A method and system for rapid delineation of a production boundary using parametric dynamic design

Abstract

The application discloses a kind of quick delineation method and system of mining boundary using parameterized dynamic design.The method comprises the following steps: drawing initial bench line;Determine the mining design parameters, generate open-pit mining bench line and road line;Based on mining design, generate model and dynamic report;According to medium and long term, short-term plan target and dynamic report result, decide whether to adjust optimization, if yes, open-pit bench line and road line local automatic batch adjustment and dynamic update, if not, generate open-pit mining design final drawing, complete the quick delineation of mining boundary.The application also provides a system for implementing the method.The method of the application realizes parameterized dynamic design, bench and road design line batch automatic generation and adjustment, automatic generation of DTM and quick report, automatic linkage update after dynamic adjustment, to quickly meet the plan target, form mining design optimization scheme, realizes efficient, accurate and quick delineation of mining boundary.

Description

Technical Field

[0001] The present invention belongs to the technical field of mining boundary delineation, and in particular relates to a method and system for quickly delineating mining boundaries using parameterized dynamic design. Background Art

[0002] With the continuous advancement of computer hardware and software technology and the gradual maturity of 3D mining software, the traditional mining design model has been broken, and 3D parametric design has become the mainstream of current mine design. 3D parametric mining design eliminates most of the manual work required for design based on CAD and 3D mining software. This approach applies geological principles to boundary optimization and staged design based on open-pit mine visualization, extending traditional CAD 2D design to 3D parametric design. Compared to traditional design, which relies on the experience of mine designers to determine design parameters, it is easier and faster to achieve optimal design results.

[0003] Nowadays, 3D mining software, based on value block models and using supporting parameters and surface conditions as geometric constraints, aims to maximize economic value in mining (boundary optimization). Based on the capabilities of existing domestic and international mining software, boundary optimization is based on a long-term, full-lifecycle, and phased approach. Current 3D mining software (3DMine, Dimine, Surpac, Micromine, Datamine) does not implement parametric dynamic design (rapid boundary definition) based on medium- to long-term or short-term plans. However, in actual mine production, to meet production capacity and related indicators, local design optimization is required annually, and sometimes monthly plan adjustments are also required. This requires repeated adjustments to parameter configurations, bench design, road design, and calculation of mining and stripping quantities, which consumes a significant amount of manpower and time.

[0004] Therefore, there is an urgent need for a method that can achieve rapid delineation of mining boundaries based on parametric dynamic design of medium-, long- and short-term plans. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a method for rapid delineation of mining boundaries using parametric dynamic design, to realize parametric dynamic design, automatic batch generation and adjustment of step and road design lines, automatic generation of DTM and rapid quantity reporting, and automatic linkage update after dynamic adjustment, so as to quickly meet medium- and long-term and short-term planning goals, form a mining design optimization plan, rapid dynamic quantity reporting, and rapid drawing production, and ultimately achieve more scientific, efficient, and accurate rapid delineation of mining boundaries.

[0006] A second object of the present invention is to provide a system for realizing the method for rapidly delineating mining boundaries using parametric dynamic design.

[0007] The present invention provides a method for quickly delineating mining boundaries using parameterized dynamic design, comprising the following steps:

[0008] S1. Extract the existing open pit mining bench lines and terrain contour lines from the existing open pit mine map;

[0009] S2. Draw the initial bench lines based on the planned objectives. Determine the mining design parameters based on the technical conditions for open-pit mining of the ore body. Use the "Open-pit Mine Design" function group to design the open-pit mining bench lines and road lines.

[0010] S3. First, construct a current model of the open pit using the Delaunay algorithm based on the terrain data. Then, construct a final model of the open pit using the constrained Delaunay triangulation algorithm.

[0011] S4. Based on the final boundary model of the open pit obtained in step S3 and the current status model of the open pit, combined with the mining design boundary, the ore information of the enclosed area is delineated by the constraint calculation, and the planned automatic reporting volume is obtained;

[0012] S5 automatically reported according to the plan obtained in step S4, determine whether the preset plan goals are met, and obtain the judgment result;

[0013] S6. Based on the judgment result obtained in step S5, if the planned target is not met, the current mining design step lines and road lines are automatically adjusted in batches, and steps S4 to S6 are repeated. If the planned target is met, the current mining design step lines and current status lines are automatically trimmed in batches, and the final open-pit mining design drawing is automatically generated to complete the rapid delineation of the mining boundary.

[0014] In step S1, the current mining status contour line of the mine is obtained, the position of the first step line is determined according to the actual situation of the medium-term or short-term plan target, the line elevation is assigned, and smoothing is performed to draw the initial step line; the two ends of the initial step line need to extend to the upper part of the surface and beyond the surface range.

[0015] Step S1 specifically includes: obtaining an initial step line for open-pit mining;

[0016] According to the actual situation of medium-term or short-term planning goals, set the step height and obtain the step reference line;

[0017] According to the step reference line, select the bottom layer, design the minimum bottom width based on the open air, and draw a polyline around the layered body;

[0018] Perform two smoothing processes on the polyline to obtain the initial step line.

[0019] In step S2, the mining design parameters include expansion parameters and step parameters;

[0020] The expansion parameters include road parameters, expansion direction, and buffer section information; the road parameters include road width, road slope, road direction, and slope mode; the expansion direction includes inward contraction and outward expansion; the buffer section information includes buffer section distance and buffer mode; the road direction includes clockwise and counterclockwise; the slope mode includes three modes: center line, inner boundary, and outer boundary;

[0021] The step parameters include pit parameters, platform parameters and expansion direction; the pit parameters include step height and default slope angle; the platform parameters include platform width, platform gradient and whether there is a road exit expansion; the expansion direction includes upward expansion and downward expansion.

[0022] Step S2 is specifically as follows:

[0023] Collect terrain point cloud data and use DIMINE's existing functions to generate terrain models;

[0024] Based on geological exploration data, DIMINE's existing functions are used to interpret profiles and perform 3D modeling to generate ore body boundary models;

[0025] Using the mining design parameters obtained in step S1 as constraints, the terrain model and the ore body boundary model are cut in layers to generate initial step contour lines, and the slope angle is adjusted according to the ore body stability and equipment requirements;

[0026] Based on the initial step contour and slope angle, the step platform is generated with the platform width and transportation safety requirements as constraints;

[0027] Based on transportation needs, the starting and ending points of roads are planned on the terrain model, and the shortest path is generated using the Dijkstra algorithm. The road slope is constrained to ensure it does not exceed the climbing capacity of the transport equipment. The location and curvature of curves in the road are adjusted, and the curve radius is set according to the wheelbase and speed of the transport equipment.

[0028] Check the spatial topological relationship between the obtained steps and the road to ensure that there are no intersections or overhangs, and calculate the fill and cut volumes using the terrain model and ore body boundary model. If there are intersections or overhangs, regenerate the road based on the start and end points of the road on the terrain model.

[0029] Finally, the open-pit mining design step lines and road lines are obtained.

[0030] In step S3, based on the step lines and road lines created in step S2, the final boundary model of the open pit is constructed; based on the existing top and bottom slope lines of the existing mine, combined with the existing contour line data, the current status model of the open pit is constructed; the two models are operated by Boolean operations, specifically: based on the obtained model, the open pit mining model is generated by Boolean operations.

[0031] The core idea of ​​the Delaunay triangulation algorithm is to construct a triangulated network from a set of discrete points on a plane, so that the circumscribed circle of any triangle in the triangulated network does not contain any other points. The model constructed based on the Delaunay triangulation algorithm is as follows:

[0032] Suppose there are i discrete points on the plane , where i = 1, 2, …, n;

[0033] When constructing a triangle, for any three points 、 、 , calculate the center of the triangle's circumcircle and radius R; where the equation of the circumscribed circle O is expressed as follows: ;

[0034] For other points , to determine whether it is in the triangle In the circumcircle of and The size relationship of , then point The points that are not within the circumcircle satisfy the Delaunay triangulation condition. By continuously selecting points that meet the conditions, multiple triangular faces are created, and the entire triangulated network is constructed from the triangular faces. The entire triangulated network constitutes the current model of the open pit.

[0035] In step S4, based on the final boundary model of the open-pit mine obtained in step S3 and the current status model of the open-pit mine, combined with the mining design boundary, the Boolean operation and hexahedron function are used to calculate the ore volume in the mining area and the mining volume; then, based on the ore grade information in the geological database and the open-pit mining model, the weighted average algorithm is used to calculate and obtain the average ore grade; through the open-pit mining model, the volume within the mining boundary is subtracted from the ore body part to obtain the volume of the stripping area and calculate the rock stripping volume; based on the rock stripping volume and the mining volume, the stripping ratio is calculated; the above-mentioned calculation results are used to generate a report according to the preset report template to obtain the planned automatic report volume.

[0036] The mining volume calculation is specifically as follows: first, based on the open-pit mining model and the current status model of the open-pit stope, the volume of the mining area is calculated using the integration concept according to the mining boundary; the integration concept is: the open-pit mining area is regarded as consisting of a number of independent ore body mining area elements. For mining area elements with simple geometric shapes, the corresponding volume formula is directly used for calculation. For mining area elements with complex shapes, they are divided into multiple cubic units, and calculations are then performed for each cubic unit and accumulated; after the mining area volume is obtained, it is multiplied by the ore density to obtain the mining volume;

[0037] The average grade of the ore is calculated using a weighted average algorithm. Specifically, suppose there are i ore blocks of different grades in the mining area, and the grade of each block is , the volume is .

[0038] The average ore grade C is calculated using the following formula: ;

[0039] The average grade of the ore in the entire mining area is obtained by weighted averaging the grade of each block according to its volume.

[0040] The rock stripping amount calculation is specifically as follows: based on the open pit mining model and the current model of the open pit stope, according to the mining boundary, the volume of the open pit mine stripping area is calculated using the integral concept; and then the rock stripping amount is calculated based on the volume of the open pit mine stripping area and the rock density;

[0041] The stripping ratio is calculated as follows: the stripping ratio R is calculated based on the obtained mining volume and rock stripping volume, using the following formula: ;in, The amount of rock stripping; For mining volume.

[0042] The judgment described in step S5 is specifically: comparing the preset medium-term or short-term plan target with the planned automatic reporting quantity obtained in step S4. When the planned automatic reporting quantity obtained in step S4 is within the range of ±1% of the preset medium-term or short-term plan target, the judgment result is that the plan target is met; otherwise, the judgment result is that the plan target is not met.

[0043] The automatic batch adjustment in step S6 is specifically as follows:

[0044] A three-dimensional model of the ore body, terrain, and road is constructed based on geological exploration data, measurement data, design parameters, and the current step lines and road lines. The mining design parameters obtained in step S1 are used as constraints and combined with the Dijkstra algorithm to optimize the current step lines and road lines.

[0045] Furthermore, when geological data is updated, equipment parameters are adjusted, or production plans are changed, the adjusted data is synchronously updated to the three-dimensional model obtained in step S6, and the step lines and road lines are optimized and adjusted according to the automatic batch adjustment described in step S6 to obtain new step lines and road lines.

[0046] The present invention also provides a system for implementing the method for quickly delineating mining boundaries using parametric dynamic design, comprising an initial step line drawing module, a step line and road line generation module, a model building module, a planned automatic quantity calculation module, a planned target judgment module, and a judgment result execution module;

[0047] The initial step line drawing module obtains the current mining contour lines of the ore body, draws the initial step line based on the planned target, and uploads the data to the step line and road line generation module;

[0048] The step line and road line generation module constructs a terrain model based on the received data, determines the mining design parameters based on the technical conditions of open-pit mining of the ore body, combines the initial step line with the current model of the open-pit mine, obtains the open-pit mining step line and road line, and uploads the data to the model construction module;

[0049] The model building module constructs the current status model of the open pit based on the received data using the Delaunay algorithm. It then constructs the final boundary model of the open pit based on the constrained Delaunay triangulation algorithm. The two models are used to construct the open pit mining model through Boolean operations, and the data is uploaded to the automatic quantity calculation module.

[0050] The planned automatic quantity reporting calculation module determines whether the preset plan target is met based on the received data and the obtained planned automatic quantity reporting, obtains the judgment result, and uploads the data to the judgment result execution module;

[0051] The judgment result execution module will automatically adjust the current mining design step lines and road lines in batches based on the received data and the judgment results. If the planned goals are not met, the module will then return the data to the model construction module. If the planned goals are met, the current mining design step lines and status lines will be automatically trimmed in batches, and the final open-pit mining design drawing will be automatically generated to quickly delineate the mining boundaries and quickly produce the drawing.

[0052] The present invention discloses a method and system for quickly delineating mining boundaries using parametric dynamic design, which solves the technical difficulties of being unable to quickly delineate mining boundaries and the difficulty in dynamically adjusting and optimizing medium-, long-, and short-term plans. It realizes parametric dynamic design, automatic batch generation and adjustment of step and road design lines, automatic generation of DTMs and rapid reporting of quantities, and automatic linkage updates after dynamic adjustment, so as to quickly meet medium-, long-, and short-term plan goals, form a mining design optimization plan, quickly report quantities dynamically, and quickly produce drawings, thereby realizing scientific, efficient, and accurate rapid delineation of mining boundaries. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 Schematic diagram of the process of the present invention;

[0054] Figure 2 Schematic diagram of the structure of the system of the present invention;

[0055] Figure 3 A plan view of the existing open-air surface provided in an embodiment of the present invention;

[0056] Figure 4 To design the floor plan of the open-air final realm;

[0057] Figure 5 The current status model of the open pit in the embodiment of the present invention;

[0058] Figure 6 This is the final state model of the open pit in the embodiment of the present invention;

[0059] Figure 7 This is a schematic diagram of dynamic quantity reporting in an embodiment of the present invention;

[0060] Figure 8 This is a schematic diagram showing the comparison before and after the automatic batch adjustment of step lines in an embodiment of the present invention; wherein, Figure 8 A is a schematic diagram before automatic batch adjustment of step lines in an embodiment of the present invention; Figure 8 B is a schematic diagram of the automatic batch adjustment of step lines in an embodiment of the present invention;

[0061] Figure 9 This is a schematic diagram showing the comparison before and after the automatic batch adjustment of road lines in an embodiment of the present invention; wherein: Figure 9 A is a schematic diagram before automatic batch adjustment of road lines in an embodiment of the present invention; Figure 9 B is a schematic diagram of the automatic batch adjustment of road lines in an embodiment of the present invention;

[0062] Figure 10 This is a schematic diagram of the effect of the final open-pit mining design drawing generated in an embodiment of the present invention;

[0063] Figure 11 This is the final boundary plan of the open-pit mining design finally generated in the embodiment of the present invention. DETAILED DESCRIPTION

[0064] The present invention provides a method for quickly delineating mining boundaries using parameterized dynamic design, the flow diagram of which is shown in FIG. Figure 1 As shown, the following steps are included:

[0065] S1. Obtain the current bench lines and terrain contours of the open-pit mining area;

[0066] Step S1 specifically comprises: obtaining the current step lines and terrain contour lines of the open-pit mining of the mine from the existing open-pit mining current plan of the mine;

[0067] S2. Set the step height based on the actual mid- to long-term and short-term plan goals and obtain the step reference line;

[0068] According to the step reference line, select the bottom layer, design the minimum bottom width based on the open air, and draw a polyline around the layered body;

[0069] Perform two smoothing processes on the polyline to obtain the initial step line.

[0070] Based on the technical conditions of open-pit mining of the ore body, the mining design parameters are determined. Then, based on the initial step line, the open-pit mining step line and road line are created using the "Open-pit Mine Design" function group.

[0071] In step S2, the mining design parameters include expansion parameters and step parameters;

[0072] The expansion parameters include road parameters, expansion direction, and buffer section information; the road parameters include road width, road slope, road direction, and slope mode; the expansion direction includes inward contraction and outward expansion; the buffer section information includes buffer section distance and buffer mode; the road direction includes clockwise and counterclockwise; the slope mode includes three modes: center line, inner boundary, and outer boundary;

[0073] The step parameters include pit parameters, platform parameters and expansion direction; the pit parameters include step height and default slope angle; the platform parameters include platform width, platform gradient and whether there is a road exit expansion; the expansion direction includes upward expansion and downward expansion.

[0074] Step S2 is specifically as follows:

[0075] Collect terrain point cloud data and use DIMINE's existing functions to generate terrain models;

[0076] Based on geological exploration data, DIMINE's existing functions are used to interpret profiles and perform 3D modeling to generate ore body boundary models;

[0077] Taking mining design parameters as constraints, the terrain model and ore body boundary model are cut in layers to generate initial step contours, and the slope angle is adjusted according to the ore body stability and equipment requirements;

[0078] Based on the initial step contour and slope angle, the step platform is generated with the platform width and transportation safety requirements as constraints, and the invalid area in the ore body is removed through Boolean operations;

[0079] Based on transportation needs, the starting and ending points of roads are planned on the terrain model, and the shortest path is generated using the Dijkstra algorithm. The road slope is constrained to ensure it does not exceed the climbing capacity of the transport equipment. The location and curvature of curves in the road are adjusted, and the curve radius is set according to the wheelbase and speed of the transport equipment.

[0080] Check the spatial topological relationship between the obtained steps and the road to ensure that there are no intersections or overhangs, and calculate the fill and cut volumes using the terrain model and ore body boundary model. If there are intersections or overhangs, regenerate the road based on the start and end points of the road on the terrain model.

[0081] Finally, the open-pit mining step lines and road lines are obtained.

[0082] S3. First, construct a current model of the open pit using the Delaunay algorithm based on the terrain data. Then, construct a final model of the open pit using the constrained Delaunay triangulation algorithm.

[0083] In step S3, based on the step lines and road lines created in step S2, the final boundary model of the open-pit mine is constructed; based on the existing current slope top line and slope bottom line of the existing mine, combined with the acquired terrain contour line data, the current status model of the open-pit mine is constructed; the two models are connected through Boolean operations, specifically: based on the obtained model, the open-pit mining model is generated through Boolean operations.

[0084] The core idea of ​​the Delaunay triangulation algorithm is to construct a triangulated network from a set of discrete points on a plane, so that the circumscribed circle of any triangle in the triangulated network does not contain any other points. The model constructed based on the Delaunay triangulation algorithm is as follows:

[0085] Suppose there are i discrete points on the plane , where i = 1, 2, …, n;

[0086] When constructing a triangle, for any three points 、 、 , calculate the center of the triangle's circumcircle and radius R; where the equation of the circumscribed circle O is expressed as follows: ;

[0087] For other points , to determine whether it is in the triangle In the circumcircle of and The size relationship of , then point The points that are not within the circumcircle satisfy the Delaunay triangulation condition. By continuously selecting points that meet the conditions, multiple triangular faces are created, and the entire triangulated network is constructed from the triangular faces. The entire triangulated network constitutes the current model of the open pit.

[0088] S4. Based on the final boundary model of the open pit obtained in step S3 and the current status model of the open pit, combined with the mining design boundary, the ore information of the enclosed area is delineated by the constraint calculation, and the planned automatic reporting volume is obtained;

[0089] In step S4, based on the final boundary model of the open-pit mine and the current status model of the open-pit mine obtained in step S3, combined with the mining design boundary, the Boolean operation and hexahedron function are used to calculate the ore volume in the mining area and the mining volume; then, based on the ore grade information in the geological database and the open-pit mining model, a weighted average algorithm is used to calculate and obtain the average ore grade; through the open-pit mining model, the volume within the mining boundary is subtracted from the ore body part to obtain the volume of the stripping area and calculate the rock stripping volume; based on the rock stripping volume and the mining volume, the stripping ratio is calculated; the above-obtained calculation results are used to generate a report according to the preset report template, and the planning cycle is selected in the software to obtain the planned automatic reporting volume.

[0090] The mining volume calculation is specifically as follows: first, based on the open-pit mining model and the current status model of the open-pit stope, the volume of the mining area is calculated using the integration concept according to the mining boundary; the integration concept is: the open-pit mining area is regarded as consisting of a number of independent ore body mining area elements. For mining area elements with simple geometric shapes, the corresponding volume formula is directly used for calculation. For mining area elements with complex shapes, they are divided into multiple cubic units, and then calculations are performed for each cubic unit and accumulated; after the mining area volume is obtained, it is multiplied by the ore density to obtain the mining volume;

[0091] The average grade of the ore is calculated using a weighted average algorithm. Specifically, suppose there are i ore blocks of different grades in the mining area, and the grade of each block is , the volume is .

[0092] The average ore grade C is calculated using the following formula: ;

[0093] The average grade of the ore in the entire mining area is obtained by weighted averaging the grade of each block according to its volume.

[0094] The rock stripping amount calculation is specifically as follows: based on the open pit mining model and the current model of the open pit stope, according to the mining boundary, the volume of the open pit mine stripping area is calculated using the integral concept; and then the rock stripping amount is calculated based on the volume of the open pit mine stripping area and the rock density;

[0095] The stripping ratio is calculated as follows: the stripping ratio R is calculated based on the obtained mining volume and rock stripping volume, using the following formula: ;in, The amount of rock stripping; For mining volume.

[0096] S5 automatically reported according to the plan obtained in step S4, determine whether the preset plan goals are met, and obtain the judgment result;

[0097] The judgment described in step S5 is specifically: comparing the preset medium-term or short-term plan target with the planned automatic reporting quantity obtained in step S4. When the planned automatic reporting quantity obtained in step S4 is within the range of ±1% of the preset medium-term or short-term plan target, the judgment result is that the plan target is met; otherwise, the judgment result is that the plan target is not met.

[0098] S6. Based on the judgment result obtained in step S5, if the planned target is not met, the current mining design step lines and road lines are automatically adjusted in batches, and steps S4 to S6 are repeated. If the planned target is met, the current mining design step lines and current status lines are automatically trimmed in batches, and the final open-pit mining design drawing is automatically generated to complete the rapid delineation of the mining boundary.

[0099] The automatic batch adjustment in step S6 is specifically as follows:

[0100] A three-dimensional model of the ore body, terrain, and road is constructed based on geological exploration data, measurement data, design parameters, and the current step lines and road lines. The mining design parameters obtained in step S1 are used as constraints and combined with the Dijkstra algorithm to optimize the current step lines and road lines.

[0101] Furthermore, when geological data is updated, equipment parameters are adjusted, or production plans are changed, the adjusted data is synchronously updated to the three-dimensional model obtained in step S6, and the step lines and road lines are optimized and adjusted according to the automatic batch adjustment described in step S6 to obtain new step lines and road lines.

[0102] The present invention also provides a system for realizing the method of rapid delineation of mining boundaries using parameterized dynamic design, the result of which is shown in the schematic diagram. Figure 2 As shown, it includes an initial step line drawing module, a step line and road line generation module, a model building module, a plan automatic reporting and calculation module, a plan target judgment module, and a judgment result execution module;

[0103] The initial step line drawing module obtains the current mining contour lines of the ore body, draws the initial step line based on the planned target, and uploads the data to the step line and road line generation module;

[0104] The step line and road line generation module constructs a terrain model based on the received data, determines the mining design parameters based on the technical conditions of open-pit mining of the ore body, and then combines the initial step line with the terrain model to obtain the open-pit mining step line and road line, and uploads the data to the model construction module;

[0105] The model building module constructs the current status model of the open pit based on the received data using the Delaunay algorithm. It then constructs the final boundary model of the open pit based on the constrained Delaunay triangulation algorithm. The two models are used to construct the open pit mining model through Boolean operations, and the data is uploaded to the automatic quantity calculation module.

[0106] The planned automatic quantity reporting calculation module determines whether the preset plan target is met based on the received data and the obtained planned automatic quantity reporting, obtains the judgment result, and uploads the data to the judgment result execution module;

[0107] The judgment result execution module will automatically adjust the current mining design step lines and road lines in batches based on the received data and the judgment results. If the planned goals are not met, the module will then return the data to the model construction module. If the planned goals are met, the current mining design step lines and status lines will be automatically trimmed in batches, and the final open-pit mining design drawing will be automatically generated to quickly delineate the mining boundaries and quickly produce the drawing.

[0108] The method of the present invention is further described below with reference to an embodiment:

[0109] Collect terrain point cloud data and use the existing functions of DIMINE to generate a terrain model; use the mining design parameters obtained in step S2 as constraints, cut the terrain model and the ore body boundary model in layers, generate the initial step contour line, and adjust the slope angle according to the ore body stability and equipment requirements; generate a step platform based on the initial step contour line and slope angle, with the platform width and transportation safety requirements as constraints; plan the starting and ending points of the road on the terrain model based on transportation needs, and use the Dijkstra algorithm to generate the shortest path; constrain the road slope so that it does not exceed the climbing ability of the transportation equipment; adjust the position and curvature of the curve in the road, and set the curve radius according to the wheelbase and speed of the transportation equipment; check the spatial topological relationship between the obtained steps and the road to ensure that there is no intersection or overhang, and calculate the fill and cut volume through the terrain model and the ore body boundary model; if there is an intersection or overhang, regenerate the road based on the starting and ending points of the road on the terrain model; finally, obtain the open-pit mining step line and road line, such as Figure 4 shown.

[0110] Based on the terrain data, the Delaunay triangulation algorithm is used to construct the current model of the open pit, such as Figure 5 As shown;

[0111] According to the final boundary model of the open pit obtained in step S3 and the current status model of the open pit; combined with the mining design boundary, using Boolean operations and hexahedron functions, calculate the ore volume of the mining area and calculate the mining volume; then based on the ore grade information in the geological database and the open pit mining model, use the weighted average algorithm to calculate and obtain the average ore grade; through the open pit mining model, use the volume within the mining boundary minus the ore body part to obtain the volume of the stripping area and calculate the rock stripping volume; calculate the stripping ratio based on the rock stripping volume and the mining volume; generate a report according to the preset report template using the above calculation results to obtain the planned automatic report volume, such as Figure 6 shown.

[0112] According to the obtained plan, the quantity is automatically reported to determine whether the preset plan target is met and the judgment result is obtained; if the plan target is not met, the current mining design step line and road line are automatically adjusted in batches, such as Figure 7 、 Figure 8 If the planned target is met, the current mining design step line and the current status line will be automatically trimmed in batches to automatically generate the final open-pit mining design drawing, as shown in the figure below. Figure 9 As shown, the final plan of open pit mining design will be automatically generated and output as the final boundary plan of open pit mining design, as shown Figure 10 As shown, the mining boundary is quickly delineated.

Claims

1. A method for quickly defining mining boundaries using parametric dynamic design, characterized in that: The following steps are involved: S1. Extract the existing open pit mining step lines and terrain contours from the existing open pit mine map; S2. Draw the initial bench lines based on the planned objectives. Determine the mining design parameters based on the technical conditions for open-pit mining of the ore body. Use the "Open-pit Mine Design" function group to design the open-pit mining bench lines and road lines. S3. First, construct the current model of the open pit using the Delaunay algorithm based on the terrain data. Then, construct the final boundary model of the open pit using the constrained Delaunay triangulation algorithm. S4. Based on the final boundary model of the open pit obtained in step S3 and the current status model of the open pit, combined with the mining design boundary, the ore information of the enclosed area is delineated by the constraint calculation, and the planned automatic reporting volume is obtained; S5 automatically reported according to the plan obtained in step S4, determine whether the preset plan goals are met, and obtain the judgment result; S6. If the result of step S5 does not meet the planned objectives, the current mining design step lines and road lines are automatically adjusted in batches, and steps S4-S6 are repeated. If the planned objectives are met, the current mining design step lines and existing lines are automatically trimmed in batches to automatically generate a final open-pit mining design map, completing the rapid delineation of the mining boundary. In step S3, the final boundary model of the open pit is constructed based on the step lines and road lines created in step S2; the current state model of the open pit is constructed based on the existing top and bottom slope lines of the existing stope, combined with the acquired contour line data; the two models are subjected to Boolean operations, specifically: based on the obtained model, the open pit mining model is generated through Boolean operations; The core idea of ​​the Delaunay triangulation algorithm is to construct a triangulated network from a set of discrete points on a plane, so that the circumscribed circle of any triangle in the triangulated network does not contain any other points. The model constructed based on the Delaunay triangulation algorithm is as follows: Suppose there are i discrete points on the plane , where i = 1, 2, …, n; When constructing a triangle, for any three points 、 、 , calculate the center of the triangle's circumcircle and radius R; where the equation of the circumscribed circle O is expressed as follows: ; For other points , to determine whether it is in the triangle In the circumcircle of and The size relationship of , then point The points that are not within the circumcircle satisfy the Delaunay triangulation condition. By continuously selecting points that meet the condition, multiple triangular faces are created, and the entire triangulated network is constructed from the triangular faces. The entire triangulated network constitutes the current model of the open pit. The automatic batch adjustment in step S6 is specifically as follows: A three-dimensional model of the ore body, terrain, and road is constructed based on geological exploration data, measurement data, design parameters, and the current step lines and road lines. The mining design parameters obtained in step S1 are used as constraints and combined with the Dijkstra algorithm to optimize the current step lines and road lines. When geological data is updated, equipment parameters are adjusted, or production plans are changed, the adjusted data is synchronously updated to the three-dimensional model obtained in step S6, and the step lines and road lines are optimized and adjusted according to the automatic batch adjustment described in step S6 to obtain new step lines and road lines.

2. The method for quickly defining mining boundaries using parametric dynamic design according to claim 1 is characterized in that: In step S1, the current mining status contour line of the mine is obtained, the position of the first step line is determined according to the actual situation of the medium-term or short-term plan target, the line elevation is assigned, and smoothing is performed to draw the initial step line; the two ends of the initial step line need to extend to the upper part of the surface and beyond the surface range.

3. The method for quickly defining mining boundaries using parameterized dynamic design according to claim 2 is characterized in that: Step S1 specifically includes: obtaining an initial step line for open-pit mining; According to the actual situation of medium-term or short-term planning goals, set the step height and obtain the step reference line; According to the step reference line, select the bottom layer, design the minimum bottom width based on the open air, and draw a polyline around the layered body; Perform two smoothing processes on the polyline to obtain the initial step line.

4. The method for quickly defining mining boundaries using parametric dynamic design according to claim 1 is characterized in that: In step S2, the mining design parameters include expansion parameters and step parameters; The expansion parameters include road parameters, expansion direction, and buffer section information; the road parameters include road width, road slope, road direction, and slope mode; the expansion direction includes inward contraction and outward expansion; the buffer section information includes buffer section distance and buffer mode; the road direction includes clockwise and counterclockwise; the slope mode includes three modes: center line, inner boundary, and outer boundary; The step parameters include pit parameters, platform parameters and expansion direction; the pit parameters include step height and default slope angle; the platform parameters include platform width, platform gradient and whether there is a road exit expansion; the expansion direction includes upward expansion and downward expansion.

5. The method for quickly defining mining boundaries using parametric dynamic design according to claim 4 is characterized in that: Step S2 is specifically as follows: Collect terrain point cloud data and use DIMINE's existing functions to generate terrain models; Based on geological exploration data, DIMINE's existing functions are used to interpret profiles and perform 3D modeling to generate ore body boundary models; Using the mining design parameters obtained in step S1 as constraints, the terrain model and the ore body boundary model are cut in layers to generate initial step contour lines, and the slope angle is adjusted according to the ore body stability and equipment requirements; Based on the initial step contour and slope angle, the step platform is generated with the platform width and transportation safety requirements as constraints; Based on transportation needs, the starting and ending points of roads are planned on the terrain model, and the shortest path is generated using the Dijkstra algorithm. The road slope is constrained to ensure it does not exceed the climbing capacity of the transport equipment. The location and curvature of curves in the road are adjusted, and the curve radius is set according to the wheelbase and speed of the transport equipment. Check the spatial topological relationship between the obtained steps and the road to ensure that there are no intersections or overhangs, and calculate the fill and cut volumes using the terrain model and ore body boundary model. If there are intersections or overhangs, regenerate the road based on the start and end points of the road on the terrain model. Finally, the open-pit mining design step lines and road lines are obtained.

6. The method for quickly defining mining boundaries using parametric dynamic design according to claim 1 is characterized in that: In step S4, the volume of ore in the mining area is calculated based on the final boundary model of the open pit obtained in step S3 and the current status model of the open pit, combined with the mining design boundary, using Boolean operations and hexahedron functions to calculate the mining volume; then, based on the ore grade information in the geological database and the open pit mining model, a weighted average algorithm is used to calculate the average ore grade; Using the open-pit mining model, the volume of the stripping area is calculated by subtracting the ore body from the volume within the mining boundary. The stripping volume is then calculated. The stripping ratio is calculated based on the stripping volume and the mining volume. The above calculation results are used to generate a report according to the preset report template to obtain the planned automatic volume report. The mining volume calculation is specifically as follows: first, based on the open-pit mining model and the current status model of the open-pit stope, the volume of the mining area is calculated using the integration concept according to the mining boundary; the integration concept is: the open-pit mining area is regarded as consisting of a number of independent ore body mining area elements. For mining area elements with simple geometric shapes, the corresponding volume formula is directly used for calculation. For mining area elements with complex shapes, they are divided into multiple cubic units, and calculations are then performed for each cubic unit and accumulated; after the mining area volume is obtained, it is multiplied by the ore density to obtain the mining volume; The average grade of the ore is calculated using a weighted average algorithm. Specifically, suppose there are i ore blocks of different grades in the mining area, and the grade of each block is , the volume is ; The average ore grade C is calculated using the following formula: ; The average grade of the ore in the entire mining area is obtained by weighted averaging the grade of each block according to its volume; The rock stripping amount calculation is specifically as follows: based on the open pit mining model and the current model of the open pit stope, according to the mining boundary, the volume of the open pit mine stripping area is calculated using the integral concept; and then the rock stripping amount is calculated based on the volume of the open pit mine stripping area and the rock density; The stripping ratio is calculated as follows: the stripping ratio R is calculated based on the obtained mining volume and rock stripping volume, using the following formula: ;in, The amount of rock stripping; For mining volume.

7. The method for quickly defining mining boundaries using parametric dynamic design according to claim 1 is characterized in that: The judgment described in step S5 is specifically: comparing the preset medium-term or short-term plan target with the planned automatic reporting quantity obtained in step S4. When the planned automatic reporting quantity obtained in step S4 is within the range of ±1% of the preset medium-term or short-term plan target, the judgment result is that the plan target is met; otherwise, the judgment result is that the plan target is not met.

8. A system for implementing the method for rapidly delineating mining boundaries using parameterized dynamic design as described in any one of claims 1 to 7, characterized in that: It includes the initial step line drawing module, step line and road line generation module, model building module, plan automatic reporting and calculation module, plan target judgment module, and judgment result execution module; The initial step line drawing module obtains the current mining contour lines of the ore body, draws the initial step line based on the planned target, and uploads the data to the step line and road line generation module; The step line and road line generation module constructs a terrain model based on the received data, determines the mining design parameters based on the technical conditions of open-pit mining of the ore body, and then combines the initial step line with the terrain model to obtain the open-pit mining step line and road line, and uploads the data to the model construction module; The model building module constructs the current status model of the open pit based on the received data using the Delaunay algorithm. It then constructs the final boundary model of the open pit based on the constrained Delaunay triangulation algorithm. The two models are used to construct the open pit mining model through Boolean operations, and the data is uploaded to the automatic quantity calculation module. The planned automatic quantity reporting calculation module determines whether the preset plan target is met based on the received data and the obtained planned automatic quantity reporting, obtains the judgment result, and uploads the data to the judgment result execution module; The judgment result execution module will automatically adjust the current mining design step lines and road lines in batches based on the received data and the judgment results. If the planned goals are not met, the module will then return the data to the model construction module. If the planned goals are met, the current mining design step lines and status lines will be automatically trimmed in batches, and the final open-pit mining design drawing will be automatically generated to quickly delineate the mining boundaries and quickly produce the drawing.

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