Water volume management method, system, equipment and storage medium for non-coal mine tailing ponds

Abstract

The present application relates to the technical field of tailings stacking, and provides a water volume management method, system, device and storage medium for a non-coal mine tailings pond. The method includes: determining the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the incoming tailings indexes; determining the water loss volume according to the water volume intercepted by the deposited tailings, the evaporation volume of the water surface in the pond area, the seepage volume of the pond area and the seepage volume of the dam body; determining the water volume balance value according to the water volume brought in by the tailings slurry, the water loss volume and the water return volume requirement; and determining the normal production water level according to the water volume balance value, the three-dimensional data of the tailings pond, the designed highest flood level, the flood regulation storage capacity and the clarification distance. The water volume management method for the non-coal mine tailings pond provided by the present application can accurately calculate the water volume balance value based on the detection results during the operation of the tailings pond, and then determine the normal production water level based on the water volume balance value, so as to improve the accuracy of the water volume management of the tailings pond and the safety of the tailings pond.

Description

Technical Field

[0001] The present application relates to the technical field of tailings stacking, and specifically relates to a water volume management method, system, device and storage medium for a non-coal mine tailings pond. Background Art

[0002] The water volume balance management of a metal mine tailings pond is an important part of the production management and safety management of the tailings pond. If the management of the water volume balance of the tailings pond is reasonable, the water return volume can be increased, enabling the repeated recycling of water resources; it can also control the water level of the tailings pond to ensure the safety of the tailings pond.

[0003] In the prior art, the water volume balance management of the tailings pond is usually only carried out in the design stage. For example, among the multiple parameters affecting the water volume balance, the rainfall runoff is estimated according to the annual runoff total and the monthly distribution coefficient of the annual runoff; the water volume brought in by the tailings slurry is estimated according to the designed production capacity; the water leakage volume in the reservoir area is estimated according to the annual height of the permeable water layer, etc. Although managing the water volume balance in the design stage has certain reference significance, due to the lack of combination with the actual situation, the water volume balance management is not accurate enough.

[0004] Therefore, in the prior art, there is a lack of a method for analyzing and intelligently managing the water volume of an operating tailings pond in combination with the actual situation. Summary of the Invention

[0005] To solve the above problems, the embodiments of the present application provide a water volume management method, system, device and storage medium for a non-coal mine tailings pond. By detecting the indexes of the tailings during the process of discharging the tailings into the tailings pond to determine the water volume balance value, and determining and adjusting the normal production water level based on the flood control requirements and production requirements, the water volume management of the non-coal mine tailings pond is realized.

[0006] The embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, the embodiments of the present application provide a water volume management method for a non-coal mine tailings pond, the method including:

[0008] Determine the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the indexes of the incoming tailings;

[0009] Determine the water loss volume according to the water volume intercepted by the deposited tailings, the water surface evaporation volume in the reservoir area, the water leakage volume in the reservoir area and the water leakage volume of the dam body;

[0010] Determine the water volume balance value according to the water volume brought in by the tailings slurry, the water loss volume and the water return volume requirement;

[0011] Determine the normal production water level according to the water volume balance value, the three-dimensional data of the tailings pond, the designed highest flood level, the flood regulation storage capacity and the clarification distance.

[0012] Optionally, based on the test results of the indexes of the tailings stored in the repository, determine the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings, including:

[0013] During the process of discharging tailings into the tailings repository, test the flow rate of the tailings slurry, the concentration of the tailings slurry, the specific gravity of the tailings, and the dry bulk density of the deposited tailings;

[0014] Based on the test results of the flow rate of the tailings slurry, the concentration of the tailings slurry, the specific gravity of the tailings, and a specific time period, determine the water volume brought in by the tailings slurry and the amount of tailings discharged;

[0015] Based on the test results of the specific gravity of the tailings and the dry bulk density of the deposited tailings and the amount of tailings discharged, determine the water volume intercepted by the deposited tailings.

[0016] Optionally, based on the water volume intercepted by the deposited tailings, the evaporation volume of the water surface in the reservoir area, the seepage volume of the reservoir area, and the seepage volume of the dam body, determine the water loss, including:

[0017] Based on the evaporation depth observed by an evaporation pan in the area near the tailings repository and an empirical conversion coefficient, determine the evaporation volume of the water surface in the reservoir area;

[0018] Based on geological data, determine the seepage volume of the reservoir area;

[0019] Based on the test results of the seepage water intercepted by the cut-off dam under the dam detected by a seepage flowmeter, determine the seepage volume of the dam body;

[0020] Based on the sum of the water volume intercepted by the deposited tailings, the evaporation volume of the water surface in the reservoir area, the seepage volume of the reservoir area, and the seepage volume of the dam body, determine the water loss.

[0021] Optionally, based on the water volume brought in by the tailings slurry, the water loss, and the water return requirement, determine the water balance value, including:

[0022] Based on the ore dressing production plan, determine the water return requirement;

[0023] Based on the difference between the sum of the water loss and the water return requirement and the water volume brought in by the tailings slurry, determine the water balance value.

[0024] Optionally, based on the water balance value, the three-dimensional data of the tailings repository, the design highest flood level, the flood regulation storage capacity, and the clarification distance, determine the normal production water level, including:

[0025] Based on the three-dimensional data, the design highest flood level, and the flood regulation storage capacity, determine the control water level;

[0026] Based on the three-dimensional data and the clarification distance, determine the clarified water level;

[0027] Based on the water balance value, determine the regulation storage capacity;

[0028] Determine the normal production water level based on three-dimensional data, regulating reservoir capacity, controlling water level, and clarifying water level.

[0029] Optionally, the method further includes:

[0030] Predict the precipitation runoff based on meteorological information;

[0031] Determine the return water volume based on the precipitation runoff and the designed maximum flood level;

[0032] Adjust the planned water consumption according to the return water volume.

[0033] Optionally, the method further includes:

[0034] Monitor the real-time precipitation and determine the inflow runoff based on the monitoring results;

[0035] Determine the surplus or deficit water volume based on the inflow runoff, the water volume brought in by the tailings slurry, the water loss, and the demand for return water volume.

[0036] In a second aspect, an embodiment of the present application provides a water volume management system for a non-coal mine tailings reservoir. The system includes:

[0037] A detection result calculation unit for determining the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the incoming tailings indexes;

[0038] A water loss calculation unit for determining the water loss according to the water volume intercepted by the deposited tailings, the evaporation amount of the reservoir area water surface, the seepage amount of the reservoir area, and the seepage amount of the dam body;

[0039] A water balance calculation unit for determining the water balance value according to the water volume brought in by the tailings slurry, the water loss, and the demand for return water volume;

[0040] A production water level determination unit for determining the normal production water level according to the water balance value, the three-dimensional data of the tailings reservoir, the designed maximum flood level, the flood regulation reservoir capacity, and the clarification distance.

[0041] In a third aspect, an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-mentioned water volume management method for a non-coal mine tailings reservoir are implemented.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is instructed by a processor, the steps of the above-mentioned water volume management method for a non-coal mine tailings reservoir are implemented.

[0043] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0044] The water volume management method for non-coal mine tailing ponds provided by this application determines the water volume brought in by the tailing slurry and the water volume intercepted by the deposited tailings based on the detection results of the indexes of the incoming tailings; determines the water loss based on the water volume intercepted by the deposited tailings, the evaporation volume of the water surface in the pond area, the seepage volume of the pond area, and the seepage volume of the dam body; determines the water volume balance value based on the water volume brought in by the tailing slurry, the water loss, and the water return requirement; and determines the normal production water level based on the water volume balance value, the three-dimensional data of the tailing pond, the designed highest flood level, the flood regulation storage capacity, and the clarification distance. The water volume management method for non-coal mine tailing ponds provided by this application can accurately calculate the water volume balance value based on the real-time detection results during the operation of the tailing pond, and then determine the normal production water level based on the water volume balance value, thereby improving the accuracy of the water volume management of non-coal mine tailing ponds and enhancing the safety of non-coal mine tailing ponds. Description of the Drawings

[0045] The drawings described herein are used to provide a further understanding of this application and form a part of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0046] Figure 1 Shows a schematic flow chart of the water volume management method for non-coal mine tailing ponds according to an embodiment of this application;

[0047] Figure 2 Shows a schematic flow chart of the water volume management method for non-coal mine tailing ponds according to another embodiment of this application;

[0048] Figure 3 Shows a schematic structural diagram of the water volume management system for non-coal mine tailing ponds according to an embodiment of this application;

[0049] Figure 4 Shows a schematic structural diagram of a computer device according to an embodiment of this application. Detailed Embodiments

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0051] The concept of this application is: to determine the water volume balance value by detecting the indexes of the tailings during the process of discharging the tailings into the tailing pond, and to determine and adjust the normal production water level based on flood control requirements and production requirements, thereby realizing the water volume management of non-coal mine tailing ponds.

[0052] First, the implementation scenario of this application is introduced.

[0053] In the prior art, the water balance calculation of tailing ponds is mainly estimated during the design stage. For example, for the parameters involved in the water balance calculation (including rainfall runoff, water volume brought in by tailing slurry, seepage water volume, etc.), estimations are often made based on the mine production plan in combination with climatic and topographic conditions. For instance, the rainfall runoff can be estimated according to the total annual runoff and the monthly distribution coefficient of the annual runoff, the water volume brought in by tailing slurry is estimated according to the designed production capacity of the mine production, and the seepage water volume is estimated according to the height of the permeable water layer per year, etc.

[0054] During the operation and use stage of the tailing pond, the actual incoming water data, loss data, return water data, etc. can be obtained by detecting the indicators of the incoming tailings. Calculating the water balance of the tailing pond using the detected data can greatly improve the accuracy compared to the estimation during the design stage. Therefore, this application proposes a method for intelligent management of the water volume of non - coal mine tailing ponds based on the detection results during the operation and use stage.

[0055] The following describes this application in detail through specific embodiments.

[0056] Figure 1 The flow diagram of the water volume management method for non - coal mine tailing ponds proposed in an embodiment of this application is shown. According to Figure 1 As shown, the method of this embodiment includes steps S110 to S140:

[0057] Step S110, determine the water volume brought in by tailing slurry and the water volume intercepted by deposited tailings according to the detection results of the indicators of the incoming tailings.

[0058] During the process of tailings being discharged into the tailing pond, the indicators of the incoming tailings can be detected. The detection results can correspond to a specific duration of the incoming tailings, and this specific duration can be one day or one week, etc. In order to obtain detection results with unified metrics, it is necessary to determine the detection results under the same specific duration. During detection, the indicators of the incoming tailings can be continuously detected. For example, if the specific duration is one day, continuously detect the indicators of the incoming tailings, and determine the detection results of the indicators of the incoming tailings within one - day duration through the detected indicator values and / or accumulated indicator values. Or during detection, the indicators of the incoming tailings can be detected at intervals of a specific duration, and determine the detection results of the indicators of the incoming tailings within the specific duration according to the detected indicator values and / or the indicator change values within this interval of the specific duration.

[0059] The indicators can include but are not limited to: tailing slurry flow rate, tailing slurry concentration, tailing particle size, tailing specific gravity, dry bulk density of tailing accumulation, etc.

[0060] The tailings stored in the reservoir mainly include two parts, one is the water brought in by the tailings slurry, and the other is the tailings solids. Based on the detection results of indicators such as the tailings slurry flow rate, tailings slurry concentration, and tailings specific gravity, the amount of water brought in by the tailings slurry and the amount of tailings discharged can be determined. The amount of water brought in by the tailings slurry can be used as the incoming water data for the water management of the non-coal mine tailings reservoir. When detecting the tailings slurry flow rate, an on-line monitoring flowmeter installed on the tailings conveying pipeline can be used to directly detect the tailings slurry flow rate, or the tailings slurry flow rate can be indirectly determined according to the detected mill flow rate and concentrate slurry flow rate. When detecting the tailings slurry concentration, an on-line monitoring densitometer installed on the tailings conveying pipeline can be used to directly detect the tailings slurry concentration, or the tailings slurry concentration can be indirectly determined according to the detected mill output flow rate, mill output concentration, concentrate slurry flow rate, and concentrate slurry concentration. When detecting the tailings specific gravity, an X-ray tube installed on the tailings conveying pipeline can be used to directly detect the tailings specific gravity, or off-line detection can be carried out by extracting tailings samples using methods such as the liquid level gauge method, specific gravity and center of gravity measurement method, and gas buoyancy method.

[0061] The water intercepted by the deposited tailings can be determined according to the amount of tailings discharged, the tailings specific gravity, and the dry bulk density of the tailings deposit. When detecting the dry bulk density of the tailings deposit, the dry bulk density of the tailings deposit can be directly detected after the deposited tailings reach a certain quantity, or the dry bulk density of the tailings deposit can be estimated by the tailings particle size when the deposited tailings do not reach a certain quantity. The tailings particle size can be directly detected by an on-line particle size analyzer installed on the tailings conveying pipeline, or estimated according to the monitoring results of the mill particle size analyzer.

[0062] Step S120, determine the water loss according to the water intercepted by the deposited tailings, the evaporation amount of the reservoir area water surface, the seepage amount of the reservoir area, and the seepage amount of the dam body.

[0063] The water loss is used to indicate the loss data of the water management of the non-coal mine tailings reservoir. The loss data can but is not limited to include the evaporation amount of the reservoir area water surface, the water intercepted by the deposited tailings, the seepage amount, and other water consumption amounts. Among them, the seepage amount includes the seepage amount of the dam body and the seepage amount of the reservoir area that penetrates into the groundwater.

[0064] The evaporation amount of the reservoir area water surface can be determined based on the detection results or calculated based on the empirical results. For example, the evaporation amount of the reservoir area water surface within a specific time period can be estimated according to parameters such as the evaporation observation data of the meteorological station or small pool, the average temperature, and the sunshine hours, or the evaporation amount of the reservoir area water surface within a specific time period can be determined based on the evaporation depth observed by the evaporation pan in the area near the tailings reservoir and the empirical conversion coefficient.

[0065] The leakage water volume of the reservoir area can be determined through simulation or based on empirical formulas according to geological data. For example, in the case of determining the geological conditions of a non-coal tailings pond, seepage simulation software can be used to determine the seepage path and the seepage volume per unit width of groundwater at each section of the non-coal tailings pond, so as to further determine the leakage water volume of the reservoir area within a specific time period. Another example is that the seepage loss can be determined by combining the hydrogeological parameters of the non-coal tailings pond, and the leakage water volume of the reservoir area within a specific time period can be determined based on the seepage loss. The seepage loss can be used to indicate the height of the historical annual average seepage water layer.

[0066] The leakage water volume of the dam body can be intercepted by setting up a cut-off dam at the place where the flowing water can be collected downstream of the tailings dam to intercept the seepage water under the dam, and the seepage water volume of the dam body can be detected by a seepage water flowmeter.

[0067] Step S130, determine the water balance value according to the water volume brought in by the tailings slurry, the loss water volume, and the water return requirement.

[0068] The planned water return requirement can be determined through the mine production plan. The planned water return requirement can be, but is not limited to, the daily water return requirement, the monthly water return requirement, the annual water return requirement, etc. Through the planned water return requirement, determine the water return requirement within a specific time period that is the same as the water volume brought in by the tailings slurry and the loss water volume.

[0069] The water volume brought in by the tailings slurry can be used as the incoming water data, the loss water volume can be used as the loss data, and the water return requirement can be used as the water return data. The loss data and the water return data together are used as the water loss data. The water balance value is used to indicate the difference value between the incoming water data and the water loss data. That is, the water balance value can be the loss water volume plus the water return requirement minus the water volume brought in by the tailings slurry.

[0070] The water balance value is generally a value greater than 0. When the water balance value is very close to 0, it indicates that the water volume is in a basically balanced state, and the water return requirement can be basically met without precipitation replenishment, so only a small amount of regulating storage capacity needs to be reserved. If the water balance value is large, it indicates that the water volume is in a very unbalanced state, and the precipitation runoff needs to be stored in the tailings pond during precipitation to supplement the water return requirement during the dry season without precipitation, so a large regulating storage capacity is required.

[0071] Step S140, determine the normal production water level according to the water balance value, the three-dimensional data of the tailings pond, the design highest flood level, the flood regulation storage capacity, and the clarification distance.

[0072] Compared with other industrial wastewater, the quantity of tailings water is large and the water quality is good, which can meet the water requirements of the concentrator. Therefore, the recycled water from the tailings reservoir often accounts for a large proportion in the production water supply of the concentrator, and some even serve as the main water source. Therefore, when the water balance value is large, it is usually hoped that the tailings reservoir stores as much water as possible during the flood season to increase the recycled water volume, but this will put the tailings reservoir in a high water level situation; in order to ensure the safety of the tailings embankment, it is required that the tailings reservoir be in a low water level situation as much as possible. To balance the contradiction between increasing the recycled water volume and ensuring the safety of the dam body, it is necessary to determine the normal production water level of the tailings reservoir according to the water balance value on the premise of ensuring the safety of the tailings embankment and production requirements.

[0073] A preset threshold can be set (such as 10 km 3 ). When the water balance value does not exceed this preset threshold, it indicates that the water volume is in a basically balanced state, and then the regulating storage capacity can be determined based on the set preset threshold. Furthermore, according to the regulating storage capacity, the three-dimensional data of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity, and the clarification distance, the normal production water level can be determined.

[0074] When the water balance value exceeds this preset threshold, it indicates that the water volume is in a very unbalanced state, and then the regulating storage capacity required to meet the recycled water volume demand can be determined based on the water balance value and the dry season length. Taking a specific time period of one day as an example, the dry season length can be the total number of days of the dry season in a year; or, taking a specific time period of one week as an example, the dry season length can be the total number of weeks of the dry season in a year, etc. Furthermore, according to the regulating storage capacity, the three-dimensional data of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity, and the clarification distance, the normal production water level can be determined.

[0075] During the design stage of the tailings reservoir, in order to ensure the safety of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity, the clarification distance, etc. are limited. The designed highest flood level is used to indicate the height of the designed highest limit water level to ensure the safety of the tailings reservoir; the flood regulation storage capacity is used to store floodwater and indicates the volume between the control water level and the designed highest flood level; the control water level is used to indicate the highest water level when the tailings reservoir can operate normally; the clarification distance is used to indicate the designed shortest limit length to ensure water quality clarification, and the clarification distance can be converted into the corresponding clarified water level based on the three-dimensional data of the tailings reservoir. In descending order of height values, the sorting of each water level line is the designed highest flood level, the control water level, the normal production water level, and the clarified water level.

[0076] The determined normal production water level is between the control water level and the clarified water level, and is used to indicate the restricted water level of the tailings pond before the arrival of the flood season. The normal production water level is restricted by the regulating storage capacity, the control water level, and the clarified water level. That is, the backwater regulation height between the determined normal production water level and the control water level should meet the height value calculated based on the control water level, the three-dimensional data of the tailings pond, and the regulating storage capacity. The determined normal production water level cannot be lower than the clarified water level. The determined normal production water level should also meet the requirement that the extreme value of the flood water level after flood routing calculation is not higher than the designed maximum flood water level.

[0077] From Figure 1 As can be seen from the method shown, the water volume management method for non-coal mine tailings ponds provided by this application determines the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the incoming tailings indicators; determines the water loss according to the water volume intercepted by the deposited tailings, the evaporation of the water surface in the reservoir area, the seepage of the reservoir area, and the seepage of the dam body; determines the water volume balance value according to the water volume brought in by the tailings slurry, the water loss, and the water return requirement; and determines the normal production water level according to the water volume balance value, the three-dimensional data of the tailings pond, the designed maximum flood water level, the flood regulation storage capacity, and the clarification distance. The water volume management method for non-coal mine tailings ponds provided by this application can accurately calculate the water volume balance value based on the real-time detection results during the operation of the tailings pond, and then determine the normal production water level based on the water volume balance value, thereby improving the accuracy of the water volume management of non-coal mine tailings ponds and enhancing the safety of non-coal mine tailings ponds.

[0078] In some embodiments of this application, in the above method, step S110, determining the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the incoming tailings indicators includes: during the process of discharging tailings into the tailings pond, detecting the tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and the dry bulk density of the deposited tailings; determining the water volume brought in by the tailings slurry and the discharged tailings volume according to the detection results of the tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and a specific time period; and determining the water volume intercepted by the deposited tailings according to the detection results of the tailings specific gravity, the dry bulk density of the deposited tailings, and the discharged tailings volume.

[0079] In this embodiment, the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings are calculated through the detected tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and the dry bulk density of the deposited tailings.

[0080] The following details the above calculation process in combination with specific formulas.

[0081] According to the tailings slurry flow rate Q k 、the tailings slurry concentration P, and the tailings specific gravity γ gand a specific duration t, determine the water inflow W1 of the tailings slurry and the discharged tailings volume Q. The flow rate of the tailings slurry can be directly detected using an on-line monitoring flowmeter installed on the tailings transportation pipeline. In the International System of Units, the standard unit of the tailings slurry flow rate is m 3 / s; the concentration of the tailings slurry can be directly detected using an on-line monitoring densitometer installed on the tailings transportation pipeline; the specific gravity of the tailings can be directly detected using an X-ray tube installed on the tailings transportation pipeline. The specific duration can be one day, one week, etc.

[0082] Determine the conversion coefficient γ according to formula (1) k :

[0083]

[0084] Determine the water inflow W1 of the tailings slurry according to formula (2):

[0085] W1 = Q k γ k (1 - P)t, formula (2).

[0086] Determine the discharged tailings volume Q according to formula (3):

[0087] Q = Q k γ k Pt, formula (3).

[0088] According to the specific gravity of the tailings γ g 、the dry bulk density of the tailings deposit γ d and the discharged tailings volume Q, determine the water intercepted by the deposited tailings W k . The dry bulk density of the tailings deposit can be directly detected after the deposited tailings reach a certain quantity, or can be estimated by the particle size of the tailings when the deposited tailings do not reach a certain quantity. The particle size of the tailings can be directly detected using an on-line particle size analyzer installed on the tailings transportation pipeline.

[0089] Determine the water intercepted by the deposited tailings W according to formula (4) k :

[0090]

[0091] In some embodiments of the present application, in the above method, in step S120, to determine the water loss amount based on the water intercepted by the deposited tailings, the evaporation amount of the reservoir area water surface, the seepage amount of the reservoir area, and the seepage amount of the dam body, it includes: determining the evaporation amount of the reservoir area water surface according to the evaporation depth observed by the evaporation pan in the area near the tailings reservoir and the empirical conversion coefficient; determining the seepage amount of the reservoir area according to the geological data; determining the seepage amount of the dam body based on the detection result of the seepage water intercepted by the cut-off dam by the seepage flowmeter; and determining the water loss amount according to the sum of the water intercepted by the deposited tailings, the evaporation amount of the reservoir area water surface, the seepage amount of the reservoir area, and the seepage amount of the dam body.

[0092] According to the water intercepted by the deposited tailings W k , the evaporation amount of the reservoir area water surface W z , the seepage amount of the reservoir area W s and the seepage amount of the dam body W B , determine the water loss amount W2. The evaporation amount of the reservoir area water surface within a specific time period can be determined according to the evaporation depth observed by the evaporation pan in the area near the tailings reservoir and the empirical conversion coefficient. The seepage amount of the reservoir area within a specific time period can be determined according to the geological data by using seepage simulation software to determine the seepage path and the seepage discharge per unit width of the groundwater at each section of the non-coal tailings reservoir, so as to further determine the seepage amount of the reservoir area. The seepage water of the dam body can be intercepted by setting a cut-off dam at the place where the flowing water can be collected downstream of the tailings dam, and the seepage water volume of the dam body can be detected by the seepage flowmeter.

[0093] Determine the water loss amount W2 according to formula (5):

[0094] W2 = W k + W z + W s + W B , formula (5).

[0095] In some embodiments of the present application, in the above method, in step S130, to determine the water balance value according to the water volume brought in by the tailings slurry, the water loss amount, and the water return requirement, it includes: determining the water return requirement according to the ore dressing production plan; and determining the water balance value according to the difference between the sum of the water loss amount and the water return requirement and the water volume brought in by the tailings slurry.

[0096] The water surface area inside the tailings pond is large and the condition for clarifying the return water is good, but the operation cost of transporting the return water back and forth is relatively high. Therefore, according to the ore dressing production plan of the mine, it is possible to determine that part of the water used is recycled using the return water, while the other part of the water used is supplemented with fresh water from other sources. The planned return water volume demand determined based on the ore dressing production plan may be the daily return water volume demand, the monthly return water volume demand, the annual return water volume demand, etc. That is to say, the time corresponding to the planned return water volume demand may not be consistent with the specific duration of the detection index. Therefore, the planned return water volume demand can be converted into the return water volume demand for a specific duration that is the same as the water volume brought in by the tailings slurry and the loss water volume; or, at the same time, the water volume brought in by the tailings slurry, the loss water volume, and the planned return water volume are converted into values for a unified period of time.

[0097] Based on the water volume W1 brought in by the tailings slurry, the loss water volume W2, and the return water volume demand W3 for a unified duration, determine the water balance value.

[0098] Determine the water balance value according to formula (6):

[0099] V = W2 + W3 - W1, formula (6).

[0100] In some embodiments of the present application, in the above method, in step S140, according to the water balance value, the three-dimensional data of the tailings pond, the designed highest flood level, the flood regulation storage capacity, and the clarification distance, determine the normal production water level, including: according to the three-dimensional data, the designed highest flood level, and the flood regulation storage capacity, determine the control water level; according to the three-dimensional data and the clarification distance, determine the clarified water level; according to the water balance value, determine the regulation storage capacity; according to the three-dimensional data, the regulation storage capacity, the control water level, and the clarified water level, determine the normal production water level.

[0101] There are many constraints related to water control in the tailings pond. For example, the difference between the water level of the tailings pond and the elevation of the beach top should meet the requirements of safety freeboard, flood regulation height, and return water storage height; for example, the deposition beach length corresponding to the safety freeboard should meet the requirements of the minimum deposition beach length, etc. In this embodiment, establish constraints at least through the water balance value, the clarification distance, the designed highest flood level, the flood regulation storage capacity, and the three-dimensional data of the tailings pond to calculate the appropriate normal production water level.

[0102] First, according to the three-dimensional data, the designed highest flood level, and the flood regulation storage capacity, determine the control water level. Based on the three-dimensional data of the tailings pond, it is possible to determine values such as the area corresponding to the designed highest flood level and the outer slope gradient of the tailings dam. According to the area corresponding to the designed highest flood level and the outer slope gradient of the tailings dam, the flood regulation height that meets the flood regulation storage capacity can be calculated. Furthermore, determine the control water level according to the flood regulation height and the designed highest flood level.

[0103] Secondly, based on the three-dimensional data and the clarification distance, the clarified water level is determined. Based on the clarification distance and the outer slope gradient of the tailings dam, the clarification height corresponding to the clarification distance can be calculated.

[0104] Next, according to the water balance value, the regulating storage capacity is determined. When the water balance value is greater than 0 and does not exceed the preset threshold, it indicates that the water volume is in a basically balanced state, and the regulating storage capacity can be relatively small. For example, the preset threshold can be used as the regulating storage capacity. When the water balance value exceeds the preset threshold, it indicates that the water volume is in a very unbalanced state, and the product of the water balance value and the dry season duration can be used as the regulating storage capacity. Here, the water balance value can represent a specific duration, and the dry season duration should be converted based on the specific duration. For example, if the specific duration is one day, the dry season duration is in days; or if the specific duration is one week, the dry season duration is in weeks.

[0105] Determine the regulating storage capacity V according to formula (7) J :

[0106] V J = VT, formula (7).

[0107] Finally, based on the three-dimensional data, the regulating storage capacity, the control water level, and the clarified water level, the normal production water level is determined. The constraint conditions for the normal production water level determined by the three-dimensional data, the regulating storage capacity, the control water level, and the clarified water level at least include: the normal production water level is higher than the clarified water level; the volume between the control water level and the normal production water level is equal to the regulating storage capacity; the extreme value of the flood water level determined by the flood routing calculation based on the normal production water level and the design flood standard is not higher than the design maximum flood water level.

[0108] The normal production water level is higher than the clarified water level to meet the requirements for the clarification of tailings water. In some actual situations, if the clarification distance is not converted into the clarified water level, this constraint condition can also be that the length corresponding to the normal production water level is greater than the clarification distance.

[0109] The volume between the control water level and the normal production water level is not less than the regulating storage capacity to ensure that precipitation can be stored in the tailings reservoir during the wet season to make up for the shortage of the return water volume during the dry season.

[0110] The extreme value of the flood water level determined by the flood routing calculation based on the normal production water level and the design flood standard is not higher than the design maximum flood water level to ensure that the flood regulation capacity of the tailings reservoir meets the safety requirements. Currently, the flood routing calculation mostly uses the water balance method, or sets the water level of a unit step length for iterative calculation in a loop, or other methods, etc. If the extreme value of the flood water level after the flood routing calculation is higher than the design maximum flood water level, it indicates that the normal production water level does not meet this constraint condition, and the normal production water level is unreasonable. It is necessary to re-determine the normal production water level in combination with other constraint conditions until the normal production water level meets the flood regulation constraint conditions.

[0111] In some embodiments of the present application, the above method further includes: predicting precipitation runoff according to meteorological information; determining the water return volume according to the precipitation runoff and the designed highest flood level; and adjusting the planned water consumption according to the water return volume.

[0112] When the water balance value is determined based on the detection result, the precipitation runoff for a certain future time can be determined according to the prediction of the weather forecast. When the precipitation runoff is large, on the premise of meeting the requirements of flood regulation safety, an appropriate amount of the precipitation runoff stored in the reservoir can be used for water return. That is to say, on the premise of meeting the requirements of flood regulation, the water return volume can be determined; during precipitation, by adjusting the sealing height of the cover plate of the drainage well (chute), the scheduling height of the tailings pond water return is increased, so that an appropriate amount of the precipitation runoff stored in the reservoir is used for water return.

[0113] Since the water return volume increases, the demand for fresh water that needs to be obtained from other sources is reduced. Therefore, after determining the water return volume, it is necessary to adjust the planned water consumption according to the water return volume.

[0114] In some embodiments of the present application, the above method further includes: monitoring the real-time precipitation, and determining the inflow runoff according to the monitoring result; and determining the profit and loss water volume according to the inflow runoff, the water volume brought in by the tailings slurry, the loss water volume, and the water return volume demand.

[0115] Monitor the real-time precipitation, and accumulate the monitoring result to determine the inflow runoff W4. The accumulation duration is kept unified with the duration for calculating the water volume brought in by the tailings slurry, the loss water volume, and the water return volume demand. For example, the profit and loss water volume for one day, one week, one month, etc. can be calculated and determined.

[0116] Determine the profit and loss water volume H according to formula (8):

[0117] H = W1 + W4 - W2 - W3, formula (8).

[0118] Based on the method of the above embodiments, the present application can, in combination with the actual situation, realize the water volume management of non-coal mine tailings ponds, making the water volume management of non-coal mine tailings ponds more reasonable and accurate.

[0119] Figure 2 Show a schematic flow chart of the water volume management method for a non-coal mine tailings pond proposed in another embodiment of the present application. According to Figure 2 As shown, the method of this embodiment includes steps S201 to S212:

[0120] Step S201, during the process of discharging tailings into the tailings pond, detect the tailings slurry flow rate, tailings slurry concentration, tailings specific gravity, and dry bulk density of tailings accumulation within a specific duration; go to step S202.

[0121] Step S202: Determine the water volume brought in by the tailings slurry and the tailings discharged according to the tailings slurry flow rate, tailings slurry concentration, and tailings specific gravity; then go to step S203.

[0122] Step S203: Determine the water volume intercepted by the deposited tailings according to the tailings specific gravity, dry bulk density of the deposited tailings, and the amount of tailings discharged; then go to step S204.

[0123] Step S204: Determine the water loss according to the water volume intercepted by the deposited tailings, the evaporation volume of the reservoir area water surface, the seepage volume of the reservoir area, and the seepage volume of the dam body; then go to step S206.

[0124] Step S205: Determine the water return requirement within a specific time period according to the ore dressing production plan; then go to step S206.

[0125] Step S206: Determine the water balance value according to the water volume brought in by the tailings slurry, the water loss, and the water return requirement. Then go to step S207.

[0126] Step S207: Determine the regulating storage capacity according to the water balance value; then go to step S210.

[0127] Step S208: Determine the control water level according to the three-dimensional data of the tailings reservoir, the designed highest flood level, and the flood regulation storage capacity; then go to step S210.

[0128] Step S209: Determine the clarified water level according to the three-dimensional data of the tailings reservoir and the clarification distance; then go to step S210.

[0129] Step S210: Establish constraint conditions at least with the normal production water level higher than the clarified water level, the volume between the control water level and the normal production water level not less than the regulating storage capacity, and the extreme flood level determined by the flood regulation calculation according to the normal production water level and the design flood standard not higher than the designed highest flood level, and determine the normal production water level; then go to step S211 and / or S212.

[0130] Step S211: Predict the precipitation runoff according to the meteorological information, determine the water return according to the precipitation runoff and the designed highest flood level, and adjust the planned water consumption according to the water return.

[0131] Step S212: Monitor the real-time precipitation, determine the inflow runoff according to the monitoring results, and determine the surplus or deficit water volume according to the inflow runoff, the water volume brought in by the tailings slurry, the water loss, and the water return requirement.

[0132] Figure 3 The structural schematic diagram of the water volume management system of the non-coal mine tailings reservoir proposed in an embodiment of the present application is shown. According to Figure 3 As shown, the system 300 includes:

[0133] A detection result calculation unit 310, configured to determine the water inflow brought in by the tailings slurry and the water intercepted by the deposited tailings according to the detection results of the indexes of the incoming tailings;

[0134] A water loss calculation unit 320, configured to determine the water loss according to the water intercepted by the deposited tailings, the evaporation amount of the water surface in the reservoir area, the seepage amount of the reservoir area, and the seepage amount of the dam body;

[0135] A water balance calculation unit 330, configured to determine the water balance value according to the water inflow brought in by the tailings slurry, the water loss, and the water return requirement;

[0136] A normal production water level determination unit 340, configured to determine the normal production water level according to the water balance value, the three-dimensional data of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity, and the clarification distance.

[0137] In some embodiments of the present application, in the above system 300, the detection result calculation unit 310 is specifically configured to: during the process of discharging tailings into the tailings reservoir, detect the tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and the dry bulk density of the tailings accumulation; determine the water inflow brought in by the tailings slurry and the discharged tailings amount according to the detection results of the tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and a specific time period; determine the water intercepted by the deposited tailings according to the detection results of the tailings specific gravity, the dry bulk density of the tailings accumulation, and the discharged tailings amount.

[0138] In some embodiments of the present application, in the above system 300, the water loss calculation unit 320 is specifically configured to: determine the evaporation amount of the water surface in the reservoir area according to the evaporation depth observed by an evaporation pan in the area near the tailings reservoir and an empirical conversion coefficient; determine the seepage amount of the reservoir area according to geological data; determine the seepage amount of the dam body based on the detection result of the seepage water intercepted by the cut-off dam by a seepage flowmeter; determine the water loss according to the sum of the water intercepted by the deposited tailings, the evaporation amount of the water surface in the reservoir area, the seepage amount of the reservoir area, and the seepage amount of the dam body.

[0139] In some embodiments of the present application, in the above system 300, the water balance calculation unit 330 is specifically configured to: determine the water return requirement according to the ore dressing production plan; determine the water balance value according to the difference between the sum of the water loss and the water return requirement and the water inflow brought in by the tailings slurry.

[0140] In some embodiments of the present application, in the above system 300, the normal production water level determination unit 340 is specifically configured to: determine the control water level according to the three-dimensional data, the designed highest flood level, and the flood regulation storage capacity; determine the clarified water level according to the three-dimensional data and the clarification distance; determine the normal production water level according to the water balance value, the three-dimensional data, the control water level, and the clarified water level.

[0141] In some embodiments of the present application, the above-mentioned system 300 further includes: an adjustment unit, configured to predict precipitation runoff according to meteorological information; determine the water return volume according to the precipitation runoff and the designed highest flood level; and adjust the planned water consumption according to the water return volume.

[0142] In some embodiments of the present application, the above-mentioned system 300 further includes: a profit and loss water volume calculation unit, configured to monitor the real-time precipitation, and determine the reservoir inflow according to the monitoring results; determine the profit and loss water volume according to the reservoir inflow, the water volume brought in by the tailings slurry, the water loss, and the water return volume requirement.

[0143] It should be noted that the above-mentioned water volume management system 300 for non-coal mine tailing ponds can implement the foregoing water volume management methods for non-coal mine tailing ponds one by one, which will not be elaborated herein.

[0144] Figure 4 The structural schematic diagram of a computer device according to an embodiment of the present application is shown. According to Figure 4 As shown, the internal structure of the computer device may include a processor, a memory, a network interface, and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external client through a network connection. When the computer program is executed by the processor, it realizes the functions or steps of the water volume management method for non-coal mine tailing ponds.

[0145] In one embodiment, the computer device provided by the present application includes a memory and a processor. The memory stores a database and a computer program that can run on the processor. When the processor executes the computer program, the following steps are realized:

[0146] Determine the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the incoming tailings indexes;

[0147] Determine the water loss according to the water volume intercepted by the deposited tailings, the evaporation amount of the water surface in the reservoir area, the seepage amount of the reservoir area, and the seepage water amount of the dam body;

[0148] Determine the water balance value according to the water volume brought in by the tailings slurry, the water loss, and the water return volume requirement;

[0149] Determine the normal production water level according to the water balance value, the three-dimensional data of the tailing pond, the designed highest flood level, the flood regulation storage capacity, and the clarification distance.

[0150] In one embodiment, a computer-readable storage medium is further provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0151] Determine the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the incoming tailings indexes;

[0152] Determine the water loss according to the water volume intercepted by the deposited tailings, the evaporation volume of the reservoir area water surface, the seepage water volume of the reservoir area, and the seepage water volume of the dam body;

[0153] Determine the water balance value according to the water volume brought in by the tailings slurry, the water loss, and the water return requirement;

[0154] Determine the normal production water level according to the water balance value, the three-dimensional data of the tailings pond, the designed highest flood level, the flood regulation storage capacity, and the clarification distance.

[0155] It should be noted that for the functions or steps that the above computer device or computer-readable storage medium can achieve, reference can be made to the relevant descriptions in the foregoing method embodiments. To avoid repetition, they will not be described in detail here.

[0156] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the various embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0157] Those skilled in the art can clearly understand that, for the convenience and conciseness of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0158] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A water volume management method for a non-coal mine tailings pond, characterized in that, The method includes: Determining the water return requirement according to the ore dressing production schedule; Determining the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the indexes of the incoming tailings; Determining the water loss according to the water volume intercepted by the deposited tailings, the water surface evaporation volume of the reservoir area, the water leakage volume of the reservoir area and the water leakage volume of the dam body; Determining the water balance value according to the water volume brought in by the tailings slurry, the water loss and the water return requirement; Determining the normal production water level according to the water balance value, the three-dimensional data of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity and the clarification distance; The determining the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the indexes of the incoming tailings includes: During the process of discharging the tailings into the tailings reservoir, detecting the flow rate of the tailings slurry, the concentration of the tailings slurry, the specific gravity of the tailings and the dry bulk density of the tailings accumulation; Determining the water volume brought in by the tailings slurry and the discharged tailings volume according to the detection results of the flow rate of the tailings slurry, the concentration of the tailings slurry, the specific gravity of the tailings and a specific time period; Determining the water volume intercepted by the deposited tailings according to the detection results of the specific gravity of the tailings, the dry bulk density of the tailings accumulation and the discharged tailings volume; The determining the normal production water level according to the water balance value, the three-dimensional data of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity and the clarification distance includes: Determining the control water level according to the three-dimensional data, the designed highest flood level and the flood regulation storage capacity; Determining the clarified water level according to the three-dimensional data and the clarification distance; Determining the regulation storage capacity according to the water balance value; Determining the normal production water level according to the three-dimensional data, the regulation storage capacity, the control water level and the clarified water level; The method further includes: Predicting the precipitation runoff according to the meteorological information; Determining the water return according to the precipitation runoff and the designed highest flood level; Adjusting the planned water consumption according to the water return; Monitoring the real-time precipitation and determining the incoming runoff according to the monitoring results; Determining the profit and loss water volume according to the incoming runoff, the water volume brought in by the tailings slurry, the water loss and the water return requirement.

2. The water volume management method for non-coal mine tailing ponds according to claim 1, characterized in that The determining the water loss according to the water volume intercepted by the deposited tailings, the water surface evaporation volume of the reservoir area, the water leakage volume of the reservoir area and the water leakage volume of the dam body includes: Determining the water surface evaporation volume of the reservoir area according to the evaporation depth observed by the evaporation pan in the area near the tailings reservoir and the empirical conversion coefficient; Determining the water leakage volume of the reservoir area according to the geological data; Determining the water leakage volume of the dam body based on the detection results of the seepage water intercepted by the cut-off dam by the seepage flowmeter; Determining the water loss according to the sum of the water volume intercepted by the deposited tailings, the water surface evaporation volume of the reservoir area, the water leakage volume of the reservoir area and the water leakage volume of the dam body.

3. The water volume management method for non-coal mine tailing ponds according to claim 1, characterized in that The determining the water balance value according to the water volume brought in by the tailings slurry, the water loss and the water return requirement includes: Determining the water balance value according to the difference between the sum of the water loss and the water return requirement and the water volume brought in by the tailings slurry.

4. A water volume management system for a non-coal mine tailings pond, characterized in that, The system includes: A detection result calculation unit, configured to determine the water volume brought in by the tailings slurry and the water volume intercepted by the deposited tailings according to the detection results of the indexes of the incoming tailings; A water loss calculation unit, configured to determine the water loss according to the water volume intercepted by the deposited tailings, the evaporation volume of the reservoir area water surface, the seepage water volume of the reservoir area, and the seepage water volume of the dam body; A water balance calculation unit, configured to determine the water return requirement according to the ore dressing production plan; determine the water balance value according to the water volume brought in by the tailings slurry, the water loss, and the water return requirement; A production water level determination unit, configured to determine the normal production water level according to the water balance value, the three-dimensional data of the tailings reservoir, the designed highest flood level, the flood regulation storage capacity, and the clarification distance; The detection result calculation unit is specifically configured to detect the tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and the dry bulk density of the tailings accumulation during the process of discharging the tailings into the tailings reservoir; determine the water volume brought in by the tailings slurry and the discharged tailings volume according to the detection results of the tailings slurry flow rate, the tailings slurry concentration, the tailings specific gravity, and a specific time period; determine the water volume intercepted by the deposited tailings according to the detection results of the tailings specific gravity, the dry bulk density of the tailings accumulation, and the discharged tailings volume; The production water level determination unit is specifically configured to determine the control water level according to the three-dimensional data, the designed highest flood level, and the flood regulation storage capacity; determine the clarified water level according to the three-dimensional data and the clarification distance; determine the regulation storage capacity according to the water balance value; determine the normal production water level according to the three-dimensional data, the regulation storage capacity, the control water level, and the clarified water level; An adjustment unit, configured to predict the precipitation runoff according to the meteorological information; Determine the water return volume according to the precipitation runoff and the designed highest flood level; Adjust the planned water consumption according to the water return volume; A profit and loss water volume calculation unit, configured to monitor the real-time precipitation, and determine the incoming runoff according to the monitoring results; Determine the profit and loss water volume according to the incoming runoff, the water volume brought in by the tailings slurry, the water loss, and the water return requirement.

5. A computer 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, the steps of the water volume management method for a non-coal mine tailings reservoir according to any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is instructed by the processor, the steps of the water volume management method for a non-coal mine tailings reservoir according to any one of claims 1 to 3 are implemented.

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