CN113159586B - Regional gas extraction standard reaching evaluation visualization system and method - Google Patents
Regional gas extraction standard reaching evaluation visualization system and method Download PDFInfo
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Abstract
The invention belongs to the technical field of coal mine safety, and discloses a regional gas extraction standard-reaching evaluation visualization system and a method, wherein the system comprises a monitoring management module, a calculation evaluation module and a data visualization integration module; the monitoring management module comprises a data acquisition unit and a data storage unit, wherein the calculation evaluation module is used for storing a drilling effective control range, drilling distribution uniformity degree evaluation, gas extraction effect evaluation indexes and gas extraction effect standard evaluation indexes, the data acquisition unit is connected with the data storage unit, the data storage unit is connected with the calculation evaluation module, and the calculation evaluation module is connected with the data visualization integration module. The method comprises the steps of data information acquisition, data information comparison, data information display by a visual interface and the like. According to the method, analysis and visual display of the regional gas extraction standard evaluation are performed, so that the standard evaluation work is intelligentized and visualized, and the evaluation efficiency is improved. The method is suitable for regional gas extraction standard evaluation.
Description
Technical Field
The invention belongs to the technical field of coal mine safety, relates to gas extraction leakage evaluation, and particularly relates to a regional gas extraction standard evaluation visualization system and method.
Background
Along with further exploitation of coal resources in China, the mine exploitation depth is deepened continuously, the outstanding problems in the coal mine are also more serious, the outstanding dangers and the accident rate are also increased gradually, the safety of the mine is seriously threatened, and huge economic loss and bad social influence are caused for coal mine enterprises.
The regional gas extraction is taken as a method capable of effectively reducing the outburst of gas, plays a vital role in the gas prevention of mines, but has the characteristics of great complexity and high challenges in the working of standard evaluation of gas extraction due to different hydrogeological conditions in each region and different extraction methods. The traditional gas extraction evaluation method mainly relies on manual operation, and the evaluation result has poor reliability due to excessive artificial subjective influence factors, so that certain hidden danger exists for mine safety production.
Disclosure of Invention
The invention aims to provide a tile area gas extraction standard-reaching evaluation visualization system and method, so as to realize the intellectualization and visualization of area gas extraction standard-reaching evaluation and improve the evaluation efficiency.
The technical method adopted by the invention for achieving the purpose is as follows:
A regional gas drainage up-to-standard evaluation visualization system comprising: the system comprises a monitoring management module, a calculation evaluation module and a data visualization integration module; the monitoring management module comprises a data acquisition unit and a data storage unit, wherein the calculation evaluation module stores a drilling effective control range, drilling hole distribution uniformity degree evaluation, a gas extraction effect evaluation index and a gas extraction effect standard evaluation index, the data acquisition unit is connected with the data storage unit, the data storage unit is connected with the calculation evaluation module, the calculation evaluation module is connected with the data visualization integration module, and the data visualization integration module stores the possible problems in the regional extraction process and the regulation management command of the solution method in advance.
As a limitation: the regional gas extraction standard reaching evaluation visualization system further comprises a data statistics deriving module, and the data statistics deriving module is connected with the calculation evaluation module.
As another definition: the regional gas extraction standard reaching evaluation visualization system also comprises a system management module, wherein the system management module is connected with the data acquisition unit, realizes the management of a user, modifies, adds and/or deletes related parameter attributes in the data acquisition unit, and displays corresponding data.
The data acquisition unit comprises a gas concentration sensor, a negative pressure sensor, a flow sensor and a temperature sensor, the data storage unit is an NAS data storage server, the gas concentration sensor, the negative pressure sensor, the flow sensor and the temperature sensor are all connected with the NAS data storage server, and the NAS data storage server is connected with the calculation evaluation module.
The invention also provides a method of the regional gas extraction standard reaching evaluation visualization system, which comprises the following steps:
S1, a data acquisition unit acquires data information corresponding to a corresponding drilling number of a region to be detected, and extraction standard reaching early warning information is formed and stored in a data storage unit;
S2, the data storage unit sends the received extraction standard reaching early warning information to the calculation evaluation module, the calculation evaluation module correspondingly calculates the extraction standard reaching early warning information, compares the extraction standard reaching early warning information with a stored drilling effective control range, drilling hole distribution uniformity degree evaluation, gas extraction effect evaluation indexes and gas extraction effect standard reaching evaluation indexes, gives out corresponding evaluation information, adopts different colors for evaluation and grading, and sends the extraction standard reaching early warning information and the evaluation information to the data visualization integration module;
and S3, integrating the extraction standard reaching early warning information and the evaluation information into a comprehensive visual interface by the data visual integration module, displaying the data information and the evaluation information, and extracting corresponding regulation management commands prestored in the data visual integration module according to different problems corresponding to the real-time monitoring and calculating data and displaying the corresponding regulation management commands on the comprehensive visual interface.
As a limitation: the measuring method of the effective control range of the drilling hole specifically comprises the following steps: for bedding drilling, the effective range of drilling is determined according to the control edge line in the length direction of the drilling and the connecting line of the positions of two drilling holes at the edge; for layer-penetrating drilling, the effective range of drilling is the range outlined by the connecting line between the coal-seeing points of the adjacent effective edge holes; the control edge line in the length direction of the drilling is a connecting line of effective hole depth points of the drilling, and the final hole point of a short hole in the adjacent effective drilling is used as the effective hole depth point of the adjacent drilling;
And (3) evaluating the drilling and hole distribution uniformity: after the construction of the gas drilling of the pre-drainage coal bed is finished, evaluating the uniformity degree of the gas drilling in an effective control range, wherein the distance between the pre-drainage holes is smaller than or equal to the design distance, and the areas with the same drilling distance and consistent pre-drainage time are divided into an evaluation unit so as to be convenient for classification and evaluation;
The method for measuring the gas extraction effect evaluation index specifically comprises the following steps: when the pre-gas extraction effect of the same evaluation unit is evaluated, firstly, the residual gas content or residual gas pressure after extraction according to the extraction metering parameters and the desorbable gas quantity meet the expected standard index requirements, and then, the pre-gas extraction effect index is actually measured on site;
The standard evaluation indexes of the gas extraction effect are specifically as follows: when the gas emission amount comes from the coal face of the mining layer, judging whether the gas extraction effect of the evaluation range of the coal face meets the standard according to the daily output of the coal face and the desorbable gas amount in the evaluation range; for the outburst coal seam, when the residual gas pressure or the residual gas content of the coal seam measured by all measuring points in the evaluation range is smaller than the expected outburst prevention effect and reaches the standard gas pressure or gas content, and no jet hole, top drill or other power phenomenon exists in the process of construction measurement drilling, judging that the pre-extraction gas outburst prevention effect of the outburst coal seam in the evaluation range reaches the standard, otherwise, judging that the range of 100m radius with the superscript point as the circle center does not reach the standard; judging that the gas pre-extraction effect of the working face reaches the standard according to the absolute gas emission amount of the working face and the gas extraction rate of the working face for the coal face with the gas emission amount from the adjacent layer or surrounding rock; and for mine gas extraction, judging that the mine gas pre-extraction effect reaches the standard according to the absolute mine gas emission amount and the mine gas extraction rate.
As a further definition: the regional gas extraction standard reaching evaluation visualization system further comprises a system management module, wherein the system management module is connected with the data acquisition unit, in step S1, the system management module is used for managing users, modifying, adding and/or deleting related parameter attributes in the data acquisition unit and displaying corresponding data, the data acquisition unit is used for acquiring data information of a region to be detected, corresponding to corresponding drilling numbers, and forming extraction standard reaching early warning information which is stored in the data storage unit.
As another definition: the regional gas extraction standard reaching evaluation visualization system further comprises a data statistics deriving module, wherein the data statistics deriving module is connected with the calculation evaluating module, and in step S2, the calculation evaluating module sends extraction standard reaching early warning information and evaluation information to the data visualization integrating module and the data statistics deriving module.
As a further definition: in step S3, the data visual integration module integrates the extraction standard reaching early warning information and the evaluation information into a comprehensive visual interface, displays the data information and the evaluation information, and extracts corresponding regulation management commands prestored in the data visual integration module according to different problems corresponding to the data calculated by real-time monitoring and displaying on the comprehensive visual interface; and the data statistics deriving module records the extraction standard reaching early warning information and the evaluation information, and forms an extraction early warning information recording table for deriving and printing.
By adopting the scheme, compared with the prior art, the invention has the following beneficial effects:
(1) According to the regional gas extraction standard-reaching evaluation visual system provided by the invention, the calculation evaluation module is adopted to perform standard-reaching evaluation analysis on regional gas extraction, and the data visual integration module is adopted to realize visual display of the regional gas extraction standard-reaching evaluation, so that the work of the standard-reaching evaluation is intelligentized and visualized, the evaluation efficiency is improved, the evaluation cost is saved, and a certain reference value is provided for coal mine engineering technicians;
(2) According to the regional gas extraction standard reaching evaluation visualization system provided by the invention, the data statistics deriving module is adopted to record, derive and print the extraction standard reaching early warning information and the evaluation information, so that the difficulties of conventional writing reports and data query are reduced; modifying, adding and/or deleting related parameter attributes of the data acquisition unit by adopting a system management module so as to adapt to different requirements;
(3) According to the method provided by the invention, the data acquired by the data acquisition unit are classified and calculated by the calculation and evaluation module and then integrated into the visual interface, so that the gas extraction condition of the underground extraction area is reflected in real time, the extraction standard condition is intuitively displayed, and a site guiding basis is provided for coal mine technicians;
In summary, the regional gas extraction standard evaluation visualization system and the regional gas extraction standard evaluation method provided by the invention are used for analyzing and visualizing the regional gas extraction standard evaluation, so that the standard evaluation work is intelligentized and visualized, and the evaluation efficiency is improved.
The method is suitable for regional gas extraction standard evaluation.
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The invention will be described in more detail below with reference to the accompanying drawings and specific examples.
FIG. 1 is a block diagram of a regional gas extraction standards evaluation visualization system in accordance with an embodiment of the present invention;
in the figure: 1. a monitoring management module; 2. and a data acquisition unit.
Detailed Description
The invention is further described below in connection with the embodiments, but it will be understood by those skilled in the art that the invention is not limited to the following embodiments, and any modifications and equivalent changes based on the specific embodiments of the invention are within the scope of the claims.
Embodiment is a regional gas extraction standard reaching evaluation visualization system and method
A regional gas drainage up-to-standard evaluation visualization system comprising: the system comprises a monitoring management module 1, a calculation evaluation module, a data visualization integration module, a data statistics export module and a system management module; the monitoring management module 1 comprises a data acquisition unit 2 and a data storage unit, wherein the data acquisition unit 2 comprises a gas concentration sensor, a negative pressure sensor, a flow sensor and a temperature sensor, the data storage unit is an NAS data storage server, and the gas concentration sensor, the negative pressure sensor, the flow sensor and the temperature sensor are all connected with the NAS data storage server; the calculation evaluation module stores a drilling effective control range, drilling hole distribution uniformity evaluation, a gas extraction effect evaluation index and a gas extraction effect standard evaluation index, and the data acquisition unit 2 is connected with the data storage unit; the NAS data storage server is connected with the calculation evaluation module, the calculation evaluation module is respectively connected with the data visualization integration module and the data statistics derivation module, the system management module is respectively connected with the gas concentration sensor, the negative pressure sensor, the flow sensor and the temperature sensor, management of a user is achieved, relevant parameter attributes of the gas concentration sensor, the negative pressure sensor, the flow sensor and the temperature sensor are modified, added and/or deleted, and corresponding data are displayed.
The method of the regional gas extraction standard reaching evaluation visualization system in the embodiment comprises the following steps:
s1, a system management module manages a user, modifies, adds and/or deletes relevant parameter attributes of a gas concentration sensor, a negative pressure sensor, a flow sensor and a temperature sensor in a data acquisition unit 2, displays corresponding data, acquires data information of a region to be detected, which corresponds to corresponding drilling numbers, forms extraction standard pre-warning information, and stores the extraction standard pre-warning information to a NAS data storage server;
s2, the NAS data storage server sends the received extraction standard reaching early warning information to a calculation evaluation module, the calculation evaluation module correspondingly calculates the extraction standard reaching early warning information, compares the extraction standard reaching early warning information with a stored drilling effective control range, drilling hole distribution uniformity degree evaluation, gas extraction effect evaluation indexes and gas extraction effect standard reaching evaluation indexes, gives out corresponding evaluation information, adopts different colors for evaluation and grading, and sends the extraction standard reaching early warning information and the evaluation information to a data visualization integration module and a data statistics derivation module;
the measuring method of the effective control range of the drilling hole specifically comprises the following steps: for bedding drilling, the effective range of drilling is determined according to the control edge line in the length direction of the drilling and the connecting line of the positions of two drilling holes at the edge; for layer-penetrating drilling, the effective range of drilling is the range outlined by the connecting line between the coal-seeing points of the adjacent effective edge holes; the control edge line in the length direction of the drilling is a connecting line of effective hole depth points of the drilling, and the final hole point of a short hole in the adjacent effective drilling is used as the effective hole depth point of the adjacent drilling;
and (3) evaluating the drilling and hole distribution uniformity: after the construction of the gas drilling of the pre-pumping coal bed is finished, evaluating the uniformity degree of the gas drilling in an effective control range, wherein the distance between the pre-pumping holes is smaller than or equal to the design distance, and the areas with the same drilling distance and consistent pre-pumping time (the difference coefficient of the pre-pumping time is smaller than 30%) are divided into an evaluation unit so as to be convenient for classification and evaluation; the pre-pump time difference coefficient is as follows: And calculating, wherein eta is a pre-extraction time difference coefficient, T max is the drill extraction days with the longest pre-extraction time, and T min is the drill extraction days with the shortest pre-extraction time.
The method for measuring the gas extraction effect evaluation index specifically comprises the following steps: when the pre-gas extraction effect of the same evaluation unit is evaluated, firstly, the residual gas content or residual gas pressure and the desorbable gas quantity after extraction according to extraction metering parameters meet the expected standard index requirements, and then, the pre-gas extraction effect index, namely the working face gas extraction rate and the mine gas extraction rate, is actually measured on site; the residual gas content W CY after extraction is as followsFormula calculation, wherein W 0 is the original gas content of coal, Q is the total amount of gas pumped by a drilling hole of an evaluation unit, G is the coal reserve quantity calculated by the evaluation unit, G= (L Trend of trend -H1-H2+2R)(l-h1-h2 +R) mgamma, wherein L Trend of trend is the trend length of each layer of the evaluation unit, H 1、H2 is the equivalent width of gas pre-discharge of roadway at two ends in the trend direction of the evaluation unit, R is the effective influence radius of the pumping hole, L is the average trend length of each layer of skin in the control range of the pumping hole of the evaluation unit, H 1、h2 is the paper width of thinking gas pre-discharge and the like at two sides in the trend direction of the evaluation unit, m is the average thickness of each layer of the evaluation unit, and gamma is the density of coal of the evaluation unit. Residual gas pressure P CY after extractionPerforming back calculation, wherein W CY is residual gas content, a and b are adsorption constants, P CY is residual relative gas pressure of a coal bed, P α is standard atmospheric pressure, A d is ash content of coal, M ad is moisture of the coal, pi is porosity of the coal, and gamma is volume weight of the coal; the desorbable gas amount W j of the coal is calculated according to W j＝WCY-WCC, wherein W j is the desorbable gas amount of the coal, W CY is the residual gas content, W CC is the residual gas content of the coal under standard atmospheric pressure,Working face gas extraction rate/>According to calculation, wherein eta m is the extraction rate of a working face, Q mc is the average gas extraction amount of the working face in the month during stoping, and the measuring and calculating method comprises the steps of measuring the gas extraction amount of each gas extraction dry pipe in the working face range including ground drilling and underground extraction (including mobile extraction), measuring at least 3 times per week, and taking the sum of average values of all measured values in the month as the average gas extraction amount of the working face in the month; q mf is the air-exhaust gas amount of the working face in the current month, and the measuring and calculating method comprises the steps of subtracting the gas amount brought by all air inlets from the air-exhaust gas amount of all return air flows of the working face, taking the average value of the air-exhaust gas amount of the working face in the current day as the air-exhaust gas amount of the working face in the current month, and taking the maximum air-exhaust gas amount of the working face in the current month as the air-exhaust gas amount of the working face in the current month. Mine gas extraction rate according to/>Calculating a formula, wherein eta k is the mine extraction rate, Q kc is the average gas extraction amount of the mine in the current month, and the measuring and calculating method comprises the steps of measuring the gas extraction amount in a main extraction pipe of each gas extraction station for ground drilling extraction and underground extraction (including mobile extraction) in the field range of the well, measuring at least 12 times each day, and taking the sum of average values of all measured values in the current month as the average gas extraction amount of the mine in the current month; q kf is the air-exhaust gas amount of the mine in the current month, and the measuring and calculating method comprises the steps of taking the sum of the average values of the return air gas of all the return air wells according to the day as the air-exhaust gas amount of the mine in the current day, and taking the maximum air-exhaust gas amount in the current month as the air-exhaust gas amount of the mine in the current month.
The standard evaluation indexes of the gas extraction effect are specifically as follows: judging whether the gas extraction effect of the coal face evaluation range meets the standard according to the daily output and the desorbable gas quantity of the coal in the evaluation range, wherein the specific judgment standard is that when the daily output of the coal t epsilon (0,1000), the desorbable gas quantity W j is not more than 8m 3/t, when the daily output of the coal t epsilon (1000,2500), the desorbable gas quantity W j is not more than 7m 3/t, when the daily output of the coal t epsilon (2500,4000), the desorbable gas quantity W j is not more than 6m 3/t, when the daily output of the coal t epsilon (4000,6000), the desorbable gas quantity W j is not more than 5.5m 3/t, when the daily output of the coal t epsilon (6000,8000), the desorbable gas quantity W j is not more than 5.0m 3/t, when the daily output of the coal t epsilon (24), the desorbable gas quantity W j is not more than 6m 3/t, when the daily output of the coal t epsilon (4000,6000), when the daily output of the coal t epsilon (24) is not more than 5.5.5 m 3/t, and the specific grade of the coal is not more than 5.5m 3/t, and the specific grade green coal is evaluated when the daily output of the coal is not more than 5m green, and the grade is not more than 5m green.
TABLE 1 evaluation index of the level of the gas amount of the coal before mining of the mining face of the mining layer
For the outburst coal seam, when the residual gas pressure or the residual gas content of the coal seam measured by all measuring points in the evaluation range is smaller than the expected outburst prevention effect and reaches the standard gas pressure or gas content, and no jet hole, top drill or other power phenomenon exists in the process of construction measurement drilling, judging that the pre-extraction gas outburst prevention effect of the outburst coal seam in the evaluation range reaches the standard, otherwise, judging that the range of 100m radius with the superscript point as the circle center does not reach the standard; the expected outburst prevention effect reaches the standard gas pressure or gas content according to the gas pressure or gas content value at the coal seam outburst starting depth, and when the coal seam gas pressure or content at the coal seam outburst starting depth is not examined, the gas pressure or gas content is respectively according to 0.74MPa and 8m 3/t.
Judging that the gas pre-extraction effect of the working face meets the standard according to the absolute gas emission amount of the working face and the gas extraction rate of the working face when the gas emission amount of the working face comes from the coal face of an adjacent layer or surrounding rock, wherein the specific standard for the standard is that the absolute gas emission amount Q epsilon [5,10 ] of the working face is not less than 20% of the extraction rate eta m of the working face; when the absolute gas emission quantity Q epsilon [10,20 ] of the working face, the extraction rate eta m of the working face should not be less than 30%; when the absolute gas emission quantity Q epsilon [20,40 ] of the working face, the extraction rate eta m of the working face should be not less than 40%; when the absolute gas emission quantity Q epsilon [40,70 ] of the working face, the extraction rate eta m of the working face should be not less than 50%; when the absolute gas emission quantity Q epsilon [70,100 ] of the working face, the extraction rate eta m of the working face should be not less than 60%; when the absolute gas emission quantity Q of the working face is more than 100m 3/min, the extraction rate eta m of the working face is not less than 70%; the evaluation classification adopts red, orange, blue and green, and when the evaluation classification is green, the gas extraction of the working face evaluation range reaches the standard, and the specific table is shown in table 2.
Table 2 gas extraction rate grading evaluation index for coal face
For mine gas extraction, judging that the mine gas pre-extraction effect meets the standard according to the mine absolute gas emission quantity and the mine gas extraction rate, wherein the specific judgment standard for the standard is that when the mine absolute gas emission quantity Q is smaller than 20m 3/min, the mine extraction rate eta k is not smaller than 25%; when Q is 20, 40), the mine extraction rate eta k is not less than 35%; when Q is 40, 80), the mine extraction rate eta k is not less than 40%; when Q epsilon [80,160), the mine extraction rate eta k should not be less than 45%; when Q is epsilon [160,300), the mine extraction rate should be eta k not less than 50%; when Q is 300,500), the mine extraction rate eta k is not less than 55%; when Q is not less than 500m 3/min, the mine extraction rate eta k is not less than 60%; the evaluation classification adopts red, orange, blue and green, and when the evaluation classification is green, the mine gas extraction reaches the standard, and the concrete is shown in the table 3.
Table 3 mine gas extraction rate grading evaluation index
S3, integrating the extraction standard reaching early warning information and the evaluation information into a comprehensive visual interface by the data visual integration module, displaying the data information and the evaluation information, extracting corresponding regulation and control management commands according to different problems corresponding to the data calculated by real-time monitoring, and displaying the regulation and control management commands on the comprehensive visual interface; the data visualization integrated module is pre-stored with the control management command of the problems and solutions possibly existing in the regional extraction process; and the data statistics deriving module records the extraction standard reaching early warning information and the evaluation information, and forms an extraction early warning information recording table for deriving and printing.
Claims (5)
1. Regional gas drainage is up to standard and is evaluated visual system, characterized by including: the monitoring management module comprises a data acquisition unit and a data storage unit, wherein the calculation evaluation module stores a drilling effective control range, drilling hole distribution uniformity evaluation, gas extraction effect evaluation indexes and gas extraction effect standard evaluation indexes, the data acquisition unit comprises a gas concentration sensor, a negative pressure sensor, a flow sensor and a temperature sensor, the data storage unit is an NAS data storage server, the gas concentration sensor, the negative pressure sensor, the flow sensor and the temperature sensor are all connected with the NAS data storage server, the NAS data storage server is connected with the calculation evaluation module, the calculation evaluation module is connected with the data statistics derivation module, and the calculation evaluation module is connected with the data visualization integration module, and prestores the problems possibly existing in the regional extraction process and the regulation management command of the solution; the system management module is connected with the data acquisition unit, realizes the management of a user, modifies, adds and/or deletes related parameter attributes in the data acquisition unit, and displays corresponding data;
The effective control range of drilling is determined according to the control edge line of the drilling length direction and the connecting line of two drilling holes and drilling hole positions at the edge for the bedding drilling; for layer-penetrating drilling, the effective range of drilling is the range outlined by the connecting line between the coal-seeing points of the adjacent effective edge holes; the control edge line in the length direction of the drilling is a connecting line of effective hole depth points of the drilling, and the final hole point of a short hole in the adjacent effective drilling is used as the effective hole depth point of the adjacent drilling;
The method comprises the steps of evaluating the uniformity degree of drilling holes, evaluating the uniformity degree of gas drilling holes in an effective control range after drilling holes in a pre-drainage coal bed, wherein the pre-drainage hole spacing is smaller than or equal to a design spacing, and dividing the areas with the same hole spacing and consistent pre-drainage time into an evaluation unit so as to be convenient for classification and evaluation;
When the gas extraction effect evaluation index is used for evaluating the pre-extraction gas effect of the same evaluation unit, firstly, the pre-extraction gas effect index is actually measured on site after the residual gas content or residual gas pressure and the desorbable gas quantity after extraction according to extraction metering parameters meet the expected standard index requirement;
Judging whether the gas extraction effect meets the standard or not according to the daily output of the working face of the coal in the evaluation range and the desorbable gas quantity when the gas emission quantity comes from the coal face of the mining layer; for the outburst coal seam, when the residual gas pressure or the residual gas content of the coal seam measured by all measuring points in the evaluation range is smaller than the expected outburst prevention effect and reaches the standard gas pressure or gas content, and no jet hole, top drill or other power phenomenon exists in the process of construction measurement drilling, judging that the pre-extraction gas outburst prevention effect of the outburst coal seam in the evaluation range reaches the standard, otherwise, judging that the range of 100m radius with the superscript point as the circle center does not reach the standard; judging that the gas pre-extraction effect of the working face reaches the standard according to the absolute gas emission amount of the working face and the gas extraction rate of the working face for the coal face with the gas emission amount from the adjacent layer or surrounding rock; and for mine gas extraction, judging that the mine gas pre-extraction effect reaches the standard according to the absolute mine gas emission amount and the mine gas extraction rate.
2. The method of a regional gas extraction achievement evaluation visualization system of claim 1, comprising the steps of:
S1, a data acquisition unit acquires data information corresponding to a corresponding drilling number of a region to be detected, and extraction standard reaching early warning information is formed and stored in a data storage unit;
S2, the data storage unit sends the received extraction standard reaching early warning information to the calculation evaluation module, the calculation evaluation module correspondingly calculates the extraction standard reaching early warning information, compares the extraction standard reaching early warning information with a stored drilling effective control range, drilling hole distribution uniformity degree evaluation, gas extraction effect evaluation indexes and gas extraction effect standard reaching evaluation indexes, gives out corresponding evaluation information, adopts different colors for evaluation and grading, and sends the extraction standard reaching early warning information and the evaluation information to the data visualization integration module;
the measuring method of the effective control range of the drilling hole specifically comprises the following steps: for bedding drilling, the effective range of drilling is determined according to the control edge line in the length direction of the drilling and the connecting line of the positions of two drilling holes at the edge; for layer-penetrating drilling, the effective range of drilling is the range outlined by the connecting line between the coal-seeing points of the adjacent effective edge holes; the control edge line in the length direction of the drilling is a connecting line of effective hole depth points of the drilling, and the final hole point of a short hole in the adjacent effective drilling is used as the effective hole depth point of the adjacent drilling;
And (3) evaluating the drilling and hole distribution uniformity: after the construction of the gas drilling of the pre-drainage coal bed is finished, evaluating the uniformity degree of the gas drilling in an effective control range, wherein the distance between the pre-drainage holes is smaller than or equal to the design distance, and the areas with the same drilling distance and consistent pre-drainage time are divided into an evaluation unit so as to be convenient for classification and evaluation;
The method for measuring the gas extraction effect evaluation index specifically comprises the following steps: when the pre-gas extraction effect of the same evaluation unit is evaluated, firstly, the residual gas content or residual gas pressure after extraction according to the extraction metering parameters and the desorbable gas quantity meet the expected standard index requirements, and then, the pre-gas extraction effect index is actually measured on site;
The standard evaluation indexes of the gas extraction effect are specifically as follows: when the gas emission amount comes from the coal face of the mining layer, judging whether the gas extraction effect of the evaluation range of the coal face meets the standard according to the daily output of the coal face and the desorbable gas amount in the evaluation range; for the outburst coal seam, when the residual gas pressure or the residual gas content of the coal seam measured by all measuring points in the evaluation range is smaller than the expected outburst prevention effect and reaches the standard gas pressure or gas content, and no jet hole, top drill or other power phenomenon exists in the process of construction measurement drilling, judging that the pre-extraction gas outburst prevention effect of the outburst coal seam in the evaluation range reaches the standard, otherwise, judging that the range of 100m radius with the superscript point as the circle center does not reach the standard; judging that the gas pre-extraction effect of the working face reaches the standard according to the absolute gas emission amount of the working face and the gas extraction rate of the working face for the coal face with the gas emission amount from the adjacent layer or surrounding rock; for mine gas extraction, judging that the mine gas pre-extraction effect meets the standard according to the absolute mine gas emission amount and the mine gas extraction rate;
and S3, integrating the extraction standard reaching early warning information and the evaluation information into a comprehensive visual interface by the data visual integration module, displaying the data information and the evaluation information, and extracting corresponding regulation management commands prestored in the data visual integration module according to different problems corresponding to the real-time monitoring and calculating data and displaying the corresponding regulation management commands on the comprehensive visual interface.
3. The method according to claim 2, wherein in step S1, management of the user is implemented by the system management module, and related parameter attributes in the data acquisition unit are modified, added and/or deleted, and corresponding data are displayed, the data acquisition unit is used for modifying, adding and/or deleting related parameter attributes, acquiring data information corresponding to corresponding drilling numbers of the region to be measured, forming extraction standard reaching early warning information, and storing the extraction standard reaching early warning information in the data storage unit.
4. The method according to claim 2, wherein in step S2, the extraction standard reaching early warning information and the evaluation information are sent to the data visualization integration module and the data statistics derivation module by the calculation evaluation module.
5. The method according to claim 4, wherein in step S3, the data visualization integration module integrates the extraction standard reaching early warning information and the evaluation information into a comprehensive visualization interface, displays the data information and the evaluation information, and extracts the corresponding regulation management command prestored in the data visualization integration module to be displayed on the comprehensive visualization interface according to different problems corresponding to the data calculated by real-time monitoring; and the data statistics deriving module records the extraction standard reaching early warning information and the evaluation information, and forms an extraction early warning information recording table for deriving and printing.
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