A coal mine gas information collection and early warning system and method

Abstract

The present invention relates to the technical field of coal mine gas information collection and early warning, and in particular to a coal mine gas information collection and early warning system and method, the coal mine gas information collection and early warning system comprising a data collection module for determining the eligibility of the gas distribution of a fully mechanized mining face based on a uniformity evaluation value; a data analysis module connected to the data collection module for determining the relationship between the hole depth and the hole spacing under different drilling detection strategies based on the gas volume per unit time; a data detection module connected to the data analysis module for determining the eligibility of the obtained early warning value based on the sound impact evaluation value; a data processing module connected to the data detection module for determining the eligibility of the hole depth and the hole spacing based on the fluidity evaluation value; and a data adjustment module connected to the data detection module and the data processing module for determining the adjustment method of the early warning value, the hole depth and the hole spacing. The present invention improves the efficiency of coal mine gas information collection and early warning.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine gas information collection and early warning, and in particular to a coal mine gas information collection and early warning system and method. Background Art

[0002] Coal mine gas accidents are a major safety hazard in coal mine production. Gas explosions and poisoning accidents occur from time to time, seriously threatening the lives of miners and the stability of coal mine production. During coal mining, gas easily accumulates in coal seam cracks to form gas bodies, which can explode once they encounter open flames or high temperature sources. At the same time, gas accumulation may also lead to suffocation and poisoning accidents in mines. Therefore, in order to effectively prevent and control coal mine gas accidents, ensure the safety of miners and the stability of coal mine production, the research and application of coal mine gas information collection and early warning systems and methods are particularly important.

[0003] Chinese patent application publication number: CN106194263A discloses a coal mine gas disaster monitoring and early warning system and early warning method. The system and method firstly realize the automatic monitoring and transmission of coal mine gas disaster related safety information and real-time collection, storage and dynamic sharing through a gas disaster safety information collection platform; then, according to the gas disaster monitoring and early warning indicators and rules established from four aspects of objective danger, preventive measures defects, management measures defects and disaster control, the gas disaster monitoring and early warning analysis and management platform is used to deeply mine and analyze the relevant safety information, automatically determine the gas disaster danger level and scope, and publish different levels of early warning results in the form of sound, light, text message, network, etc.; finally, according to the published early warning results, the early warning linkage control platform is used to realize the emergency linkage control of coal mine monitoring systems such as coal mine power monitoring system, underground personnel positioning system, underground broadcasting system, ventilation online monitoring system, etc., and finally achieve the purpose of online monitoring, real-time analysis, intelligent early warning and linkage control of coal mine gas disasters. However, the above-mentioned prior art has the following problems: the accuracy of coal mine gas information collection and early warning is low, which leads to the problem of low efficiency of the system in coal mine gas information collection and early warning. Summary of the invention

[0004] To this end, the present invention provides a coal mine gas information collection and early warning system and method, so as to overcome the problem of low efficiency of coal mine gas information collection and early warning in the prior art.

[0005] To achieve the above objectives, the present invention provides a coal mine gas information collection and early warning system and method, comprising:

[0006] A data acquisition module, which is used to determine the eligibility of the gas distribution of the fully mechanized mining face based on the uniformity evaluation value of the gas distribution;

[0007] A data analysis module, which is connected to the data acquisition module, is used to determine a drilling detection strategy based on the eligibility of the gas distribution of the fully mechanized mining face, and to determine a corresponding hole depth and hole spacing according to the gas volume per unit time of the fully mechanized mining face under the corresponding drilling detection strategy;

[0008] A data detection module, which is connected to the data analysis module, is used to determine the method of determining the warning value according to the average concentration change under the condition of the corresponding drilling detection strategy, and determine the eligibility of the warning value according to the sound impact evaluation value during the drilling process;

[0009] A data processing module, which is connected to the data detection module, and is used to determine the eligibility of the hole depth and the hole spacing according to the fluidity evaluation value of the gas in each hole under the condition of the corresponding drilling detection strategy;

[0010] A data adjustment module is connected to the data detection module and the data processing module, and is used to determine whether to increase the warning value based on the difference between the preset sound impact evaluation value and the sound impact evaluation value when the warning value is unqualified, and to increase the hole depth based on the ratio of the fluidity evaluation value to the preset fluidity evaluation value when the hole depth and the hole spacing are unqualified, or to determine whether to reduce the hole spacing based on the relative difference between the fluidity evaluation value and the preset fluidity evaluation value.

[0011] Furthermore, the data analysis module determines that the gas distribution of the comprehensive mining face is qualified based on the comparison result that the uniformity evaluation value is greater than the preset uniformity evaluation value, and determines that the smaller the hole depth and the smaller the hole spacing under the uniform drilling detection strategy based on the comparison result that the gas amount per unit time is less than or equal to the preset gas amount per unit time, and determines the warning value according to the comparison result of the average concentration change and the preset average concentration change.

[0012] Furthermore, the data analysis module determines that the gas distribution of the comprehensive mining face is unqualified based on the comparison result that the uniformity evaluation value is less than or equal to the preset uniformity evaluation value, and determines that the smaller the hole depth and the larger the hole spacing under the centralized drilling detection strategy based on the comparison result that the gas amount per unit time is less than or equal to the preset gas amount per unit time, and determines the warning value according to the comparison result of the average concentration change and the preset average concentration change.

[0013] Furthermore, under the condition of determining the warning value, the data detection module determines that the warning value is unqualified based on the comparison result that the sound impact evaluation value is less than or equal to the preset sound impact evaluation value, and determines to increase the warning value by the first preset warning adjustment coefficient based on the comparison result that the preset sound impact evaluation value and the difference between the sound impact evaluation value is less than or equal to the preset difference.

[0014] Furthermore, under the condition of determining the warning value, the data detection module determines that the warning value is unqualified based on the comparison result that the sound impact evaluation value is less than or equal to the preset sound impact evaluation value, and determines to increase the warning value by a second preset warning adjustment coefficient based on the comparison result that the difference between the preset sound impact evaluation value and the sound impact evaluation value is greater than the preset difference.

[0015] Furthermore, under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data adjustment module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to increase the hole depth by the first preset hole depth adjustment coefficient based on the comparison result that the ratio of the fluidity evaluation value to the preset fluidity evaluation value is less than or equal to the preset ratio.

[0016] Furthermore, under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data adjustment module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to increase the hole depth by the second preset hole depth adjustment coefficient based on the comparison result that the ratio of the fluidity evaluation value to the preset fluidity evaluation value is greater than the preset ratio.

[0017] Furthermore, under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data processing module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to reduce the hole spacing by the first preset hole spacing adjustment coefficient based on the comparison result that the relative difference between the fluidity evaluation value and the preset fluidity evaluation value is less than or equal to the preset relative difference.

[0018] Furthermore, under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data processing module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to reduce the hole spacing by the second preset hole spacing adjustment coefficient based on the comparison result that the relative difference between the fluidity evaluation value and the preset fluidity evaluation value is greater than the preset relative difference.

[0019] Another aspect of the present invention further provides a coal mine gas information collection and early warning method, comprising:

[0020] Step S1, determining the eligibility of the gas distribution of the fully mechanized mining face through the uniformity evaluation value of the gas distribution;

[0021] Step S2, determining a drilling detection strategy based on the eligibility of the gas distribution of the fully mechanized mining face, determining the relationship between the corresponding hole depth and the hole spacing according to the gas volume per unit time under the corresponding drilling detection strategy, and determining the hole depth and the hole spacing;

[0022] Step S3, based on the corresponding perforation detection strategy, determine the method for determining the warning value according to the average concentration change, and determine the eligibility of the obtained warning value according to the sound impact evaluation value;

[0023] Step S4, based on the corresponding drilling detection strategy, determine the eligibility of the hole depth and the hole spacing according to the fluidity evaluation value of the gas in each hole;

[0024] Step S5, based on the condition that the warning value is unqualified, the adjustment method of the warning value is determined according to the difference between the preset sound impact evaluation value and the sound impact evaluation value, and based on the condition that the hole depth and the hole spacing are unqualified, the adjustment method of the hole depth or the hole spacing is determined according to the ratio or relative difference between the fluidity evaluation value and the preset fluidity evaluation value.

[0025] Compared with the prior art, the beneficial effect of the present invention is that the present invention determines whether the gas distribution is qualified by comparing the gas uniformity evaluation value of multi-point detection of the fully mechanized mining face, and adjusts the drilling detection strategy accordingly, and adjusts the relationship between the hole depth and the hole spacing according to the gas volume per unit time. It ensures that the potential gas accumulation risk can be warned in time, which helps to timely discover and deal with the gas over-limit situation, thereby improving the efficiency of coal mine gas information collection and warning.

[0026] Furthermore, the present invention determines whether the gas distribution is qualified by comparing the gas uniformity evaluation values ​​of multi-point detection of the fully mechanized mining face, and adjusts the drilling detection strategy accordingly, and adjusts the relationship between the hole depth and the hole spacing according to the gas volume per unit time. It ensures that the potential gas accumulation risk can be warned in time, which helps to timely discover and deal with the gas over-limit situation, thereby improving the efficiency of coal mine gas information collection and warning.

[0027] Furthermore, the present invention intelligently adjusts the drilling detection strategy through multi-point gas uniformity assessment of the fully mechanized mining face, dynamically optimizes the hole depth and hole spacing according to the gas volume per unit time, and realizes accurate and efficient gas management. This intelligent early warning and processing mechanism effectively prevents the occurrence of gas exceeding the limit, greatly improving the safety of coal mine operations and the accuracy of gas information collection and early warning.

[0028] Furthermore, the present invention verifies the rationality of the calculation of hole depth and hole spacing by calculating the fluidity evaluation value of the gas in the hole and comparing it with the preset fluidity evaluation value. By verifying the rationality of the hole depth and hole spacing, it can ensure that the drilling operation can more effectively promote gas flow, help avoid gas accumulation in the coal seam, thereby improving the accuracy of coal mine gas information collection and early warning.

[0029] Furthermore, the present invention judges the acceptability of the hole depth and the hole spacing by comparing the fluidity evaluation value of the gas in the hole with the preset fluidity evaluation value, and dynamically adjusts the hole depth and the hole spacing to more optimal values ​​according to the preset hole depth and hole spacing adjustment coefficients for unqualified cases, adjusts the drilling parameters according to the gas fluidity data, reduces manual intervention, improves operating efficiency and precision, and thus improves the accuracy and efficiency of coal mine gas information collection and early warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a module connection diagram of a coal mine gas information collection and early warning system according to an embodiment of the present invention;

[0031] Figure 2 A flow chart for determining the eligibility of gas distribution in a fully mechanized mining face according to an embodiment of the present invention;

[0032] Figure 3 A flow chart for determining the eligibility of a warning value for an embodiment of the present invention;

[0033] Figure 4 The present invention is a flowchart of a method for collecting and warning coal mine gas information according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0037] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figure 1 - Figure 4 As shown, Figure 1 This is a module connection diagram of a coal mine gas information collection and early warning system according to an embodiment of the present invention; Figure 2 A flow chart for determining the eligibility of gas distribution in a fully mechanized mining face according to an embodiment of the present invention; Figure 3 A flow chart for determining the eligibility of a warning value for an embodiment of the present invention; Figure 4 The present invention is a flowchart of a method for collecting and warning coal mine gas information according to an embodiment of the present invention.

[0039] The embodiment of the present invention is used for a coal mine gas information collection and early warning system, comprising:

[0040] A data acquisition module, which is used to determine the eligibility of the gas distribution of the fully mechanized mining face based on the uniformity evaluation value of the gas distribution;

[0041] A data analysis module, which is connected to the data acquisition module and is used to determine the relationship between the hole depth and the hole spacing under different drilling detection strategies based on the gas volume per unit time;

[0042] A data detection module, which is connected to the data analysis module and is used to determine the eligibility of the obtained warning value based on the sound impact evaluation value, including a sound sensor arranged on the data detection module for collecting sound information;

[0043] A data processing module, which is connected to the data detection module and is used to determine the eligibility of the hole depth and the hole spacing based on the fluidity evaluation value of the gas in each hole;

[0044] A data adjustment module is connected to the data detection module and the data processing module to determine the adjustment method of the warning value, the hole depth and the hole spacing.

[0045] Specifically, the data acquisition module determines the eligibility of the gas distribution of the fully mechanized mining face based on the gas concentration collected from several detection points on the fully mechanized mining face and the comparison result of the uniformity evaluation value of the gas distribution and the preset uniformity evaluation value;

[0046] If the uniformity evaluation value is less than or equal to the preset uniformity evaluation value, it is determined that the gas distribution of the fully mechanized mining face is unqualified;

[0047] If the uniformity evaluation value is greater than the preset uniformity evaluation value, it is determined that the gas distribution of the comprehensive mining face is qualified.

[0048] In the embodiment of the present invention, the preset uniformity evaluation value is 0.85. The preset uniformity evaluation value is obtained by taking the average value of uniformity evaluation values ​​with qualified gas distribution conditions in several historical fully mechanized mining faces. However, the above value is not limited to this. Technical personnel in this field can also adjust the value according to actual needs.

[0049] Specifically, the data acquisition module calculates the uniformity evaluation value according to the following formula, setting:

[0050] ;

[0051] Among them, σ represents the uniformity evaluation value, n represents the number of detection points on the fully mechanized mining surface, Cj represents the gas concentration at the jth detection point, Indicates the average gas concentration of all detection points.

[0052] Specifically, the data analysis module determines the uniform drilling detection strategy for the fully mechanized mining face under the condition that the gas distribution of the fully mechanized mining face is qualified, and determines the relationship between the hole depth and the hole spacing under the uniform drilling detection strategy according to the comparison result of the gas volume per unit time and the preset gas volume per unit time;

[0053] If the gas amount per unit time is less than or equal to the preset gas amount per unit time, it is determined that the smaller the hole depth, the smaller the hole spacing;

[0054] If the gas amount per unit time is greater than the preset gas amount per unit time, it is determined that the smaller the hole depth, the larger the hole spacing.

[0055] In the embodiment of the present invention, the preset gas volume per unit time is 10m 3 / min, but the above value is not limited thereto, and those skilled in the art can also adjust the value according to actual needs.

[0056] Specifically, the data analysis module calculates the gas volume per unit time according to the following formula:

[0057] ;

[0058] Among them, P represents the amount of gas per unit time, V represents the total volume of gas, and t0 represents the preset unit time.

[0059] Specifically, the present invention determines whether the gas distribution is qualified by comparing the gas uniformity evaluation values ​​of multi-point detection of the fully mechanized mining face, and adjusts the drilling detection strategy accordingly, and adjusts the relationship between the hole depth and the hole spacing according to the gas volume per unit time. It ensures that the potential gas accumulation risk can be warned in time, which helps to timely discover and deal with the gas over-limit situation, thereby improving the efficiency of coal mine gas information collection and warning.

[0060] Specifically, the data analysis module, under the condition that the gas distribution of the fully mechanized mining face is determined to be unqualified, takes the minimum gas concentration area of ​​the fully mechanized mining face as the reference point, determines the centralized drilling detection strategy for the fully mechanized mining face according to the increasing radius gradient, and determines the relationship between the hole depth and the hole spacing under the centralized drilling detection strategy according to the comparison result of the gas volume per unit time and the preset gas volume per unit time;

[0061] If the gas volume per unit time is less than or equal to the preset gas volume per unit time, it is determined that the smaller the hole depth, the larger the hole spacing;

[0062] If the gas amount per unit time is greater than the preset gas amount per unit time, it is determined that the smaller the hole depth, the smaller the hole spacing.

[0063] Specifically, under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data analysis module determines the hole depth according to the ratio of the gas amount per unit time to the preset gas amount per unit time, and determines the hole spacing according to the relative difference between the gas amount per unit time and the preset gas amount per unit time.

[0064] Specifically, the present invention determines whether the gas distribution is qualified by comparing the gas uniformity evaluation values ​​of multi-point detection of the fully mechanized mining face, and adjusts the drilling detection strategy accordingly, and adjusts the relationship between the hole depth and the hole spacing according to the gas volume per unit time. It ensures that the potential gas accumulation risk can be warned in time, which helps to timely discover and deal with the gas over-limit situation, thereby improving the efficiency of coal mine gas information collection and warning.

[0065] Specifically, the data detection module determines the corresponding drilling detection strategy for the fully mechanized mining face, and calculates the average concentration change within a preset time period obtained according to the gas concentration in each hole and the preset average concentration change 7m 3 / min comparison results to determine the warning value;

[0066] If the average concentration change is less than or equal to the preset average concentration change, the warning value is determined based on the average concentration of the gas concentration in each hole;

[0067] If the average concentration change is greater than the preset average concentration change, the warning value is determined based on the maximum concentration of the gas concentration in each hole.

[0068] In the embodiment of the present invention, the preset average concentration change value is 7m 3 / min, but the above value is not limited thereto, and those skilled in the art can also adjust the value according to actual needs.

[0069] Specifically, the data detection module calculates the average concentration change according to the following formula, setting:

[0070] ;

[0071] Among them, ΔC represents the average concentration change, n represents the number of holes drilled, C0i represents the gas concentration at the beginning of the preset time in the i-th hole, C1i represents the gas concentration at the beginning of the preset time in the i-th hole, and T represents the preset time.

[0072] Specifically, the data detection module determines the eligibility of the obtained warning value based on the comparison result of the sound impact evaluation value in the punching process obtained by the sound sensor and the preset sound impact evaluation value 0.83 under the condition of determining the method for determining the warning value;

[0073] If the sound impact evaluation value is less than or equal to the preset sound impact evaluation value, determining that the warning value is unqualified;

[0074] If the sound impact evaluation value is greater than a preset sound impact evaluation value, it is determined that the warning value is qualified.

[0075] In the embodiment of the present invention, the preset sound impact evaluation value is 0.83, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0076] Specifically, the data detection module calculates the sound impact evaluation value according to the following formula, setting:

[0077] ;

[0078] Among them, K represents the sound impact evaluation value, v represents the sound speed during punching, vmax represents the maximum sound speed during punching, vmin represents the minimum sound speed during punching, A represents the amplitude of the sound during punching, and t represents the duration of the sound during punching.

[0079] Specifically, the present invention intelligently adjusts the drilling detection strategy through multi-point gas uniformity assessment of the fully mechanized mining face, dynamically optimizes the hole depth and hole spacing according to the gas volume per unit time, and realizes accurate and efficient gas management. This intelligent early warning and processing mechanism effectively prevents the occurrence of gas exceeding the limit, greatly improving the safety of coal mine operations and the accuracy of gas information collection and early warning.

[0080] Specifically, the data adjustment module determines to increase the warning value according to a comparison result between a preset sound impact evaluation value and a difference between the sound impact evaluation value and a preset difference value of 0.25, under the condition that the warning value is determined to be unqualified;

[0081] If the difference is less than or equal to the preset difference, it is determined to increase the warning value to a corresponding value by using the first preset warning adjustment coefficient of 1.03;

[0082] If the difference is greater than the preset difference, it is determined to increase the warning value to a corresponding value using a second preset warning adjustment coefficient of 1.05;

[0083] The difference is the difference between the preset sound impact evaluation value and the sound impact evaluation value.

[0084] In the embodiment of the present invention, the preset difference value is 0.25, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0085] In an embodiment of the present invention, the increased warning value is set to Hz, and Hz=H×Ki is set, where H represents the warning value, Ki represents the i-th preset warning adjustment coefficient, i takes a value of 1 or 2, K1 is the first preset warning adjustment coefficient, and K2 is the second preset warning adjustment coefficient.

[0086] Specifically, the present invention compares the difference between the sound impact evaluation value and the preset sound impact evaluation value and the preset difference when the warning value is unqualified, and selects different warning adjustment coefficients to increase the warning value to ensure that the warning system can more accurately reflect the gas risk, thereby improving the accuracy and efficiency of coal mine gas information collection and warning.

[0087] Specifically, the data processing module determines the eligibility of the hole depth and the hole spacing according to the comparison result of the fluidity evaluation value of the gas in each hole with the preset fluidity evaluation value of 0.78 under the condition of determining the corresponding drilling detection strategy for the fully mechanized mining face;

[0088] If the fluidity evaluation value is less than or equal to the preset fluidity evaluation value, it is determined that the hole depth and the hole spacing are qualified;

[0089] If the fluidity evaluation value is greater than the preset fluidity evaluation value, it is determined that the hole depth and the hole spacing are unqualified.

[0090] In the embodiment of the present invention, the preset fluidity evaluation value is 0.78. The preset fluidity evaluation value is obtained by taking the average of several historical fluidity evaluation values ​​with qualified hole depths and hole spacings. However, the above value is not limited to this. Technical personnel in this field can also adjust the value according to actual needs.

[0091] Specifically, the data processing module calculates the liquidity evaluation value according to the following formula:

[0092] ;

[0093] Among them, Q represents the fluidity evaluation value, k represents the gas permeability in the pore, μ represents the dynamic viscosity of the gas in the pore, Δp represents the pressure difference at any two ends of the gas in the pore, and L0 represents the length of the gas flow path under the action of the pressure difference.

[0094] In the embodiment of the present invention, the gas flow path length is calculated by the diffusion and migration path of the tracer which is easy to track in the coal seam.

[0095] In the embodiment of the present invention, the permeability is the ability of a coal seam to allow gas to pass through its internal pores and cracks, which is determined through field tests. The dynamic viscosity is the ability of the gas to resist shear deformation when flowing, and is a measurable constant.

[0096] Specifically, the present invention verifies the rationality of the hole depth and the hole spacing by evaluating the fluidity of the gas in the hole and comparing it with a preset fluidity evaluation value. By verifying the rationality of the hole depth and the hole spacing, it can ensure that the drilling operation can more effectively promote the gas flow, help avoid the accumulation of gas in the coal seam, thereby improving the accuracy of coal mine gas information collection and early warning.

[0097] Specifically, the data adjustment module determines to increase the hole depth according to the comparison result of the ratio of the fluidity evaluation value to the preset fluidity evaluation value and the preset ratio 1.03 under the condition that the hole depth and the hole spacing are unqualified;

[0098] If the ratio is less than or equal to the preset ratio, it is determined to increase the hole depth to a corresponding value using a first preset hole depth adjustment coefficient of 1.08;

[0099] If the ratio is greater than the preset ratio, it is determined to increase the hole depth to a corresponding value using a second preset hole depth adjustment coefficient of 1.12;

[0100] The ratio is the ratio of the liquidity evaluation value to the preset liquidity evaluation value.

[0101] In the embodiment of the present invention, the preset ratio is 1.03, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0102] In an embodiment of the present invention, the increased hole depth is set to Rz, and Rz=R×Fi is set, wherein R represents the hole depth, Ki represents the i-th preset hole depth adjustment coefficient, i takes a value of 1 or 2, F1 is the first preset hole depth adjustment coefficient, and F2 is the second preset hole depth adjustment coefficient.

[0103] Specifically, the data adjustment module determines to reduce the hole spacing according to the comparison result of the relative difference between the fluidity evaluation value and the preset fluidity evaluation value and the preset relative difference of 0.32 under the condition that the hole depth and the hole spacing are unqualified;

[0104] If the relative difference is less than or equal to the preset relative difference, it is determined to reduce the hole spacing to a corresponding value using a first preset hole spacing adjustment coefficient of 0.93;

[0105] If the relative difference is greater than the preset relative difference, it is determined to reduce the hole spacing to a corresponding value using a second preset hole spacing adjustment coefficient of 0.87;

[0106] The relative difference is the relative difference between the fluidity evaluation value and the preset fluidity evaluation value.

[0107] In the embodiment of the present invention, the preset relative difference value is 0.32, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0108] In an embodiment of the present invention, the reduced hole spacing is set to Wc, and Wc=W×Si is set, wherein W represents the hole spacing, Ki represents the i-th preset hole spacing adjustment coefficient, i takes a value of 1 or 2, S1 is the first preset hole spacing adjustment coefficient, and S2 is the second preset hole spacing adjustment coefficient.

[0109] Specifically, the present invention judges the acceptability of the hole depth and the hole spacing by comparing the fluidity evaluation value of the gas in the hole with the preset fluidity evaluation value, and dynamically adjusts the hole depth and the hole spacing to more optimal values ​​through the preset hole depth and hole spacing adjustment coefficients for unqualified cases, adjusts the drilling parameters according to the gas fluidity data, reduces manual intervention, and improves operating efficiency and precision, thereby improving the accuracy and efficiency of coal mine gas information collection and early warning.

[0110] On the other hand, the present invention also provides a coal mine gas information collection and early warning system and method, comprising:

[0111] Step S1, determining the eligibility of the gas distribution of the fully mechanized mining face through the uniformity evaluation value of the gas distribution;

[0112] Step S2, determining a drilling detection strategy based on the eligibility of the gas distribution of the fully mechanized mining face, determining the relationship between the corresponding hole depth and the hole spacing according to the gas volume per unit time under the corresponding drilling detection strategy, and determining the hole depth and the hole spacing;

[0113] Step S3, based on the corresponding perforation detection strategy, determine the warning value according to the average concentration change, and determine the eligibility of the obtained warning value according to the sound impact evaluation value;

[0114] Step S4, based on the corresponding drilling detection strategy, determine the eligibility of the hole depth and the hole spacing according to the fluidity evaluation value of the gas in each hole;

[0115] Step S5, based on the condition that the warning value is unqualified, the adjustment method of the warning value is determined according to the difference between the preset sound impact evaluation value and the sound impact evaluation value, and based on the condition that the hole depth and the hole spacing are unqualified, the adjustment method of the hole depth or the hole spacing is determined according to the ratio or relative difference between the fluidity evaluation value and the preset fluidity evaluation value.

[0116] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0117] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mine gas information collection and early warning system, characterized in that: include: A data acquisition module, which is used to determine the eligibility of the gas distribution of the fully mechanized mining face based on the uniformity evaluation value of the gas distribution; A data analysis module, which is connected to the data acquisition module, is used to determine a drilling detection strategy based on the eligibility of the gas distribution of the fully mechanized mining face, and to determine a corresponding hole depth and hole spacing according to the gas volume per unit time of the fully mechanized mining face under the corresponding drilling detection strategy; The data analysis module determines that the gas distribution of the fully mechanized mining face is qualified based on the comparison result that the uniformity evaluation value is greater than the preset uniformity evaluation value, and determines that the smaller the hole depth and the smaller the hole spacing under the uniform drilling detection strategy based on the comparison result that the gas volume per unit time is less than or equal to the preset gas volume per unit time, and determines the warning value according to the comparison result of the average concentration change and the preset average concentration change; The data analysis module determines that the gas distribution of the fully mechanized mining face is unqualified based on the comparison result that the uniformity evaluation value is less than or equal to the preset uniformity evaluation value, and determines that the smaller the hole depth is, the larger the hole spacing is under the centralized drilling detection strategy based on the comparison result that the gas volume per unit time is less than or equal to the preset gas volume per unit time, and determines the warning value according to the comparison result of the average concentration change amount and the preset average concentration change amount; A data detection module, which is connected to the data analysis module, is used to determine the method of determining the warning value according to the average concentration change under the condition of the corresponding drilling detection strategy, and determine the eligibility of the warning value according to the sound impact evaluation value during the drilling process; The data detection module determines that the warning value is unqualified based on a comparison result that the sound impact evaluation value is less than or equal to a preset sound impact evaluation value under the condition of determining the warning value, and determines to increase the warning value by a first preset warning adjustment coefficient based on a comparison result that the preset sound impact evaluation value and the difference between the sound impact evaluation value are less than or equal to the preset difference; The data detection module determines that the warning value is unqualified based on a comparison result that the sound impact evaluation value is less than or equal to a preset sound impact evaluation value under the condition of determining the warning value, and determines to increase the warning value by a second preset warning adjustment coefficient based on a comparison result that the difference between the preset sound impact evaluation value and the sound impact evaluation value is greater than the preset difference; A data processing module, which is connected to the data detection module, and is used to determine the eligibility of the hole depth and the hole spacing according to the fluidity evaluation value of the gas in each hole under the condition of the corresponding drilling detection strategy; A data adjustment module is connected to the data detection module and the data processing module, and is used to determine whether to increase the warning value based on the difference between the preset sound impact evaluation value and the sound impact evaluation value when the warning value is unqualified, and to increase the hole depth based on the ratio of the fluidity evaluation value to the preset fluidity evaluation value when the hole depth and the hole spacing are unqualified, or to determine whether to reduce the hole spacing based on the relative difference between the fluidity evaluation value and the preset fluidity evaluation value.

2. The coal mine gas information collection and early warning system according to claim 1 is characterized in that: Under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data adjustment module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to increase the hole depth by the first preset hole depth adjustment coefficient based on the comparison result that the ratio of the fluidity evaluation value to the preset fluidity evaluation value is less than or equal to the preset ratio.

3. The coal mine gas information collection and early warning system according to claim 2 is characterized in that: Under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data adjustment module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to increase the hole depth by a second preset hole depth adjustment coefficient based on the comparison result that the ratio of the fluidity evaluation value to the preset fluidity evaluation value is greater than the preset ratio.

4. The coal mine gas information collection and early warning system according to claim 3 is characterized in that: Under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data processing module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to reduce the hole spacing by the first preset hole spacing adjustment coefficient based on the comparison result that the relative difference between the fluidity evaluation value and the preset fluidity evaluation value is less than or equal to the preset relative difference.

5. The coal mine gas information collection and early warning system according to claim 4 is characterized in that: Under the condition of determining the corresponding drilling detection strategy for the comprehensive mining face, the data processing module determines that the hole depth and the hole spacing are unqualified based on the comparison result that the fluidity evaluation value of the gas in each hole is greater than the preset fluidity evaluation value, and determines to reduce the hole spacing by a second preset hole spacing adjustment coefficient based on the comparison result that the relative difference between the fluidity evaluation value and the preset fluidity evaluation value is greater than the preset relative difference.

6. A coal mine gas information collection and early warning method, using the coal mine gas information collection and early warning system according to any one of claims 1 to 5, characterized in that: include: Step S1, determining the eligibility of the gas distribution of the fully mechanized mining face through the uniformity evaluation value of the gas distribution; Step S2, determining a drilling detection strategy based on the eligibility of the gas distribution of the fully mechanized mining face, determining the relationship between the corresponding hole depth and the hole spacing according to the gas volume per unit time under the corresponding drilling detection strategy, and determining the hole depth and the hole spacing; Step S3, based on the corresponding perforation detection strategy, determine the method for determining the warning value according to the average concentration change, and determine the eligibility of the obtained warning value according to the sound impact evaluation value; Step S4, based on the corresponding drilling detection strategy, determine the eligibility of the hole depth and the hole spacing according to the fluidity evaluation value of the gas in each hole; Step S5, based on the condition that the warning value is unqualified, the adjustment method of the warning value is determined according to the difference between the preset sound impact evaluation value and the sound impact evaluation value, and based on the condition that the hole depth and the hole spacing are unqualified, the adjustment method of the hole depth or the hole spacing is determined according to the ratio or relative difference between the fluidity evaluation value and the preset fluidity evaluation value.

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