Mining filling slurry conveying control method and system

Abstract

The invention relates to the technical field of slurry conveying control, in particular to a mining filling slurry conveying control method and system, and the method comprises the following steps: calculating the on-way resistance in the slurry conveying process based on the rheological parameters of mining filling slurry in combination with the smoothness and length of a conveying pipeline, and obtaining the on-way resistance calculation result. According to the method, the on-way resistance is calculated by analyzing the rheological parameters and combining the smoothness and the length of the conveying pipeline, the required conveying pressure can be evaluated according to the deviation between the actually measured resistance and the standard resistance, the stability of the slurry in the conveying process is ensured, and the filling time of a target mining area is considered for adjusting the pumping flow of the slurry. The flow control is more in line with the actual demand, the filling efficiency is improved, the pumping flow is compensated and adjusted by recording the duration of the unexpected situation, the reliability of slurry conveying is improved, and the engineering construction delay caused by unexpected shutdown is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of slurry conveying control, and in particular to a method and system for controlling the conveying of filling slurry for mining. Background Art

[0002] The field of slurry conveying control technology is mainly used in the mining, construction and chemical industries for efficient and safe conveying of fluid mixtures. Fluid mixtures usually include water and other solid particles such as minerals, cement or chemical raw materials. Slurry conveying technology needs to ensure the continuous flow and stable delivery of slurry, prevent pipeline blockage and excessive wear, and optimize energy consumption and maintenance requirements. The field of slurry conveying technology involves a variety of control strategies, including flow control, pressure management, and real-time adjustment of conveying paths and speeds. Through sensors and control algorithms, the density, viscosity and flow rate of the slurry can be monitored in real time to adjust the pumping parameters to ensure the efficiency and reliability of the conveying process.

[0003] Among them, the mining filling slurry conveying control method involves the control method of using slurry conveying technology to perform filling operations in the mining industry. The method is mainly used in underground mining operations, and aims to support the mine structure and achieve ground stability by conveying slurry to the open area of ​​the mine. The core of the subject is to be able to accurately control the slurry flow, ensure filling efficiency and safety, and achieve the effect of stable conveying of filling slurry by controlling the flow rate and pressure during the slurry conveying process.

[0004] Traditional control methods are deficient in the calculation and real-time adjustment of resistance. In the face of complex mining environments, traditional methods cannot accurately adjust the conveying parameters in real time, resulting in unstable slurry flow and easy pipeline blockage or excessive wear. This affects the slurry conveying efficiency, increases maintenance costs and safety hazards. The response to emergency situations is not timely enough, and there is a lack of effective compensation mechanisms. Once a failure occurs, it is difficult to quickly resume normal operations, which has a negative impact on overall production efficiency and cost control. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a method and system for controlling the conveying of filling slurry for mining.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a method for controlling the conveying of filling slurry for mining, comprising the following steps:

[0007] S1: Based on the rheological parameters of the mining filling slurry, combined with the smoothness and length of the conveying pipeline, the resistance along the slurry during transportation is calculated to obtain the calculation result of the resistance along the slurry;

[0008] S2: Based on the calculation result of the along-the-way resistance, the along-the-way resistance is compared with the standard resistance, the resistance deviation is calculated, and the delivery pressure of the delivery pump is adjusted according to the standard delivery pressure and the height difference between the delivery station and the discharge port to obtain a delivery pressure adjustment result;

[0009] S3: Based on the pressure adjustment result, according to the target delivery volume of the slurry and the target mining area filling time, the pumping flow rate of the slurry is adjusted to obtain a pumping flow rate adjustment result;

[0010] S4: Based on the pumping flow adjustment result, record the emergency shutdown and slow conveying conditions during the slurry conveying process, calculate the slurry conveying delay according to the duration of the emergency shutdown and slow conveying, and compensate and adjust the pumping flow according to the slurry conveying delay and the remaining conveying time to obtain the compensated slurry conveying control information.

[0011] The present invention is improved in that the step of obtaining the calculation result of the resistance along the way is:

[0012] S111: Based on the mining filling slurry, rheological parameters of the filling slurry are collected, and the rheological parameters include viscosity, yield stress and diffusivity of the slurry;

[0013] S112: Based on the rheological parameters of the filling slurry, smoothness and length data of the integrated conveying pipeline are collected to obtain conveying resistance correlation data;

[0014] S113: Based on the transport resistance associated data, the formula:

[0015]

[0016] Calculate the resistance R along the slurry transportation process and obtain the calculation result of the resistance along the slurry, where R represents the resistance along the slurry transportation process, α R is the adjustment coefficient, ω R and φ R is the weighting coefficient, η R Represents the viscosity of the slurry, τ R Represents the yield stress of the slurry, S R Represents the smoothness of the pipeline, D R Represents the diffusion degree of the slurry, L R Represents the length of the pipe.

[0017] The present invention is improved in that the method for calculating the resistance deviation is:

[0018] S211: based on the calculation result of the along-the-way resistance, extracting the along-the-way resistance in the slurry transportation process, and obtaining the preset standard resistance, and obtaining the deviation correlation data;

[0019] S212: Based on the deviation correlation data, by formula:

[0020]

[0021] Calculate the resistance deviation ratio I and obtain the resistance deviation information, where I represents the resistance deviation ratio, R is the resistance along the route, and R std is the preset standard resistance.

[0022] The present invention is improved in that the steps of obtaining the delivery pressure adjustment result are:

[0023] S221: Collecting altitude information of the conveying station and the discharge port, obtaining the height difference between the conveying station and the discharge port, and obtaining height difference information;

[0024] S222: Based on the resistance deviation information and the height difference information, combined with the standard delivery pressure, the formula:

[0025]

[0026] Calculate the adjusted delivery pump pressure P adj , where P adj Indicates the adjusted delivery pump pressure, β P is the nonlinear adjustment coefficient, ρ P is the density of the slurry, g is the acceleration due to gravity, P std is the standard delivery pressure, I is the resistance deviation ratio, h P It is the height difference between the conveying station and the discharge port;

[0027] S223: Based on the adjusted delivery pump pressure P adj , adjust the delivery pressure of the delivery pump to obtain the delivery pressure adjustment result.

[0028] The present invention is improved in that the steps of obtaining the pumping flow rate adjustment result are:

[0029] S311: Based on the pressure adjustment result, collecting the target delivery volume and target delivery time of the slurry to obtain slurry delivery related data;

[0030] S312: Based on the slurry transport related data, the formula:

[0031]

[0032] Calculate the adjusted pumping flow Q, where Q represents the adjusted pumping flow, V target is the target delivery rate of slurry, T target is the target delivery time, k Q is the flow adjustment coefficient, ∈ Q is a dynamic factor;

[0033] S313: Based on the adjusted pumping flow rate Q, the delivery flow rate of the delivery pump is adjusted to obtain a pumping flow rate adjustment result.

[0034] The present invention is improved in that the method for calculating the delay amount of slurry delivery is:

[0035] S411: Based on the pumping flow rate adjustment result, monitor and record the duration of each slow delivery and emergency stop and the corresponding pumping flow rate to obtain delay-related data;

[0036] S412: Based on the delay-related data, by formula:

[0037]

[0038] Calculate the slurry delivery delay V delayed , to obtain the slurry delivery delay information, where n is the total number of emergency shutdown and slow delivery events, t i is the duration of the ith event, Q actual,i is the actual pumping flow recorded in the i-th event, Q is the adjusted pumping flow, V delayed The delay in slurry delivery is .

[0039] The present invention is improved in that the steps of obtaining the compensated slurry delivery control information are:

[0040] S421: Based on the slurry delivery delay information, integrating the remaining delivery time, and obtaining flow compensation related data;

[0041] S422: Based on the flow compensation associated data, by formula:

[0042]

[0043] Calculate the compensated pumping flow Q adjusted , where Q is the adjusted pumping flow, V delayed is the slurry delivery delay, T remaining is the remaining delivery time, γ is the adjustment factor;

[0044] S423: Based on the compensated pumping flow Q adjusted , implement slurry transportation and obtain compensated slurry transportation control information.

[0045] A mining filling slurry conveying control system, the mining filling slurry conveying control system is used to execute the mining filling slurry conveying control method, the system comprises:

[0046] The along-the-line resistance analysis module calculates the along-the-line resistance during slurry transportation based on the rheological parameters of the mining filling slurry and the smoothness and length of the transportation pipeline to obtain the along-the-line resistance calculation results;

[0047] The conveying pressure adjustment module compares the along-the-way resistance with the standard resistance based on the calculation result of the along-the-way resistance, calculates the resistance deviation, and adjusts the conveying pressure of the conveying pump according to the standard conveying pressure and the height difference between the conveying station and the discharge port to obtain the conveying pressure adjustment result;

[0048] The delivery flow rate adjustment module adjusts the pumping flow rate of the slurry based on the pressure adjustment result, according to the target delivery volume of the slurry and the target mining area filling time, to obtain a pumping flow rate adjustment result;

[0049] The delivery delay assessment module records the emergency stop and slow delivery during the slurry delivery process based on the pumping flow adjustment result, calculates the slurry delivery delay amount according to the duration of the emergency stop and slow delivery, and obtains the slurry delivery delay information;

[0050] The delivery compensation adjustment module performs compensation adjustment on the pumping flow rate based on the slurry delivery delay information and the remaining delivery time to obtain compensated slurry delivery control information.

[0051] Compared with the prior art, the advantages and positive effects of the present invention are:

[0052] In the present invention, by analyzing the rheological parameters and combining the smoothness and length of the conveying pipeline, the resistance along the way is calculated, so that the resistance evaluation is more accurate, and then the engineer is assisted to adjust the concentration of the slurry according to the size of the resistance, and the engineer is allowed to evaluate the required conveying pressure based on the deviation between the actual measured resistance and the standard resistance, adjust the pressure of the conveying pump, or reselect suitable conveying equipment to ensure the stability of the slurry during the conveying process. For the adjustment of the slurry pumping flow rate, the filling time of the target mining area is taken into consideration to make the flow control more in line with actual needs and improve the filling efficiency. For the monitoring of emergency shutdown and slow conveying, the pumping flow rate is compensated and adjusted by recording the duration of the unexpected situation, thereby improving the reliability of slurry transportation, reducing construction delays caused by unexpected shutdowns, improving transportation efficiency and safety, and ensuring the normal progress of the mining filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a flow chart of the method of the present invention;

[0054] Figure 2 A flow chart for obtaining the calculation results of the resistance along the route according to the present invention;

[0055] Figure 3A flow chart for calculating the resistance deviation size of the present invention;

[0056] Figure 4 A flow chart for obtaining a delivery pressure adjustment result of the present invention;

[0057] Figure 5 A flow chart for obtaining a pumping flow adjustment result according to the present invention;

[0058] Figure 6 A flow chart for calculating the slurry delivery delay amount of the present invention;

[0059] Figure 7 The present invention is a flow chart for obtaining compensated slurry delivery control information. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0061] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0062] See also Figure 1 The present invention provides a technical solution: a method for controlling the conveying of a filling slurry for mining, comprising the following steps:

[0063] S1: Based on the rheological parameters of the mining filling slurry, which include the viscosity, yield stress and diffusivity of the slurry, combined with the smoothness and length of the conveying pipeline, the resistance along the slurry during transportation is calculated to obtain the calculation result of the resistance along the slurry;

[0064] S2: Based on the calculation result of the resistance along the way, the resistance along the way is compared with the standard resistance, the resistance deviation is calculated, and the delivery pressure of the delivery pump is adjusted according to the standard delivery pressure and the height difference between the delivery station and the discharge port to obtain the delivery pressure adjustment result;

[0065] S3: Based on the pressure adjustment result, according to the target delivery volume of the slurry and the target mine filling time, the pumping flow rate of the slurry is adjusted to obtain the pumping flow rate adjustment result;

[0066] S4: Based on the pumping flow adjustment result, monitor the slurry delivery process, record the emergency shutdown and slow delivery during the slurry delivery process, calculate the slurry delivery delay according to the duration of the emergency shutdown and slow delivery, and compensate and adjust the pumping flow according to the slurry delivery delay and the remaining delivery time to obtain the compensated slurry delivery control information.

[0067] The results of the along-the-line resistance calculation include the resistance value and key resistance points of the slurry in the pipe section; the delivery pressure adjustment results include the adjusted delivery pump pressure parameters, expected pressure achievement rate and pressure adjustment range; the pumping flow adjustment results include the adjusted flow parameters, flow adjustment ratio and expected filling efficiency; the compensated slurry delivery control information includes the compensated pumping flow and real-time delivery efficiency.

[0068] See also Figure 2 , the steps to obtain the calculation results of the resistance along the way are:

[0069] S111: Based on the mining filling slurry, rheological parameters of the filling slurry are collected, and the rheological parameters include viscosity, yield stress and diffusivity of the slurry;

[0070] S112: Based on the rheological parameters of the filling slurry, the smoothness and length data of the integrated conveying pipeline are collected to obtain conveying resistance correlation data;

[0071] S113: Based on the transport resistance correlation data, the formula:

[0072]

[0073] Calculate the resistance R along the slurry transportation process and obtain the calculation result of the resistance along the slurry, where R represents the resistance along the slurry transportation process, α R is the adjustment coefficient, ω R and φ R is the weighting coefficient, η R Represents the viscosity of the slurry, τ R Represents the yield stress of the slurry, S R Represents the smoothness of the pipeline, D R Represents the diffusion degree of the slurry, L R Represents the length of the pipe.

[0074] formula:

[0075]

[0076] Parameter details and how to obtain them:

[0077] Viscosity η R: Viscosity is a measure of the internal friction of a slurry as it flows. It can be measured using a rotational viscometer, which measures the liquid's resistance to rotation to determine viscosity.

[0078] Yield stress τ R Yield stress is the internal stress that needs to be overcome before the slurry starts to flow. It is usually measured by a rheometer, which can apply different shear forces to determine the rheological properties of the material.

[0079] Diffusion D R : Diffusivity refers to the diffusion characteristics between solid particles and the liquid matrix in the slurry. It can be measured by a particle analyzer, which evaluates the particle size and distribution to estimate the diffusivity.

[0080] Pipe smoothness S R :The smoothness of the pipeline affects the frictional resistance of the slurry flow and is usually measured through technical data provided by the pipeline manufacturer or using a roughness tester.

[0081] Pipe length L R :The pipeline length is obtained directly from the engineering design drawings or on-site measurements and is the total length of the pipeline during the slurry transportation process.

[0082] Weighting coefficient ω R and φ R : Controls the viscosity and yield stress of the slurry, preset by experts.

[0083] Calculation example:

[0084] Set the following parameters:

[0085] Viscosity η R =0.1Pa·s, yield stress τ R =50Pa, diffusion degree D R =0.005m 2 / s, pipe smoothness S R =0.85, pipeline length L R =500m, adjustment factor α R =1.2, weighting coefficient ω R =1,φ R =1.

[0086] The process of calculating the resistance R along the way is as follows:

[0087] Calculate the basic resistance components for slurry flow in pipes:

[0088]

[0089] Calculate the total resistance along the way R:

[0090]

[0091] The calculation result R=8.04MPa means that under the given flow conditions and slurry properties, the total resistance in the entire transportation process is 8.04MPa. This value helps engineers evaluate the required pumping pressure to maintain continuous transportation of the slurry. It can also assist engineers in judging the size of the resistance and then adjusting the concentration and material of the slurry to meet the filling process requirements and achieve better construction goals.

[0092] See also Figure 3 , the method to calculate the resistance deviation is:

[0093] S211: based on the calculation result of the resistance along the way, extract the resistance along the way in the slurry transportation process, obtain the preset standard resistance, and obtain the deviation correlation data;

[0094] S212: Based on the deviation correlation data, through the formula:

[0095]

[0096] Calculate the resistance deviation ratio I and obtain the resistance deviation information, where I represents the resistance deviation ratio, R is the resistance along the route, and R std is the preset standard resistance.

[0097] formula:

[0098]

[0099] Formula explanation:

[0100] Parameter details and how to obtain them:

[0101] The resistance along the way R is calculated by the previous method.

[0102] Standard resistance R std :According to the pipeline resistance that the delivery pump can use to deliver slurry under standard delivery pressure, it is obtained through the delivery record of the delivery pump and reflects the expected resistance value under ideal or normal conditions.

[0103] Calculation example:

[0104] Set the following parameters:

[0105] Along the way resistance R = 8.04MPa, standard resistance R std =8.00MPa.

[0106] The process of calculating the percentage of resistance deviation I is as follows:

[0107] Calculate the difference between actual resistance and standard resistance:

[0108] |RR std|=|8.04-8.00|=0.04MPa

[0109] Calculate the percentage of resistance deviation:

[0110]

[0111] The calculation result I=0.5%, which means that the deviation between the actual resistance and the standard resistance is 0.5%, indicating that the actual operating resistance of the system is very close to the predetermined standard resistance, which is only slightly higher by 0.5%.

[0112] See also Figure 4 , the steps to obtain the delivery pressure adjustment result are:

[0113] S221: Collecting altitude information of the conveying station and the discharge port, obtaining the height difference between the conveying station and the discharge port, and obtaining height difference information;

[0114] S222: Based on the resistance deviation information and the height difference information, combined with the standard delivery pressure, the formula is:

[0115]

[0116] Calculate the adjusted delivery pump pressure P adj , where P adj Indicates the adjusted delivery pump pressure, β P is the nonlinear adjustment coefficient, ρ P is the density of the slurry, g is the acceleration due to gravity, P std is the standard delivery pressure, I is the resistance deviation ratio, h P It is the height difference between the conveying station and the discharge port;

[0117] S223: Based on the adjusted delivery pump pressure P adj , adjust the delivery pressure of the delivery pump to obtain the delivery pressure adjustment result.

[0118] formula:

[0119]

[0120] Parameter details and how to obtain them:

[0121] Standard delivery pressure P std : It is obtained from the design specifications of the delivery pump or from the usage record data, reflecting the normal pressure level that the delivery pump can provide under standard conditions, usually provided by the equipment supplier.

[0122] The resistance deviation ratio I is calculated by the previous method.

[0123] Nonlinear adjustment coefficient β P: It is an empirical value used to adjust the nonlinear characteristics of pressure response. It reflects the amplification or suppression effect of resistance deviation on the actual delivery pressure and is usually adjusted based on historical delivery data.

[0124] Slurry density ρ P : Determined experimentally or calculated from the composition of the slurry.

[0125] Gravitational acceleration g: is a constant with a value of 9.81 m / s 2 , which is used to calculate the pressure difference due to gravity.

[0126] Height difference between conveying station and discharge port h P : The value is obtained through on-site measurement and directly affects the pressure change caused by the altitude difference.

[0127] Calculation example:

[0128] Set the following parameters:

[0129] Standard delivery pressure P std =10MPa, resistance deviation percentage I = 0.05, nonlinear adjustment coefficient β P =2, slurry density ρ P =1200kg / m 3 , gravitational acceleration g = 9.81 m / s 2 , height difference between conveying station and discharge port h P =10m.

[0130] Calculate the adjusted delivery pump pressure P adj The process is as follows:

[0131] Calculate the pressure adjustment due to resistance deviation:

[0132]

[0133] Calculate the hydrostatic pressure due to the height difference:

[0134] P hydrostatic =ρ P ×g×h P =1200×9.81×10=117720Pa=0.118MPa

[0135] Calculate the adjusted delivery pump pressure:

[0136] P adj =P increase +P hydrostatic =11.025+0.118=11.143MPa

[0137] Calculation result P adj=11.143MPa, indicating that the adjusted delivery pump pressure is 11.143MPa, reflecting that under given resistance deviation and physical conditions, a new pressure level needs to be maintained to ensure smooth slurry delivery. This value can help engineers determine whether the delivery pump can provide sufficient delivery pressure, and thus assist engineers in selecting appropriate delivery equipment.

[0138] See also Figure 5 , the steps to obtain the pumping flow adjustment result are:

[0139] S311: Based on the pressure adjustment result, the target delivery volume and target delivery time of the slurry are collected to obtain slurry delivery related data;

[0140] S312: Based on the slurry transport related data, the formula:

[0141]

[0142] Calculate the adjusted pumping flow Q, where Q represents the adjusted pumping flow, V target is the target delivery rate of slurry, T target is the target delivery time, k Q is the flow adjustment coefficient, ∈ Q is a dynamic factor;

[0143] S313: Based on the adjusted pumping flow rate Q, the delivery flow rate of the delivery pump is adjusted to obtain a pumping flow rate adjustment result.

[0144] formula:

[0145]

[0146] Parameter details and how to obtain them:

[0147] Target delivery volume of slurry V target :It is the total amount determined based on production demand or project demand, usually provided by the project manager or production scheduling department, and refers to the volume of slurry that needs to be delivered within a specified time.

[0148] Target delivery time T target :It is set according to the project progress and determines the deadline within which the slurry needs to be transported.

[0149] Pumping flow adjustment coefficient k Q : The coefficient reflects system efficiency and possible energy efficiency losses and is set based on past experience or performance data provided by equipment manufacturers.

[0150] System dynamic factor ∈ Q: It takes into account possible variables that may occur during the transportation process, such as changes in slurry viscosity or changes in pipeline resistance, and is usually estimated based on historical data or simulation results.

[0151] Calculation example:

[0152] Set the following parameters:

[0153] Target delivery volume of slurry V target =500m 3 , target delivery time T target =10h, pumping flow adjustment coefficient k Q =0.95, system dynamic factor∈ Q =0.05.

[0154] The process for calculating the adjusted pumping flow Q is as follows:

[0155] Calculate the basic pumping flow:

[0156]

[0157] Apply the adjustment factor and system dynamics factor:

[0158]

[0159] Calculation result: Q = 49.22 m 3 / h, indicating that the adjusted pumping flow is at least 49.22 cubic meters per hour. The flow takes into account the system efficiency loss and small dynamic changes, ensuring that the slurry can be transported within 10 hours as planned in actual operation. In this way, the project process can be guaranteed to meet the requirements of time and efficiency.

[0160] See also Figure 6 , the method for calculating the delay of slurry delivery is:

[0161] S411: Based on the pumping flow adjustment result, monitor and record the duration of each slow delivery and emergency stop and the corresponding pumping flow to obtain delay-related data;

[0162] S412: Based on the delay-related data, the formula:

[0163]

[0164] Calculate the slurry delivery delay V delayed , to obtain the slurry delivery delay information, where n is the total number of emergency shutdown and slow delivery events, t i is the duration of the ith event, Q actual,i is the actual pumping flow recorded in the i-th event, Q is the adjusted pumping flow, V delayedThe delay in slurry delivery is .

[0165] formula:

[0166]

[0167] Parameter details and how to obtain them:

[0168] The adjusted pumping flow rate Q is calculated by the previous steps.

[0169] Actual pumping flow Q actual,i : The pumping flow rate during each event measured by the flow meter in actual operation. The flow rate is lower than the standard flow rate due to various operating conditions such as pipeline blockage, mechanical failure or other technical problems.

[0170] Event duration t i : The duration of each slow-down or emergency stop event, usually obtained from the system's automatic monitoring log or manual recording.

[0171] Calculation example:

[0172] Set the following parameters:

[0173] Standard pumping flow rate Q = 50m 3 / h, total number of events n = 2,

[0174] First slow delivery event: actual pumping flow Q actual,1 =40m 3 / h, duration t1 = 2h.

[0175] Second slow delivery event: actual pumping flow Q actual,2 =45m 3 / h, duration t2 = 1h.

[0176] Calculate the delivery delay for each event:

[0177] For the first incident:

[0178] ΔV1=(QQ actual,1 )×t1=(50-40)×2=20m 3

[0179] Regarding the second incident:

[0180] ΔV2=(QQ actual,2 )×t2=(50-45)×1=5m 3

[0181] Calculate the total slurry delivery delay:

[0182]

[0183] The calculation reflects the total throughput loss due to operational interruptions and poor performance, the total delivery delay V delayed =

[0184] 25m 3 , indicating that in the two events considered, the slurry delivery volume was reduced by 25 cubic meters due to slow delivery and shutdown.

[0185] See also Figure 7 , the steps for obtaining the compensated slurry delivery control information are:

[0186] S421: Based on the slurry delivery delay information, the remaining delivery time is integrated to obtain flow compensation related data;

[0187] S422: Based on the flow compensation associated data, the formula is:

[0188]

[0189] Calculate the compensated pumping flow Q adjusted , where Q is the adjusted pumping flow, V delayed is the slurry delivery delay, T remaining is the remaining delivery time, γ is the adjustment factor;

[0190] S423: Based on the compensated pumping flow Q adjusted , implement slurry transportation and obtain compensated slurry transportation control information.

[0191] formula:

[0192]

[0193] Parameter details and how to obtain them:

[0194] The adjusted pumping flow rate Q is calculated using the previous method.

[0195] Slurry delivery delay V delayed , calculated using the previous method.

[0196] Remaining delivery time T remaining : It is the remaining time from the current time point to the planned completion time determined in the project or production schedule. The time reflects how long it will take to complete the remaining delivery task.

[0197] Adjustment coefficient γ: It is an empirical value used to fine-tune the calculated compensation amount according to the actual transmission situation to take into account the impact of changes in system efficiency or other operating conditions. The coefficient is usually set based on past operating experience or predictive analysis.

[0198] Calculation example:

[0199] Set the following parameters:

[0200] Adjusted pumping flow Q = 50m 3 / h, slurry delivery delay V delayed =25m 3 , remaining delivery time T remaining =5h, adjustment coefficient γ=1.1.

[0201] Calculate the compensation flow:

[0202]

[0203] Calculation result Q adjusted =55.5m 3 / h, which means that on the original basis, taking into account the transportation delay that has occurred and the remaining time, the compensated pumping flow rate is 55.5 cubic meters per hour. The adjustment ensures that the slurry can compensate for the previous delay in the remaining time and complete the transportation needs of the project.

[0204] A mining filling slurry conveying control system, the mining filling slurry conveying control system is used to execute the above-mentioned mining filling slurry conveying control method, the system comprises:

[0205] The along-the-line resistance analysis module calculates the along-the-line resistance during slurry transportation based on the rheological parameters of the mining filling slurry and the smoothness and length of the transportation pipeline to obtain the along-the-line resistance calculation results;

[0206] The conveying pressure adjustment module compares the along-the-way resistance with the standard resistance based on the calculation result of the along-the-way resistance, calculates the resistance deviation, and adjusts the conveying pressure of the conveying pump according to the standard conveying pressure and the height difference between the conveying station and the discharge port to obtain the conveying pressure adjustment result;

[0207] The delivery flow adjustment module adjusts the pumping flow of the slurry based on the pressure adjustment result, the target delivery volume of the slurry, and the target mining area filling time to obtain the pumping flow adjustment result;

[0208] The delivery delay assessment module records the emergency stop and slow delivery during the slurry delivery process based on the pump flow adjustment result, calculates the slurry delivery delay amount according to the duration of the emergency stop and slow delivery, and obtains the slurry delivery delay information;

[0209] The delivery compensation adjustment module compensates and adjusts the pumping flow based on the slurry delivery delay information and the remaining delivery time to obtain compensated slurry delivery control information.

[0210] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for controlling the conveying of filling slurry for mining, characterized in that: The following steps are involved: Based on the rheological parameters of the mining filling slurry, combined with the smoothness and length of the conveying pipeline, the resistance along the slurry during transportation is calculated, and the calculation results of the resistance along the slurry are obtained; Based on the calculation result of the along-the-way resistance, the along-the-way resistance is compared with the standard resistance, the resistance deviation is calculated, and the delivery pressure of the delivery pump is adjusted according to the standard delivery pressure and the height difference between the delivery station and the discharge port to obtain the delivery pressure adjustment result; Based on the pressure adjustment result, according to the target delivery volume of the slurry and the target mine filling time, the pumping flow rate of the slurry is adjusted to obtain a pumping flow rate adjustment result; Based on the pumping flow adjustment result, the emergency shutdown and slow conveying conditions during the slurry conveying process are recorded, and the slurry conveying delay is calculated according to the duration of the emergency shutdown and slow conveying. According to the slurry conveying delay and the remaining conveying time, the pumping flow is compensated and adjusted to obtain the compensated slurry conveying control information.

2. The method for controlling the conveying of mining filling slurry according to claim 1, characterized in that: The steps for obtaining the calculation results of the resistance along the route are: Based on the mining filling slurry, rheological parameters of the filling slurry are collected, and the rheological parameters include viscosity, yield stress and diffusivity of the slurry; Based on the rheological parameters of the filling slurry, the smoothness and length data of the integrated conveying pipeline are collected to obtain conveying resistance correlation data; Based on the transport resistance correlation data, the formula: Calculate the resistance R along the slurry transportation process and obtain the calculation result of the resistance along the slurry, where R represents the resistance along the slurry transportation process, α R is the adjustment coefficient, ω R and φ R is the weighting coefficient, η R Represents the viscosity of the slurry, τ R Represents the yield stress of the slurry, S R Represents the smoothness of the pipeline, D R Represents the diffusion degree of the slurry, L R Represents the length of the pipe.

3. The method for controlling the conveying of mining filling slurry according to claim 1, characterized in that: The method for calculating the resistance deviation is: Based on the calculation result of the along-the-way resistance, the along-the-way resistance in the slurry transportation process is extracted, and the preset standard resistance is obtained to obtain the deviation correlation data; Based on the deviation correlation data, through the formula: Calculate the resistance deviation ratio I and obtain the resistance deviation information, where I represents the resistance deviation ratio, R is the resistance along the route, and R std is the preset standard resistance.

4. The method for controlling the conveying of mining filling slurry according to claim 3, characterized in that: The steps for obtaining the delivery pressure adjustment result are: Collect the altitude information of the conveying station and the discharge port, obtain the height difference between the conveying station and the discharge port, and obtain the height difference information; Based on the resistance deviation information and height difference information, combined with the standard delivery pressure, the formula is: Calculate the adjusted delivery pump pressure P adj , where P adj Indicates the adjusted delivery pump pressure, β P is the nonlinear adjustment coefficient, ρ P is the density of the slurry, g is the acceleration due to gravity, P std is the standard delivery pressure, I is the resistance deviation ratio, h P It is the height difference between the conveying station and the discharge port; Based on the adjusted delivery pump pressure P adj , adjust the delivery pressure of the delivery pump to obtain the delivery pressure adjustment result.

5. The method for controlling the conveying of filling slurry for mining according to claim 1, characterized in that: The steps for obtaining the pumping flow adjustment result are: Based on the pressure adjustment result, the target delivery volume and target delivery time of the slurry are collected to obtain slurry delivery related data; Based on the slurry transport related data, the formula: Calculate the adjusted pumping flow Q, where Q represents the adjusted pumping flow, V target is the target delivery rate of slurry, T target is the target delivery time, k Q is the flow adjustment coefficient, ∈ Q is a dynamic factor; S313: Based on the adjusted pumping flow rate Q, the delivery flow rate of the delivery pump is adjusted to obtain a pumping flow rate adjustment result.

6. The method for controlling the conveying of mining filling slurry according to claim 1, characterized in that: The method for calculating the delay in slurry delivery is: Based on the pumping flow adjustment result, monitor and record the duration of each slow delivery and emergency shutdown and the corresponding pumping flow to obtain delay-related data; Based on the delay correlation data, the formula: Calculate the slurry delivery delay V del aved, to obtain the slurry delivery delay information, where n is the total number of emergency shutdown and slow delivery events, t i is the duration of the ith event, Q actual，i is the actual pumping flow recorded in the i-th event, Q is the adjusted pumping flow, V del aved is the slurry delivery delay.

7. The method for controlling the conveying of mining filling slurry according to claim 6, characterized in that: The steps for obtaining the compensated slurry delivery control information are as follows: Based on the slurry delivery delay information, the remaining delivery time is integrated to obtain flow compensation related data; Based on the flow compensation associated data, by formula: Calculate the compensated pumping flow Q adjusted , where Q is the adjusted pumping flow, V delayed is the slurry delivery delay, T remaining is the remaining delivery time, γ is the adjustment factor; Based on the compensated pumping flow Q adjusted , implement slurry transportation and obtain compensated slurry transportation control information.

8. A mining filling slurry conveying control system, characterized in that: According to the mining filling slurry conveying control method according to any one of claims 1 to 7, the system comprises: The along-the-line resistance analysis module calculates the along-the-line resistance during slurry transportation based on the rheological parameters of the mining filling slurry and the smoothness and length of the transportation pipeline to obtain the along-the-line resistance calculation results; The conveying pressure adjustment module compares the along-the-way resistance with the standard resistance based on the calculation result of the along-the-way resistance, calculates the resistance deviation, and adjusts the conveying pressure of the conveying pump according to the standard conveying pressure and the height difference between the conveying station and the discharge port to obtain the conveying pressure adjustment result; The delivery flow rate adjustment module adjusts the pumping flow rate of the slurry based on the pressure adjustment result, according to the target delivery volume of the slurry and the target mining area filling time, to obtain a pumping flow rate adjustment result; The delivery delay assessment module records the emergency stop and slow delivery during the slurry delivery process based on the pumping flow adjustment result, calculates the slurry delivery delay amount according to the duration of the emergency stop and slow delivery, and obtains the slurry delivery delay information; The delivery compensation adjustment module performs compensation adjustment on the pumping flow rate based on the slurry delivery delay information and the remaining delivery time to obtain compensated slurry delivery control information.

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