Gangue grouting-coal blending co-processing parameter optimization method and system and application

Abstract

The invention discloses a gangue grouting-coal blending co-processing parameter optimization method and system and application. The optimization method comprises the following steps that S10, the mine coal yield, the raw coal calorific value, the gangue calorific value, the gangue discharge amount, the gangue grouting processing cost per ton, the coal unit selling price and the corresponding calorific value interval and the mine filling requirement are investigated and researched; s20, analyzing constraint conditions of the system, wherein the constraint conditions comprise balance of gangue materials, balance of grouting cost and coal blending income and balance of a coal blending heat value and granularity of grouting gangue; s30, a mine gangue grouting-coal blending co-processing benefit analysis model is constructed, and optimal system parameters under the maximum grouting-coal blending benefit are solved; and S40, according to the determined system parameters, a mine gangue grouting-coal blending co-processing system is established, and the co-processing system comprises a gangue sorting system, a gangue grouting filling material preparation system, a coal blending system, a co-control and optimization system and a conveying system.

Description

Technical Field

[0001] This invention relates to the field of optimized utilization of coal mine solid waste resources, and in particular to a method, system and application for optimizing parameters of gangue grouting-coal blending co-processing. Background Technology

[0002] Coal mining generates large amounts of gangue, which occupies vast amounts of land, damages the ecological environment, and poses safety and environmental risks such as spontaneous combustion, landslides, dust pollution, and water pollution. Existing gangue utilization technologies have limitations. On the one hand, solid backfilling technology is constrained by the scale of disposal and gangue gradation requirements, making large-scale disposal difficult. On the other hand, gangue lacks economically efficient resource utilization pathways and is forced into stockpiling, resulting in the underutilization of its resource value.

[0003] Existing gangue utilization technologies mainly include gangue grouting and coal blending. However, the gangue grouting system and the coal blending system operate independently and lack a unified optimization mechanism, resulting in high gangue disposal costs. Furthermore, the high-calorific-value portion of the grouted gangue is not effectively utilized, and resource value-added cannot be achieved through coal blending.

[0004] Therefore, there is an urgent need to develop a method for the efficient, clean, resource-based, and large-scale disposal of mine gangue. This invention provides a mine gangue grouting-coal blending co-processing system and its optimized design method, which enables the co-processing of gangue grouting and coal blending, maximizing the benefits of mine gangue disposal. Summary of the Invention

[0005] This solution addresses the problems and needs raised above by proposing a method and system for optimizing parameters of gangue grouting-coal blending co-processing. Due to the adoption of the following technical features, it can achieve the above technical objectives and bring about several other technical benefits.

[0006] One objective of this invention is to propose a method for optimizing parameters in the co-processing of gangue grouting and coal blending, comprising the following steps: S10: Survey of coal production in mines Calorific value of raw coal Calorific value of gangue Gangue emissions 1 ton of gangue grouting disposal cost Unit price of coal and corresponding heat generation range Mine filling demand ; S20: Analyze the constraints of the gangue grouting-coal blending co-processing process. The constraints include the balance of gangue materials, the balance between grouting costs and coal blending revenue, and the balance between the calorific value of coal blending and the particle size of grouting gangue. S30: Construct a benefit analysis model for the co-processing of mine gangue grouting and coal blending based on constraints, and solve for the optimal model parameters under the maximum benefit of grouting and coal blending; S40: Based on the determined optimal model parameters, establish a mine gangue grouting-coal blending co-processing system. Based on the real-time monitoring data of the co-processing system and the expected mine benefits, dynamically feedback and optimize the operating parameters of the co-processing system.

[0007] In addition, the gangue grouting-coal blending co-processing parameter optimization method according to the present invention may also have the following technical features: In one example of the invention, in S10, the mine filling requirement... This includes: limiting surface subsidence, controlling overburden migration, preventing rock bursts, controlling water pollution, preventing and extinguishing fires, and achieving large-scale disposal of gangue.

[0008] In one example of the present invention, in S20, the balance of gangue materials includes the sum of the amount of grouting gangue and the amount of coal blending gangue equal to the total amount of gangue processed; the balance of grouting cost and coal blending revenue includes the maximum value of the sum of the two; the balance of coal blending calorific value and grouting gangue particle size includes the gangue slurry conveying performance and coal blending gangue block size both meeting the requirements.

[0009] In one example of the present invention, in step S30, the expression of the benefit analysis model for the co-processing of mine gangue grouting and coal blending is: In the formula, To maximize the benefits of grouting and coal blending; This refers to the amount of coal and gangue used in the blending process. To match the calorific value of coal; The calorific value of raw coal; The heat generated by the gangue, To match the unit price of coal; To align with the lower limit of the coal calorific value range; To align with the upper limit of the calorific value range for coal; This indicates the relationship between the calorific value range of blended coal and its corresponding selling price. Cost of grouting disposal per ton of gangue; For the purpose of filling the mine shaft; The amount of gangue to be filled; This indicates the relationship between the amount of backfilled gangue and the cost of gangue disposal under different backfilling purposes in the mine; This represents the total amount of gangue discharged; To maximize profits from the disposal of gangue in mines.

[0010] In one example of the present invention, in S40, the collaborative processing system includes: a gangue sorting system, a gangue grouting and backfilling material preparation system, a coal blending system, a collaborative control and optimization system, and a conveying system; wherein, the gangue sorting system crushes and sorts the gangue into two parts: one part of the gangue is conveyed by the conveying system to the coal blending system, and the other part of the gangue is conveyed by the conveying system to the gangue grouting and backfilling material preparation system; the collaborative control and optimization system is coupled to the gangue sorting system, the gangue grouting and backfilling material preparation system, the coal blending system, and the conveying system respectively.

[0011] In one example of the present invention, in step S40, the collaborative control and optimization system collects and receives operating data from the gangue sorting system, the gangue grouting and filling material preparation system, the coal blending system, and the conveying system. Specifically, this includes gangue composition data and sorting efficiency, grouting material ratio and performance, coal blending demand and quality, coal blending and grouting cost and benefit and environmental monitoring data, and the output and quality of coal blending raw material flow and coal injection raw material flow.

[0012] In one example of the present invention, in step S40, the operating parameters of the collaborative treatment system are dynamically fed back and optimized based on real-time monitoring data of the collaborative treatment system and expected mine benefits, including the following: The collaborative control and optimization system dynamically optimizes key parameters based on optimal efficiency, maximum gangue disposal volume, backfill strength, and environmental protection requirements. These dynamically optimized key parameters include: the collaborative control and optimization system acquiring key parameters in real time, comparing measured values ​​of the calorific value of the blended coal, sulfur content, slurry concentration, and slurry particle size with determined parameter values, and automatically adjusting the quality of the sorted gangue flow, slurry water flow rate, and desulfurizing agent content based on parameter feedback. These key parameters include process parameters of the gangue sorting system, process parameters of the gangue grouting and backfill material preparation system, and process parameters of the coal blending system.

[0013] Another objective of this invention is to provide a parameter optimization system for the co-processing of mine gangue grouting and coal blending, comprising: The parameter survey module is configured to be used to survey coal production in mines. Calorific value of raw coal Calorific value of gangue Gangue emissions 1 ton of gangue grouting disposal cost Unit price of coal and corresponding heat generation range Mine filling demand ; The constraint analysis module is configured to analyze the constraints of the gangue grouting-coal blending co-processing process. The constraints include the balance of gangue materials, the balance between grouting costs and coal blending revenue, and the balance between the calorific value of coal blending and the particle size of grouting gangue. The model building module is configured to build a benefit analysis model for the co-processing of mine gangue grouting and coal blending based on constraints, and solve for the optimal model parameters under the maximum benefit of grouting and coal blending. The system establishment module is configured to establish a mine gangue grouting-coal blending co-processing system based on the determined optimal model parameters, and to dynamically feedback and optimize the operating parameters of the co-processing system based on real-time monitoring data and expected mine benefits.

[0014] In one example of the present invention, the expression for the benefit analysis model of mine gangue grouting-coal blending is as follows: In the formula, To maximize the benefits of grouting and coal blending; This refers to the amount of coal and gangue used in the blending process. To match the calorific value of coal; The calorific value of raw coal; The heat generated by the gangue, To match the unit price of coal; To align with the lower limit of the coal calorific value range; To align with the upper limit of the calorific value range for coal; This indicates the relationship between the calorific value range of blended coal and its corresponding selling price. Cost of grouting disposal per ton of gangue; For the purpose of filling the mine shaft; The amount of gangue to be filled; This indicates the relationship between the amount of backfilled gangue and the cost of gangue disposal under different backfilling purposes in the mine; This represents the total amount of gangue discharged; To maximize profits from the disposal of gangue in mines.

[0015] Another objective of this invention is to propose an application of the above-described method for optimizing parameters of gangue grouting-coal blending in the field of coal mine solid waste resource utilization.

[0016] Compared with the prior art, the present invention has the following beneficial effects: An integrated collaborative system for gangue grouting and coal blending was constructed, achieving efficient synergy between gangue disposal and resource utilization. This transforms gangue disposal from a mere cost center into a potential profit center, meeting mine safety backfilling requirements (such as controlling settlement and preventing disasters) while enabling large-scale, high-value-added resource utilization of solid waste. It fundamentally reduces the risks of land occupation, spontaneous combustion, and environmental pollution associated with gangue storage. By blending gangue with coal, coal resources are saved, achieving a high degree of unity between economic benefits and environmental protection, aligning with the direction of green mine construction and demonstrating significant promotional value. A collaborative disposal benefit analysis model was constructed with the goal of maximizing economic benefits, comprehensively considering multiple constraints such as material balance, cost-benefit balance, and product quality balance. This model can significantly reduce gangue disposal costs and maximize the overall profits of mining enterprises.

[0017] The preferred embodiments of the invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. The drawings are merely illustrative of some embodiments of the present invention and are not intended to limit the scope of the present invention to all embodiments.

[0019] Figure 1 This is a flowchart of a method for optimizing parameters of gangue grouting-coal blending co-processing according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a mine gangue grouting-coal blending co-processing system according to an embodiment of the present invention; Figure 3 This is a structural diagram of a mine gangue grouting-coal blending co-processing system according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0022] According to a first aspect of the present invention, a method for optimizing parameters of gangue grouting-coal blending co-processing is provided, such as... Figure 1 As shown, it includes the following steps: S10: Survey of coal production in mines Calorific value of raw coal Calorific value of gangue Gangue emissions 1 ton of gangue grouting disposal cost Unit price of coal and corresponding heat generation range Mine filling demand ; S20: Analyze the constraints of the gangue grouting-coal blending co-processing process. The constraints include the balance of gangue materials, the balance between grouting costs and coal blending revenue, and the balance between the calorific value of coal blending and the particle size of grouting gangue. S30: Construct a benefit analysis model for the co-processing of mine gangue grouting and coal blending based on constraints, and solve for the optimal model parameters under the maximum benefit of grouting and coal blending; S40: Based on the determined optimal model parameters, establish a mine gangue grouting-coal blending co-processing system. Based on the real-time monitoring data of the co-processing system and the expected mine benefits, dynamically feedback and optimize the operating parameters of the co-processing system.

[0023] This optimization method constructs an integrated collaborative system for gangue grouting and coal blending, achieving efficient synergy between gangue disposal and resource utilization. It transforms gangue disposal from a mere cost center into a potential profit center, meeting mine safety filling requirements (such as controlling settlement and preventing disasters) while enabling large-scale, high-value-added resource utilization of solid waste. This fundamentally reduces the risks of land occupation, spontaneous combustion, and environmental pollution associated with gangue storage. By blending gangue with coal, it saves coal resources, achieving a high degree of unity between economic benefits and environmental protection, aligning with the direction of green mine construction and demonstrating significant promotional value. A collaborative disposal benefit analysis model, aiming to maximize economic benefits, is constructed, comprehensively considering multiple constraints such as material balance, cost-benefit balance, and product quality balance. This model can significantly reduce gangue disposal costs and maximize the overall profits of mining enterprises.

[0024] In one example of the invention, in S10, the mine filling requirement... This includes: limiting surface subsidence, controlling overburden migration, preventing rock bursts, controlling water pollution, preventing and extinguishing fires, and achieving large-scale disposal of gangue.

[0025] In one example of the present invention, in S20, the balance of gangue materials includes the sum of the amount of grouting gangue and the amount of coal blending gangue equal to the total amount of gangue processed; the balance of grouting cost and coal blending revenue includes the maximum value of the sum of the two; the balance of coal blending calorific value and grouting gangue particle size includes the gangue slurry conveying performance and coal blending gangue block size both meeting the requirements.

[0026] In one example of the present invention, in step S30, the expression of the benefit analysis model for the co-processing of mine gangue grouting and coal blending is: In the formula, To maximize the benefits of grouting and coal blending; This refers to the amount of coal and gangue used in the blending process. To match the calorific value of coal; The calorific value of raw coal; The heat generated by the gangue, To match the unit price of coal; To align with the lower limit of the coal calorific value range; To align with the upper limit of the calorific value range for coal; This indicates the relationship between the calorific value range of blended coal and its corresponding selling price. Cost of grouting disposal per ton of gangue; For the purpose of filling the mine shaft; The amount of gangue to be filled; This indicates the relationship between the amount of backfilled gangue and the cost of gangue disposal under different backfilling purposes in the mine; This represents the total amount of gangue discharged; To maximize profits from the disposal of gangue in mines.

[0027] In one example of the present invention, such as Figure 2 , Figure 3 As shown, in S40, the collaborative processing system includes: a gangue sorting system, a gangue grouting and filling material preparation system, a coal blending system, a collaborative control and optimization system, and a conveying system; wherein, the gangue sorting system crushes and sorts the gangue into two parts: one part of the gangue is conveyed by the conveying system to the coal blending system, and the other part of the gangue is conveyed by the conveying system to the gangue grouting and filling material preparation system; the collaborative control and optimization system is coupled to the gangue sorting system, the gangue grouting and filling material preparation system, the coal blending system, and the conveying system respectively.

[0028] In one example of the present invention, in step S40, the collaborative control and optimization system collects and receives operating data from the gangue sorting system, the gangue grouting and filling material preparation system, the coal blending system, and the conveying system. Specifically, this includes gangue composition data and sorting efficiency, grouting material ratio and performance, coal blending demand and quality, coal blending and grouting cost and benefit and environmental monitoring data, and the output and quality of coal blending raw material flow and coal injection raw material flow.

[0029] In one example of the present invention, in step S40, the operating parameters of the collaborative treatment system are dynamically fed back and optimized based on real-time monitoring data of the collaborative treatment system and expected mine benefits, including the following: The collaborative control and optimization system dynamically optimizes key parameters based on optimal efficiency, maximum gangue disposal volume, backfill strength, and environmental protection requirements. These dynamically optimized key parameters include: the collaborative control and optimization system acquiring key parameters in real time, comparing measured values ​​of the calorific value of the blended coal, sulfur content, slurry concentration, and slurry particle size with determined parameter values, and automatically adjusting the quality of the sorted gangue flow, slurry water flow rate, and desulfurizing agent content based on parameter feedback. These key parameters include process parameters of the gangue sorting system, process parameters of the gangue grouting and backfill material preparation system, and process parameters of the coal blending system.

[0030] A parameter optimization system for mine gangue grouting-coal blending co-processing according to a second aspect of the present invention includes: The parameter survey module is configured to be used to survey coal production in mines. Calorific value of raw coal Calorific value of gangue Gangue emissions 1 ton of gangue grouting disposal cost Unit price of coal and corresponding heat generation range Mine filling demand ; The constraint analysis module is configured to analyze the constraints of the gangue grouting-coal blending co-processing process. The constraints include the balance of gangue materials, the balance between grouting costs and coal blending revenue, and the balance between the calorific value of coal blending and the particle size of grouting gangue. The model building module is configured to build a benefit analysis model for the co-processing of mine gangue grouting and coal blending based on constraints, and solve for the optimal model parameters under the maximum benefit of grouting and coal blending. The system establishment module is configured to establish a mine gangue grouting-coal blending co-processing system based on the determined optimal model parameters, and to dynamically feedback and optimize the operating parameters of the co-processing system based on real-time monitoring data and expected mine benefits.

[0031] This optimized system constructs an integrated collaborative system for gangue grouting and coal blending, achieving efficient synergy between gangue disposal and resource utilization. It transforms gangue disposal from a mere cost center into a potential profit center, meeting mine safety filling requirements (such as controlling settlement and preventing disasters) while enabling large-scale, high-value-added resource utilization of solid waste. It fundamentally reduces the risks of land occupation, spontaneous combustion, and environmental pollution associated with gangue storage. By blending gangue with coal, it saves coal resources, achieving a high degree of unity between economic benefits and environmental protection, aligning with the direction of green mine construction and demonstrating significant promotional value. A collaborative disposal benefit analysis model, aiming to maximize economic benefits, was constructed, comprehensively considering multiple constraints such as material balance, cost-benefit balance, and product quality balance. This model can significantly reduce gangue disposal costs and maximize the overall profits of mining enterprises.

[0032] In one example of the present invention, the balance of gangue materials includes the sum of the amount of grouting gangue and the amount of coal blending gangue equal to the total amount of gangue processed; the balance of grouting cost and coal blending revenue includes the maximum value of the sum of the two; the balance of coal blending calorific value and grouting gangue particle size includes the gangue slurry conveying performance and coal blending gangue block size both meeting the requirements.

[0033] In one example of the present invention, the expression for the benefit analysis model of mine gangue grouting-coal blending is as follows: In the formula, To maximize the benefits of grouting and coal blending; This refers to the amount of coal and gangue used in the blending process. To match the calorific value of coal; The calorific value of raw coal; The heat generated by the gangue, To match the unit price of coal; To align with the lower limit of the coal calorific value range; To align with the upper limit of the calorific value range for coal; This indicates the relationship between the calorific value range of blended coal and its corresponding selling price. Cost of grouting disposal per ton of gangue; For the purpose of filling the mine shaft; The amount of gangue to be filled; This indicates the relationship between the amount of backfilled gangue and the cost of gangue disposal under different backfilling purposes in the mine; This represents the total amount of gangue discharged; To maximize profits from the disposal of gangue in mines.

[0034] It should be noted that the mine gangue grouting-coal blending co-processing parameter optimization system of the present invention can also perform any of the processing as described in the previously described gangue grouting-coal blending co-processing parameter optimization method, the specific details of which will not be repeated here.

[0035] The application of the above-described method for optimizing parameters of gangue grouting-coal blending co-processing according to a third aspect of the present invention in the field of coal mine solid waste resource utilization.

[0036] Specific examples: According to the present invention, a method for optimizing parameters of gangue grouting-coal blending co-processing includes the following steps: S10: Survey of coal production in mines Calorific value of raw coal Calorific value of gangue Annual emissions of gangue The relationship between the unit price of coal and its calorific value range is as follows: S20: Analyze the system constraints, including the balance of gangue materials, to ensure that the sum of the grouting gangue and the coal blending gangue meets the annual gangue discharge target. The entire process involves balancing grouting costs with coal blending revenue. The mine's goaf has a grouting and filling capacity of 2 million tons, while the existing grouting and filling system has a capacity of 1.35 million tons. Grouting and filling requirements include pressure reduction and fire prevention, as well as prevention of rockbursts. The minimum amount of gangue to fill is 300,000 tons. The relationship between gangue grouting and filling requirements, the amount of gangue to be grouted, and the cost per ton of gangue is as follows: S30: Construct a benefit analysis model for the co-processing of mine gangue grouting and coal blending, and solve for the optimal system parameters under the condition of grouting-coal blending maximizing benefits. The benefit analysis model is determined based on the constraints as follows: S40: Based on the determined system parameters, establish a mine gangue grouting-coal blending co-processing system, which consists of a gangue sorting system, a gangue grouting filling material preparation system, a coal blending system, a co-control and optimization system, and a conveying system. Specifically, the gangue sorting system separates the crushed gangue from the coal washing plant and the main and auxiliary shaft hoisting into two parts: one part of the gangue is transported by the conveying system to the coal blending system, and the other part of the gangue is transported by the conveying system to the gangue grouting and filling material preparation system; the gangue grouting and filling material preparation system mixes the crushed gangue with water to make gangue slurry, which is then transported by the gangue slurry conveying system to the underground goaf for filling; the coal blending system blends gangue with mined coal; the collaborative control and optimization system receives operating data from each component system, including real-time and historical data of gangue composition, sorting efficiency, output and quality of coal blending raw material flow and coal injection raw material flow, grouting material ratio and performance, coal blending demand and quality, cost data, and environmental monitoring data. The collaborative control and optimization system dynamically optimizes key parameters based on optimal efficiency, maximum gangue disposal volume, backfill strength, and environmental protection requirements. These parameters include those for the gangue sorting system, the gangue grouting and backfill material preparation system, and the coal blending system. The gangue sorting system parameters include sorting density, air volume, reagent dosage, gangue crushing particle size, amount of grouting gangue, and amount of gangue in the blended coal. The gangue grouting and backfill material preparation system parameters include gangue particle size and gradation, gangue slurry concentration, gangue slurry conveying performance, and gangue slurry flowability. The coal blending system parameters include gangue content, raw coal calorific value, blended coal calorific value, and the coal-gangue ratio in the blended coal. The real-time parameters obtained by the collaborative control and optimization system indicate that when the concentration of gangue slurry is too high, the slurry water flow rate is automatically reduced; when the sulfur content of the blended coal exceeds the standard, a desulfurizing agent is added; when the calorific value of the blended coal is lower than the set parameter value, the quality of the gangue flow is reduced; and when the gangue slurry particles are too large, the conveying system is adjusted to perform multi-stage crushing and screening of the grouting gangue flow.

[0037] Conclusion and Analysis: The gangue grouting-coal blending co-processing parameter optimization method of this invention, through systematic data acquisition, collaborative modeling under multiple constraints, and dynamic optimization, achieves a fundamental transformation of gangue disposal from "end-of-pipe treatment" to "resource utilization and efficiency improvement." While ensuring that the backfilling requirements for fire prevention and rockburst control in the target mine are met, this method maximizes the added value of gangue and the overall economic benefits of the system, resulting in an additional 87.66 million yuan in coal sales profit from mining coal resources in rockburst-prone areas. The constructed collaborative control and optimization system possesses multi-parameter linkage, real-time feedback, and intelligent decision-making capabilities, significantly enhancing the adaptability, economy, and greenness of the gangue disposal process. It provides a reliable technical path for green coal mining and solid waste resource utilization, and has broad engineering application prospects and industry promotion value.

[0038] The foregoing description, with reference to preferred embodiments, details the exemplary implementation of the proposed method and system for optimizing parameters of gangue grouting-coal blending co-processing. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. A method for optimizing parameters of gangue grouting-coal blending co-processing, characterized in that, Includes the following steps: S10: Survey of coal production in mines Calorific value of raw coal Calorific value of gangue Gangue emissions 1 ton of gangue grouting disposal cost Unit price of coal and corresponding heat generation range Mine filling demand ; S20: Analyze the constraints of the gangue grouting-coal blending co-processing process. The constraints include the balance of gangue materials, the balance between grouting costs and coal blending revenue, and the balance between the calorific value of coal blending and the particle size of grouting gangue. S30: Construct a benefit analysis model for the co-processing of mine gangue grouting and coal blending based on constraints, and solve for the optimal model parameters under the maximum benefit of grouting and coal blending; S40: Based on the determined optimal model parameters, establish a mine gangue grouting-coal blending co-processing system. Based on the real-time monitoring data of the co-processing system and the expected mine benefits, dynamically feedback and optimize the operating parameters of the co-processing system.

2. The method for optimizing parameters of gangue grouting-coal blending co-processing according to claim 1, characterized in that, In S10, the mine filling requirement This includes: limiting surface subsidence, controlling overburden migration, preventing rock bursts, controlling water pollution, preventing and extinguishing fires, and achieving large-scale disposal of gangue.

3. The method for optimizing parameters of gangue grouting-coal blending co-processing according to claim 1, characterized in that, In S20, the balance of gangue materials includes the sum of the amount of grouting gangue and the amount of coal blending gangue equal to the total amount of gangue processed; the balance of grouting cost and coal blending revenue includes the maximum value of the sum of the two; the balance of coal blending calorific value and grouting gangue particle size includes the fact that both the gangue slurry conveying performance and the coal blending gangue block size meet the requirements.

4. The method for optimizing parameters of gangue grouting-coal blending co-processing according to claim 1, characterized in that, In step S30, the expression for the benefit analysis model of mine gangue grouting-coal blending is: In the formula, To maximize the benefits of grouting and coal blending; This refers to the amount of coal and gangue used in the blending process. To match the calorific value of coal; The calorific value of raw coal; The heat generated by the gangue, To match the unit price of coal; To align with the lower limit of the coal calorific value range; To align with the upper limit of the calorific value range for coal; This indicates the relationship between the calorific value range of blended coal and its corresponding selling price. Cost of grouting disposal per ton of gangue; For the purpose of filling the mine shaft; The amount of gangue to be filled; This indicates the relationship between the amount of backfilled gangue and the cost of gangue disposal under different backfilling purposes in the mine; This represents the total amount of gangue discharged; To maximize profits from the disposal of gangue in mines.

5. The method for optimizing parameters of gangue grouting-coal blending co-processing according to claim 1, characterized in that, In S40, the collaborative processing system includes: a gangue sorting system, a gangue grouting and filling material preparation system, a coal blending system, a collaborative control and optimization system, and a conveying system; wherein, the gangue sorting system crushes and sorts the gangue into two parts: one part of the gangue is conveyed by the conveying system to the coal blending system, and the other part of the gangue is conveyed by the conveying system to the gangue grouting and filling material preparation system; the collaborative control and optimization system is coupled to the gangue sorting system, the gangue grouting and filling material preparation system, the coal blending system, and the conveying system respectively.

6. The method for optimizing parameters of gangue grouting-coal blending co-processing according to claim 5, characterized in that, In step S40, the collaborative control and optimization system collects and receives operating data from the gangue sorting system, the gangue grouting and filling material preparation system, the coal blending system, and the conveying system. Specifically, this includes gangue composition data and sorting efficiency, grouting material ratio and performance, coal blending demand and quality, coal blending and grouting cost and benefit, environmental monitoring data, and the output and quality of coal blending raw material flow and coal injection raw material flow.

7. The method for optimizing parameters of gangue grouting-coal blending co-processing according to claim 5, characterized in that, In step S40, based on real-time monitoring data of the co-processing system and expected mine benefits, the operating parameters of the co-processing system are dynamically fed back and optimized, including the following: The collaborative control and optimization system dynamically optimizes key parameters based on optimal efficiency, maximum gangue disposal volume, backfill strength, and environmental protection requirements. These dynamically optimized key parameters include: the collaborative control and optimization system acquiring key parameters in real time, comparing measured values ​​of the calorific value of the blended coal, sulfur content, slurry concentration, and slurry particle size with determined parameter values, and automatically adjusting the quality of the sorted gangue flow, slurry water flow rate, and desulfurizing agent content based on parameter feedback. These key parameters include process parameters of the gangue sorting system, process parameters of the gangue grouting and backfill material preparation system, and process parameters of the coal blending system.

8. A parameter optimization system for mine gangue grouting-coal blending co-processing, characterized in that, include: The parameter survey module is configured to be used to survey coal production in mines. Calorific value of raw coal Calorific value of gangue Gangue emissions 1 ton of gangue grouting disposal cost Unit price of coal and corresponding heat generation range Mine filling demand ; The constraint analysis module is configured to analyze the constraints of the gangue grouting-coal blending co-processing process. The constraints include the balance of gangue materials, the balance between grouting costs and coal blending revenue, and the balance between the calorific value of coal blending and the particle size of grouting gangue. The model building module is configured to build a benefit analysis model for the co-processing of mine gangue grouting and coal blending based on constraints, and solve for the optimal model parameters under the maximum benefit of grouting and coal blending. The system establishment module is configured to establish a mine gangue grouting-coal blending co-processing system based on the determined optimal model parameters, and to dynamically feedback and optimize the operating parameters of the co-processing system based on real-time monitoring data and expected mine benefits.

9. The mine gangue grouting-coal blending co-processing parameter optimization system according to claim 8, characterized in that, The expression for the benefit analysis model of mine gangue grouting-coal blending is as follows: In the formula, To maximize the benefits of grouting and coal blending; This refers to the amount of coal and gangue used in the blending process. To match the calorific value of coal; The calorific value of raw coal; The heat generated by the gangue, To match the unit price of coal; To align with the lower limit of the coal calorific value range; To align with the upper limit of the calorific value range for coal; This indicates the relationship between the calorific value range of blended coal and its corresponding selling price. Cost of grouting disposal per ton of gangue; For the purpose of filling the mine shaft; The amount of gangue to be filled; This indicates the relationship between the amount of backfilled gangue and the cost of gangue disposal under different backfilling purposes in the mine; This represents the total amount of gangue discharged; To maximize profits from the disposal of gangue in mines.

10. The application of the parameter optimization method for gangue grouting-coal blending co-processing as described in any one of claims 1 to 7 in the field of coal mine solid waste resource utilization.

Images