CN113591172B - Design method of three-dimensional comprehensive gas extraction visual management system - Google Patents

Design method of three-dimensional comprehensive gas extraction visual management system Download PDF

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CN113591172B
CN113591172B CN202110393122.1A CN202110393122A CN113591172B CN 113591172 B CN113591172 B CN 113591172B CN 202110393122 A CN202110393122 A CN 202110393122A CN 113591172 B CN113591172 B CN 113591172B
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张天军
张志祥
潘红宇
宋爽
张磊
纪翔
景晨
秦斌峰
贺绥男
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Xian University of Science and Technology
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Abstract

The invention belongs to the technical field of coal and gas safety co-mining, and discloses a design method of a three-dimensional comprehensive gas extraction visual management system, which comprises the steps of reading AQ1026-2006 basic standards for coal mine gas extraction and temporary regulations for coal mine gas extraction reaching standards; investigation is carried out by combining with a gas extraction method of a production site, so that a theoretical basis is provided for system establishment; establishing a gas extraction mathematical model, a gas extraction effect evaluation model, a gas extraction pipeline graphic element model, a mobile pump gas extraction pipeline graphic element model, a gas pump graphic element model gas control valve graphic element model, and a gas extraction monitoring device model and programming; and (5) completing the design of the visual management system for gas extraction. The method is used for designing a complete and reliable visual management system for three-dimensional comprehensive gas extraction, and has the advantages of simple steps, novel and reasonable design and low manpower and material resources.

Description

Design method of three-dimensional comprehensive gas extraction visual management system
Technical Field
The invention belongs to the technical field of coal and gas safety co-production, and particularly relates to a design method of a three-dimensional comprehensive gas extraction visual management system.
Background
The prevention and treatment of the coal mine gas accidents are one of the important contents in the research field of coal mine accident prevention and treatment, and the coal mine gas extraction is the most effective and most used means for preventing and treating the gas accidents at home and abroad at present. Relevant regulations are formulated for gas extraction design and early warning by domestic relevant departments, but in actual production, because the gas extraction design and early warning and other relevant works are very complex, and the phenomena of human calculation errors and negligence easily occur in the gas extraction work, the possibility of gas accidents in a gas mine is greatly increased. Therefore, in this case, it is necessary to design a three-dimensional comprehensive gas extraction visual management system.
Disclosure of Invention
The invention aims to provide a design method of a three-dimensional comprehensive gas extraction visual management system, so as to solve the problems of manual calculation errors and negligence in the gas extraction process and reduce the occurrence of gas accidents.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a design method of a three-dimensional comprehensive gas extraction visual management system comprises the following steps:
s1, reading and researching AQ1026-2006 basic standards for coal mine gas extraction and temporary regulations for coal mine gas extraction reaching standards;
S2, researching by combining a gas extraction method of a production site, and providing a theoretical basis for system establishment;
s3, drawing a three-dimensional schematic diagram of the high-level drilling and a section diagram of the high-level drilling according to the rock property of the top plate, the hole distribution parameters and the basic information of the high-level drilling by researching a gas extraction method of a stope, a goaf and a mining influence area, and establishing a gas extraction mathematical model;
s4, establishing a gas extraction effect evaluation model according to the basic condition evaluation and the gas extraction evaluation index of the gas extraction according to AQ1026-2006 basic standard for gas extraction of coal mine and temporary rule for gas extraction of coal mine;
s5, building a gas extraction pipeline graphic element model, a mobile pump gas extraction pipeline graphic element model and a mobile pump gas extraction pipeline graphic element model by designing a permanent gas extraction pipeline graphic element, a mobile pump gas extraction pipeline graphic element and a mobile pump gas extraction pipeline graphic element, and building a gas pump graphic element model and a gas control valve graphic element model by designing a gas extraction pump graphic element and a gas control valve graphic element;
s6, establishing five sensor primitives of a temperature sensor 'C', a flow sensor 'L', a differential pressure sensor 'A', a gas sensor 'T' and a wind speed sensor 'V' to form a gas extraction monitoring device model;
S7, configuring through research and development tools, designing a starting interface, a main interface and a functional interface, setting information early warning, and programming the gas extraction mathematical model, the gas extraction effect evaluation model, the gas extraction pipeline graphic primitive model, the mobile pump gas extraction pipeline graphic primitive model, the gas pump graphic primitive model, the gas control valve graphic primitive model and the gas extraction monitoring device model built in the steps S3-S6 to finish designing the gas extraction visual management system.
As a limitation, the specific steps of step S3 include:
s31, calculating the height H of the caving zone according to the rock property of the roof by researching a gas extraction method of a stope face, a goaf and a mining influence area m Fracture zone height H li Is a value of (2);
s32, according to the height H of the collapse zone m Fracture zone height H li Calculating the distance H between the final hole position and the vertical direction of the coal seam floor Final hole ；
Wherein,
s33, calculating the values of the height H of the final hole position to the coal seam floor, the deflection angle alpha of the high-level drilling, the elevation angle beta of the high-level drilling and the length L of the high-level drilling in the vertical direction according to the hole distribution parameters and the basic information of the high-level drilling, and drawing a three-dimensional schematic diagram of the high-level drilling;
S34, calculating the effective length L of the single high-order drilling hole Effective and effective Effective advance length L of stope face Propulsion of And drawing a gas extraction high-level drilling section diagram and establishing a gas extraction mathematical model according to the value of the space S between high-level drilling sites.
As a second limitation, in step S31, the roof rock includes hard rock, medium hard rock, weak rock, extremely weak rock;
wherein, the calculation formulas of the height of the collapse zone and the height of the fracture zone of the hard rock are respectively as follows:
the calculation formulas of the height of the collapse zone and the height of the fracture zone of the medium hard rock are respectively as follows:
the calculation formulas of the height of the collapse zone and the height of the fracture zone of the weak rock are respectively as follows:
the calculation formulas of the height of the collapse zone and the height of the fracture zone of the extremely weak rock are respectively as follows:
where M represents the face mining height.
As a third limitation, in step S33, a calculation formula of the height H of the final hole position to the coal seam floor in the vertical direction is:
H＝H final hole -h；
H is the height of the high-level drilling hole, namely the height of the high-level drilling hole from the coal seam floor;
the calculation formula of the deflection angle alpha of the high-order drilling is as follows:
wherein X is the distance from the final position to the open hole position along the trend direction of the coal seam, and Y is the distance from the final position to the return airway along the trend direction of the coal seam;
The calculation formula of the elevation angle beta of the high-order drilling hole is as follows:
the calculation formula of the high-order drilling length L is as follows:
or->
As a fourth limitation, in step S34, the effective length L of the single high-order borehole Effective and effective The calculation formula of (2) is as follows:
effective advance length L of stope face Propulsion of The calculation formula of (2) is as follows:
wherein, gamma is the included angle of the return air cis-slot relative to the horizontal plane;
the calculation formula of the space S between high-order drilling sites is as follows:
as a fifth limitation, the specific steps of step S4 include:
s41, according to AQ1026-2006 basic Standard for gas extraction of coal mine and temporary regulations for gas extraction of coal mine, according to basic condition evaluation and evaluation index of gas extraction, the calculation and evaluation unit participates in calculating coal reserves G and residual gas content W of coal after gas extraction CY Residual relative gas pressure P of coal CY Analyzable gas quantity W j Gas extraction rate eta of coal face m Mine gas extraction rate eta k Estimated achievable gas extraction quantity Q 1 ；
S42, calculating the pre-extraction gas quantity Q before mining y Is the value of (1) and the gas extraction quantity Q during the mining c The value of (1) and the goaf gas extraction quantity Q k Is a value of (2);
s43, establishing a gas extraction effect evaluation model according to the data obtained by calculation in the steps S41 and S42, and judging whether the gas extraction amount meets the requirement of meeting the gas extraction standard.
As a sixth limitation, in step S41,
the evaluation unit participates in calculating the calculation formula of the coal reserves as follows:
G＝(L a -H 1 -H 2 +2R)(l-h 1 -h 2 +R)mλ；
wherein L is a For evaluating the trend length of the unit coal seam, l is the average trend length of the coal seam in the control range of the extraction drilling of the evaluation unit, H 1 、H 2 Respectively the gas pre-discharging equivalent width of the lanes at the two ends of the direction of the evaluation unit, and if no lane exists, the gas pre-discharging equivalent width is 0 h 1 、h 2 The gas pre-drainage equivalent widths of the roadways on the two sides of the inclined direction of the evaluation unit are respectively 0 if no roadway exists, R is the effective influence radius of the extraction drilling hole, m is the average coal seam thickness of the evaluation unit, and lambda is the density of the coal of the evaluation unit;
the calculation formula of the residual gas content of the coal after gas extraction is as follows:
wherein W is CY Is the residual gas content of coal, W 0 The method comprises the steps that (1) the raw gas content of coal is represented by Q, the total amount of gas pumped and discharged by drilling of an evaluation unit is represented by Q, and the coal reserves are calculated by G;
the calculation formula of the residual relative gas pressure of the coal is as follows:
wherein a and b are adsorption constants; p (P) CY For residual relative gas pressure of coal seam, P a Is at standard atmospheric pressure, A d Is the ash content of coal, M ad Is the moisture of the coal, pi is the porosity of the coal, and theta is the volume weight of the coal;
the calculation formula of the resolvable gas amount is as follows:
W j ＝W CY -W CC ；
wherein W is j Is the desorption gas quantity of coal, W CC Is the residual gas content of the coal under the standard atmospheric pressure,
the calculation formula of the gas extraction rate of the coal face is as follows:
wherein eta m For gas extraction rate of coal face, Q mc The average gas extraction amount of the working face in the current month in the stoping period is Qmf, and the gas amount of the working face in the current month is discharged by wind;
the calculation formula of the mine gas extraction rate is as follows:
wherein eta k For mine gas extraction rate, Q kc Average gas extraction quantity of mine in current month, Q kf The air exhaust gas amount of the mine in the current month;
the calculation formula of the expected gas extraction amount is as follows:
Q 1 ＝Q y +Q c +Q k ；
wherein Q is 1 To predict the achievable gas extraction, Q y To pre-extract gas quantity before mining, Q c The gas extraction amount during the mining comprises the gas extraction amount of the coal seam, the gas extraction amount of the upper and lower adjacent layers and surrounding rock continuously pre-extracted during the mining of the stoping face, the gas extraction amount during the digging of a coal roadway, and the gas extraction amount during the driving of the coal roadway, Q k The gas quantity is extracted from the goaf, including the gas quantity of the existing goaf and the old goaf.
As a seventh limitation, in step S42, the calculation formula of the pre-extraction gas amount before mining is:
Q y ＝∑Q h +∑Q j +∑Q s ；
in which Q h For pre-pumping gas quantity of coal seam section or working face recovery area, Q j For pre-pumping the gas quantity of the coal roadway strip, Q s The gas quantity of the coal uncovering area of the pre-pumping cross-cut is as follows;
in the formula, the calculation formula of the gas quantity of the pre-extracted coal seam section or the working face recovery area is as follows:
wherein K is 1 Taking 1.05 to 1.20 percent of gas extraction imbalance coefficient when a coal seam section or a working face extraction area is pre-extracted, taking 1.50 to 2.00 percent of coal roadway strips or a cross cut coal uncovering area, taking 1.20 to 1.50 percent of surrounding rock pressure relief gas when adjacent layers and surrounding rock pressure relief gas are extracted, and L 1 For pre-extracting the width of coal seam section or working face recovery area, L 2 For the length of the section or the stope face of the pre-extracted coal bed, M is the average thickness of the pre-extracted coal bed, eta is the apparent density of the coal, and W 1 The pre-pumping gas content reaches the standard, and t is the pre-pumping time;
the calculation formula of the gas quantity of the strip of the pre-drainage coal roadway is as follows:
Q j ＝q h ×L k ；
wherein q h Average extraction amount for coal hole section of through-layer drilling or hundred meter drilling of down-layer drilling, L k The total length of the coal hole section for the layer-penetrating drilling or the total length of the bedding drilling;
the calculation formula of the gas quantity of the pre-pumping cross-cut coal uncovering area is as follows:
wherein T is the effective control area of the drilling hole;
the calculation formula of the gas extraction amount during the mining is as follows:
Q c ＝∑Q bc +∑Q yc ；
in which Q bc For the pre-pumping quantity of the coal bed during the stoping of the working face, Q yc The pressure relief gas extraction amount for the adjacent layers and surrounding rock during the working face recovery period;
The calculation formula of the pre-pumping amount of the coal seam during the working face stoping is as follows:
Q bc ＝Q h ×K c ；
wherein K is c Taking 0.3-0.5 for the ratio of the pre-extraction amount of the coal seam to the extraction amount in the pre-extraction period in the working face extraction period;
the calculation formula of the pressure relief gas extraction amount of the adjacent layer and the surrounding rock during the working face extraction period is as follows:
wherein L is 3 To stope face width, L 4 To the annual push progress length of the stope face, m j Is adjacent to the coal layer in thickness eta j K is the gas emission rate of the adjacent layer y For the pressure relief gas extraction rate of adjacent layers, W 0 Is the original gas content of coal, W c Residual gas content of the coal seam;
the calculation formula of the goaf gas extraction amount is as follows:
Q k ＝∑Q xk +∑Q lk ；
in which Q xk Is the gas extraction quantity of the existing goaf, Q ck The gas extraction amount is the old goaf;
in step S43, when Q 2 ≥Q×η k When the gas extraction amount meets the requirement of reaching the standard of gas extraction;
wherein Q is 2 In order to extract the gas extraction quantity meeting the requirements, Q is the absolute gas emission quantity, eta k The method is the gas extraction rate of the mine.
As an eighth limitation, step S7 is to develop tool configuration, design a start interface, a main interface, a functional interface, and set specific steps of information early warning:
s71, research and development tool configuration
S711, selecting ObjectARX2010 and Visual Studio 2008 to develop AutoCAD 2010 and configure the development environment required by ObjectARX;
S712, installing a visual studio2008 SP1 patch;
s713, downloading ObjectARX2010SDK from the ObjectARX network under the condition that the compiler operates normally, decompressing and installing the ObjectARX2010SDK into a specified directory;
s714, setting a global inclusion file and a library file;
s715, selecting a choice in a tool menu bar of a VS2008, selecting a 'containing file', adding two catalogs of 'inc' and 'inc-win 32' under an installation catalog, and setting sixty-four development platforms in the same way;
s716, selecting a choice in a tool menu bar of the VS2008, selecting a library file, adding a list of lib-win32 under an installation directory, and setting a sixty-bit development platform in the same way;
s717, qt4.8 is selected as a development tool, and the environment setting is the same as ObjectARX;
s72, designing a starting interface
S721, acquiring an installation catalog of CAD, and searching and backing up acad.CUIx and acad.mnr files;
s722, copying corresponding acad.CUIx and acad.mnr files under the program running directory to the CAD installation directory to realize automatic loading of the acad.CUIx files;
s723, reading an 'applications' item of a CAD registry, adding a 'GADS' item under the catalog, establishing a subitem of 'LOADCTRRS' with the type REG_DWORD, setting the value of the subitem to be '2', establishing a subitem of 'LOADER' with the type REG_SZ, and setting the value of the subitem to be 'VVLoader.arx';
S724, using a function loadModule in ObjectARX in the VVLoader project to realize automatic loading of files of other modules arx;
s725, designing a start CAD button and a CAD file opening button by a start interface to realize the start of a CAD program and the modification of a stored file;
s73, designing a main interface
S731, creating a pull-down menu by using a CUI editor, wherein the pull-down menu comprises files, autoCAD, primitive drawing, primitive editing, high-order drilling basic information, gas extraction basic condition evaluation, gas extraction evaluation index calculation, gas extraction design assistant, output report and auxiliary functions;
s732, creating a toolbar corresponding to the drop-down menu through a custom column in a CUI editor of the CAD;
s733, creating an independent working space;
s734, setting double-click actions of all the primitives in the custom interface;
s735, selecting and storing in the CUI editor, and copying the related files for use;
s74, designing a functional interface
S741, adding a "Dialog" resource in the VVLoader item, adding a "Button Control" Control and a "PictureControl" Control, setting the ID of PictureControl as IDC_PROP_POS, creating a CMFCPropertyGridCtrl Control at the position, searching the position of the ID as IDC_PROPERTY_GRID, and finishing the creation of the attribute data interface by passing through the CMFCPropertyGridProperty Control;
S742, responding to double-click of the CMFCPropertyGridCtr control by reloading the OnDblCIk () function of the CMFCPropertyGridGredCtr control, calculating a value corresponding to the CMFCPropertyGridCtr control, inputting or calculating a value of high-order drilling basic information, clicking to determine, writing data into a 'calculation parameter' global object, and completing creation of a high-order drilling basic information interface;
s743, adding dialogue box resources in the project of the compiler, adding RichEdit2 controls, setting the ID of the first RichEdit2 control as IDC_RICHEDIT2_LOCATION, setting the ID of the second RichEdit2 control as IDC_RICHEDIT2_NUM, and completing the creation of a working face summary interface;
s744, creating a calculation interface comprising high-order drilling basic information, gas extraction basic condition evaluation and gas extraction evaluation indexes, and editing and modifying the result obtained by calculation cannot be performed;
s75, setting information early warning
S751, comparing relevant information calculated by gas extraction basic condition evaluation and gas extraction evaluation indexes with preset expected information;
s752, if the expected information is met, not sending an alarm and control instruction; otherwise, the red alarm and control instruction is sent to the action executing mechanism to realize the adjustment control of the action executing mechanism.
As a ninth limitation, the graphic elements in the graphic element drawing and graphic element editing include a permanent gas extraction pipeline graphic element, a mobile pump gas extraction pipeline graphic element, a gas extraction pump graphic element, a gas control valve graphic element, and five sensor graphic elements including a temperature sensor "C", a flow sensor "L", a differential pressure sensor "a", a gas sensor "T" and a wind speed sensor "V".
Compared with the prior art, the technical proposal adopted by the invention has the following technical progress:
(1) The invention forms a complete and reliable three-dimensional comprehensive gas extraction visual management system on the basis of gas extraction mathematical modeling, gas extraction effect evaluation modeling, gas extraction accessory device modeling and gas extraction monitoring device modeling, and has the advantages of simple steps, novel and reasonable design and small manpower and material resources;
(2) The invention adopts a method for establishing a mathematical model of the high-order drilling, and the obtained high-order drilling deflection angle, the elevation angle of the high-order drilling, the length of the high-order drilling and the interval parameters between high-order drilling sites can avoid inaccuracy caused by the fact that most of mines select drilling parameters according to experience at present;
(3) The invention adopts the method of adding the calculation interface in the functional interface of the visual system, thereby realizing the calculation of drilling parameters, gas pump selection and gas extraction evaluation indexes by the system, improving the calculation speed and avoiding errors caused by manual calculation;
(4) The three-dimensional comprehensive gas extraction visual management system studied by the invention not only comprises a mine gas extraction technology, but also comprises a mine gas extraction effect evaluation modeling, so that the method disclosed by the invention can not only contribute to the research of the gas extraction method, but also contribute to the evaluation of the gas extraction effect;
(5) The invention has strong practicability, wide application range and high popularization and application value.
In summary, the method has the advantages of simple steps, novel and reasonable design, less manpower and material resources, realization of intelligent decision and prediction functions of gas extraction, avoidance of complicated manual data acquisition and complex calculation work, realization of auxiliary tools for gas extraction design and daily management work, reduction of gas accidents to a great extent, great significance for research on coal and gas safety co-extraction, strong practicability, wide application range and high popularization and application value.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a three-dimensional schematic of a high-level borehole of the present invention;
FIG. 3 is a cross-sectional view of a gas extraction high-level borehole of the present invention;
FIG. 4 is a permanent gas extraction pipeline primitive model in the gas extraction pipeline primitive modeling of the present invention;
FIG. 5 is a diagram of a mobile pump gas extraction pipeline primitive model in the gas extraction pipeline primitive modeling of the present invention;
FIG. 6 is a diagram of a mobile pump drainage gas extraction pipeline primitive model in the modeling of the gas extraction pipeline primitive of the present invention;
FIG. 7 is a gas pump primitive model obtained by modeling the gas extraction pump primitive of the present invention;
FIG. 8 is a valve primitive model obtained by modeling a gas control valve primitive of the present invention;
FIG. 9 is a graphical element modeling of a gas extraction sensor of the present invention showing a sensor model without data display or failure;
FIG. 10 is a graphical element modeling of a gas extraction sensor of the present invention to provide a sensor model with data display.
Detailed Description
The invention is further described below in connection with examples, but it will be understood by those skilled in the art that the invention is not limited to the following examples, and that any modifications and variations based on the specific examples of the invention are within the scope of the appended claims.
Embodiment design method of three-dimensional comprehensive gas extraction visual management system
As shown in fig. 1, the present embodiment includes the steps of:
s1, reading and researching AQ1026-2006 basic standards for coal mine gas extraction and temporary regulations for coal mine gas extraction reaching standards;
s2, researching by combining a gas extraction method of a production site, and providing a theoretical basis for system establishment;
s3, drawing a three-dimensional schematic diagram of the high-level drilling and a section diagram of the high-level drilling according to the rock property of the top plate, the hole distribution parameters and the basic information of the high-level drilling by researching a gas extraction method of a stope, a goaf and a mining influence area, and establishing a gas extraction mathematical model;
the specific content of the step comprises the following steps:
s31, calculating the height H of the caving zone according to the rock property of the roof by researching a gas extraction method of a stope face, a goaf and a mining influence area m Fracture zone height H li Is a value of (2);
in this step, the roof rock includes hard rock, medium hard rock, weak rock, and extremely weak rock; calculating the height H of the collapse zone according to the rock property of the top plate m Fracture zone height H li The values of (1) are calculated according to a calculation formula shown in table 1, wherein the rock properties of the roof are determined according to the single compressive strength of the rock mass and the main rock names shown in table 2;
TABLE 1
Wherein M in Table 1 represents the face mining height;
TABLE 2
S32, according to the height H of the collapse zone m Fracture zone height H li Calculating the distance H between the final hole position and the vertical direction of the coal seam floor Final hole ；
Wherein,
the high-order drilled terminal holes are generally arranged in the fracture zone, so the determination of the height of the terminal holes requires the determination of the height H of the collapse zone m Fracture zone height H li ；
S33, calculating the values of the height H of the final hole position to the coal seam floor, the deflection angle alpha of the high-level drilling, the elevation angle beta of the high-level drilling and the length L of the high-level drilling in the vertical direction according to the hole distribution parameters and the basic information of the high-level drilling, and drawing a three-dimensional schematic diagram of the high-level drilling;
in this step, the calculation formula of the height H from the final hole position to the coal seam floor in the vertical direction is:
H＝H final hole -h；
H is the height between the high-level drilling hole position and the coal seam bottom plate;
the calculation formula of the deflection angle alpha of the high-order drilling is as follows:
wherein X is the distance from the final position to the open hole position along the trend direction of the coal seam, and Y is the distance from the final position to the return airway along the trend direction of the coal seam;
the calculation formula of the elevation angle beta of the high-order drilling hole is as follows:
the calculation formula of the high-order drilling length L is as follows:
or->
In the step, a three-dimensional schematic drawing of the high-level drilling hole is shown in fig. 2, wherein an xoy plane is parallel to a coal seam plane, an X-axis direction is a coal seam trend direction, a Y-axis direction is a coal seam trend direction, an air return roadway is parallel to the X-axis, X is a distance from a final hole position to an opening position along the coal seam trend direction, Y is a distance from the final hole position to the air return roadway along the coal seam trend direction, alpha is an included angle between projection of the high-level drilling hole on a horizontal plane and an axis of the air return roadway, namely an offset angle of the high-level drilling hole, beta is an included angle between projection of the high-level drilling hole and the high-level drilling hole on the horizontal plane, namely an elevation angle of the high-level drilling hole, and H is a height from the final hole position to a coal seam bottom plate in a vertical direction;
S34, calculating the effective length L of a single high-order drilling hole Effective and effective Effective advance length L of stope face Propulsion of The value of the space S between high-level drilling sites, drawing a gas extraction high-level drilling section diagram, and establishing a gas extraction mathematical model; wherein, the section view of the gas extraction high-level drilling hole is shown in figure 3;
in this step, the effective length L of a single high-order borehole Effective and effective The calculation formula of (2) is as follows:
effective advance length L of stope face Propulsion of The calculation formula of (2) is as follows:
wherein, gamma is the included angle of the return air cis-slot relative to the horizontal plane;
the calculation formula of the space S between high-order drilling sites is as follows:
s4, establishing a gas extraction effect evaluation model according to the basic condition evaluation and the gas extraction evaluation index of the gas extraction according to AQ1026-2006 basic standard for gas extraction of coal mine and temporary rule for gas extraction of coal mine;
the specific steps of the method comprise:
s41, according to AQ1026-2006 basic Standard for gas extraction of coal mine and temporary regulations for gas extraction of coal mine, according to basic condition evaluation and evaluation index of gas extraction, the calculation and evaluation unit participates in calculating coal reserves G and residual gas content W of coal after gas extraction CY Residual relative gas pressure P of coal CY Analyzable gas quantity W j Gas extraction rate eta of coal face m Mine gas extraction rate eta k Estimated achievable gas extraction quantity Q 1 ；
In the step, the evaluation unit participates in calculating a calculation formula of the coal reserves as follows:
G＝(L a -H 1 -H 2 +2R)(l-h 1 -h 2 +R)mλ；
wherein L is a For evaluating the trend length of the unit coal seam, l is the average trend length of the coal seam in the control range of the extraction drilling of the evaluation unit, H 1 、H 2 Respectively the gas pre-discharging equivalent width of the lanes at the two ends of the direction of the evaluation unit, and if no lane exists, the gas pre-discharging equivalent width is 0 h 1 、h 2 The gas pre-drainage equivalent widths of the roadways on the two sides of the inclined direction of the evaluation unit are respectively 0 if no roadway exists, R is the effective influence radius of the extraction drilling hole, m is the average coal seam thickness of the evaluation unit, and lambda is the density of the coal of the evaluation unit;
in this step, H 1 、H 2 、h 1 、h 2 The method is determined according to actual measurement data of the mine;
the calculation formula of the residual gas content of the coal after gas extraction is as follows:
wherein W is CY Is the residual gas content of coal, W 0 The method comprises the steps that (1) the raw gas content of coal is represented by Q, the total amount of gas pumped and discharged by drilling of an evaluation unit is represented by Q, and the coal reserves are calculated by G;
the calculation formula of the residual relative gas pressure of the coal is as follows:
wherein a and b are adsorption constants; p (P) CY For residual relative gas pressure of coal seam, P a For standard atmospheric pressure, 0.101325MPa, A d Is the ash content of coal, M ad Is the moisture of the coal, pi is the porosity of the coal; θ is the volume weight of the coal;
the calculation formula of the resolvable gas amount is as follows:
W j ＝W CY -W CC ；
wherein W is j Is the desorption gas quantity of coal, W CC Is the residual gas content of the coal under the standard atmospheric pressure;
the calculation formula of the gas extraction rate of the coal face is as follows:
wherein eta m For coal miningWorking face gas extraction rate, Q mc For the average gas extraction quantity of the working face in the same month during the stoping period, Q mf The air exhaust gas amount of the working face in the current month;
in this embodiment, the average gas extraction amount Q is the same as the working face of the month during the recovery period mc The measuring and calculating method of (1) is as follows: the gas extraction detection and monitoring device is arranged on each gas extraction dry pipe in the range of the working face, including ground drilling and underground extraction (including mobile extraction), the measurement is carried out at least three times per week, and the average value sum of the measurement values is taken as the average gas extraction amount (pure gas amount under standard state) of the working face in the same month;
air-exhaust gas quantity Q of working face in the same month mf The measuring and calculating method of (1) is as follows: subtracting the gas amount brought by all air inlet flows from the gas amount discharged by all return air flows of the working face, taking a daily average value as the air gas amount (pure gas amount in a standard state) of the working face extracted on the same day, and taking the air gas amount of the working face extracted on the largest day in the current month as the air gas amount (pure gas amount in the standard state) of the working face extracted on the same month;
The calculation formula of the mine gas extraction rate is as follows:
wherein eta k For mine gas extraction rate, Q kc Average gas extraction quantity of mine in current month, Q kf The air exhaust gas amount of the mine in the current month;
in this embodiment, the average gas extraction amount Q of the mine in the current month kc The measurement and calculation method of (1) is as follows: the method comprises the steps that a gas extraction detection device and a monitoring device are installed on a main extraction pipe of each gas extraction station for ground drilling extraction and underground extraction (including mobile extraction) in a well field range, the measurement is carried out for at least twelve times per day, and the sum of average values of measurement values is the average gas extraction amount (pure gas amount under standard state force) of a mine in the same month;
air-exhaust gas quantity Q of mine in current month kf The measurement and calculation method of (1) is as follows: taking the sum of the average values of return air gas of all return air wells as the air exhaust gas amount of the mine in the same day according to the day, and taking the maximum air exhaust of one day in the same monthThe gas amount is the air exhaust gas amount of the mine in the current month;
the calculation formula of the expected gas extraction amount is as follows:
Q 1 ＝Q y +Q c +Q k ；
wherein Q is 1 To predict the achievable gas extraction, Q y To pre-extract gas quantity before mining, Q c For the gas extraction during the mining, including the continuous pre-extraction of the gas extraction of the coal seam, the pressure relief gas extraction of the upper and lower adjacent layers and surrounding rock during the mining of the stoping face, the gas extraction during the digging of the coal roadway, and the like, Q k Extracting gas quantity for the goaf, including the gas quantity of the existing goaf and the old goaf;
s42, calculating the pre-extraction gas quantity Q before mining y Is the value of (1) and the gas extraction quantity Q during the mining c The value of (1) and the goaf gas extraction quantity Q k Is a value of (2);
in the step, the calculation formula of the pre-extraction gas quantity before mining is as follows:
Q y ＝∑Q h +∑Q j +∑Q s ；
in which Q h For pre-pumping gas quantity of coal seam section or working face recovery area, Q j For pre-pumping the gas quantity of the coal roadway strip, Q s The gas quantity of the coal uncovering area of the pre-pumping cross-cut is as follows;
the calculation formula of the gas quantity of the pre-extracted coal seam section or the working face recovery area is as follows:
wherein K is 1 Taking 1.05 to 1.20 percent of gas extraction imbalance coefficient when a coal seam section or a working face extraction area is pre-extracted, taking 1.50 to 2.00 percent of coal roadway strips or a cross cut coal uncovering area, taking 1.20 to 1.50 percent of surrounding rock pressure relief gas when adjacent layers and surrounding rock pressure relief gas are extracted, and L 1 For pre-extracting the width of coal seam section or working face recovery area, L 2 For the length of the section or the stope face of the pre-extracted coal bed, M is the average thickness of the pre-extracted coal bed, eta is the apparent density of the coal, and W 1 The pre-pumping gas content reaches the standard, and t is the pre-pumping time;
in this embodiment, the pre-pumping gas content W reaches the standard 1 For an outburst coal seam, pre-extracting standard gas content takes a value according to the gas content at the initial outburst depth of the coal seam, when the gas content of the coal seam at the initial outburst depth of the coal seam is not examined, pre-extracting standard gas content takes eight, the gas emission mainly comes from the coal face of the coal seam, the desorbable gas content takes a value according to a table 3 when the pre-extracting standard gas content reaches the standard, and the pre-extracting standard gas content mainly comes from the coal face of the outburst coal seam and meets the two requirements simultaneously;
TABLE 3 Table 3
The calculation formula of the gas quantity of the strip of the pre-drainage coal roadway is as follows:
Q j ＝q h ×L k ；
wherein q h Average extraction amount for coal hole section of through-layer drilling or hundred meter drilling of down-layer drilling, L k The total length of the coal hole section for the layer-penetrating drilling or the total length of the bedding drilling;
the calculation formula of the gas quantity of the pre-pumping cross-cut coal uncovering area is as follows:
wherein T is the effective control area of the drilling hole;
the calculation formula of the gas extraction amount during the mining is as follows:
Q c ＝∑Q bc +∑Q yc ；
in which Q bc For the pre-pumping quantity of the coal bed during the stoping of the working face, Q yc Pressure relief for adjacent layers and surrounding rock during face recoveryGas extraction amount;
the calculation formula of the pre-pumping amount of the coal seam during the working face stoping is as follows:
Q bc ＝Q h ×K c ；
wherein K is c Taking 0.3-0.5 for the ratio of the pre-extraction amount of the coal seam to the extraction amount in the pre-extraction period in the working face extraction period;
the calculation formula of the pressure relief gas extraction amount of the adjacent layer and the surrounding rock during the working face extraction period is as follows:
wherein L is 3 To stope face width, L 4 To the annual push progress length of the stope face, m j Is adjacent to the coal layer in thickness eta j K is the gas emission rate of the adjacent layer y For the pressure relief gas extraction rate of adjacent layers, W 0 Is the original gas content of coal, W c Residual gas content of the coal seam;
in this embodiment, the adjacent layer is relieved of pressure and gas extraction rate K y The values of (2) are as follows: when adopting the drainage of the through-layer drilling holes, according to the number of the through-layer drilling holes, the distance between the final drilling holes and the range of the drilling holes control pressure relief area, 20% -80% of the gas emission quantity of the adjacent layer is taken, and when adopting the drainage of the high-position drilling holes, 20% -60% of the gas emission quantity of the adjacent layer is taken;
The calculation formula of the goaf gas extraction amount is as follows:
Q k ＝∑Q xk +∑Q lk ；
in which Q xk Is the gas extraction quantity of the existing goaf, Q ck The gas extraction amount is the old goaf;
s43, the data obtained by calculation in the steps S41 and S42, namely, the evaluation unit participates in calculation of the coal reserves G and the residual gas content W of the coal after gas extraction CY Residual relative gas pressure P of coal CY Analyzable gas quantity W j Gas extraction rate eta of coal face m Mine gas extraction rate eta k Estimated achievable gas extraction quantity Q 1 Pre-pumping gas quantity Q before digging y Is the value of (1) and the gas extraction quantity Q during the mining c The value of (1) and the goaf gas extraction quantity Q k Establishing a gas extraction effect evaluation model, and judging whether the gas extraction quantity meets the requirement of reaching the standard of gas extraction;
in this step, when Q 2 ≥Q×η k When the gas extraction amount meets the requirement of reaching the standard of gas extraction;
wherein Q is 2 In order to extract the gas extraction quantity meeting the requirements, Q is the absolute gas emission quantity, eta k The gas extraction rate of the mine is;
in this embodiment, the mine gas extraction rate η k Satisfy table 4;
TABLE 4 Table 4
S5, building a gas extraction pipeline graphic element model, a mobile pump gas extraction pipeline graphic element model and a mobile pump gas extraction pipeline graphic element model by designing a permanent gas extraction pipeline graphic element, a mobile pump gas extraction pipeline graphic element and a mobile pump gas extraction pipeline graphic element, and building a gas pump graphic element model and a gas control valve graphic element model by designing a gas extraction pump graphic element and a gas control valve graphic element;
The specific steps in the method are as follows:
s51, establishing a gas extraction pipeline graphic element model, a mobile pump gas extraction pipeline graphic element model and a mobile pump gas extraction pipeline graphic element model by designing a permanent gas extraction pipeline graphic element, a mobile pump gas extraction pipeline graphic element and a mobile pump gas extraction pipeline graphic element;
s511, designing a permanent GAS extraction pipeline graphic element, setting a graphic element LINE type standard to be selected from AutoCAD self-carrying LINE type standard, setting the LINE type proportion to be 1.0, setting the shape to be a straight LINE, setting the index color to be 130, setting the LINE type control to be GAS_LINE, setting the LINE width to be 0.4mm, and setting up a GAS extraction pipeline graphic element model; wherein, the permanent gas extraction pipeline graphic element in the gas extraction pipeline graphic element model is shown in figure 4;
s512, designing a graphic element of the mobile gas pumping and extracting pipeline, setting a graphic element line type standard to be selected from AutoCAD self-carrying line type standard, setting the line type proportion to be 1.0, setting the shape to be a straight line, setting the index color to be 166, setting the line type control to be ByLayer, setting the line width to be 0.4mm, and setting up a graphic element model of the mobile gas pumping and extracting pipeline; wherein, the graphic element of the mobile pump gas extraction pipeline is shown in figure 5;
s513, designing a graphic element of the gas extraction pipeline of the mobile pump, setting a graphic element line type standard to be selected from the AutoCAD self-carrying line type standard, setting the line type proportion to be 1.0, setting the shape to be a straight line, setting the index color to be 232, setting the line type control to be ACAD_IS003W100, setting the line width to be 0.4mm, and establishing a graphic element model of the gas extraction pipeline of the mobile pump; wherein, the graphic element of the gas extraction pipeline of the mobile pump is shown in figure 6;
S52, establishing a gas pump graphic element model and a gas control valve graphic element model by designing a gas extraction pump graphic element and a gas control valve graphic element;
s521, designing a gas extraction pump graphic element and establishing a gas pump graphic element model; the gas extraction pump graphic element is shown in fig. 7, wherein the gas extraction pump graphic element consists of a circle and a trapezoid-like shape, a straight line passing through the center of the circle and an o point is the symmetry axis of the graphic element, the radius of the circle is R, and the lengths of the line segments AC and BD are R 1 The length of the line segment CD is L b Angle ACD and angle BDC are alpha 1 The coordinates of the point o in the plane rectangular coordinate system are (x o ，y o ) From this, the coordinates of point A can be found to be [ ]y 0 +r 1 sinα 1 ) The coordinates of point B are (++>y 0 +r 1 sinα 1 ) The coordinates of point C are (++>y 0 ) The coordinates of point D are (++>y 0 )；
522, designing a gas control valve graphic element and establishing a gas control valve graphic element model; as shown in FIG. 8, the gas control valve graphic element consists of two circles with equal radius and two line segments with equal length, the two circles are circumscribed and the line segments EG and FI are respectively tangent with the upper part and the lower part of the circles, and the radius of the circles is R 1 The length of the line segments EG and FI is 2R 1 Point o 1 The coordinates in the plane rectangular coordinate system are (x o1 ，y o1 )；
Finally establishing a gas pump graphic element model and a gas control valve graphic element model by designing the gas extraction pump graphic element and the gas control valve graphic element;
S6, establishing five sensor primitives of a temperature sensor 'C', a flow sensor 'L', a differential pressure sensor 'A', a gas sensor 'T' and a wind speed sensor 'V' to form a gas extraction monitoring device model;
all sensors in this step are modeled as a circle and a letter representing the sensor type, and all sensor primitive circles have a radius R 2 The display color is blue, the sensor display font is TimesNewRoman, as shown in FIG. 9; when data is detected, the sensor graphic primitive will display data not exceeding a circle under the sign letters, as shown in fig. 10;
s7, configuring through research and development tools, designing a starting interface, a main interface and a functional interface, setting information early warning, and programming the gas extraction mathematical model, the gas extraction effect evaluation model, the gas extraction pipeline graphic primitive model, the mobile pump gas extraction pipeline graphic primitive model, the gas pump graphic primitive model, the gas control valve graphic primitive model and the gas extraction monitoring device model built in the steps S3-S6 to finish designing a gas extraction visual management system;
in the step, the research and development tool configuration is carried out, a starting interface, a main interface and a functional interface are designed, and the specific steps of information early warning are set as follows:
S71, research and development tool configuration
S711, selecting ObjectARX2010 and Visual Studio 2008 to develop AutoCAD 2010 and configure the development environment required by ObjectARX; because the versions of AutoCAD are different, each CAD version has a corresponding ObjectARXSDK version corresponding to the version, and different ObjectARX SDK versions need to correspond to different IDEs to work normally, and the configuration development environment is comprehensively considered to select the versions;
s712, installing a Visual Studio 2008 SP1 patch;
s713, downloading ObjectARX2010SDK from the ObjectARX network under the condition that the compiler operates normally, decompressing and installing the ObjectARX2010SDK into a specified directory;
s714, setting a global inclusion file and a library file;
s715, selecting a choice in a tool menu bar of a VS2008, selecting a 'containing file', adding two catalogs of 'inc' and 'inc-win 32' under an installation catalog, and setting sixty-four development platforms in the same way;
s716, selecting a choice in a tool menu bar of the VS2008, selecting a library file, adding a list of lib-win32 under an installation directory, and setting a sixty-bit development platform in the same way;
s717, selecting Qt4.8 as a development tool, wherein the setting of the environment is the same as that of ObjectARX; qt4.8 contains a plurality of C++ types and template types, and meets the development requirement of a gas extraction visual management system;
The embodiment saves development consumption by carrying out secondary development on the AutoCAD drawing tool with the widest application in the field of coal mines, improves development efficiency, and enables coal mine technicians to master and accept the AutoCAD drawing tool to a certain extent compared with other technical means;
s72, designing a starting interface
S721, acquiring an installation catalog of CAD, and searching and backing up acad.CUIx and acad.mnr files;
s722, copying corresponding acad.CUIx and acad.mnr files under the program running directory to the CAD installation directory to realize automatic loading of the acad.CUIx files;
by searching and backing up the acad.cuix and acad.mnr files under the CAD installation catalog and copying the corresponding files under the program operation catalog to the installation catalog of the CAD, the automatic loading of the acad.cuix files is realized, the complicated operation in the actual operation process is avoided, and the system is more convenient and concise;
s723, reading an 'applications' item of a CAD registry, adding a 'GADS' item under the catalog, establishing a subitem of 'LOADCTRRS' with the type REG_DWORD, setting the value of the subitem to be '2', establishing a subitem of 'LOADER' with the type REG_SZ, and setting the value of the subitem to be 'VVLoader.arx';
s724, using a function loadModule in ObjectARX in the VVLoader project to realize automatic loading of files of other modules arx;
S725, designing a start CAD button and a CAD file opening button by a start interface to realize the start of a CAD program and the modification of a stored file;
s73, designing a main interface
S731, creating a pull-down menu by using a CUI editor, wherein the pull-down menu comprises files, autoCAD, primitive drawing, primitive editing, high-order drilling basic data, gas extraction basic condition evaluation, gas extraction evaluation index calculation, gas extraction design assistant, output report and auxiliary functions;
the graphic elements in graphic element drawing and graphic element editing comprise five sensor graphic elements, namely a permanent gas extraction pipeline graphic element, a mobile gas pumping extraction pipeline graphic element, a gas pumping extraction pump graphic element, a gas control valve graphic element, a temperature sensor 'C', a flow sensor 'L', a differential pressure sensor 'A', a gas sensor 'T' and a wind speed sensor 'V';
s732, creating a toolbar corresponding to the drop-down menu through a custom column in a CUI editor of the CAD;
s733, creating an independent working space;
s734, setting double-click actions of all the primitives in the custom interface;
s735, selecting and storing in the CUI editor, and copying the related files for use;
S74, designing a functional interface
S741, adding a "Dialog" resource in the VVLoader item, adding a "Button Control" Control and a "PictureControl" Control, setting the ID of PictureControl as IDC_PROP_POS, creating a CMFCPropertyGridCtrl Control at the position, searching the position of the ID as IDC_PROPERTTY_GRID, and wearing the CMFCPropertyGridProperty Control for displaying, setting and controlling the data type and the value of the attribute value and completing the creation of the attribute data interface;
for example, the CMFCPropertyGridCtrl control is used for carrying out function classification on attribute data, and the functions of a gas pipeline are classified into three items of 'related pressure', 'pipe diameter' and 'flow rate in pipe', so that different attribute data are provided for different functions, and the data values of the same attribute data are kept to be automatically synchronized;
s742, responding to double-click of the CMFCPropertyGridCtr control by reloading the OnDblCIk () function of the CMFCPropertyGridGredCtr control, calculating a value corresponding to the CMFCPropertyGridCtr control, inputting or calculating a value of high-order drilling basic information, clicking to determine, writing data into a 'calculation parameter' global object, and completing creation of a high-order drilling basic information interface;
s743, adding dialogue box resources in the project of the compiler, adding RichEdit2 controls, setting the ID of a first RichEdit2 control as IDC_RICHEDIT2_LOCATION for the description of the position four-neighbor relation of the working face, setting the ID of a second RichEdit2 control as IDC_RICHEDIT2_NUM for the description of the gas content, the number of pressure measuring points, the position and the result of the working face, and completing the creation of the outline interface of the working face;
S745, creating a calculation interface comprising high-order drilling basic information, gas extraction basic condition evaluation and gas extraction evaluation indexes, and editing and modifying the result obtained by calculation cannot be performed;
s75, setting information early warning
S751, comparing relevant information calculated by gas extraction basic condition evaluation and gas extraction evaluation indexes with preset expected information;
s752, if the expected information is met, not sending an alarm and control instruction; otherwise, the red alarm and control instruction is sent to the action executing mechanism to realize the adjustment control of the action executing mechanism.
In summary, the invention adopts the method of literature and regulation investigation and interpretation to provide theoretical basis and actual data for system establishment, establishes a gas extraction mathematical model through a hole distribution parameter calculation model and a hole drilling parameter calculation model, establishes a gas extraction effect evaluation model through evaluation indexes such as coal reserves, residual gas content, residual gas pressure, gas extraction rate and the like which participate in evaluation, forms a gas extraction auxiliary device model through gas extraction pipeline graphic element modeling, gas extraction pump graphic element modeling and gas control valve graphic element modeling, forms a gas extraction monitoring device model through gas extraction sensor graphic element modeling, selects objectARX to carry out secondary development on AutoCAD through comparison of a development platform, and establishes a visual model of a gas extraction management system, thereby realizing programming and visualization of the logarithmic model. The method has the advantages of simple steps, novel and reasonable design, less manpower and material resources, avoiding complicated manual data acquisition and complicated calculation work, and reducing the occurrence of gas accidents to a great extent.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims (8)

1. The design method of the three-dimensional comprehensive gas extraction visual management system is characterized by comprising the following steps of:
s1, reading and researching AQ1026-2006 basic standards for coal mine gas extraction and temporary regulations for coal mine gas extraction reaching standards;
s2, researching by combining a gas extraction method of a production site, and providing a theoretical basis for system establishment;
s3, drawing a three-dimensional schematic diagram of the high-level drilling and a section diagram of the high-level drilling according to the rock property of the top plate, the hole distribution parameters and the basic information of the high-level drilling by researching a gas extraction method of a stope, a goaf and a mining influence area, and establishing a gas extraction mathematical model;
s4, establishing a gas extraction effect evaluation model according to the basic condition evaluation and the gas extraction evaluation index of the gas extraction according to AQ1026-2006 basic standard for gas extraction of coal mine and temporary rule for gas extraction of coal mine;
S5, building a gas extraction pipeline graphic element model, a mobile pump gas extraction pipeline graphic element model and a mobile pump gas extraction pipeline graphic element model by designing a permanent gas extraction pipeline graphic element, a mobile pump gas extraction pipeline graphic element and a mobile pump gas extraction pipeline graphic element, and building a gas pump graphic element model and a gas control valve graphic element model by designing a gas extraction pump graphic element and a gas control valve graphic element;
s6, establishing five sensor primitives of a temperature sensor 'C', a flow sensor 'L', a differential pressure sensor 'A', a gas sensor 'T' and a wind speed sensor 'V' to form a gas extraction monitoring device model;
s7, configuring through research and development tools, designing a starting interface, a main interface and a functional interface, setting information early warning, and programming the gas extraction mathematical model, the gas extraction effect evaluation model, the gas extraction pipeline graphic primitive model, the mobile pump gas extraction pipeline graphic primitive model, the gas pump graphic primitive model, the gas control valve graphic primitive model and the gas extraction monitoring device model built in the steps S3-S6 to finish designing a gas extraction visual management system;
The specific steps of the step S3 include:
s31, calculating the height H of the caving zone according to the rock property of the roof by researching a gas extraction method of a stope face, a goaf and a mining influence area m Fracture zone height H li Is a value of (2);
s32, according to the height H of the collapse zone m Fracture zone height H li Calculating the distance H between the final hole position and the vertical direction of the coal seam floor Final hole ；
Wherein,
s33, calculating the values of the height H of the final hole position to the coal seam floor, the deflection angle alpha of the high-level drilling, the elevation angle beta of the high-level drilling and the length L of the high-level drilling in the vertical direction according to the hole distribution parameters and the basic information of the high-level drilling, and drawing a three-dimensional schematic diagram of the high-level drilling;
s34, calculating the effective length L of the single high-order drilling hole Effective and effective Effective advance length L of stope face Propulsion of Drawing a gas extraction high-level drilling section graph and establishing a gas extraction mathematical model according to the value of the space S between high-level drilling sites;
the specific steps of the step S4 include:
s41, according to AQ1026-2006 basic Standard for gas extraction of coal mine and temporary regulations for gas extraction of coal mine, according to basic condition evaluation and evaluation index of gas extraction, the calculation and evaluation unit participates in calculating coal reserves G and residual gas content W of coal after gas extraction CY Residual relative gas pressure P of coal CY Analyzable gas quantity W j Gas extraction rate eta of coal face m Mine gas extraction rate eta k Estimated achievable gas extraction quantity Q 1 ；
S42, calculating the pre-extraction gas quantity Q before mining y Is the value of (1) and the gas extraction quantity Q during the mining c The value of (1) and the goaf gas extraction quantity Q k Is a value of (2);
s43, establishing a gas extraction effect evaluation model according to the data obtained by calculation in the steps S41 and S42, and judging whether the gas extraction amount meets the requirement of meeting the gas extraction standard.
2. The method for designing a visual management system for three-dimensional integrated gas extraction according to claim 1, wherein in step S31, the roof rock comprises hard rock, medium hard rock, weak rock, and extremely weak rock;
wherein, the calculation formulas of the height of the collapse zone and the height of the fracture zone of the hard rock are respectively as follows:
the calculation formulas of the height of the collapse zone and the height of the fracture zone of the medium hard rock are respectively as follows:
the calculation formulas of the height of the collapse zone and the height of the fracture zone of the weak rock are respectively as follows:
the calculation formulas of the height of the collapse zone and the height of the fracture zone of the extremely weak rock are respectively as follows:
where M represents the face mining height.
3. The method for designing a visual management system for three-dimensional integrated gas extraction according to claim 1, wherein in step S33, a calculation formula of a height H from a final hole position to a coal seam floor in a vertical direction is as follows:
H＝H Final hole -h；
H is the height of the high-level drilling hole, namely the height of the high-level drilling hole from the coal seam floor;
the calculation formula of the deflection angle alpha of the high-order drilling is as follows:
wherein X is the distance from the final position to the open hole position along the trend direction of the coal seam, and Y is the distance from the final position to the return airway along the trend direction of the coal seam;
the calculation formula of the elevation angle beta of the high-order drilling hole is as follows:
the calculation formula of the high-order drilling length L is as follows:
or->
4. The method for designing a visual management system for three-dimensional integrated gas extraction according to claim 1, wherein in step S34, the effective length L of a single high-order borehole is Effective and effective The calculation formula of (2) is as follows:
effective advance length L of stope face Propulsion of The calculation formula of (2) is as follows:
wherein, gamma is the included angle of the return air cis-slot relative to the horizontal plane;
the calculation formula of the space S between high-order drilling sites is as follows:
5. the method for designing a visual management system for three-dimensional integrated gas extraction according to claim 1, wherein in step S41,
the evaluation unit participates in calculating the calculation formula of the coal reserves as follows:
G＝(L a -H 1 -H 2 +2R)(l-h 1 -h 2 +R)mλ；
wherein L is a For evaluating the trend length of the unit coal seam, l is the average trend length of the coal seam in the control range of the extraction drilling of the evaluation unit, H 1 、H 2 Respectively the gas pre-discharging equivalent width of the lanes at the two ends of the direction of the evaluation unit, and if no lane exists, the gas pre-discharging equivalent width is 0 h 1 、h 2 The gas pre-drainage equivalent widths of the roadways on the two sides of the inclined direction of the evaluation unit are respectively 0 if no roadway exists, R is the effective influence radius of the extraction drilling hole, m is the average coal seam thickness of the evaluation unit, and lambda is the density of the coal of the evaluation unit;
the calculation formula of the residual gas content of the coal after gas extraction is as follows:
wherein W is CY Is the residual gas content of coal, W 0 The method comprises the steps that (1) the raw gas content of coal is represented by Q, the total amount of gas pumped and discharged by drilling of an evaluation unit is represented by Q, and the coal reserves are calculated by G;
the calculation formula of the residual relative gas pressure of the coal is as follows:
wherein a and b are adsorption constants; p (P) CY For residual relative gas pressure of coal seam, P a Is at standard atmospheric pressure, A d Is the ash content of coal, M ad Is the moisture of the coal, pi is the porosity of the coal, and theta is the volume weight of the coal;
the calculation formula of the resolvable gas amount is as follows:
W j ＝W CY -W CC ；
wherein W is j Is the desorption gas quantity of coal, W CC Is the residual gas content of the coal under the standard atmospheric pressure;
the calculation formula of the gas extraction rate of the coal face is as follows:
wherein eta m For gas extraction rate of coal face, Q mc For the average gas extraction quantity of the working face in the same month during the stoping period, Q mf The air exhaust gas amount of the working face in the current month;
the calculation formula of the mine gas extraction rate is as follows:
wherein eta k For mine gas extraction rate, Q kc Average gas extraction quantity of mine in current month, Q kf The air exhaust gas amount of the mine in the current month;
the calculation formula of the expected gas extraction amount is as follows:
Q 1 ＝Q y +Q c +Q k ；
wherein Q is 1 To predict the achievable gas extraction, Q y To pre-extract gas quantity before mining, Q c The gas extraction amount during the mining comprises the gas extraction amount of the coal seam, the gas extraction amount of the upper and lower adjacent layers and surrounding rock continuously pre-extracted during the mining of the stoping face, the gas extraction amount during the digging of a coal roadway, and the gas extraction amount during the driving of the coal roadway, Q k The gas quantity is extracted from the goaf, including the gas quantity of the existing goaf and the old goaf.
6. The method for designing a visual management system for three-dimensional integrated gas extraction according to claim 1, wherein in step S42, the calculation formula of the pre-extraction gas amount before extraction is:
Q y ＝∑Q h +∑Q j +∑Q s ；
in which Q h For pre-pumping gas quantity of coal seam section or working face recovery area, Q j For pre-pumping the gas quantity of the coal roadway strip, Q s The gas quantity of the coal uncovering area of the pre-pumping cross-cut is as follows;
in the formula, the calculation formula of the gas quantity of the pre-extracted coal seam section or the working face recovery area is as follows:
wherein K is 1 Taking 1.05 to 1.20 percent of gas extraction imbalance coefficient when a coal seam section or a working face extraction area is pre-extracted, taking 1.50 to 2.00 percent of coal roadway strips or a cross cut coal uncovering area, taking 1.20 to 1.50 percent of surrounding rock pressure relief gas when adjacent layers and surrounding rock pressure relief gas are extracted, and L 1 For pre-extracting the width of coal seam section or working face recovery area, L 2 For the length of the section or the stope face of the pre-extracted coal bed, M is the average thickness of the pre-extracted coal bed, eta is the apparent density of the coal, and W 1 The pre-pumping gas content reaches the standard, and t is the pre-pumping time;
the calculation formula of the gas quantity of the strip of the pre-drainage coal roadway is as follows:
Q j ＝q h ×L k ；
wherein q h Average extraction amount for coal hole section of through-layer drilling or hundred meter drilling of down-layer drilling, L k The total length of the coal hole section for the layer-penetrating drilling or the total length of the bedding drilling;
the calculation formula of the gas quantity of the pre-pumping cross-cut coal uncovering area is as follows:
wherein T is the effective control area of the drilling hole;
the calculation formula of the gas extraction amount during the mining is as follows:
Q c ＝∑Q bc +∑Q yc ；
in which Q bc For the pre-pumping quantity of the coal bed during the stoping of the working face, Q yc The pressure relief gas extraction amount for the adjacent layers and surrounding rock during the working face recovery period;
the calculation formula of the pre-pumping amount of the coal seam during the working face stoping is as follows:
Q bc ＝Q h ×K c ；
wherein K is c Taking 0.3-0.5 for the ratio of the pre-extraction amount of the coal seam to the extraction amount in the pre-extraction period in the working face extraction period;
the calculation formula of the pressure relief gas extraction amount of the adjacent layer and the surrounding rock during the working face extraction period is as follows:
wherein L is 3 To stope face width，L 4 To the annual push progress length of the stope face, m j Is adjacent to the coal layer in thickness eta j K is the gas emission rate of the adjacent layer y For the pressure relief gas extraction rate of adjacent layers, W 0 Is the original gas content of coal, W c Residual gas content of the coal seam;
the calculation formula of the goaf gas extraction amount is as follows:
Q k ＝∑Q xk +∑Q lk ；
in which Q xk Is the gas extraction quantity of the existing goaf, Q ck The gas extraction amount is the old goaf;
in step S43, when Q 2 ≥Q×η k When the gas extraction amount meets the requirement of reaching the standard of gas extraction;
wherein Q is 2 In order to extract the gas extraction quantity meeting the requirements, Q is the absolute gas emission quantity, eta k The method is the gas extraction rate of the mine.
7. The method for designing a visual management system for three-dimensional integrated gas extraction according to claim 1, wherein the specific steps of configuring a research and development tool, designing a starting interface, a main interface and a functional interface, and setting information early warning are as follows:
s71, research and development tool configuration
S711, selecting ObjectARX2010 and Visual Studio 2008 to develop AutoCAD 2010 and configure the development environment required by ObjectARX;
s712, installing a Visual Studio 2008 SP1 patch;
s713, downloading ObjectARX2010SDK from the ObjectARX network under the condition that the compiler operates normally, decompressing and installing the ObjectARX2010SDK into a specified directory;
s714, setting a global inclusion file and a library file;
S715, selecting a choice in a tool menu bar of a VS2008, selecting a 'containing file', adding two catalogs of 'inc' and 'inc-win 32' under an installation catalog, and setting sixty-four development platforms in the same way;
s716, selecting a choice in a tool menu bar of the VS2008, selecting a library file, adding a list of lib-win32 under an installation directory, and setting a sixty-bit development platform in the same way;
s717, qt4.8 is selected as a development tool, and the environment setting is the same as ObjectARX;
s72, designing a starting interface
S721, acquiring an installation catalog of CAD, and searching and backing up acad.CUIx and acad.mnr files;
s722, copying corresponding acad.CUIx and acad.mnr files under the program running directory to the CAD installation directory to realize automatic loading of the acad.CUIx files;
s723, reading an 'applications' item of a CAD registry, adding a 'GADS' item under the catalog, establishing a subitem of 'LOADCTRRS' with the type REG_DWORD, setting the value of the subitem to be '2', establishing a subitem of 'LOADER' with the type REG_SZ, and setting the value of the subitem to be 'VVLoader.arx';
s724, using a function loadModule in ObjectARX in the VVLoader project to realize automatic loading of files of other modules arx;
S725, designing a start CAD button and a CAD file opening button by a start interface to realize the start of a CAD program and the modification of a stored file;
s73, designing a main interface
S731, creating a pull-down menu by using a CUI editor, wherein the pull-down menu comprises files, autoCAD, primitive drawing, primitive editing, high-order drilling basic information, gas extraction basic condition evaluation, gas extraction evaluation index calculation, gas extraction design assistant, output report and auxiliary functions;
s732, creating a toolbar corresponding to the drop-down menu through a custom column in a CUI editor of the CAD;
s733, creating an independent working space;
s734, setting double-click actions of all the primitives in the custom interface;
s735, selecting and storing in the CUI editor, and copying the related files for use;
s74, designing a functional interface
S741, adding a "Dialog" resource in the VVLoader item, adding a "Button Control" Control and a "PictureControl" Control, setting the ID of PictureControl as IDC_PROP_POS, creating a CMFCPropertyGridCtrl Control at the position, searching the position of the ID as IDC_PROPERTY_GRID, and finishing the creation of the attribute data interface by passing through the CMFCPropertyGridProperty Control;
S742, responding to double-click of the CMFCPropertyGridCtr control by reloading the OnDblCIk () function of the CMFCPropertyGridGredCtr control, calculating a value corresponding to the CMFCPropertyGridCtr control, inputting or calculating a value of high-order drilling basic information, clicking to determine, writing data into a 'calculation parameter' global object, and completing creation of a high-order drilling basic information interface;
s743, adding dialogue box resources in the project of the compiler, adding RichEdit2 controls, setting the ID of the first RichEdit2 control as IDC_RICHEDIT2_LOCATION, setting the ID of the second RichEdit2 control as IDC_RICHEDIT2_NUM, and completing the creation of a working face summary interface;
s744, creating a calculation interface comprising high-order drilling basic information, gas extraction basic condition evaluation and gas extraction evaluation indexes, and editing and modifying the result obtained by calculation cannot be performed;
s75, setting information early warning
S751, comparing relevant information calculated by gas extraction basic condition evaluation and gas extraction evaluation indexes with preset expected information;
s752, if the expected information is met, not sending an alarm and control instruction; otherwise, the red alarm and control instruction is sent to the action executing mechanism to realize the adjustment control of the action executing mechanism.
8. The method for designing a visual management system for three-dimensional integrated gas extraction according to claim 7, wherein the graphic elements in graphic element drawing and graphic element editing comprise five sensor graphic elements including a permanent gas extraction pipeline graphic element, a mobile pump gas extraction pipeline graphic element, a gas extraction pump graphic element, a gas control valve graphic element, a temperature sensor "C", a flow sensor "L", a differential pressure sensor "A", a gas sensor "T" and a wind speed sensor "V".
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