A design method and system for continuous steady-state ore flow mining in open-pit mines

Abstract

This invention discloses a design method and system for continuous steady-state ore flow mining in open-pit mines, relating to the field of open-pit mining. It includes: constructing a three-dimensional geological model of the mine; setting multiple ore loading points within the target mining area of ​​the three-dimensional geological model, wherein the mining range of each ore loading point is a circle centered on the loading point, with a radius of R... i Let the circle be the initial mining radius; taking each ore loading point as the occurrence point of the Thiessen polygon, within the target mining area, the position of the occurrence point and the corresponding R are iteratively adjusted based on the Thiessen polygon principle. i The process continues until the average grade of the ore within the Thiessen polygon mining blocks generated from each point reaches the target ore grade K after mixing. The points where the Thiessen polygons were generated after iterative adjustments are then used as the final ore loading points, and the extent of the Thiessen polygons is defined as the final mining area, resulting in multiple mining blocks. Ultimately, this achieves overall optimization of the mining area division and grade control, as well as the continuous output path of the steady-state ore flow, thereby improving the production efficiency and operational economy of the entire mining process.

Description

Technical Field

[0001] This invention relates to the field of open-pit mining technology, and in particular to a design method and system for continuous steady-state ore flow mining in open-pit mines. Background Technology

[0002] In large-scale open-pit mining, the division of mining blocks is a core prerequisite. Reasonable block division not only ensures efficient resource utilization but also lays the foundation for subsequent transportation network construction and production efficiency improvement, directly determining the rationality and economy of the mining process. Therefore, the scientific and precise nature of mining block division is crucial and a core prerequisite for achieving continuous and steady-state ore output.

[0003] Currently, the mainstream methods for dividing mining blocks in the industry are mostly based on geometric boundaries and mining sequence. This involves fixed step divisions or empirical zoning. However, these divisions often result in concentrations of either low-grade or high-grade ore within the designated areas. Such methods fail to consider the spatial distribution differences in ore grade, leading to significant fluctuations in ore grade (purity) across different areas both temporally and spatially. This makes it impossible to achieve homogeneous mixing of grades through zoning. Therefore, to maintain stable production, concentrators need to construct large-scale blending sites or ore blending systems after mining, conducting frequent and costly blending operations to mix ores of different grades to achieve the target grade range. This increases operational complexity and facility investment costs, and makes it difficult to guarantee the stability of subsequent ore output. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a design method and system for continuous steady-state ore flow mining in open-pit mines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for designing continuous steady-state ore flow mining in open-pit mines, comprising the following steps: Construct a three-dimensional geological model of the mine based on geological exploration data of the target mine; Multiple ore loading points are set within the target mining area of ​​the three-dimensional geological model of the mine. The mining range of each ore loading point is defined by a circle centered at the loading point, with radius R. i Let i be the circle with the initial mining radius; where i is the number of ore loading points. Taking each ore loading point as the occurrence point of the Thiessen polygon, within the target mining area, the position of the occurrence point and the corresponding initial mining radius R are iteratively adjusted based on the Thiessen polygon principle. i, until the average ore grade after mixing in the Thiessen polygon mining blocks generated from each generating point reaches the target ore grade K; taking the generating points of the Thiessen polygons after iterative adjustment as the final ore loading points, and the range of the Thiessen polygons as the final mining range, to obtain a plurality of divided mining blocks.

[0006] Preferably, the target ore grade K has a fluctuation range, A%<K<B%, wherein both A and B are positive integers; the step of iteratively adjusting the position of generating points and the initial mining radius R corresponding to the generating points based on the Thiessen polygon principle i , until the average ore grade after mixing in each Thiessen polygon mining block generated from each generating point reaches the target ore grade K, which specifically comprises: Based on the assigned spatial ore grade data in the three-dimensional geological model of the mine, grade statistics and weighted average calculation are performed on the ore in the mining range corresponding to each generating point, to obtain the theoretical average grade of the ore in the mining range corresponding to each generating point; the theoretical average grade is compared with the target ore grade K, and when the theoretical average grade is not within the fluctuation range of K, the position of the generating point and the initial mining radius R are iteratively adjusted i until the theoretical average grade of mixed ore calculated for each mining block is within the fluctuation range of the target ore grade K, so as to obtain a plurality of divided mining blocks.

[0007] Preferably, the target ore grade K of the target mine is determined according to the ore grade distribution characteristics at each point inside the ore body restored by the three-dimensional geological model, the process requirements of the concentration plant and the production capacity of the mine.

[0008] Preferably, the target ore grade , wherein, i =a, b, c..., a , b , c ... represent mining points with different ore grades in the mining block, N represents the total number of mining points, represents the ore grade of mining points with different ore grades in the mining block.

[0009] Preferably, the position of the generating points and the initial mining radius R are adjusted according to the equipment parameters for mining and transportation, as well as the mine geological exploration data and real-time mine grade monitoring data i until the Thiessen polygons cover the entire target mining area, and the overall ore grade of each mining block is within the fluctuation range of K.

[0010] Preferably, the initial mining radius R i is not greater than the maximum working radius of the mining equipment, and does not exceed the transportation distance that enables the transportation vehicle to achieve optimal transportation efficiency and the lowest cost within the service range of the loading point.

[0011] Preferably, the method further includes constructing the optimal transportation network based on the block division results of the target mining area, specifically including the following steps: With the goal of minimizing the transportation distance from the mining point to the loading point of its respective block, determine the shortest transportation path from all mining points within each mining block to the loading point of that block; With the goal of maximizing transportation efficiency and optimizing road conditions, determine the balanced shortest access path from the loading point of adjacent blocks to the public transportation road; Based on the topography and spatial topology of the mining area, plan the shortest main transportation routes from each loading point to the concentrator. A complete transportation network is constructed based on the shortest transportation path, the balanced shortest access path, and the main roads. With the goal of minimizing transportation costs, the optimal transportation network is obtained by iteratively optimizing the route and layout of the transportation network.

[0012] This invention also proposes a design system for continuous steady-state ore flow mining in open-pit mines, comprising: The model building module is used to build a three-dimensional geological model of the mine based on the geological exploration data of the target mine. The initial parameter setting module is used to set multiple ore loading points within the target mining area of ​​the 3D geological model of the mine. The mining range of each ore loading point is a circle centered on the loading point, with an area of ​​R. i Let i be the circle with the initial mining radius; where i is the number of ore loading points. The mining block division module is used to iteratively adjust the position of each ore loading point and the corresponding initial mining radius R within the target mining area, based on the Thiessen polygon principle, using each ore loading point as the occurrence point of a Thiessen polygon. i The process continues until the average grade of the ore in the Thiessen polygon mining blocks generated by each occurrence point reaches the target ore grade K after mixing. The occurrence point of the iteratively adjusted Thiessen polygon is taken as the final ore loading point, and the range of the Thiessen polygon is taken as the final mining range, resulting in multiple mining blocks.

[0013] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement any of the steps in the open-pit mine continuous steady-state ore flow mining design method.

[0014] The present invention also provides a computer-readable storage medium storing a computer program that, when loaded by a processor, can execute any of the steps in the open-pit mine continuous steady-state ore flow mining design method.

[0015] The open-pit mine continuous steady-state ore flow mining design method provided by this invention has the following beneficial effects: This invention delineates a circular mining area using loading points, and iteratively optimizes the location and mining radius by setting these loading points as the generating points of Thiessen polygons. Utilizing the spatial characteristics of Thiessen polygons—full coverage and the shortest distance between the mining point and its corresponding loading point within a unit—high-, low-, and medium-grade ore bodies within the area are uniformly grouped into the same polygonal block. Through ore pre-mixing within the block, the average grade of each block is stabilized to the target grade K. This zoning model achieves homogenization of the grade at the front end of mining, ensuring uniform and controllable ore grade in each block, eliminating grade imbalance at the spatial level, and minimizing fluctuations in ore grade across different time periods. Simultaneously, it eliminates the need for large-scale back-end blending sites and frequent ore blending processes, significantly reducing investment in supporting facilities and ore blending operation costs, thereby improving the production efficiency and operational economy of the entire mining process. Attached Figure Description

[0016] To more clearly illustrate the embodiments and design schemes of the present invention, the accompanying drawings required for this embodiment will be briefly described below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This specification provides a schematic flowchart of a design method for continuous steady-state ore flow mining in open-pit mines. Figure 2 This is a schematic diagram of the loading point provided in this manual; Figure 3 This is a schematic diagram illustrating the process of dividing the target mining area using the Thiessen polygon principle, as provided in this specification. Figure 4 This is a schematic diagram showing the distribution of mining blocks obtained by further subdividing the mining area based on the shape and grade distribution of the ore layer using the Thiessen polygon principle, as provided in this specification. Figure 5 This is a diagram showing the shortest path from the loading point to the transport route, as provided in this manual. Figure 6 This manual provides a schematic diagram of the optimal transportation route from the transport road to the main road and ore warehouse and concentrator. Figure 7 This is a schematic diagram of a continuous steady-state ore flow mining and output system provided in this specification. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this invention.

[0019] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] This invention, based on geological exploration data and a three-dimensional geological model, combined with mining and transportation equipment parameters, utilizes the Thiessen polygon principle to pre-plan and zone the ore layer according to its shape and grade distribution before mining, dividing it into benches and mining areas. It determines the loading point location, mining range, block boundaries, and ore blending scheme, providing a stable, controllable, and executable mining layout for actual on-site mining.

[0021] Based on this, the present invention provides a continuous steady-state ore flow mining design method for open-pit mines, applicable to the mining and transportation stages of open-pit mines. Specifically, it is a continuous steady-state ore flow mining design method for open-pit mines based on the Thiessen polygon principle, such as... Figure 1 As shown, the specific steps include: S101: Obtain geological exploration data of the target mine and construct a three-dimensional geological model of the mine based on the data. In the three-dimensional geological model, each coordinate point has a known ore grade, which is calculated based on the ore layer distribution after pre-mining surveys. Clearly define the spatial distribution of ore and grade in the target mine, and then set a target ore grade K and a fluctuation range A%~B% that meet production requirements as the core standard for subsequent mining zoning and ore blending. Specifically, based on the ore grade distribution characteristics at various points within the ore body reconstructed by the three-dimensional geological model, the process requirements of the concentrator, and the mine's production capacity, determine the target ore grade K of the target mine.

[0022] This invention can obtain raw mine geological exploration data by organizing borehole data, geological profiles, geophysical data, etc., and perform data cleaning and other preprocessing. Then, it can use interpolation algorithms (such as Kriging interpolation) to construct strata and perform stratigraphic modeling. After identifying fault data, it can establish fault structures and fault models, construct the corresponding three-dimensional geological model of the mine, and finally visualize and render the model. Commonly used tools include OpenGL, VTK, or professional platforms such as GemPy and Leapfrog.

[0023] S102: Delineate the target mining area in the above-mentioned three-dimensional geological model of the mine, and set up multiple ore loading points within the target mining area. Mining will be carried out on a unit basis, with the mining range (mining block) of each loading point being a circle centered on the loading point and extending to R. i A circle with radius R; where i is the number of ore loading points and R is the initial mining radius. i The determination is based on a comprehensive consideration of the ore grade distribution characteristics around the corresponding ore loading point, the operating radius of the mining equipment, and the passage and scheduling parameters of the transportation equipment. For example... Figure 2 As shown in the figure, a, b, and c represent ore mining points with different ore grades within the mining area of ​​the loading point.

[0024] Specifically, the initial mining radius R is determined based on grade mixing constraints, mining equipment constraints, and transportation equipment constraints. i The minimum value.

[0025] The grade mixing constraint is based on the ore grade distribution characteristics reconstructed from a three-dimensional geological model of the mine, ensuring that the mixing of ores of different grades within the initial mining radius can achieve the target ore grade K; the mining equipment constraint is R. i The radius of the transport equipment shall not exceed the maximum operating radius of the mining equipment to ensure normal mining operations at all points within the block. The transport equipment constraint is R. i The transport distance should not exceed the distance that maximizes the efficiency and minimizes the cost of transporting vehicles within the service area of ​​the loading point.

[0026] S103. Within the mining area, the mining area, which was originally divided according to the shape and grade distribution of the ore layer, is further subdivided based on the Thiessen polygon principle. Specifically, each loading point is taken as the point where the Thiessen polygon originates, and R... i Using the radius R, the target mining area is divided according to the Thiessen polygon principle, resulting in multiple mining blocks. Specifically, based on the equipment parameters for mining and transportation, as well as mine geological exploration data and real-time mine grade monitoring, the location and radius R of the loading point (occurrence point) are adjusted. i This process continues until the Thiessen polygon completely covers the entire target mining area, and the overall ore grade of each mining block reaches the target value; the process of dividing the target mining area using the Thiessen polygon is as follows: Figure 3 As shown, mining areas are divided based on the shape and grade distribution of the ore layers, and the resulting mining blocks are distributed as follows. Figure 4 As shown, the gray area represents the mining area with an overall ore grade of K, and the brown area represents the transportation routes between the mining areas.

[0027] Based on the Thiessen polygon principle, the location of each occurrence point and the corresponding initial mining radius R are iteratively adjusted. iuntil the average grade of ore after mixing in each Voronoi polygon mining block generated by each generating point reaches the target ore grade K, a plurality of divided mining blocks are obtained, and the block division of the target mining area is completed.

[0028] Based on the Voronoi polygon principle, the mining area divided according to the shape and grade distribution of the ore seam is divided, specifically divided according to the nearest attribution principle: taking the ore loading point as the generating point, for any mining point in the area, it is attributed to the mining block which the nearest generating point belongs to.

[0029] In this embodiment, iteratively adjusting the position of the generating point and the initial mining radius R i until the average grade of ore after mixing in each mining block reaches the target ore grade K, which is specifically as follows: Based on the assigned ore spatial grade data in the three-dimensional geological model of the mine, grade statistics and weighted average calculation are performed on the ore within the mining range corresponding to each generating point, to obtain the theoretical average grade of ore within the mining range corresponding to each generating point; the theoretical average grade is compared with the target ore grade K, and when the theoretical average grade is not within the fluctuation range of K, the position of the generating point and the initial mining radius R are adjusted iteratively i until the theoretical average grade of mixed ore calculated for each mining block is within the fluctuation range of the target ore grade K, and a plurality of divided mining blocks are obtained.

[0030] Target ore grade of mixed ore , wherein, i =a, b, c...; a , b , c ... represent mining points with different ore grades in the mining block, N represents the total number of mining points, represents the ore grade of mining points with different ore grades in the mining block. And the grade is within the fluctuation range of ore grade in mine production (A%~B%), that is A%<K<B%, and the fluctuation range of ore grade is determined according to the mine geological exploration data.

[0031] S104, constructing the optimal transportation network based on the block division result of the target mining area, specifically comprising the following steps: According to the nearest attribution principle of Voronoi polygons, the shortest transportation paths from all mining points in each mining block to the loading point of the block are designed, to ensure that the transportation distance from each mining point in the block to the corresponding loading point is the shortest, which is used as the front-end basic road section of the transportation network.

[0032] Based on the equidistant characteristics of the Thiessen polygon boundary, a balanced shortest access path is designed from the loading points of adjacent blocks to the public transportation road to ensure that the distance from each loading point to the public road is balanced and the path is shortest, avoiding excessively long access paths or congestion for individual loading points, serving as an intermediate connecting segment of the transportation network.

[0033] Based on the topographic conditions of the mining area and the spatial topological relationships in the three-dimensional geological model, and avoiding geologically complex areas and obstacles, the shortest main transportation routes connecting all public transportation roads to the ore dressing plant are planned to ensure high traffic efficiency and the shortest transportation distance, serving as the core backbone of the transportation network.

[0034] A complete transportation network is constructed based on the shortest transportation path, the balanced shortest access path, and the main roads.

[0035] The system calculates the total transport distance of the entire road network, the transport cost and traffic efficiency of each road segment, and iteratively optimizes the direction, width and connection nodes of each road segment with the goal of minimizing total transport cost, maximizing traffic efficiency and eliminating congestion bottlenecks.

[0036] Once optimized, the parameters and connection methods of each segment of the entire transportation network are solidified, forming an optimal transportation network that can directly guide on-site transportation.

[0037] In practical applications, within each mining block, ore mined from mining points of different grades is transported to loading points according to the optimal transportation network. After being mixed in a preset ratio, a mixed ore flow of grade K is obtained and then output to the ore warehouse to ensure stable output grade.

[0038] Within each mining block divided by the Thiessen polygon, there are multiple mining points with different ore grades. Based on the characteristics of the first and second points of the Thiessen polygon, the distance from the mining point to the loading point within the mining block is the shortest. This allows the ore mined from mining points with different ore grades to be transported to the loading point via the optimal path. Then, at the loading point, the ore is mixed according to a preset ratio to obtain a mixed ore flow rate with a grade of K, thus achieving the shortest path transportation of ore within each mining block.

[0039] According to the third point property of the Thiessen polygon, the path length for transporting ore from any two adjacent loading points to the transport road is equal. This means that, overall, the mixed ore achieves the shortest and optimal path from the loading point to the transport road, converging onto the main road, and then being transported together to the ore warehouse and concentrator via the main road. Figure 5 , Figure 6 As shown.

[0040] The transportation cost after dividing the mining area using the Tyson polygon is calculated as follows: ; ; In the formula: This represents the total cost consumed. This indicates the price per liter of fuel. This indicates the fuel consumption per kilometer of the transport vehicle. Indicates the number of transport vehicles. Indicates the total length of the transportation route. This represents the transportation distance from the loading point of the i-th mining block to the ore warehouse.

[0041] Thus, this embodiment of the invention optimizes the transportation routes for ores of different grades from the mining point to the loading point, and from the loading point to the transportation route. The ore grade transported to the warehouse and concentrator through the transportation system remains within an acceptable fluctuation range K, exhibiting minimal grade fluctuation and achieving a steady-state output of the ore flow, thereby significantly reducing blending costs. Furthermore, by optimizing the ore transportation route, transportation costs are controlled to a minimum.

[0042] Furthermore, after the mixed ore is transported from the mining area to the warehouse, the following two transportation schemes are implemented: Option 1: When the input ore flow rate greater than the output ore flow rate ,Right now At that time, a portion of the ore is stored in the ore warehouse, and the remainder is transported to the concentrator through the ore flow output system, as shown in the following formula: ; In the formula: This indicates the quality of ore transported from the warehouse to the concentrator. This indicates the quality of ore transported from the mining area to the ore warehouse. This indicates the quality of the ore stored in the ore warehouse.

[0043] Option 2: When the input ore flow rate is less than the output ore flow rate, i.e. At that time, a portion of the ore is taken out from the ore warehouse and transported to the concentrator along with the input ore through the ore flow output system, as shown in the following formula: ; In the formula: This indicates the quality of ore transported from the warehouse to the concentrator. This indicates the quality of ore transported from the mining area to the ore warehouse. This indicates the quality of the ore taken from the ore warehouse.

[0044] By establishing an ore mining and transportation operation mechanism through the above transportation scheme, a continuous and steady-state ore flow output was achieved.

[0045] This invention relies on precise grade data from a three-dimensional geological model, combined with Thiessen polygon zoning, to achieve stable ore grades through homogenized ore blending design in each block. This eliminates the need for additional large-scale blending facilities, reducing blending costs and operational complexity, and avoiding production risks caused by grade fluctuations. By combining the operating radius of mining equipment and transportation scheduling parameters to set the initial radius, along with Thiessen polygon zoning, loading points and transportation paths are precisely matched, avoiding detours, improving transportation efficiency, and reducing operating costs. Simultaneously, through iterative adjustments to block division, it ensures that the ore in each mining block can be stably blended to meet standards, forming a continuous and stable ore supply flow, guaranteeing stable feed to the concentrator, improving equipment utilization, and reducing production fluctuations.

[0046] The above describes a design method and system for continuous steady-state ore flow mining in open-pit mines, provided by one or more embodiments of this specification. Based on the same approach, this specification also provides a corresponding continuous steady-state ore flow mining output system, such as... Figure 7 As shown, the system includes: a mining system, an ore warehouse, and a ore processing plant.

[0047] The mining system is constructed based on the above-mentioned design method for continuous steady-state ore flow mining in open-pit mines. It is used to stably mine mixed ore with a grade of K within the target area of ​​the mine and output it to the ore warehouse.

[0048] The ore warehouse is equipped with a flow monitoring system and a flow control system. The flow monitoring system is used to monitor and compare the real-time ore flow into and out of the ore warehouse. The flow control system is used to output an ore flow control scheme based on the feedback from the flow monitoring system. The ore warehouse determines the inflow and outflow direction and quantity of ore based on the ore flow control scheme.

[0049] In addition, a predetermined quantity of ore is stored in the ore warehouse, and an ore flow output system is established from the ore warehouse to the concentrator. The continuous ore flow rate from the ore warehouse to the concentrator is set according to the actual production needs of the mine, and the data is fed back to the ore warehouse for the formulation of an ore flow control plan.

[0050] The ore flow control scheme specifically includes: Option 1: When the input ore flow rate greater than the output ore flow rate ,Right now At that time, a portion of the ore is stored in the ore warehouse, and the remainder is transported to the concentrator through the ore flow output system, as shown in the following formula: ; Option 2: When the input ore flow rate is less than the output ore flow rate, i.e. At that time, a portion of the ore is taken out from the ore warehouse and transported to the concentrator along with the input ore through the ore flow output system, as shown in the following formula: ; Based on the above transportation scheme, an operation mechanism for the ore mining and transportation system is established, enabling the ore flow mining and output system of this embodiment to achieve continuous steady-state ore flow output.

[0051] based on Figure 7 The continuous steady-state ore flow mining output system shown in this invention relies on a three-dimensional geological model to accurately represent the spatial grade distribution data of the ore body. It constructs Thiessen polygon mining units with the loading point as the core, thus resolving the grade fluctuation problem at its root. Traditional geometric and sequential zoning ignores the spatial heterogeneity of ore body grades, easily leading to concentrated distributions of high and low grade ore, which can only be remedied by large-scale blending facilities at the back end, increasing the input and maintenance difficulty of ore blending. This method first delineates a circular mining area with the loading point, then sets the loading point as the Thiessen polygon generation point, iteratively optimizing the point location and mining radius R. i By utilizing the spatial characteristics of Tyson polygons, which cover the entire area and minimize the distance between the mining point and the loading point within a unit, high-, low-, and medium-grade ore bodies within the region are uniformly grouped into the same polygonal block. Through proportional pre-mixing of the ore within the block, the average grade of each block is stably aligned with the target grade K.

[0052] This zoning model achieves homogenization of ore grade at the front end of mining, eliminating the need for large-scale back-end ore blending sites and frequent ore blending processes, significantly reducing investment in supporting facilities and ore blending operation costs. Simultaneously, the inherent shortest spatial distance attribute of the Tyson polygon ensures optimal routes from mining points to loading points and from loading points to main transportation roads within each block, shortening transportation distances and reducing fuel and vehicle wear and tear costs. The ore grade produced from each block is uniform and controllable, eliminating grade imbalances at the spatial level. Ore grade fluctuations are minimal across different time periods, continuously supplying a stable ore flow to the concentrator, reducing frequent start-ups and shutdowns of concentrator equipment, and improving equipment utilization, overall production continuity, and economic efficiency.

[0053] Based on the same inventive concept, this invention also proposes a design system for continuous steady-state ore flow mining in open-pit mines, comprising: The model building module is used to build a three-dimensional geological model of the mine based on the geological exploration data of the target mine. The initial parameter setting module is used to set multiple ore loading points within the target mining area of ​​the 3D geological model of the mine. The mining range of each ore loading point is a circle centered on the loading point, with an area of ​​R. i Let i be the circle with the initial mining radius; where i is the number of ore loading points.

[0054] The mining block division module is used to iteratively adjust the position of each ore loading point and the corresponding initial mining radius R within the target mining area, based on the Thiessen polygon principle, using each ore loading point as the occurrence point of a Thiessen polygon. iThe process continues until the average grade of the ore in the Thiessen polygon mining blocks generated by each occurrence point reaches the target ore grade K after mixing. The occurrence point of the iteratively adjusted Thiessen polygon is taken as the final ore loading point, and the range of the Thiessen polygon is taken as the final mining range, resulting in multiple mining blocks.

[0055] Each module in the aforementioned continuous steady-state ore flow mining design system for open-pit mines can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0056] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the computer program to implement the steps in the embodiment of the continuous steady-state ore flow mining design method for open-pit mines. Specific implementation methods can be found in the method embodiments, and will not be repeated here.

[0057] Furthermore, the present invention also provides a non-transitory computer-readable storage medium containing instructions, on which a computer program is stored. When executed by a processor, this computer program is able to implement the steps in the embodiments of the continuous steady-state ore flow mining design method for open-pit mines. Specific implementation methods can be found in the method embodiments, and will not be repeated here.

[0058] Those skilled in the art will understand that embodiments of the present invention can provide methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0059] If the integrated unit module is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a storage device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks.

[0060] It should be noted that the specific embodiments described above enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. Therefore, although the present invention has been described in detail in this specification and embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention are covered within the protection scope of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Any simple variations or equivalent substitutions of technical solutions that can be readily obtained by those skilled in the art within the scope of the technology disclosed in the present invention are within the protection scope of the present invention.

Claims

1. A design method for continuous steady-state ore flow mining in open-pit mines, characterized in that, Includes the following steps: Construct a three-dimensional geological model of the mine based on geological exploration data of the target mine; Multiple ore loading points are set within the target mining area of ​​the three-dimensional geological model of the mine. The mining range of each ore loading point is defined by a circle centered at the loading point, with radius R. i Let i be the circle with the initial mining radius; where i is the number of ore loading points. Taking each ore loading point as the occurrence point of the Thiessen polygon, within the target mining area, the position of the occurrence point and the corresponding initial mining radius R are iteratively adjusted based on the Thiessen polygon principle. i Until the average grade of the ore in the Thiessen polygon mining blocks generated from each point of origin reaches the target ore grade K after mixing; The occurrence point of the iteratively adjusted Thiessen polygon is taken as the final ore loading point, and the range of the Thiessen polygon is taken as the final mining range, resulting in multiple mining blocks.

2. The open-pit mine continuous steady-state ore flow mining design method as described in claim 1, characterized in that, The target ore grade K has a fluctuation range, A%<K<B%, where both A and B are positive integers; the position of the generating point and the initial mining radius R corresponding to the generating point are iteratively adjusted based on the Voronoi polygon principle i until the average grade of the ore after blending in each Voronoi polygon mining block generated by each generating point reaches the target ore grade K, which is specifically: Based on the spatial grade data of ore already assigned in the three-dimensional geological model of the mine, grade statistics and weighted average calculations are performed on the ore within the mining area corresponding to each occurrence point to obtain the theoretical average grade of the ore within the mining area corresponding to each occurrence point. The theoretical average grade is compared with the target ore grade K. When the theoretical average grade is not within the fluctuation range of K, the location of the occurrence point and the initial mining radius R are iteratively adjusted. i The size is determined until the theoretical average grade of the mixed ore in each mining block is within the fluctuation range of the target ore grade K, thus resulting in multiple mining blocks.

3. The open-pit mine continuous steady-state ore flow mining design method as described in claim 2, characterized in that, Based on the ore grade distribution characteristics at various points within the ore body reconstructed by the three-dimensional geological model, the process requirements of the concentrator, and the mine's production capacity, the target ore grade K of the target mine is determined.

4. The open-pit mine continuous steady-state ore flow mining design method as described in claim 3, characterized in that, The target ore grade ,in, i =a, b, c..., a , b , c ...indicates mining points with different ore grades within the mining block. N This indicates the total number of mining sites. This indicates the ore grade at different mining points within a mining block.

5. The open-pit mine continuous steady-state ore flow mining design method as described in claim 2, characterized in that, Based on the equipment parameters for mining and transportation, as well as the geological exploration data and real-time mine grade monitoring data, the location of the occurrence point and the initial mining radius R are adjusted. i Until the Tyson polygon covers the entire target mining area, and the overall ore grade of each mining block is within the fluctuation range of K.

6. The open-pit mine continuous steady-state ore flow mining design method as described in claim 5, characterized in that, The initial mining radius R i The distance should not exceed the maximum operating radius of the mining equipment, and should not exceed the transport distance that maximizes the efficiency and minimizes the cost of transporting vehicles within the service area of ​​the loading point.

7. The open-pit mine continuous steady-state ore flow mining design method as described in claim 1, characterized in that, It also includes constructing the optimal transportation network based on the block division results of the target mining area, specifically including the following steps: With the goal of minimizing the transportation distance from the mining point to the loading point of its respective block, determine the shortest transportation path from all mining points within each mining block to the loading point of that block; With the goal of maximizing transportation efficiency and optimizing road conditions, determine the balanced shortest access path from the loading point of adjacent blocks to the public transportation road; Based on the topography and spatial topology of the mining area, plan the shortest main transportation routes from each loading point to the concentrator. A complete transportation network is constructed based on the shortest transportation path, the balanced shortest access path, and the main roads. With the goal of minimizing transportation costs, the optimal transportation network is obtained by iteratively optimizing the route and layout of the transportation network.

8. A design system for continuous steady-state ore flow mining in open-pit mines, characterized in that, include: The model building module is used to build a three-dimensional geological model of the mine based on the geological exploration data of the target mine. The initial parameter setting module is used to set multiple ore loading points within the target mining area of ​​the 3D geological model of the mine. The mining range of each ore loading point is a circle centered on the loading point, with an area of ​​R. i Let i be the circle with the initial mining radius; where i is the number of ore loading points. The mining block division module is used to iteratively adjust the position of each ore loading point and the corresponding initial mining radius R within the target mining area, based on the Thiessen polygon principle, using each ore loading point as the occurrence point of a Thiessen polygon. i Until the average grade of the ore in the Thiessen polygon mining blocks generated from each point of origin reaches the target ore grade K after mixing; The occurrence point of the iteratively adjusted Thiessen polygon is taken as the final ore loading point, and the range of the Thiessen polygon is taken as the final mining range, resulting in multiple mining blocks.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is loaded by the processor, it is able to perform the steps of the method according to any one of claims 1 to 7.

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