Method for determining the boundary of expanded mining in deep open pit mines
By screening the open-pit mine expansion mining realm plan and combining with the NPV net present value judgment, the problem of deviation of the deep-pit mine expansion mining realm in traditional methods is solved, and the reasonable determination and economic benefits of the deep-pit mine mining realm are achieved. promote.
Patent Information
- Application Number
- CN202010769934.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-04
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2040-08-04
AI Technical Summary
When traditional methods determine the expansion mining realm of deep-concave open-pit mines, they fail to effectively consider the complex mining situation in production, resulting in a large deviation from the data and the actual situation, affecting the interests of mining enterprises.
By screening the open-pit mine expansion mining realm plan, the realm location of expansion and non-pit mine expansion and non-pit mine development is determined based on the mining parameters of deep-concave open-pit mines, the annual output and cost of ore rocks are calculated, and the rationality of the realm location is determined using the net present value of NPV. The floating cone method or LG graph theory method is preferred to determine the mining realm.
The rational determination of the mining realm of deep-concave open-pit mines has been achieved, the applicability of the mining plan has been improved, the economic losses caused by unreasonable expansion of mining has been avoided, and more accurate investment decision analysis has been provided.
Smart Images
Figure CN112053031B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of open-pit mining, and in particular to a method, a device and a storage medium for determining the mining boundary of a deep open-pit mine. Background Art
[0002] At present, most of my country's large-scale open-pit iron ore mines have entered the deep pit mining stage, and they are deepening or expanding the wall by adopting a short-continuous transportation system, developing combined transportation, increasing the step height, and improving the open-pit mining process. However, the wall expansion cost of deep pit open-pit mines is relatively high, and how to determine the optimal open-pit wall expansion plan is directly related to the profitability of mining.
[0003] The traditional method of determining the mining boundary ratio of the expanded wall is to use the economically reasonable mining ratio as the basic criterion and determine the optimal open-pit mining boundary through computer-aided methods. However, the results determined by the above method are more suitable for newly built mines; they do not take into account the deep open-pit mines in production, which are affected by the complex mining conditions. Therefore, the boundary ratio data obtained are greatly deviated from the actual results, which in turn causes damage to the interests of mining companies.
[0004] Therefore, there is an urgent need for a reasonable and effective method for determining the mining boundary of deep open-pit mines. Summary of the invention
[0005] The purpose of the present invention is to provide a method, device and storage medium for determining the mining boundary of a deep open pit mine, so as to realize the reasonable determination of the mining boundary of the deep open pit mine by screening the mining boundary scheme of the open pit mine.
[0006] In order to achieve the above object, the present invention provides a method for determining the mining boundary of a deep open pit mine, the method comprising:
[0007] S110, according to the mining parameters of the deep concave open-pit mine, respectively determine the mining boundary position of the deep concave open-pit mine when the wall is expanded and the mining boundary position of the deep concave open-pit mine when the wall is not expanded; wherein the mining boundary position of the deep concave open-pit mine when the wall is expanded is the first boundary position, and the mining boundary position of the deep concave open-pit mine when the wall is not expanded is the second boundary position;
[0008] S120, determining a first yearly ore and rock output according to the first boundary position, and obtaining yearly mining cost and profit data as a first data set through the first yearly ore and rock output; determining a second yearly ore and rock output according to the second boundary position, and obtaining yearly mining cost and profit data as a second data set through the second yearly ore and rock output;
[0009] S130, determining a third data group according to the difference between each data of the first data group and each data of the second data group;
[0010] S140. Determine whether the first boundary position is reasonable based on the NPV net present value of the third data group, and use the first boundary position determined to be reasonable as the expansion mining boundary of the deep open-pit mine; wherein, if the NPV net present value>the set threshold, the first boundary position is determined to be reasonable.
[0011] Further, preferably, the mining boundary positions of a deep open pit mine during mining with expanded wall and mining without expanded wall are determined according to the floating cone method or the LG graph theory method.
[0012] Further, preferably, the mining parameters of the deep open pit mine include open pit mining ore cost parameters, waste rock cost parameters, economically reasonable stripping ratio parameters, step parameters, platform parameters and road parameters.
[0013] Further, preferably, the calculation formula of NPV net present value is as follows:
[0014] NPV = ∑t = nCFt(1+k)t;
[0015] in:
[0016] CFt is the cash flow in the tth year (CF0 is the cash flow in the first year, i.e. the initial investment, CF0<0)
[0017] k is the discount rate;
[0018] n is the number of years from initial investment to project completion.
[0019] Further, preferably, the discount rate is set at 10%, and the threshold is set at the cash investment amount of the deep pit open-pit mine in the first 5 years.
[0020] Further, preferably, the method for compiling the annual ore and rock production according to the mining boundary position includes:
[0021] S210. Determine the location of the working line at the end of the year layer by layer based on the mining boundary position on the surface topographic map;
[0022] S220. Prepare a mining schedule based on production time;
[0023] S230. Calculate the annual ore and rock production based on the mining schedule and the position of the working line at the end of the year.
[0024] Further, preferably, the surface topography map is a step-layered plan view; wherein,
[0025] The step stratification plan includes the ore-rock boundary and final boundary line of each step level and the amount of ore and rock within the final boundary line of each step level.
[0026] Further, preferably, the drawing parameters of the surface topographic map include the open-pit mining depth, the perimeter of the open-pit mine bottom plane, the slope structure and the slope angle.
[0027] To achieve the above object, the present invention further provides an electronic device, which includes: a memory and a processor, wherein a boundary determination program for expansion mining is stored in the memory, and when the boundary determination program for expansion mining is executed by the processor, the following steps are implemented:
[0028] S110, according to the mining parameters of the deep concave open-pit mine, respectively determine the mining boundary position of the deep concave open-pit mine when the wall is expanded and the mining boundary position of the deep concave open-pit mine when the wall is not expanded; wherein the mining boundary position of the deep concave open-pit mine when the wall is expanded is the first boundary position, and the mining boundary position of the deep concave open-pit mine when the wall is not expanded is the second boundary position;
[0029] S120, determining a first yearly ore and rock output according to the first boundary position, and obtaining yearly mining cost and profit data as a first data set through the first yearly ore and rock output; determining a second yearly ore and rock output according to the second boundary position, and obtaining yearly mining cost and profit data as a second data set through the second yearly ore and rock output;
[0030] S130, determining a third data group according to the difference between each data of the first data group and each data of the second data group;
[0031] S140. Determine whether the first boundary position is reasonable based on the NPV net present value of the third data group, and use the first boundary position determined to be reasonable as the expansion mining boundary of the deep open-pit mine; wherein, if the NPV net present value>the set threshold, the first boundary position is determined to be reasonable.
[0032] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, in which a computer program is stored. The computer program includes a boundary determination program for expanded mining. When the boundary determination program for expanded mining is executed by a processor, the steps of the above-mentioned method for determining the boundary of expanded mining in a deep open-pit mine are implemented.
[0033] As described above, the method, device and storage medium for determining the expanded mining boundary of a deep open-pit mine of the present invention improve the applicability of mining plans by designing a screening link for the expanded mining boundary plan; effectively judge whether the expanded mining boundary of a deep open-pit mine is reasonable, expose the problem of continuing production without expanding the mining boundary resulting in a larger expanded boundary, and revise the existing expanded mining boundary design plan to better provide accurate predictive analysis for investment decisions.
[0034] In order to achieve the above and related purposes, one or more aspects of the present invention include features that will be described in detail later and are particularly pointed out in the claims. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all of these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] By referring to the following description and claims in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easier to understand. In the accompanying drawings:
[0036] Figure 1 It is a schematic diagram of the principle of a method for determining the boundary of expansion mining in a deep open-pit mine according to an embodiment of the present invention;
[0037] Figure 2 It is a schematic diagram of the surface topography of a method for determining the boundary of expansion mining in a deep open-pit mine according to an embodiment of the present invention;
[0038] Figure 3 It is a structural schematic diagram of a preferred embodiment of the electronic device of the present invention. DETAILED DESCRIPTION
[0039] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.
[0040] In order to judge the rationality of the wall expansion mining plan for a deep open-pit mine, a method for determining the wall expansion mining boundary of a deep open-pit mine according to the present invention can determine the rationality of the mining boundary of the deep open-pit mine by screening the wall expansion mining boundary plan of the open-pit mine, thereby preventing the losses caused by unreasonable wall expansion mining and protecting the economic interests of the mining enterprise.
[0041] Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0042] Figure 1 The principle of the method for determining the mining boundary of deep open pit mines is generally described. Specifically, Figure 1 FIG. 1 is a schematic diagram of the principle of a method for determining the mining boundary of a deep open pit mine according to an embodiment of the present invention; Figure 1 As shown,
[0043] The method for determining the mining boundary of a deep open pit mine includes steps S110-S140.
[0044] Specifically, S110, according to the mining parameters of the deep open-pit mine, respectively determine the mining boundary position of the deep open-pit mine during expanded mining and the mining boundary position of the deep open-pit mine during non-expanded mining, wherein the mining boundary position of the deep open-pit mine during expanded mining is the first boundary position, and the mining boundary position of the deep open-pit mine during non-expanded mining is the second boundary position.
[0045] It should be noted that the mining boundary position of a deep open-pit mine during expansion mining and during non-expansion mining is determined according to the floating cone method or the LG graph theory method.
[0046] The mining parameters of deep pit open pit mines include open pit ore cost, waste rock cost, economical reasonable stripping ratio, steps, platforms and road parameters. Specifically, the open pit ore cost, waste rock cost, economical reasonable stripping ratio, steps, platforms and road parameters are set by computer-aided programs, and the boundary stripping ratio is set to be less than or equal to the economical reasonable stripping ratio, and the floating cone method or LG graph theory method is used to calculate the mining boundary position.
[0047] S120, determining a first yearly ore and rock output according to the first boundary position, and obtaining yearly mining cost and profit data as a first data set through the first yearly ore and rock output; determining a second yearly ore and rock output according to the second boundary position, and obtaining yearly mining cost and profit data as a second data set through the second yearly ore and rock output;
[0048] Among them, the method of compiling the annual ore and rock production according to the mining boundary location includes:
[0049] S210. Determine the location of the working line at the end of the year layer by layer based on the mining boundary position on the surface topographic map;
[0050] S220. Prepare a mining schedule based on production time;
[0051] S230. Calculate the annual ore and rock production based on the mining schedule and the position of the working line at the end of the year.
[0052] It should be noted that the surface topographic map is a step-layered plan view; wherein, the step-layered plan view includes the ore-rock boundary and final boundary line of each step level and the amount of ore and rock within the final boundary line of each step level.
[0053] Specifically, the drawing parameters of the surface topographic map include the open-pit mining depth, the bottom plane perimeter of the open-pit mine, the slope structure and the slope angle.
[0054] Figure 2 The surface topographic map of the method for determining the boundary of the expanded mining of deep open pit mines is presented; specifically, Figure 2A surface topographic map of a method for determining the mining boundary of a deep open pit mine in a specific embodiment; Figure 2 As shown, the surface topography map is a step-layered plan view, wherein the step-layered plan view includes the original surface 1 and the mining status 2, the non-expansion mining boundary 3 and the expanded mining boundary 4, the ore within the non-expansion boundary 5 and the rock within the non-expansion boundary 6, the ore increased in the expanded boundary 7 and the rock increased in the expanded boundary 8, and the ore outside the boundary 9.
[0055] The working line position at the end of the year is determined layer by layer on the surface topographic map according to the mining boundary position; then, a mining schedule is prepared based on the production time; the annual ore and rock production is calculated based on the mining schedule and the working line position at the end of the year.
[0056] S130, determining a third data group by the difference between each data of the first data group and each data of the second data group;
[0057] In the specific implementation process, each data of the first data group is subtracted from each data of the second data group to obtain the data difference of each data as the third data group, which specifically includes two data items, namely, the net cash amount and the NPV net present value.
[0058] S140. Determine whether the first boundary position is reasonable based on the NPV net present value of the third data group, and use the first boundary position determined to be reasonable as the expansion mining boundary of the deep open-pit mine; wherein, if the NPV net present value>the set threshold, the first boundary position is determined to be reasonable.
[0059] It should be noted that:
[0060] The calculation formula for NPV net present value is as follows:
[0061] NPV = ∑t = nCFt(1+k)t;
[0062] Where: CFt is the cash flow in the tth year (CF0 is the cash flow in the first year, i.e. the initial investment, CF0<0); k is the discount rate; n is the number of years from the initial investment to the end of the project.
[0063] In the actual mine boundary determination plan design process, the discount rate is set at 10% and the threshold is set as the cash investment amount in the first five years.
[0064] In summary, the method for determining the boundary of wall expansion mining in a deep open-pit mine of the present invention is to obtain a first data group after designing a wall expansion mining scheme, and also to design a non-wall expansion mining scheme to obtain a second data group, and to use the second data group of the mutually exclusive non-wall expansion mining scheme to correct the first data group obtained after the wall expansion mining scheme, and if the third data group obtained after correction shows that it is still feasible, then the feasibility of the wall expansion mining scheme is fully guaranteed.
[0065] Take a mine as an example. An open-pit iron mine is a production mine and is planning to carry out boundary expansion design:
[0066] Assume that the basic conditions of the mine are: the mine scale is 17 million tons / a, if the boundary expansion is carried out, 78 million tons of ore and 140 million tons of rock will be added;
[0067] The determined first boundary position is obtained by computer, the annual ore and rock production is compiled, and the annual mining cost and profit data are calculated as the first data group, as shown in the following table;
[0068]
[0069] According to the determined second boundary position, the annual ore and rock production is compiled, and the annual mining cost and profit data are calculated as the second data group, as shown in the following table;
[0070]
[0071] The difference between each data of the first data group and each data of the second data group is taken as the third data group; as shown in the following table;
[0072]
[0073] In summary, when the discount rate is 10%, the discounted net present value of the first data group of the expanded mining plan is 1.5039 billion yuan, showing a good economic effect.
[0074] However, after determining the boundary of expanded mining in deep open-pit mines according to the method of the present invention, it can be seen from the third data group that the discounted net present value is only 150 million yuan, and the cash investment in the first 6 years is 2 billion yuan; therefore, the determination of the first boundary position is unreasonable, and the expanded mining plan is not advisable.
[0075] Specifically, after the expansion mining scheme was corrected by the method for determining the expansion mining boundary of a deep open-pit mine of the present invention, it was found that the economic effect of the expansion boundary was significantly reduced.
[0076] Therefore, compared with the expansion boundary determined by the traditional method, the final expansion boundary determined by the method for determining the expansion boundary of deep concave open-pit mines of the present invention will be narrower after considering the differential benefits. In the actual implementation process, the design of the expansion boundary of the open-pit mine can be combined with the actual situation of the mine funds to judge the feasibility of the plan.
[0077] The present invention provides a method for determining the boundary of expansion mining in a deep open-pit mine, which is applied to an electronic device 3.
[0078] Figure 3The application environment of a preferred embodiment of the method for determining the mining boundary of a deep open pit mine according to the present invention is shown.
[0079] Reference Figure 3 As shown, in this embodiment, the electronic device 3 can be a terminal device with computing functions such as a server, a smart phone, a tablet computer, a portable computer, or a desktop computer.
[0080] The electronic device 3 includes a processor 32 , a memory 31 , a communication bus 33 and a network interface 35 .
[0081] The memory 31 includes at least one type of readable storage medium. The at least one type of readable storage medium may be a non-volatile storage medium such as a flash memory, a hard disk, a multimedia card, a card-type memory 31, etc. In some embodiments, the readable storage medium may be an internal storage unit of the electronic device 3, such as a hard disk of the electronic device 3. In other embodiments, the readable storage medium may also be an external memory 31 of the electronic device 3, such as a plug-in hard disk equipped on the electronic device 3, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc.
[0082] In this embodiment, the readable storage medium of the memory 31 is generally used to store the boundary determination program 30 installed in the electronic device 3. The memory 31 can also be used to temporarily store data that has been output or is to be output.
[0083] In some embodiments, the processor 32 can be a central processing unit (CPU), a microprocessor or other data processing chip, which is used to run the program code or process data stored in the memory 31, such as executing the boundary determination program 30 of the expansion mining.
[0084] The communication bus 33 is used to realize the connection and communication between these components.
[0085] The network interface 34 may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), and is generally used to establish a communication connection between the electronic device 3 and other electronic devices.
[0086] Figure 3 Only the electronic device 3 having components 31 - 34 is shown, but it should be understood that implementation of all of the components shown is not required, and more or fewer components may alternatively be implemented.
[0087] Optionally, the electronic device 3 may also include a user interface, which may include an input unit such as a keyboard, a voice input device such as a microphone and other devices with voice recognition function, a voice output device such as a speaker, headphones, etc. Optionally, the user interface may also include a standard wired interface or a wireless interface.
[0088] Optionally, the electronic device 3 may further include a display, which may also be referred to as a display screen or a display unit. In some embodiments, it may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an organic light-emitting diode (OLED) touch device. The display is used to display information processed in the electronic device 3 and to display a visual user interface.
[0089] Optionally, the electronic device 3 may also include a radio frequency (RF) circuit, a sensor, an audio circuit, etc., which will not be described in detail here.
[0090] exist Figure 3 In the device embodiment shown, the memory 31 as a computer storage medium may include an operating system and a boundary determination program 30 for expansion and mining; when the processor 32 executes the boundary determination program 30 for expansion and mining stored in the memory 31, the following steps are implemented:
[0091] S110, according to the mining parameters of the deep concave open-pit mine, respectively determine the mining boundary position of the deep concave open-pit mine when the wall is expanded and the mining boundary position of the deep concave open-pit mine when the wall is not expanded; wherein the mining boundary position of the deep concave open-pit mine when the wall is expanded is the first boundary position, and the mining boundary position of the deep concave open-pit mine when the wall is not expanded is the second boundary position;
[0092] S120, determining a first yearly ore and rock output according to the first boundary position, and obtaining yearly mining cost and profit data as a first data set through the first yearly ore and rock output; determining a second yearly ore and rock output according to the second boundary position, and obtaining yearly mining cost and profit data as a second data set through the second yearly ore and rock output;
[0093] S130, determining a third data group according to the difference between each data of the first data group and each data of the second data group;
[0094] S140. Determine whether the first boundary position is reasonable based on the NPV net present value of the third data group, and use the first boundary position determined to be reasonable as the expansion mining boundary of the deep open-pit mine; wherein, if the NPV net present value>the set threshold, the first boundary position is determined to be reasonable.
[0095] In other embodiments, the boundary determination program 30 of the expansion mining can also be divided into one or more modules, one or more modules are stored in the memory 31 and executed by the processor 32 to complete the present invention. The module referred to in the present invention refers to a series of computer program instruction segments that can complete specific functions.
[0096] In addition, the present invention also proposes a computer-readable storage medium, which includes a boundary determination program for expanded mining. When the boundary determination program for expanded mining is executed by a processor, the operation of a method for determining the boundary of expanded mining in a deep open-pit mine is implemented.
[0097] The specific implementation of the computer-readable storage medium of the present invention is roughly the same as the specific implementation of the method, system, and electronic device for determining the expansion mining boundary of a deep open-pit mine based on privacy protection mentioned above, and will not be repeated here.
[0098] In general, the method for determining the expanded mining boundary of a deep open-pit mine, the electronic device and the computer-readable storage medium of the present invention effectively judge whether the expanded mining boundary of a deep open-pit mine is reasonable, exposes the problem of continuing production without expanding the mining boundary resulting in a larger expanded boundary, and modifies the existing expanded mining boundary design scheme to better provide accurate predictive analysis for investment decisions.
[0099] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, device, article or method. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, device, article or method including the element.
[0100] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments. Through the description of the above implementation modes, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases the former is a better implementation mode. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.
[0101] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
[0102] Although the above disclosed content shows exemplary embodiments of the present invention, it should be noted that various changes and modifications can be made without departing from the scope of the present invention defined in the claims. According to the structure of the inventive embodiments described herein, the constituent elements of the claims can be replaced with any functionally equivalent elements. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.
Claims
1. A method for determining the mining boundary of a deep open pit mine, characterized in that the method include: S110, according to the mining parameters of the deep concave open-pit mine, respectively determine the mining boundary position of the deep concave open-pit mine when the wall is expanded and the mining boundary position of the deep concave open-pit mine when the wall is not expanded; wherein the mining boundary position of the deep concave open-pit mine when the wall is expanded is the first boundary position, and the mining boundary position of the deep concave open-pit mine when the wall is not expanded is the second boundary position; S120, determining a first yearly ore and rock output according to the first boundary position, and obtaining yearly mining cost and profit data as a first data set through the first yearly ore and rock output; determining a second yearly ore and rock output according to the second boundary position, and obtaining yearly mining cost and profit data as a second data set through the second yearly ore and rock output; S130, determining a third data group according to the difference between each data of the first data group and each data of the second data group; the third data group includes two data items: net cash amount and NPV net present value; The calculation formula of the NPV net present value is as follows: NPV = ∑t = nCFt(1+k)t; in: CFt is the cash flow in the tth year; CF0 is the cash flow in the first year, i.e. the initial investment, CF0<0; k is the discount rate; n is the number of years from initial investment to project completion; S140. Determine whether the first boundary position is reasonable based on the NPV net present value of the third data group, and use the first boundary position determined to be reasonable as the expansion mining boundary of the deep open-pit mine; wherein, if the NPV net present value>the set threshold, then the first boundary position is determined to be reasonable; the set threshold is the cash investment amount of the deep open-pit mine in the first 5 years.
2. The method for determining the mining boundary of a deep open pit mine according to claim 1, characterized in that: The mining boundary position of the deep open pit mine during mining with expanded wall and mining without expanded wall is determined according to the floating cone method or the LG graph theory method.
3. The method for determining the mining boundary of a deep open pit mine according to claim 1, characterized in that: The mining parameters of the deep pit open-pit mine include open-pit mining ore cost parameters, waste rock cost parameters, economically reasonable stripping ratio parameters, step parameters, platform parameters and road parameters.
4. The method for determining the mining boundary of a deep open pit mine according to claim 1, characterized in that: The discount rate is set at 10%.
5. The method for determining the mining boundary of a deep open pit mine according to claim 1, characterized in that: The method for compiling the annual ore and rock production according to the mining boundary position includes: S210. Determine the working line position at the end of the year layer by layer based on the mining boundary position on the surface topographic map; S220. Prepare a mining schedule based on production time; S230, calculating the annual ore and rock production according to the mining schedule and the working line position at the end of the year.
6. The method for determining the mining boundary of a deep open pit mine according to claim 5, characterized in that: The surface topography map is a step-layered plan view; wherein: The step stratification plan includes the ore-rock boundary and final boundary line of each step level and the amount of ore and rock within the final boundary line of each step level.
7. The method for determining the mining boundary of a deep open pit mine according to claim 6, characterized in that: The drawing parameters of the surface topographic map include the open-pit mining depth, the perimeter of the open-pit mine bottom plane, the slope structure and the slope angle.
8. An electronic device, characterized in that: The electronic device comprises: a memory and a processor, wherein a boundary determination program for extended mining is stored in the memory, and when the boundary determination program for extended mining is executed by the processor, the following steps are implemented: S110, according to the mining parameters of the deep concave open-pit mine, respectively determine the mining boundary position of the deep concave open-pit mine when the wall is expanded and the mining boundary position of the deep concave open-pit mine when the wall is not expanded; wherein the mining boundary position of the deep concave open-pit mine when the wall is expanded is the first boundary position, and the mining boundary position of the deep concave open-pit mine when the wall is not expanded is the second boundary position; S120, determining a first yearly ore and rock output according to the first boundary position, and obtaining yearly mining cost and profit data as a first data set through the first yearly ore and rock output; determining a second yearly ore and rock output according to the second boundary position, and obtaining yearly mining cost and profit data as a second data set through the second yearly ore and rock output; S130, determining a third data group according to the difference between each data of the first data group and each data of the second data group; the third data group includes two data items: net cash amount and NPV net present value; The calculation formula of the NPV net present value is as follows: NPV = ∑t = nCFt(1+k)t; in: CFt is the cash flow in the tth year; CF0 is the cash flow in the first year, i.e. the initial investment, CF0<0; k is the discount rate; n is the number of years from initial investment to project completion; S140. Determine whether the first boundary position is reasonable based on the NPV net present value of the third data group, and use the first boundary position determined to be reasonable as the expansion mining boundary of the deep open-pit mine; wherein, if the NPV net present value>the set threshold, then the first boundary position is determined to be reasonable; the set threshold is the cash investment amount of the deep open-pit mine in the first 5 years.
9. A computer storage medium, characterized in that: A computer program is stored in a computer-readable storage medium, and the computer program includes a boundary determination program for expanded mining. When the boundary determination program for expanded mining is executed by a processor, the steps of the method for determining the boundary of expanded mining in a deep open-pit mine as described in any one of claims 1 to 7 are implemented.