Mine water inrush early warning method, system, storage medium and equipment

Abstract

The application discloses a mine water inrush early warning method and system, a storage medium and equipment, and comprises the following steps: selecting relevant factors based on a water guide channel and a water source, respectively monitoring data of each factor based on the selected relevant factors, and acquiring monitoring data; setting a corresponding early warning threshold of each factor; comparing the corresponding early warning threshold of each factor with the acquired monitoring data, dividing different grades of water inrush early warning according to comparison results of different factors and threshold values, grasping changes of the mine according to data changes of the monitoring factors, and based on the monitored data, the monitoring factors can well reflect changes before water inrush in a karst area, so that water inrush characteristics are grasped; the comparison results of different factors and threshold values are used for dividing different grades of water inrush early warning, uncertainty between a previous threshold value and an actual value is reduced, and safety is improved.

Description

Technical Field

[0001] This invention belongs to the field of mine water inrush early warning technology, and relates to a mine water inrush early warning method, system, storage medium and equipment. Background Technology

[0002] Mine water inrush disasters have long been a constraint on safe and economical mining in the coal industry. Once a mine water inrush occurs, it will seriously threaten the lives of underground workers and affect the normal mining operations, causing huge losses.

[0003] Several coal mines in the region are currently developing roadways within the Maokou Formation limestone. Although the Maokou Formation limestone is structurally complete, consisting of massive or thick layers with low porosity and is considered a relatively impermeable layer, and is located close to the coal seam, its development has played a certain role in promoting safe production in coal mines. However, the formation of karst fissures, caves, and underground rivers of varying degrees and scales poses a significant hazard to mine water inrushes as the roadways advance and establish hydraulic connections with these unique structures. Therefore, it is necessary to establish corresponding and effective mine water inrush early warning systems to predict mine water inrushes and respond promptly, thus safeguarding the safe production of coal mines.

[0004] Currently, there is a lack of early warning methods for mine water inrush in karst areas. Existing technologies for mine water inrush early warning mostly rely on monitoring changes in resistivity, acoustic emission, water pressure, and inflow rate, or setting thresholds, to determine whether a water inrush has occurred. However, the relationship between these changes and the occurrence of a water inrush is uncertain. Furthermore, thresholds are generally calculated based on experience or formulas, which may differ from the actual situation at the time of a water inrush, easily leading to false alarms or missed alarms. Moreover, the factors monitored using general methods lack unified standards, making it difficult to achieve the required accuracy for early warning in different regions. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art and provide a method, system, storage medium and device for early warning of mine water inrush.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] A method for early warning of mine water inrush includes the following steps:

[0008] S1: Select relevant factors based on the water diversion channel and water source, monitor the relevant factors based on the selected factors, and obtain the monitoring data;

[0009] S2: Set the early warning thresholds for the relevant factors;

[0010] S3: Compare the warning thresholds corresponding to the relevant factors with the acquired monitoring data, and classify different levels of water inrush warnings based on the comparison results between the relevant factors and the thresholds.

[0011] A further improvement of the present invention is that:

[0012] Step S1 includes the following steps:

[0013] The factor data monitoring for the water guiding channel includes resistivity monitoring, acoustic emission monitoring, stress monitoring, and strain monitoring;

[0014] The factor data monitoring for the water source includes water flow monitoring, water pressure monitoring, and water temperature monitoring.

[0015] Step S2 includes the following steps:

[0016] Among the factors related to the water guiding channel:

[0017] The relationship between the resistivity monitoring data and the threshold is as follows: when A 阈 ≥A n The resistivity factor at that time meets the conditions for sudden water inrush.

[0018] The relationship between the acoustic emission monitoring data and the threshold is as follows: when B 阈 ≤B n The time-sound emission factor achieves the conditions for water inrush.

[0019] The relationship between the stress monitoring data and strain monitoring and the threshold is as follows: when F 阈 ≤F n The stress factor reaches the water inrush condition; when L 阈 ≤L n The time-strain factor achieves the water inrush condition.

[0020] Step S2 includes the following steps:

[0021] Among the water source-related factors:

[0022] The relationship between the water temperature monitoring data and the threshold is as follows: the average water temperature of the gushing water is used as the threshold, and when T... 顶板n ≤T 阈 For the roof water temperature to reach the condition for water inrush; when T 底板n ≥T 阈 This is to ensure that the water temperature at the bottom plate reaches the conditions for a sudden water inrush.

[0023] Step S2 includes the following steps:

[0024] Among the water source-related factors:

[0025] The relationship between the water pressure monitoring data and the threshold is as follows: when H 阈 ≤h nAchieving the conditions for water pressure surge;

[0026] The relationship between the water inflow monitoring data and the threshold is as follows: when Q n ≥Q 阈 The inflow rate factor meets the conditions for sudden water inrush.

[0027] Step S3 includes the following steps:

[0028] The comparison between the water inflow monitoring data and the threshold is used as a necessary condition for determining whether a water inrush has occurred. Based on the relationship between other factors and their corresponding thresholds, different warning levels are set.

[0029] In step S3

[0030] The first alarm response will be triggered when the monitored factor data reaches 90% of the set warning threshold.

[0031] A second alarm response will be triggered when the monitored factor data reaches 110% of the set warning threshold.

[0032] A mine water inrush early warning system includes a data monitoring module, a threshold setting module, and an alarm response module.

[0033] The data monitoring module is used to select relevant factors based on the water diversion channel and water source, monitor the relevant factors based on the selected factors, and obtain monitoring data.

[0034] The threshold setting module is used to set the warning thresholds for relevant factors;

[0035] The alarm response module is used to compare the warning thresholds corresponding to relevant factors with the acquired monitoring data, and to classify different levels of water inrush warnings based on the comparison results between relevant factors and thresholds.

[0036] A terminal device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of any of the methods described in this invention.

[0037] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of any of the methods described in this invention.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] This invention discloses a method for early warning of mine water inrush. First, two basic factors for mine prediction are identified, and relevant factors corresponding to each factor are selected based on these basic factors. Simultaneously, the data of each factor is monitored. Combined with the characteristics of mine water inrush, the early warning threshold corresponding to each factor is determined. Thus, changes in the mine can be understood based on the changes in the monitored factor data. Furthermore, based on the monitored data, the monitored factors can effectively reflect the changes before water inrush in karst areas, thereby understanding the characteristics of water inrush. The comparison results of different factors with the thresholds are used to classify different levels of water inrush early warning, reducing the uncertainty between the previous thresholds and actual values ​​while improving safety.

[0040] Furthermore, in this embodiment of the invention, two alarm responses are set according to the relationship between monitoring data and threshold, which overcomes certain errors and the occurrence of false alarms and missed alarms, making it more feasible. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the process of the present invention;

[0043] Figure 2 This is a schematic diagram illustrating the early warning registration division of the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0050] The present invention will now be described in further detail with reference to the accompanying drawings:

[0051] See Figure 1 This invention discloses a mine water inrush early warning method, comprising the following steps:

[0052] Step 1: Select relevant factors based on the water diversion channel and water source, monitor the data of each factor based on the selected relevant factors, and obtain the monitoring data;

[0053] Considering that the occurrence of mine water inrush disasters caused by hidden karst caves in karst areas is closely related to the sudden changes in the stress field, seepage field and displacement field, which cause changes in the water conduction channels and water sources.

[0054] Resistivity, acoustic emission, and stress-strain were selected as the monitoring parameters for the water-conducting channels.

[0055] Water temperature, water pressure, and water flow rate were selected as the monitoring parameters for the water source.

[0056] Correspondingly, resistivity detectors, acoustic emission monitors, stress-strain monitors, water temperature monitors, water pressure monitors, and inflow rate monitors are installed.

[0057] Specifically, the resistivity monitor uses a specialized resistivity sensor to monitor resistivity signals and transmits the data to a ground-based intelligent terminal system via a signal transmission module, enabling real-time monitoring of acoustic emission information and storage of historical data.

[0058] Specifically, the acoustic emission monitor uses a dedicated acoustic emission system to monitor acoustic emission signals and transmits the data information to the ground intelligent terminal system through a signal transmission module, thereby realizing real-time monitoring of acoustic emission information and storing historical data.

[0059] Specifically, the stress-strain monitor uses specialized stress and displacement sensors to monitor stress and displacement changes in the surrounding rock and transmits the data to a ground-based intelligent terminal system via a signal transmission module, enabling real-time monitoring of acoustic emission information and storage of historical data.

[0060] Specifically, the water temperature monitor uses a specialized temperature probe to monitor changes in the temperature of the gushing water and transmits the data to a ground-based intelligent terminal system via a signal transmission module, enabling real-time monitoring of water temperature information and storage of historical data.

[0061] Specifically, the water pressure monitor uses a specialized pore water pressure gauge to monitor changes in pore water pressure in the tunnel, and transmits the data to the ground intelligent terminal system through a signal transmission module to achieve real-time monitoring of water pressure information and storage of historical data.

[0062] Specifically, the water inflow monitor uses a dedicated water sensor to monitor changes in water inflow and transmits the data to a ground-based intelligent terminal system via a signal transmission module, enabling real-time monitoring of water inflow information and storage of historical data.

[0063] Step 2: Set the warning threshold for each factor;

[0064] Considering the different geographical environments and underground spaces of various coal mines, the threshold values ​​vary from mine to mine, and even for the same mine at different mining stages. Therefore, appropriate threshold prediction intervals can be set according to actual conditions. Among these, resistivity, acoustic emission, and stress-strain data describe the water conduit channel, while water temperature, water pressure, water inflow, and water quality describe the water source.

[0065] Specifically:

[0066] The relationship between resistivity monitoring data and threshold is as follows:

[0067] Specifically, resistivity is affected by the water content of the surrounding rock. Water has a lower resistivity than rock strata. When a water inrush occurs, the resistivity decreases, gradually approaching the resistivity of the water inrush. Therefore, the water inrush resistivity is used as a threshold. When A 阈 ≥A n The resistivity factor at that time meets the conditions for sudden water inrush.

[0068] The relationship between acoustic emission monitoring data and threshold is as follows:

[0069] Acoustic emission is influenced by the energy released from the fracturing of the surrounding rock mass. As the degree of fracturing increases, the acoustic emission signal gradually rises, reaching its maximum during a water inrush and then rapidly decreasing. Therefore, the historical maximum acoustic emission signal is used as a threshold. When B... 阈 ≤B n The time-sound emission factor achieves the conditions for water inrush.

[0070] The relationship between stress monitoring data, strain monitoring data, and thresholds is as follows:

[0071] The stress-strain relationship manifests as a sudden water inrush, where stress concentration rises slowly and then abruptly decreases to a minimum, while displacement reaches its maximum. Therefore, the maximum values ​​of historically monitored stress and strain are used as thresholds. When F... 阈 ≤F n The stress factor reaches the water inrush condition; when L 阈 ≤L n The time-strain factor achieves the water inrush condition.

[0072] The relationship between water temperature monitoring data and threshold is as follows:

[0073] When a water inrush occurs, its temperature changes due to replenishment from other water sources. Generally, for roof inrushes, the water temperature decreases as it penetrates the upper aquifer, while for floor inrushes, the water temperature increases as it penetrates the lower aquifer. Therefore, for both roof and floor inrushes, the average temperature of the inrushing water is set as a threshold. When T... 顶板n ≤T 阈 For the roof water temperature to reach the condition for water inrush; when T 底板n ≥T 阈 This is to ensure that the water temperature at the bottom plate reaches the conditions for a sudden water inrush.

[0074] In this embodiment, whether the water temperature of the top plate reaches the water inrush condition or the water temperature of the bottom plate reaches the water inrush condition, it constitutes the water temperature factor reaching the water inrush condition.

[0075] The relationship between water pressure monitoring data and threshold is as follows:

[0076] When the water pressure is too high, groundwater will breach the impermeable layer and flood into the tunnel, causing a slow increase followed by a sudden decrease in pressure. When H... 阈 ≤h n The conditions for water pressure surge were met.

[0077] The relationship between water inflow monitoring data and threshold is as follows:

[0078] The inflow rate can be understood as a function that fluctuates within a certain range over a certain period of time. Exceeding this range is considered a low-probability event, leading to a sudden water inrush; conversely, exceeding this range does not. Assume the inflow rate approximately follows the pattern x ~ N(μ, σ). 2 The normal distribution of Q: Therefore, taking the upper limit of the confidence interval of the normal distribution with a mean of 95% as an example, the threshold is set. n ≥Q 阈 The inflow rate factor meets the conditions for sudden water inrush.

[0079] The specific calculation process is as follows: Formula (1) calculates the upper and lower limits of the confidence interval with a confidence level of 95% that follows a normal distribution. In this embodiment of the invention, the upper limit is used as the warning threshold.

[0080] Further:

[0081]

[0082]

[0083] Step 3: Compare the warning thresholds corresponding to each factor with the acquired monitoring data, and classify different levels of flood warnings based on the comparison results of different factors and thresholds.

[0084] Mine water inrush is closely related to water inflow. It can be assumed that even with well-developed water channels, water inrush will not occur without sufficient water source. Water inflow is considered a necessary condition for water inrush, and different early warning levels are achieved by correlating other factors.

[0085] For example, if the water flow does not reach the warning threshold, but one or more of other factors such as resistivity, acoustic emission, stress, strain, water temperature, and water pressure reach the warning threshold, then the conditions for mine water inrush warning are not met.

[0086] A Level 1 warning is issued only when the water inflow reaches the warning threshold.

[0087] A level-two warning is issued when the water inflow reaches the warning threshold, and any one of the following factors—resistivity, acoustic emission, stress, strain, water temperature, and water pressure—also reaches the warning threshold.

[0088] A Level 3 warning is issued when any two of the factors reach the warning threshold, and so on, until all of the factors reach the warning threshold, which is a Level 7 warning.

[0089] Furthermore, Level 1 is the lowest warning level, and Level 7 is the highest. The higher the warning level, the greater the degree of danger.

[0090] Furthermore, to avoid errors, a first alarm response is triggered when the monitored data reaches 90% of the set threshold, and a second alarm response is triggered when the monitored data reaches 110% of the set threshold. This two-stage alarm response eliminates false alarms and missed alarms caused by errors, and also provides time for the underground workers to evacuate.

[0091] Specifically, the first alarm response alerts miners to an impending danger and the need to prepare for evacuation. The second alarm response then alerts miners that the danger level has increased and urges them to evacuate immediately. Setting the alarm threshold to use interval-based segmented alarms enhances the reliability of the predictions and provides miners with more time to evacuate, thus ensuring their safety.

[0092] This invention also discloses a mine water inrush early warning system, including a data monitoring module, a threshold setting module, and an alarm response module;

[0093] The data monitoring module is used to select relevant factors based on the water diversion channel and water source, monitor each factor based on the selected relevant factors, and obtain monitoring data.

[0094] The data monitoring module is connected to the ground intelligent terminal through the signal transmission unit, and the ground intelligent terminal is connected to the alarm response module through the signal transmission unit. The power supply module provides the power required for the operation of the entire mine water inrush early warning system.

[0095] The data monitoring module is used to sense and generate various data information in the mine;

[0096] The threshold setting module is used to set the warning threshold for each factor;

[0097] The alarm response module is used to compare the warning thresholds corresponding to each factor with the acquired monitoring data, and to classify different levels of flood warnings based on the comparison results of different factors and thresholds.

[0098] The ground-based intelligent terminal compares the data information transmitted by the data monitoring module with the set threshold to determine whether the conditions for mine water inrush have been met, and determines the warning level based on the degree of achievement. When the monitoring data reaches 90% of the set threshold, the first alarm response is initiated, and when the monitoring data reaches 110% of the set threshold, the second alarm response is initiated.

[0099] Furthermore, considering the different geographical environments and underground spaces of each coal mine, the threshold values ​​are different for different coal mines, and the same coal mine has different threshold values ​​at different mining stages. Therefore, the corresponding threshold prediction intervals can be set according to the actual situation.

[0100] A schematic diagram of a terminal device according to an embodiment of the present invention. The terminal device of this embodiment includes: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps in the various method embodiments described above. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the various device embodiments described above.

[0101] The computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention.

[0102] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0103] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0104] The memory can be used to store the computer program and / or module. The processor implements various functions of the terminal device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0105] If the modules / units integrated in the terminal device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0106] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for early warning of mine water inrush, characterized in that, Includes the following steps: S1: Select relevant factors based on the water diversion channel and water source, monitor the relevant factors based on the selected factors, and obtain monitoring data; S2: Set the early warning thresholds for the relevant factors; S3: Compare the warning thresholds corresponding to the relevant factors with the acquired monitoring data, and classify different levels of water inrush warnings based on the comparison results between the relevant factors and the thresholds. Step S1 includes the following steps: Factor data monitoring for the water guiding channel includes resistivity monitoring, acoustic emission monitoring, stress monitoring, and strain monitoring; Monitoring of water source factors includes inflow monitoring, water pressure monitoring, and water temperature monitoring; Step S2 includes the following steps: Among water-related factors: The relationship between water temperature monitoring data and threshold is as follows: the average water temperature of the incoming water is used as the threshold. For the roof water temperature to reach the conditions for sudden water inrush; when To ensure that the bottom water temperature reaches the conditions for a sudden water inrush; Step S2 includes the following steps: Among the factors related to water diversion channels: The relationship between resistivity monitoring data and threshold is as follows: when The resistivity factor at that time meets the conditions for sudden water inrush. The relationship between acoustic emission monitoring data and threshold is as follows: when The time-sound emission factor achieves the conditions for water inrush. The relationship between stress monitoring data and strain monitoring data and thresholds is as follows: when The stress factor reaches the water inrush condition; when The time-strain factor achieves the water inrush condition; Step S2 includes the following steps: Among water-related factors: The relationship between water pressure monitoring data and threshold is as follows: when Achieving the conditions for water pressure surge; The relationship between water inflow monitoring data and threshold is as follows: when The inflow rate factor meets the conditions for sudden water inrush. Step S3 includes the following steps: The comparison between the water inflow monitoring data and the threshold is used as a necessary condition for determining whether a water inrush has occurred. Different warning levels are set according to the relationship between other factors and their corresponding thresholds. In step S3, The first alarm response will be triggered when the monitored factor data reaches 90% of the set warning threshold. A second alarm response will be triggered when the monitored factor data reaches 110% of the set warning threshold. If the water inflow does not reach the warning threshold, but one or more of other resistivity, acoustic emission, stress, strain, water temperature and water pressure reach the warning threshold, then the conditions for mine water inrush warning are not met. A Level 1 warning is issued only when the water inflow reaches the warning threshold. A Level 2 warning is issued when the water inflow reaches the warning threshold, and any one of the following factors—resistivity, acoustic emission, stress, strain, water temperature, and water pressure—reaches the warning threshold simultaneously. A Level 3 warning is issued when any two of the factors reach the warning threshold, and so on. A Level 7 warning is issued when all factors reach the warning threshold.

2. A mine water inrush early warning system according to claim 1, characterized in that, It includes a data monitoring module, a threshold setting module, and an alarm response module; The data monitoring module is used to select relevant factors based on the water diversion channel and water source, monitor the relevant factors based on the selected factors, and obtain monitoring data. The threshold setting module is used to set the warning thresholds for relevant factors; The alarm response module is used to compare the warning thresholds corresponding to relevant factors with the acquired monitoring data, and to classify different levels of water inrush warnings based on the comparison results between relevant factors and thresholds.

3. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in claim 1.

4. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in claim 1.

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