides a standard, convenient and easy-to-use coal mine gas extraction standard-reaching judgment method and system. According to the coal mine gas extraction standard-reaching judgment process and the coal mine gas extraction standard-reaching judgment object, the gas extraction standard-reaching judgment is divided into 5 indexes of 22 steps, 7 user interfaces of the system judgment are constructed, and standard and convenient judgment of the coal mine gas extraction is achieved.
The technical scheme of the invention comprises the following 5 steps of 22 indexes and 7 user interfaces:
the first step, the basic condition reaches the standard and judges 8 indexes: the basic condition standard-reaching judgment content comprises whether a gas extraction system is established or not, and the gas extraction system is normal and operates continuously; whether 8 system conditions such as gas extraction planning, annual planning and the like are formulated or not is determined. Before the standard-reaching judgment of the step is carried out, a standard-reaching judgment position selection interface is designed, and after the user selects a position, the first step of standard-reaching judgment is carried out. The user interface in the step is designed to select 8 indexes, and a user selects whether the standard provided in the interface meets the extraction region condition.
And secondly, arranging drill holes to achieve the standard and judging 3 indexes, wherein the standard reaching judgment content comprises whether the effective control range of the extraction drill holes meets the requirement or not, whether the uniformity degree of the drill holes in the effective control range is reasonable or not and whether the pre-extraction time difference coefficient of the judgment unit is less than 30% or not. The user interface in the step is designed to output the judgment result in the last step and the index data required to be input in the judgment step, and comprises the steps of drilling hole arrangement, uniformity degree conformance selection and extraction day number input.
Thirdly, judging 3 indexes of the pre-extraction effect index after reaching the standard: the judgment content judges the residual gas content, the residual gas pressure and the solvable gas content of the unit coal seam according to the parameters and the gas extraction quantity of the unit coal seamAnd (5) analyzing the gas quantity for calculation. The standard reaching condition is that the residual gas content is less than 6m3And t, the residual gas pressure is less than 0.6MPa, and the analyzable gas content meets the corresponding daily output index shown in table 1. The step user interface is designed to output the standard-reaching judgment result of the last step and the input of the calculation data required by the judgment index of the step. Firstly, the calculation and evaluation unit participates in the calculation of coal reserves, then the residual gas content is calculated, then the residual gas pressure is calculated, and finally the analyzable gas content is calculated.
The analyzable gas content should meet the corresponding indexes in table 1:
TABLE 1 analyzable index to be reached by gas content
Fourthly, judging 4 indexes of the actual measurement effect indexes after reaching the standard: the evaluation contents comprise 'residual gas content', 'residual gas pressure', 'analyzable gas content' and 'the existence of dynamic phenomena such as spray holes, top drilling and the like in the actual measurement process', and the like, which are actually measured on site, and the data sources are all the actual measurement data of the extraction area. The user interface of the step is designed to output the standard-reaching judgment result of the last step and the input of the calculation data required by the judgment index of the step, and the selection of dynamic phenomena such as spray holes, top drilling and the like exists in the actual measurement process.
Fifthly, judging 4 indexes after the monitoring indexes reach standards: the judgment contents comprise the gas extraction rate of the working face, the wind speed of the mining working face, the gas concentration in the return airway and the gas extraction rate of the mine. The wind speed of the excavation working face is not more than 4m/s, and the gas concentration in the return air flow is less than 1%. The step user interface is designed to output the standard-reaching judgment result of the last step and input the calculation data required by the judgment index of the step. And after the step of standard-reaching judgment is finished, outputting a standard-reaching judgment result interface, and selecting to judge again or store the judgment result by the user through the interface.
The gas extraction rate of the working face meets the corresponding indexes in the table 2:
TABLE 2 index to be achieved for extraction rate of working face
The mine gas extraction rate index should meet the corresponding indexes as table 3:
TABLE 3 index to be achieved for mine extraction
The method for judging the standard reaching by adopting the 5 steps has the effects that: the method has the advantages that all steps of coal mine gas extraction standard-reaching judgment and parameters required to be input in each step are defined, and a user can conveniently conduct standard-reaching judgment at any time. And (4) the user carries out standard judgment on each step in sequence, when the index judgment of a certain step is not up to standard, the system only outputs a result which is not up to standard, and the next step judgment data input interface is not output, namely the next step judgment of up to standard cannot be carried out. So as to ensure that the indexes in the previous step all reach the standard. When the standard-reaching judgment result of a certain step is not up to standard, the system informs a user that the step is not up to standard, so that measures for increasing the gas extraction effect are taken conveniently in time, the problem that the gas extraction of a coal mine is not up to standard for a long time is avoided, gas accidents are prevented, and the safe and orderly operation of the coal mine is promoted.
Drawings
FIG. 1 is a flow chart of a standardized coal mine gas extraction standard-reaching judgment method and system.
FIG. 2 is a diagram of a position input interface for standard judgment.
FIG. 3 is a diagram of a standard-meeting basis criteria evaluation interface.
FIG. 4 is a diagram of a drill hole placement achievement assessment interface.
FIG. 5 is a drawing of an interface for judging the achievement of the pre-extraction effect index.
FIG. 6 is a diagram of an actual measurement result index standard assessment interface.
FIG. 7 is a diagram of a monitoring index compliance assessment interface.
FIG. 8 is an interface diagram of the standard judgment result output.
Detailed Description
The patent discloses a standardized coal mine gas extraction standard-reaching judgment method and a standardized coal mine gas extraction standard-reaching judgment system, and further detailed description is carried out by combining a specific implementation mode in order to enable the standardization and the convenience and the usability of the patent to be clearer and more definite.
Taking the standard judgment of gas extraction in the external section area of the ten-mine horizontal coal mine 15-24080 working face as an example, the 15-24080 mining face is located in the west wing third stage of the four-mine horizontal coal mine six mining area, and the coal seam mined by the working face is a 15-mine seam.
The position information of the judgment area is input into a standard judgment position input interface, as shown in fig. 2, after a standard judgment mine and an area are input, the system enters a first step judgment interface.
The standard-meeting evaluation interface of the basic conditions is shown in fig. 3, and in this example, the basic conditions of the extraction area all meet the requirements. All conditions are selected, and the system enters a second step judgment interface.
The drilling hole arrangement standard-reaching judgment interface is shown in fig. 4, and in the embodiment, the standard-reaching judgment results of the last step are all output to reach the standard. And inputting the drilling hole arrangement conditions in the step, judging the drilling hole days of the longest extraction time in the region to be 2354 days, and judging the drilling hole days of the shortest extraction time to be 1732 days, and enabling the system to enter a judgment interface in the third step.
The pre-extraction effect index standard-reaching judgment interface is shown in fig. 5, and in this example, the output of the standard-reaching judgment result of the previous step is: the drilling arrangement meets the requirements, the drilling difference coefficient is 26.423%, and the result is that the drilling reaches the standard. After the pre-extraction effect index parameters in the step are input through the interface, the system enters a fourth step judgment interface.
The actual measurement index standard reaching evaluation interface is shown in fig. 6, in this example, the output of the evaluation result of the last step is: the drilling amount of 0.267m/t per ton of coal is more than 0.05 m/t; residual gas content 5.068m3T is less than 0.6m3T; the residual gas pressure of 0.448MPa is less than 0.6 MPa; analyzable gas content of 3.877m3T is less than 7m3T; the pre-pumping effect index standard-reaching judgment resultThe fruit reaches the standard. Inputting the maximum residual gas content measured on site to be 5.067m3And t, the maximum residual gas pressure is 0.54MPa, and after data such as an actual measurement drilling unpowered phenomenon and the like are selected, the system enters a fifth step judgment interface.
The monitoring index standard-reaching judgment interface is shown in fig. 7, and in this example, the standard-reaching judgment results of the last step are all output to reach the standard. After the monitoring data value in this step is input, the system outputs the interface of the final standard evaluation result as shown in fig. 8. In this example, each index of the standard-reaching evaluation area reaches the standard, so that the gas extraction of the extraction area reaches the standard.
The standard judgment method and the standard judgment system for gas extraction of the standard coal mine have the advantages that the standard judgment result of gas extraction in the working surface outer section area of 15-24080 of the deca-mine of the flat coal is shown, the method defines 5 steps of extraction standard judgment, solves the difficulties that standard judgment indexes are complex in manual calculation, prone to error and the like, achieves standard management of gas extraction standard judgment, facilitates users to master the standard condition in time, and adopts extraction efficiency improvement measures to promote balanced development of extraction, excavation and extraction under the high-yield and high-efficiency conditions of the coal mine.
Claims (2)
1. A standardized coal mine gas extraction standard-reaching judgment method and a standardized coal mine gas extraction standard-reaching judgment system are characterized in that the judgment method comprises the following 5 steps of 22 indexes:
(1) the first step is as follows: and (3) standard judgment of the basic conditions, wherein the judgment content comprises 8 indexes of whether a gas extraction system is established and operates continuously normally, whether a gas extraction plan and an annual plan are formulated and the like.
(2) The second step is as follows: and (3) performing standard judgment on the arrangement of the drill holes, wherein the standard judgment content comprises 3 indexes of whether the effective control range of the extraction drill holes meets the requirement of the effective control range, whether the uniform degree of the drill holes is met, whether the pre-extraction time difference coefficient meets the requirement of less than 30%, and the like.
(3) The third step: the pre-pumping effect index reaches the standard for judgment, and the judgment content is 3 indexes of residual gas content, residual gas pressure, analyzable gas content and the like pre-pumped by the judgment unit. The index calculation process is as follows: firstly, calculating the coal reserves of the evaluation unit, then calculating the residual gas content, then calculating the residual gas pressure, and finally calculating the analyzable gas content.
(4) The fourth step: the actually measured effect index reaches the standard and is judged, and the judgment contents are 4 indexes of residual gas content, residual gas pressure, analyzable gas content, dynamic phenomena such as spray holes, top drilling and the like in the actually measured process and the like.
(5) The fifth step: and (3) performing standard judgment on the monitoring indexes, wherein the judgment contents comprise 4 indexes such as the working face gas extraction rate, the mining working face wind speed, the gas concentration in a return airway, the mine gas extraction rate and the like.
2. The standardized coal mine gas extraction standard reaching judgment method and system according to claim 1, wherein the judgment system comprises the following 7 interface structures:
(1) a standard reaching judgment position input interface: position information of mines, areas and the like needing standard reaching judgment is input through the interface, or position information of the mines and the areas which are subjected to standard reaching judgment originally is selected.
(2) And (3) a standard basic condition judgment interface: and the method is used for judging whether the 8 basic condition indexes meet the gas extraction standard judgment regulation or not. If the basic conditions are all met, the system enters the next step for judgment; if one or more of the items are not qualified, the system outputs a result of not reaching the standard and does not output a judgment interface of the next step.
(3) Drilling hole arrangement standard judgment interface: the interface composition is input into the drill hole arrangement condition and the extraction days. If the 3 indexes of the drill hole arrangement, the uniformity degree and the effectiveness of the judging unit reach the standard, the system enters the next step of judging; if one or more items are not met, the system outputs a result of not meeting the standard and does not output a next step judgment interface.
(4) Pre-extraction effect index standard judgment interface: the pre-pumping effect index interface is used for inputting data such as general parameters of the evaluation unit, basic parameters of the gas and the like. If all the pre-pumping effect index 3 items reach the standard through calculation, the system enters the next step for judgment; if one or more items are not met, the system outputs a result of not meeting the standard and does not output a next step judgment interface.
(5) Actual measurement effect index standard judgment interface: the actually measured effect index interface is actually measured gas content and gas pressure, and the actually measured drill hole has data input such as unpowered phenomenon. If the actual measurement effect indexes 4 reach the standard, the system enters the next step of judgment; if one or more items are not met, the system outputs a result of not meeting the standard and does not output a next step judgment interface.
(6) Monitoring index standard-reaching judgment interface: the interface content is the input of ventilation monitoring data, extraction monitoring data and gas emission quantity data, and after 4 indexes of the step are judged, a standard judgment result interface is output.
(7) Outputting an interface of standard judgment results: if the last step reaches the standard, outputting a standard result; and if the previous step does not reach the standard, outputting a result of not reaching the standard. The user can choose to carry out standard-reaching judgment again or store a standard-reaching judgment result through the interface.
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| CN114837657A (en) * | 2022-05-26 | 2022-08-02 | 贵州大学 | Coal mine underground gas extraction borehole failure evaluation system |
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| CN114837657A (en) * | 2022-05-26 | 2022-08-02 | 贵州大学 | Coal mine underground gas extraction borehole failure evaluation system |
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