Water sump siltation degree measuring and calculating method and system
By obtaining water level data from the water tank, calculating the siltation rate, and plotting a curve, the problem of difficulty in measuring the degree of siltation in the water tank was solved, enabling accurate measurement and management, reducing safety risks, and improving cleaning efficiency and production safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YANKUANG ENERGY GRP CO LTD
- Filing Date
- 2025-12-22
- Publication Date
- 2026-04-21
AI Technical Summary
Existing technology cannot accurately measure the degree of siltation in water tanks, which increases the safety risks of water tank drainage. In particular, there is a lack of effective measurement methods in irregularly shaped water tanks, and the cleaning work lacks data support, resulting in untimely or excessive cleaning, which affects the safe production of coal mines.
By acquiring water level data from the reservoir, calculating the effective and theoretical cross-sectional areas, using the integral method to calculate the siltation rate, and drawing curves and sending early warning information, the reservoir's siltation level can be accurately measured and managed.
It enables accurate calculation of the degree of siltation in water tanks, reduces safety risks, improves cleaning efficiency, lowers cleaning costs, and ensures the safety of coal mine production.
Smart Images
Figure CN121898552A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of siltation degree measurement technology, and in particular to a method and system for measuring the siltation degree of a water tank. Background Technology
[0002] In coal mining operations, mine water inrush is a common and critical issue that requires careful management. Water reservoirs, as a key component of the mine drainage system, primarily function to store mine water inrush and provide a buffer zone for the drainage system. This ensures the stable operation of drainage work under both normal and emergency conditions, maintains a safe underground working environment, and meets the needs of safe coal mine production.
[0003] To address the issue of siltation in the water reservoirs, the current practice is to regularly schedule personnel to manually clean the reservoirs, removing the accumulated silt manually to maintain their effective volume. Based on experience, a cleaning cycle is established for the reservoirs, and cleaning is carried out at predetermined intervals to prevent severe siltation from affecting drainage function.
[0004] However, manual cleaning is not only labor-intensive and inefficient, but also limited by personnel operation and working environment, making it difficult to completely remove silt and resulting in poor cleaning effects. Furthermore, due to differences in geological conditions and water inflow rates among different coal mines, fixed experience cycles cannot accurately adapt to all situations, leading to untimely or excessive cleaning of some silt reservoirs. Especially for irregularly shaped coal mine silt reservoirs, due to special geological conditions, there is a lack of simple and effective means to measure the degree of siltation, forcing cleaning to rely blindly on experience. This lack of effective data support increases drainage safety risks and fails to guarantee the mine's disaster resistance capabilities in the face of water hazards. Summary of the Invention
[0005] This application provides a method and system for calculating the degree of siltation in a water tank, in order to solve the technical problem that the current inability to calculate the siltation in the water tank increases the probability of water tank drainage safety risks.
[0006] The first aspect of this application provides a method for calculating the degree of siltation in a water storage tank, including:
[0007] Obtain water level data from the water tank; the water level data includes: inlet flow rate, discharge volume, and water level;
[0008] Based on the water level data, calculate the effective cross-sectional area of the water level in the water tank;
[0009] Obtain the theoretical cross-sectional area of the water level in the water tank; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water tank;
[0010] The siltation rate within the water tank is calculated based on the effective cross-sectional area and the theoretical cross-sectional area.
[0011] In some embodiments, the step of calculating the effective cross-sectional area of the water level in the reservoir based on the water level data includes:
[0012] Based on the water level data, the effective cross-sectional area of the water level in the reservoir is calculated using an integral method; the effective cross-sectional area is:
[0013] A=[∫(Q 进水 -Q 排水 )dt] / Δh;
[0014] In the formula, Q 进水 For inbound traffic; Q 排水 Δh represents the drainage volume; Δh represents the change in water level within time t.
[0015] In some embodiments, the siltation rate is:
[0016] Siltation rate = (1 - A / A) 理论 )×100%;
[0017] In the formula, A 理论 This is the theoretical cross-sectional area.
[0018] In some embodiments, the method further includes:
[0019] Using the siltation rate at each water level, a first curve graph of water level versus siltation rate is plotted.
[0020] The first graph is sent to a designated device for display and storage; the designated device is an electronic device capable of receiving electronic information.
[0021] In some embodiments, the method further includes:
[0022] Based on the water level data, a second curve graph of water level versus actual drainage volume is plotted.
[0023] Obtain the theoretical drainage capacity of the water tank; the theoretical drainage capacity is the drainage capacity when there is no siltation in the water tank.
[0024] Based on the theoretical drainage volume, a third curve graph of water level versus theoretical drainage volume is plotted.
[0025] The siltation volume is determined based on the second and third curves.
[0026] In some embodiments, the step of determining the sediment volume based on the second curve and the third curve includes:
[0027] Based on the third curve, the first discharge volume of the water tank at the first water level to the second water level is determined;
[0028] Based on the second curve, determine the second discharge volume of the water tank at the first water level to the second water level;
[0029] Calculate the difference between the first drainage volume and the second drainage volume;
[0030] Based on the difference, the siltation volume between the first water level and the second water level is determined.
[0031] In some embodiments, the method further includes:
[0032] Determine whether the accumulated volume is greater than a preset accumulated volume;
[0033] If so, a warning message is sent to the designated device; the warning message includes: the location of the water tank and the volume of silt accumulation in the water tank.
[0034] The second aspect of this application provides a system for calculating the degree of siltation in a water storage tank, including:
[0035] The first acquisition module is configured to acquire water level data of the water tank; the water level data includes: inlet flow rate, discharge volume, and water level.
[0036] The first calculation module is configured to calculate the effective cross-sectional area of the water level in the water tank based on the water level data.
[0037] The second acquisition module is configured to acquire the theoretical cross-sectional area of the water level in the water tank; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water tank;
[0038] The second calculation module is configured to calculate the siltation rate in the water tank based on the effective cross-sectional area and the theoretical cross-sectional area.
[0039] This application provides a method and system for measuring the degree of siltation in a water reservoir. The method includes: acquiring water level data of the water reservoir; the water level data includes: inlet flow rate, drainage volume, and water level; calculating the effective cross-sectional area of the water level in the water reservoir based on the water level data; acquiring the theoretical cross-sectional area of the water level in the water reservoir; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water reservoir; and calculating the siltation rate in the water reservoir based on the effective cross-sectional area and the theoretical cross-sectional area, so as to reduce the probability of water reservoir drainage safety risks by measuring the siltation in the water reservoir. Attached Figure Description
[0040] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0041] Figure 1 This is a flowchart of the method for calculating the siltation level of the upper water tank in this application;
[0042] Figure 2 This is a cross-sectional view of the water tank in this application;
[0043] Figure 3 This is an internal cross-sectional view of the water tank in this application. Detailed Implementation
[0044] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0045] Because some technologies cannot measure the siltation within water tanks, the probability of safety risks associated with water tank drainage increases. To address this technical problem, this application provides a method and system for measuring the degree of siltation in water tanks. The method and system for measuring the degree of siltation in water tanks are described below:
[0046] like Figure 1 The diagram shown is a flowchart of the method for calculating the degree of siltation in the water reservoir in this application.
[0047] The first aspect of this application provides a method for calculating the degree of siltation in a water storage tank, including the following steps:
[0048] S100: Acquire water level data of the water tank; the water level data includes: inlet flow rate, discharge volume, and water level. The inlet flow rate and discharge volume of the water tank are collected by a flow sensor installed at the inlet of the water tank and a flow sensor installed at the pumping end of the water pump; and the water level in the water tank is collected by a water level sensor installed inside the water tank.
[0049] S200: Based on the water level data, calculate the effective cross-sectional area of the water level in the water tank.
[0050] like Figure 3 The image shown is a cross-sectional view of the water tank in this application.
[0051] Specifically, the step of calculating the effective cross-sectional area of the water level in the reservoir based on the water level data includes the following sub-steps:
[0052] S210: Based on the water level data, calculate the effective cross-sectional area of the water level in the reservoir using an integral method; the effective cross-sectional area is:
[0053] A=[∫(Q进水 -Q 排水 )dt] / Δh;
[0054] In the formula, Q 进水 For inbound traffic; Q 排水 Δh represents the drainage volume; Δh represents the change in water level within time t.
[0055] The effective cross-sectional area is:
[0056] A = (Q) 进水 -Q 排水 ) / (Δh / t).
[0057] In practical applications, both the pump's discharge and inflow rates fluctuate. In such cases, it is necessary to use the integral method to calculate the total water volume change.
[0058] ΔV=∫(Q 进水 -Q 排水 )dt=A·Δh;
[0059] Therefore, we adopt A=[∫(Q 进水 -Q 排水 The effective cross-sectional area of the water level in the reservoir is calculated using dt / Δh.
[0060] S300: Obtain the theoretical cross-sectional area of the water level in the water tank; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water tank; due to the irregularity of the water tank, such as Figure 2 As shown, this results in the theoretical cross-sectional area not being a constant, but rather varying with the height H of the water tank.
[0061] Specifically, water storage tanks often exhibit irregular shapes. This irregularity significantly impacts the theoretical cross-sectional area of the water level, rendering it no longer a fixed constant. Unlike regularly shaped water storage tanks where the cross-sectional area changes linearly or according to a specific pattern with height, in irregularly shaped tanks, the theoretical cross-sectional area exhibits a complex and unpredictable variation with height. In other words, the theoretical cross-sectional area varies at different water levels; it may be smaller at lower levels and increase, decrease, or fluctuate as the water level rises, entirely depending on the tank's irregular shape. Therefore, accurately obtaining the theoretical cross-sectional area at different water levels is crucial for a thorough understanding of the water storage characteristics of water storage tanks, water level variation patterns, and subsequent water resource management and utilization.
[0062] S400: Calculate the siltation rate within the water tank based on the effective cross-sectional area and the theoretical cross-sectional area. The siltation rate is:
[0063] Siltation rate = (1 - A / A) 理论 )×100%;
[0064] In the formula, A 理论 This is the theoretical cross-sectional area.
[0065] This application adheres to the law of conservation of mass. In the specific system of a coal mine water sump, a strict balance exists between the mass of water entering and exiting the sump, and the change in water mass corresponding to changes in water level within the sump. Specifically, by installing a high-precision flow monitoring device at the sump inlet, the flow rate information of the water entering the sump, i.e., the sump inlet flow rate, can be obtained in real time and accurately. This data reflects the volume of water entering the sump per unit time, providing a basic input for subsequent calculations. Simultaneously, at the drainage end, the actual drainage volume of the pump is precisely monitored. As a key piece of equipment for sump drainage, the actual drainage volume of the pump directly determines the volume of water discharged from the sump per unit time. Through sensor technology and a data acquisition system, the pump's drainage data can be recorded in real time, ensuring the accuracy and reliability of the data.
[0066] Besides the inlet flow rate and discharge rate, the water level change rate is also an indispensable piece of information in this application. Using a high-precision water level sensor, the water level changes within the reservoir can be monitored in real time, and the water level change rate can be calculated. The water level change rate reflects the rate of increase or decrease in water volume within the reservoir and is closely related to the inlet flow rate and discharge rate. Based on the law of conservation of mass, and combining the real-time monitored inlet flow rate, actual pump discharge rate, and water level change rate, the effective cross-sectional area of the water level within the reservoir can be accurately calculated. After accurately calculating the effective cross-sectional area of the water level within the reservoir, the real-time dynamic measurement of the reservoir's siltation rate is performed. The siltation rate is the proportion of volume occupied by silt within a unit height of the reservoir. By comparing the calculated effective cross-sectional area with the theoretical cross-sectional area of the reservoir in a silt-free state, and combining this with water level information, the current siltation rate of the reservoir can be accurately calculated.
[0067] The siltation rate can be used to accurately estimate the siltation volume, and it is closely related to the total volume of the water reservoir. Using the known geometry of the water reservoir and the current water level, combined with the real-time measured siltation rate, the total volume of silt within the reservoir can be precisely calculated. Coal mine managers can then rationally allocate cleaning time and intensity based on the size of the siltation volume, avoiding over- or under-cleaning, thereby improving cleaning efficiency and reducing costs.
[0068] By effectively reducing siltation rates, safety risks can be mitigated. Severely silted water tanks may experience abnormal water level rises, increasing the risk of overflow. An overflow would not only flood surrounding equipment and facilities but could also trigger electrical faults, short circuits, and other safety accidents, posing a serious threat to coal mine production safety. Furthermore, silt can clog drainage pipes, affecting the normal operation of the drainage system and further exacerbating safety risks. By measuring siltation rates in real time, coal mining enterprises can promptly identify potential safety hazards and take corresponding preventative and remedial measures, thereby effectively reducing safety risks and ensuring the safety of coal mine production.
[0069] The method further includes the following steps:
[0070] S500: Using the siltation rate at each water level, plot the first curve of water level versus siltation rate; since the theoretical cross-sectional area varies with the depth of the reservoir, the value of the theoretical cross-sectional area selected at this time is the value at the same reservoir depth as the effective cross-sectional area; therefore, the first curve of water level versus siltation rate can be plotted.
[0071] S600: The first curve is sent to a designated device for display and storage; the designated device is an electronic device capable of receiving electronic information.
[0072] Specifically, the first graph clearly visualizes the relationship between water level and siltation rate. By observing the curve's trend, one can quickly understand how the siltation rate changes accordingly as the water level rises or falls. For example, if the curve shows an upward trend, it indicates that the siltation rate in the reservoir is continuously increasing as the water level rises, meaning that the accumulation of silt in the reservoir becomes more severe as the water level rises; conversely, if the curve declines, it indicates that the siltation rate decreases when the water level drops, and the siltation situation is alleviated. This intuitive presentation allows relevant personnel to quickly grasp the basic changing patterns between the two without performing complex data analysis.
[0073] The first curve provides an important reference for assessing the siltation status of water reservoirs at different water levels. In actual production, coal mine managers can find the corresponding siltation rate value on the first curve based on the current water level. By comparing the siltation rates at different time periods and water levels, the development speed and severity of siltation in the water reservoir can be accurately determined. For example, if the siltation rate at the same water level continues to rise over a period of time, it indicates that the siltation problem in the water reservoir is worsening and timely cleaning measures are needed; conversely, if the siltation rate remains stable or decreases, it indicates that the current drainage and cleaning strategies may have some effect and can be maintained or appropriately adjusted.
[0074] The method further includes the following steps:
[0075] S700: Based on the water level data, plot a second curve of water level versus actual drainage volume; S800: Obtain the theoretical drainage volume of the water tank; the theoretical drainage volume is the drainage volume when there is no siltation in the water tank; S900: Based on the theoretical drainage volume, plot a third curve of water level versus theoretical drainage volume; S1000: Based on the second curve and the third curve, determine the siltation volume.
[0076] Specifically, the step of determining the sediment volume based on the second curve and the third curve includes the following sub-steps:
[0077] S1010: Based on the third curve, determine the first drainage volume of the water tank at the first water level to the second water level; S1020: Based on the second curve, determine the second drainage volume of the water tank at the first water level to the second water level; S1030: Calculate the difference between the first drainage volume and the second drainage volume; S1040: Based on the difference, determine the siltation volume between the first water level and the second water level.
[0078] Specifically, within the range between the first and second water levels, the volume of water corresponding to the difference calculated above is equivalent to the volume of the water reservoir occupied by silt, i.e., the silt volume. This is because this portion of water should have been discharged during the water level drop, but remained in the water reservoir due to the obstruction of silt, so its volume is equal to the volume of the silt.
[0079] The method further includes the following steps:
[0080] S1100: Determine whether the silt volume is greater than the preset silt volume; the preset silt volume is the silt volume that affects the normal drainage operation of the water tank.
[0081] S1200: If so, send a warning message to the designated device; the warning message includes: the location of the water tank and the volume of silt accumulation in the water tank.
[0082] For example, after the siltation volume is calculated, it is immediately compared with a pre-set preset siltation volume. This preset siltation volume is determined after professional engineering analysis and safety assessment. It comprehensively considers factors such as the design capacity of the water tank, the performance of the drainage equipment, the geological conditions of the mine, and historical data. It is an important threshold for ensuring the safe operation of the water tank (whether it affects the normal drainage work of the water tank).
[0083] If the calculated siltation volume exceeds the preset siltation volume, it means that the siltation in the water tank has exceeded the safe range and may pose a potential threat to the mine's normal drainage and safe production. In this case, an early warning mechanism will be quickly activated, generating a detailed and accurate warning message. This message not only includes the specific location of the water tank so that relevant personnel can quickly pinpoint the problem, but also clearly indicates the current siltation volume within the tank, giving staff a clear understanding of the severity of the issue.
[0084] Subsequently, the warning information is promptly sent to designated devices via pre-set communication channels. These devices are typically mobile terminals, such as smartphones and tablets, equipped by personnel directly involved in water tank management, or large display screens installed in the mine dispatch room. Relevant personnel can receive the warning information immediately and respond swiftly. For example, upon receiving a warning, dispatch room staff will immediately notify the water tank cleaning team to proceed with cleaning operations at the designated water tank, while simultaneously adjusting the operating parameters of the drainage equipment (such as increasing the power of the pumps) to ensure the mine's drainage safety.
[0085] The second aspect of this application provides a system for calculating the degree of siltation in a water storage tank, including:
[0086] The first acquisition module is configured to acquire water level data of the water tank; the water level data includes: inlet flow rate, discharge volume, and water level.
[0087] The first calculation module is configured to calculate the effective cross-sectional area of the water level in the water tank based on the water level data.
[0088] The second acquisition module is configured to acquire the theoretical cross-sectional area of the water level in the water tank; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water tank;
[0089] The second calculation module is configured to calculate the siltation rate in the water tank based on the effective cross-sectional area and the theoretical cross-sectional area.
[0090] It is worth noting that the effects of the above system embodiments can be found in the effects of the above method embodiments, and will not be repeated here.
[0091] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.
Claims
1. A method for calculating the degree of siltation in a water storage tank, characterized in that, include: Obtain water level data from the reservoir; the water level data includes: inlet flow rate, discharge volume, and water level; Based on the water level data, calculate the effective cross-sectional area of the water level in the reservoir; Obtain the theoretical cross-sectional area of the water level in the water tank; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water tank; The siltation rate within the water tank is calculated based on the effective cross-sectional area and the theoretical cross-sectional area.
2. The method for calculating the degree of siltation in a water reservoir according to claim 1, characterized in that, The step of calculating the effective cross-sectional area of the water level in the reservoir based on the water level data includes: Based on the water level data, the effective cross-sectional area of the water level in the reservoir is calculated using an integral method; the effective cross-sectional area is: A=[∫(Q 进水 -Q 排水 )dt] / Δh; In the formula, Q 进水 For inbound traffic; Q 排水 Δh represents the drainage volume; Δh represents the change in water level within time t.
3. The method for calculating the degree of siltation in a water storage tank according to claim 1, characterized in that, The siltation rate is: Siltation rate = (1 - A / A) 理论 )×100%; In the formula, A 理论 This is the theoretical cross-sectional area.
4. The method for calculating the degree of siltation in a water storage tank according to claim 1, characterized in that, The method further includes: Using the siltation rate at each water level, a first curve graph of water level versus siltation rate is plotted. The first graph is sent to a designated device for display and storage; the designated device is an electronic device capable of receiving electronic information.
5. The method for calculating the degree of siltation in a water storage tank according to claim 4, characterized in that, The method further includes: Based on the water level data, a second curve graph of water level versus actual drainage volume is plotted. Obtain the theoretical drainage capacity of the water tank; the theoretical drainage capacity is the drainage capacity when there is no siltation in the water tank; Based on the theoretical drainage volume, a third curve graph of water level versus theoretical drainage volume is plotted. The siltation volume is determined based on the second and third curves.
6. The method for calculating the degree of siltation in a water reservoir according to claim 5, characterized in that, The step of determining the sediment volume based on the second curve and the third curve includes: Based on the third curve, the first discharge volume of the water tank at the first water level to the second water level is determined; Based on the second curve, determine the second discharge volume of the water tank at the first water level to the second water level; Calculate the difference between the first drainage volume and the second drainage volume; Based on the difference, the siltation volume between the first water level and the second water level is determined.
7. The method for calculating the degree of siltation in a water reservoir according to claim 5, characterized in that, The method further includes: Determine whether the accumulated volume is greater than a preset accumulated volume; If so, a warning message is sent to the designated device; the warning message includes: the location of the water tank and the volume of silt accumulation in the water tank.
8. A system for measuring the degree of siltation in a water storage tank, characterized in that, include: The first acquisition module is configured to acquire water level data of the water tank; the water level data includes: inlet flow rate, discharge volume, and water level. The first calculation module is configured to calculate the effective cross-sectional area of the water level in the water tank based on the water level data. The second acquisition module is configured to acquire the theoretical cross-sectional area of the water level in the water tank; the theoretical cross-sectional area is the cross-sectional area of the water level when there is no siltation in the water tank; The second calculation module is configured to calculate the siltation rate in the water tank based on the effective cross-sectional area and the theoretical cross-sectional area.