Mine water sump based sludge height real-time measurement system and method

Abstract

The present application relates to the technical field of coal mine early warning, in particular to a sludge height real-time measurement system and method based on a mine sump, comprising a server and a user end; the server comprises: a data acquisition module, configured to acquire first real-time liquid level data collected by an ultrasonic liquid level sensor installed above a coal mine sump monitoring point; also configured to acquire second real-time liquid level data collected by a pressure type liquid level sensor installed at the bottom of the coal mine sump monitoring point; a first transmission module, configured to transmit the collected first real-time liquid level data and second real-time liquid level data to a hydrological monitoring substation; a second transmission module, configured to upload data of the hydrological monitoring substation to a ground server; and a ground processing module, configured to calculate the real-time height of water quantity and the real-time thickness of sludge in the coal mine sump based on a liquid level measurement formula according to the received first real-time liquid level data and second real-time liquid level data after the corresponding data is received by the ground server.

Description

Technical Field

[0001] This invention relates to the field of coal mine early warning technology, specifically to a real-time silt height measurement system and method based on a mine water tank. Background Technology

[0002] The underground water sump in a coal mine is an indispensable part of the mine drainage system, located in roadways below the various mining levels. As the mining depth increases, the water inflow also increases, with a large amount of water carrying solid particles into the water sump. The solid pollutant content in the mine water is very high. The mine water is discharged into the water sump through drainage ditches, where the solid pollutants settle and accumulate, affecting the sump's capacity and consequently impacting the safety of underground operations.

[0003] During production, mine water tanks need to be regularly dredged and drained to prevent silt from encroaching on the tank space, reducing water capacity, and affecting safe mine production. Most existing dredging systems cannot differentiate between the thickness of silt and the height of water in the mine water tank; they can only measure the liquid level. This makes it impossible to accurately determine the timing of dredging and drainage, greatly increasing the difficulty of these processes. Summary of the Invention

[0004] One of the objectives of this invention is to provide a real-time silt height measurement system and method based on a mine water tank, which can realize the real-time measurement and differentiation of silt thickness and water level in the water tank, reducing the difficulty of judging the timing of dredging and drainage.

[0005] To achieve the above objectives, a real-time sludge height measurement system based on a mine water tank is provided, including a server and a user terminal;

[0006] The server includes:

[0007] The data acquisition module is used to acquire the first real-time liquid level data collected by the ultrasonic liquid level sensor installed above the coal mine water tank monitoring point; it is also used to acquire the second real-time liquid level data collected by the pressure liquid level sensor installed at the bottom of the coal mine water tank monitoring point.

[0008] The first transmission module is used to transmit the collected first real-time liquid level data and second real-time liquid level data to the hydrological monitoring substation.

[0009] The second transmission module is used to upload data from the hydrological monitoring substations to the ground server;

[0010] The ground processing module is used to calculate the real-time water level and silt thickness in the coal mine water tank based on the received first and second real-time liquid level data and the liquid level measurement formula after the ground server receives the corresponding data.

[0011] The liquid level measurement formula is as follows:

[0012]

[0013] In the formula: H1 is the liquid level height at the monitoring point corresponding to the ultrasonic liquid level sensor; ρ s Let ρ be the liquid density of water. n H is the liquid density of the sludge, H2 is the liquid level height at the monitoring point corresponding to the pressure-type liquid level sensor, and H... n H represents the thickness of silt in a coal mine water sump. s This refers to the water level in the coal mine's water sump.

[0014] The user terminal is used to receive the calculated real-time water level and silt thickness.

[0015] The principle and effects of this scheme: This scheme first collects data from sensors above and below the monitoring point of the coal mine water sump, acquiring first and second real-time liquid level data, thus achieving multi-dimensional data monitoring of the coal mine water sump. Then, the collected data is transmitted from the underground coal mine to a ground server via a hydrological monitoring substation. Furthermore, the first and second real-time liquid level data are combined using a liquid level measurement formula to achieve real-time differentiation and calculation of water level and silt thickness in the coal mine water sump. This enables online real-time measurement of silt thickness and water level within the coal mine water sump, providing a basis for subsequent periodic dredging and drainage of the coal mine water sump. In short, it enables real-time measurement and differentiation of silt thickness and water level within the water sump, reducing the difficulty of determining the timing of dredging and drainage.

[0016] Furthermore, multiple ultrasonic level sensors and pressure level sensors are provided, and each ultrasonic level sensor is positioned directly above one of the pressure level sensors.

[0017] Beneficial effects: This solution uses multiple sensors of both types to achieve multi-location measurement within the coal mine water tank, reducing errors in the silt thickness strategy and also reducing the workload of operators. After installation, multiple locations within the water tank can be measured without moving the sensors.

[0018] Furthermore, the server also includes an alarm module, which is used to judge the calculated real-time silt thickness and real-time water height. If the real-time silt thickness is greater than the silt threshold, a first alarm message is issued; if the real-time water height is greater than the water height threshold, a second alarm message is issued.

[0019] The user terminal is used to receive the first alarm information and the second alarm information sent by the server, and generate corresponding processing strategies based on the corresponding alarm information.

[0020] Beneficial effects: The alarm module enables monitoring of water level and silt thickness in coal mine water tanks. When the corresponding threshold is reached, an alarm is triggered, allowing the user to generate a corresponding processing strategy, thereby achieving timely silt removal and drainage operations.

[0021] Furthermore, the server also includes a preprocessing module, which is used to preprocess the first real-time liquid level data and the second real-time liquid level data and filter out interference data after the ground server receives the corresponding data.

[0022] Beneficial effects: In this solution, the preprocessing module filters out interfering data, thereby increasing the reliability and accuracy of the data.

[0023] Furthermore, the preprocessing module includes:

[0024] The first data judgment module is used to judge the consistency of the first real-time liquid level data in the same coal mine water tank. If the first real-time liquid level data is different at a certain moment, the data is judged to be invalid.

[0025] The deletion module is used to delete the first and second real-time liquid level data when the current data is determined to be invalid, and to send a maintenance command to the user terminal.

[0026] Beneficial effects: By judging the consistency of the first real-time liquid level data in the same coal mine water tank, it is possible to quickly determine whether the installation of ultrasonic liquid level sensors needs to be calibrated, which greatly improves the accuracy of subsequent data acquisition.

[0027] Furthermore, the server also includes:

[0028] The prediction module is used to obtain the water level or silt thickness corresponding to the current time, the previous time and the time before that when sending the first alarm information or the second alarm information to the user terminal. Based on the water level or silt thickness corresponding to the current time, the previous time and the time before that, the module predicts the time required for the corresponding water level or silt thickness to reach the danger threshold and generates the corresponding danger prediction time information.

[0029] The information acquisition module is used to acquire the basic information of the corresponding coal mine water tank and the location information of each user terminal; the basic information includes the basic information of the water tank and the location information of the water tank.

[0030] The route determination module is used to generate planned route information and arrival time information for each user terminal based on the location information of the water tank and the location information of each user terminal.

[0031] The analysis module is used to compare the hazard prediction time information with the arrival time information corresponding to each user terminal. If the hazard prediction time information is less than or equal to the arrival time information, it is determined that the user of the user terminal corresponding to the arrival time information cannot go to the coal mine water tank; otherwise, it is determined that the user of the user terminal corresponding to the arrival time information can go to the coal mine water tank.

[0032] The statistics module is used to count the users whose arrival time information corresponds to the user terminal that can reach the coal mine water tank. The users are arranged in ascending order of arrival time information to form the corresponding arrival user table.

[0033] The sending module is used to synchronously send arrival instructions to the corresponding user terminals according to the arrival user table;

[0034] The feedback module is used to receive feedback information from users who have received arrival instructions within a preset time period. It matches the feedback information of each user according to the arrival user table. If the matching feedback information indicates that arrival is possible, the processing task is assigned to the corresponding user.

[0035] Beneficial effects: In this solution, when the first alarm message or the second alarm message is received, it indicates that the corresponding coal mine water tank needs to be processed. At this time, the data corresponding to the current time, the previous time, and the time before that in the coal mine water tank will be obtained, such as the water level. By obtaining the data at these three times, the time when the danger threshold will be reached can be predicted, thereby generating the corresponding danger prediction time information.

[0036] Next, the paths from each user terminal to the coal mine water tank are planned and the required arrival times are calculated. By knowing the arrival times of users at each user terminal, a judgment is made. If the danger prediction time information is less than or equal to the arrival time information, it means that the user has not yet arrived, and the corresponding data has reached the danger threshold, indicating that the user is not feasible. In this way, the numerous users are separated and filtered to select those who can arrive in time. The users are then arranged in ascending order of arrival time information to form the corresponding arrival user table.

[0037] Then, arrival instructions are sent to all users in the arrival user table. Users can then send feedback based on their own circumstances. For example, if a user is far away but has other unfinished business, they can report that they cannot arrive; otherwise, they can report that they can arrive. Feedback is then received within a preset time period, and each user's feedback is checked against the table. This method ensures the fastest possible processing of tasks.

[0038] The present invention also provides a method for real-time measurement of silt height based on a mine water tank, using the above-mentioned real-time silt height measurement system based on a mine water tank. Attached Figure Description

[0039] Figure 1 This is a logic block diagram of a real-time sludge height measurement system based on a mine water tank, according to an embodiment of the present invention. Detailed Implementation

[0040] The following detailed description illustrates the specific implementation method:

[0041] Example 1

[0042] A real-time sludge height measurement system based on a mine water tank, basically as follows: Figure 1 As shown, it includes the server and the user;

[0043] The server includes:

[0044] The data acquisition module is used to acquire first real-time liquid level data collected by an ultrasonic liquid level sensor installed above the monitoring point of the coal mine water sump; and to acquire second real-time liquid level data collected by a pressure-type liquid level sensor installed at the bottom of the monitoring point of the coal mine water sump. Multiple ultrasonic and pressure-type liquid level sensors are provided, with each ultrasonic liquid level sensor positioned directly above one of the pressure-type sensors. In this embodiment, the probe corresponding to the pressure-type liquid level sensor must be installed at the bottom of the coal mine water sump. If there is silt in the sump during installation, a steel pipe or iron rod should be used to insert the probe of the pressure-type liquid level sensor into the bottom of the silt. This embodiment also includes a protective device to protect the probe of the pressure-type liquid level sensor from damage during silt removal, and a fixing device to secure the probe and prevent it from being washed away by the water flow. Furthermore, in this embodiment, the sampling frequencies of the ultrasonic and pressure-type liquid level sensors must be set to the same value, so that the acquired data can be automatically grouped according to time, and the same set of data can be used for calculation.

[0045] The first transmission module is used to transmit the collected first real-time liquid level data and second real-time liquid level data to the hydrological monitoring substation.

[0046] The second transmission module is used to upload data from the hydrological monitoring substation to the ground server. In this embodiment, the data from the hydrological monitoring substation enters the mine ring network through a switch and is then uploaded to the ground server.

[0047] The preprocessing module is used to preprocess the first real-time liquid level data and the second real-time liquid level data after the ground server receives the corresponding data, and to filter out interference data.

[0048] The preprocessing module includes:

[0049] The first data judgment module is used to judge the consistency of the first real-time liquid level data in the same coal mine water tank. If the first real-time liquid level data is different at a certain moment, the data is judged to be invalid. In this embodiment, the data displayed by the ultrasonic liquid level sensor in the same coal mine water tank should be consistent. If they are inconsistent, calibration is required, and the air height, water level and installation height should be remeasured. The specific installation position is 0.5 meters away from the highest liquid level line of the water tank (at least 0.5 meters, it can be slightly higher, but not too much higher).

[0050] The deletion module is used to delete the first and second real-time liquid level data when the current data is determined to be invalid, and to send a maintenance command to the user terminal.

[0051] The ground processing module, after receiving the corresponding data from the ground server, calculates the real-time water level and silt thickness in the coal mine water tank based on the received first and second real-time liquid level data and the liquid level measurement formula. In this embodiment, the heights collected by the two sensors are calculated using corresponding formulas. Specifically...

[0052]

[0053] P = ρ s ×g×H2+P0

[0054] In the formula: H is the distance from the probe of the ultrasonic sensor to the bottom of the liquid being measured, v represents the speed of sound in air, and t... S P0 is the time from ultrasonic wave transmission to reception, P0 is the initial pressure on the pressure-type liquid level sensor, and P is the pressure at the current moment.

[0055] The liquid level measurement formula is as follows:

[0056]

[0057] In the formula: H1 is the liquid level height at the monitoring point corresponding to the ultrasonic liquid level sensor; ρ s Let ρ be the liquid density of water.n H is the liquid density of the sludge, and H2 is the liquid level height at the monitoring point corresponding to the pressure-type liquid level sensor; H n H represents the thickness of silt in a coal mine water sump. s This refers to the water level in the coal mine's water sump.

[0058] The user terminal is used to receive the calculated real-time water level and silt thickness.

[0059] The alarm module is used to judge the calculated real-time silt thickness and real-time water height. If the real-time silt thickness is greater than the silt threshold, the first alarm message is issued; if the real-time water height is greater than the water threshold, the second alarm message is issued.

[0060] The prediction module is used to obtain the water level or silt thickness corresponding to the current time, the previous time and the time before that when sending the first alarm information or the second alarm information to the user terminal. Based on the water level or silt thickness corresponding to the current time, the previous time and the time before that, the module predicts the time required for the corresponding water level or silt thickness to reach the danger threshold and generates the corresponding danger prediction time information.

[0061] The information acquisition module is used to acquire the basic information of the corresponding coal mine water tank and the location information of each user terminal; the basic information includes the basic information of the water tank and the location information of the water tank.

[0062] The route determination module is used to generate planned route information and arrival time information for each user terminal based on the location information of the water tank and the location information of each user terminal.

[0063] The analysis module is used to compare the hazard prediction time information with the arrival time information corresponding to each user terminal. If the hazard prediction time information is less than or equal to the arrival time information, it is determined that the user of the user terminal corresponding to the arrival time information cannot go to the coal mine water tank; otherwise, it is determined that the user of the user terminal corresponding to the arrival time information can go to the coal mine water tank.

[0064] The statistics module is used to count the users whose arrival time information corresponds to the user terminal that can reach the coal mine water tank. The users are arranged in ascending order of arrival time information to form the corresponding arrival user table.

[0065] The sending module is used to synchronously send arrival instructions to the corresponding user terminals according to the arrival user table;

[0066] The feedback module receives feedback information from users upon receiving arrival instructions within a preset time period. It matches the feedback information with the arriving user list, and if a match indicates arrival is possible, the task is assigned to the corresponding user. In this embodiment, for example, when the server issues a first warning signal, indicating that the silt thickness in the coal mine water tank has reached a point requiring cleaning, the module predicts the subsequent increase in silt thickness by using the current, previous, and previous-previous silt thicknesses. This determines the time required for the silt thickness to reach a dangerous threshold, thus establishing the latest time for silt cleaning. For example, the silt thickness might exceed the dangerous threshold after one hour.

[0067] Then, the location information of each user terminal will be obtained, and the planned route information and arrival time of each user terminal will be generated based on the location information of the water tank. For example, at this time, user A's arrival time is 30 minutes, user B's arrival time is 45 minutes, user C's arrival time is 1 hour and 20 minutes, and user D's arrival time is 10 minutes.

[0068] After initial data filtering, it was found that user C's arrival time of 1 hour and 20 minutes was greater than 1 hour, indicating that this user could not carry out the sludge dredging work. Based on this, an arrival schedule was determined, such as D, A, and B.

[0069] At the same time, arrival instructions are sent to the users in the table. For example, although user D is the closest to the coal mine water tank, user D may not be able to arrive within 1 hour due to other matters. In this case, user D will report that they cannot arrive. However, users A and B both report that they can arrive. Then, the processing task will be assigned according to the order on the arrival schedule, that is, it will be assigned to user A, who is earlier in the arrival schedule.

[0070] The user terminal is used to receive the first alarm information and the second alarm information sent by the server, and generate corresponding processing strategies based on the corresponding alarm information.

[0071] This embodiment also discloses a method for real-time measurement of silt height based on a mine water tank, using the aforementioned real-time silt height measurement system based on a mine water tank.

[0072] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical well-known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A real-time sludge height measurement system based on a mine water tank, characterized in that: Including server-side and user-side; The server includes: The data acquisition module is used to acquire the first real-time liquid level data collected by the ultrasonic liquid level sensor installed above the mine water tank monitoring point; it is also used to acquire the second real-time liquid level data collected by the pressure liquid level sensor installed at the bottom of the mine water tank monitoring point. The first transmission module is used to transmit the collected first real-time liquid level data and second real-time liquid level data to the hydrological monitoring substation. The second transmission module is used to upload data from the hydrological monitoring substations to the ground server; The ground processing module is used to calculate the real-time water level and silt thickness in the mine water tank based on the received first and second real-time liquid level data and the liquid level measurement formula after the ground server receives the corresponding data. The liquid level measurement formula is as follows: In the formula: The liquid level height at the monitoring point corresponding to the ultrasonic liquid level sensor; The liquid density of water, The density of the silt, This refers to the liquid level height at the monitoring point corresponding to the pressure-type liquid level sensor. This represents the real-time thickness of silt in the mine's water reservoir. Real-time water level and height in the mine's water tank; The user terminal is used to receive the calculated real-time water level and silt thickness. The server also includes: The prediction module is used to obtain the real-time water level or silt thickness corresponding to the current time, the previous time and the time before that when sending the first alarm information or the second alarm information to the user terminal. Based on the real-time water level or silt thickness corresponding to the current time, the previous time and the time before that, the module predicts the time required for the corresponding real-time water level or silt thickness to reach the danger threshold and generates the corresponding danger prediction time information. The information acquisition module is used to acquire the basic information of the corresponding mine water tank and the location information of each user terminal; the basic information includes the basic information of the mine water tank and the location information of the mine water tank. The route determination module is used to generate planned route information and arrival time information for each user terminal based on the location information of the mine water tank and the location information of each user terminal. The analysis module is used to compare the hazard prediction time information with the arrival time information corresponding to each user terminal. If the hazard prediction time information is less than or equal to the arrival time information, it is determined that the user of the user terminal corresponding to the arrival time information cannot go to the mine water tank; otherwise, it is determined that the user of the user terminal corresponding to the arrival time information can go to the mine water tank. The statistics module is used to count the users whose arrival time information corresponds to the user terminal that can reach the mine water tank. The users are arranged in ascending order of arrival time information to form the corresponding arrival user table. The sending module is used to synchronously send arrival instructions to the corresponding user terminals according to the arrival user table; The feedback module is used to receive feedback information from users who have received arrival instructions within a preset time period. It matches the feedback information of each user according to the arrival user table. If the matching feedback information indicates that arrival is possible, the processing task is assigned to the corresponding user.

2. The real-time sludge height measurement system based on a mine water tank according to claim 1, characterized in that: Multiple ultrasonic level sensors and pressure level sensors are provided, and each ultrasonic level sensor is positioned directly above one of the pressure level sensors.

3. The real-time sludge height measurement system based on a mine water tank according to claim 2, characterized in that: The server also includes an alarm module, which is used to judge the calculated real-time silt thickness and real-time water height. If the real-time silt thickness is greater than the silt threshold, a first alarm message is issued; if the real-time water height is greater than the water threshold, a second alarm message is issued. The user terminal is used to receive the first alarm information and the second alarm information sent by the server, and generate corresponding processing strategies based on the corresponding alarm information.

4. The real-time sludge height measurement system based on a mine water tank according to claim 3, characterized in that: The server also includes a preprocessing module, which is used to preprocess the first real-time liquid level data and the second real-time liquid level data and filter out interference data after the ground server receives the corresponding data.

5. A real-time sludge height measurement system based on a mine water tank according to claim 4, characterized in that: The preprocessing module includes: The first data judgment module is used to judge the consistency of the first real-time liquid level data in the same mine water tank. If the first real-time liquid level data is different at a certain moment, the data is judged to be invalid. The deletion module is used to delete the first and second real-time liquid level data when the current data is determined to be invalid, and to send a maintenance command to the user terminal.

6. A method for real-time measurement of silt height based on a mine water tank, characterized in that: A real-time silt height measurement system based on a mine water tank, according to any one of claims 1-5.

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