CN112036685B - Underground metal mine trackless transportation system scheduling simulation method and device - Google Patents
Underground metal mine trackless transportation system scheduling simulation method and device Download PDFInfo
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Abstract
The invention provides a dispatching simulation method and device for an underground metal mine trackless transportation system, and belongs to the field of mine trackless transportation simulation. The method comprises the following steps: establishing an underground metal mine trackless transportation system dispatching simulation model to simulate the trackless transportation process of the ore from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation; and determining the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result. By adopting the invention, the optimal ratio of the number of trucks to the number of scooptrams can be obtained.
Description
Technical Field
The invention relates to the field of mine trackless transportation simulation, in particular to a scheduling simulation method and device for an underground metal mine trackless transportation system.
Background
The trackless transport system of underground metal mines is a complex discrete event system with both discreteness and randomness.
The number ratio of the scraper to the transport truck in the trackless transport system has been partially studied by students at home and abroad, wherein the main method is a system engineering method. However, because the trackless transportation system has the characteristics of large transportation capacity, scattered operation points, complex transportation route, narrow transportation tunnel, dynamic change and the like, the optimal ratio of the number of trucks to the number of scooptrams is difficult to obtain by a conventional system engineering optimization method.
Disclosure of Invention
The embodiment of the invention provides a dispatching simulation method and device for an underground metal mine trackless transportation system, which can obtain the optimal proportion of the number of trucks and shovels, thereby ensuring that the trackless transportation of ores is smoothly completed, improving the trackless transportation efficiency, improving the average utilization rate of the trucks and saving the trackless transportation time and distance cost. The technical scheme is as follows:
in one aspect, a dispatching simulation method of an underground metal mine trackless transportation system is provided, and the method is applied to electronic equipment and comprises the following steps:
establishing an underground metal mine trackless transportation system dispatching simulation model to simulate the trackless transportation process of the ore from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation;
and determining the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result.
Further, the simulation model is used for simulating the trolley-free ore transportation process of trucks under different numbers of trucks and the cooperation of the scraper, in the simulated trolley-free ore transportation process, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes for ore dropping and transportation are completed, and the simulation model comprises the following steps:
a1, randomly selecting a stope from a stope queue to be transported after rock drilling and blasting by any truck in the truck queue, and running the stope to the stope by empty vehicles, and loading ore to the truck if a scraper of the stope is idle; otherwise, queuing and waiting;
a2, leaving the stope after the truck is fully loaded, and loading ore by any other truck in the truck queue;
a3, randomly selecting a drop shaft from the drop shaft queue by a fully loaded truck, fully carrying the drop shaft to the drop shaft, and unloading ore if the drop shaft is idle; otherwise, queuing and waiting;
a4, after unloading the ore by the fully loaded truck, leaving the drop shaft, adding the ore into a truck queue, returning to the step A1, and continuously executing so as to circularly execute the trackless transportation task of the ore until the ore falling transportation of all stopes is completed;
if the ore in the stope to be transported is completed, rejecting the ore from the stope queue, and randomly selecting the truck from the rest stopes to be transported.
Further, the truck queuing time in step A1 is the loading time of the scraper.
Further, the queuing waiting in step A3 includes:
sequencing according to the time from different trucks to the drop shaft, unloading firstly by a arrival person, queuing the rest trucks, and unloading operation sequentially.
Further, the simulation model sequentially carries out simulation by using different truck numbers, and simulation results under different truck numbers are obtained by simulating the trolley-free ore transportation process of the truck and scraper in a plurality of times under each truck number;
the simulation results under different numbers of trucks comprise: total time for completing stope ore trackless transportation tasks under different numbers of trucks, average utilization rate of trucks and total freight distance.
In one aspect, there is provided an underground metal mine trackless transportation system scheduling simulation apparatus, the apparatus being applied to an electronic device, the apparatus comprising:
the simulation module is used for establishing a dispatching simulation model of the underground metal mine trackless transportation system to simulate the trackless transportation process of the ore from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation;
and the determining module is used for determining the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result.
Further, the simulation module includes:
the loading unit is used for randomly selecting one stope from a stope queue to be transported after rock drilling and blasting by any truck in the truck queue and running the stope to the stope by empty vehicles, and if a scraper of the stope is idle, loading the ore to the truck; otherwise, queuing and waiting;
the selecting unit is used for leaving the stope after the truck is fully loaded, and any other truck in the truck queue enters the site to carry out ore loading operation;
the unloading unit is used for randomly selecting one drop shaft from the drop shaft queue by a fully loaded truck and fully carrying the drop shaft to the drop shaft, and unloading ore if the drop shaft is idle; otherwise, queuing and waiting;
the loading unit is used for leaving the drop shaft after the full truck unloads the ore, and the loading unit is returned to the loading queue to be continuously executed so as to circularly execute the trackless transportation task of the ore until the ore falling transportation of all stopes is completed;
if the ore in the stope to be transported is completed, rejecting the ore from the stope queue, and randomly selecting the truck from the rest stopes to be transported.
Further, the truck in-line waiting time in the loading unit is the loading time of the scraper.
Further, queuing in the offloading unit includes:
sequencing according to the time from different trucks to the drop shaft, unloading firstly by a arrival person, queuing the rest trucks, and unloading operation sequentially.
Further, the simulation model sequentially carries out simulation by using different truck numbers, and simulation results under different truck numbers are obtained by simulating the trolley-free ore transportation process of the truck and scraper in a plurality of times under each truck number;
the simulation results under different numbers of trucks comprise: total time for completing stope ore trackless transportation tasks under different numbers of trucks, average utilization rate of trucks and total freight distance.
In one aspect, an electronic device is provided, the electronic device includes a processor and a memory, at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor to implement the above-mentioned underground metal mine trackless transportation system scheduling simulation method.
In one aspect, a computer readable storage medium is provided, in which at least one instruction is stored, the at least one instruction being loaded and executed by a processor to implement the above-described method for scheduling simulation of a trolley-bus transportation system for an underground metal mine.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
according to the embodiment of the invention, the underground metal mine trackless transportation system dispatching simulation model is established to simulate the trackless transportation process of the ore from a stope to an drop shaft, and the trackless transportation process of the ore matched with the scraper by trucks with different numbers is simulated, so that the optimal ratio of the number of the trucks to the number of the scraper is obtained, the trackless transportation efficiency is improved while the smooth completion of the trackless transportation task of the ore is ensured, the average utilization rate of the trucks is improved, and the time and distance cost of the trackless transportation are saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a dispatching simulation method of an underground metal mine trackless transportation system provided by the embodiment of the invention;
FIG. 2 is a schematic workflow diagram of a simulation model provided by an embodiment of the present invention;
FIGS. 3 (a), (b) and (c) are schematic diagrams of total time, average truck utilization and total distance for completing the task of trackless transportation of stope ore under different numbers of trucks according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a dispatching simulation device of an underground metal mine trackless transportation system provided by the embodiment of the invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a method for simulating dispatching of a trolley-bus transportation system of an underground metal mine, where the method may be implemented by an electronic device, and the electronic device may be a terminal or a server, and the method includes:
s101, establishing a dispatching simulation model of an underground metal mine trackless transportation system to simulate the trackless transportation process of ores from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation;
s102, determining the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result.
According to the underground metal mine trackless transportation system dispatching simulation method provided by the embodiment of the invention, the underground metal mine trackless transportation system dispatching simulation model is established to simulate the trackless transportation process of the ore from a stope to an drop shaft, and the trackless transportation processes of the ore matched with trucks and shovels under different numbers of trucks are simulated to obtain the optimal ratio of the numbers of the trucks and the shovels, so that the trackless transportation task of the ore is successfully completed, the trackless transportation efficiency is increased, the average utilization rate of the trucks is improved, and the time and distance cost of the trackless transportation are saved.
In this embodiment, before the underground metal mine trackless transportation system scheduling simulation model is built, simulation planning needs to be performed, specifically:
since the production efficiency of the underground metal mine trackless transportation system directly influences the economic benefit of the mine, the searching of a high-efficiency and low-cost trackless transportation scheme has important practical significance and economic value. The exploitation process of the underground metal mine comprises the following steps: rock drilling, charge blasting, ore loading, trackless transportation and ore unloading, the underground metal mine trackless transportation system scheduling simulation model mainly researches the trackless transportation process of ore from loading to unloading.
In the specific implementation of the foregoing dispatching simulation method for the underground metal mine trackless transportation system, further, as shown in fig. 2, the simulation model in S101 is used for simulating the ore trackless transportation process of trucks under different numbers of trucks and matched with a scraper, in the simulated ore trackless transportation process, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes for unloading ores are completely transported, and includes:
a1, randomly selecting a stope from a stope queue to be transported after rock drilling and blasting by any truck in the truck queue, and running the stope to the stope by empty vehicles, and if a scraper of the stope is idle, directly loading the ore to the truck; otherwise, queuing and waiting;
in this embodiment, the truck in-line waiting time is the loading time of the scraper.
A2, leaving the stope after the truck is fully loaded, and loading ore by any other truck in the truck queue;
in this embodiment, the in-position refers to the truck entering the designated location of the scraper load.
A3, randomly selecting a drop shaft from the drop shaft queue by a fully loaded truck, fully carrying the drop shaft to the drop shaft, and directly unloading ores if the drop shaft is idle; otherwise, queuing and waiting;
in this embodiment, if the drop shaft is busy, the sequencing is performed according to the time from different trucks to the drop shaft, the arrival person first unloads, and the other trucks wait in a queue to perform the unloading operation sequentially.
A4, after unloading the ore by the fully loaded truck, leaving the drop shaft, adding the ore into a truck queue, returning to the step A1, and continuously executing so as to circularly execute the trackless transportation task of the ore until the ore falling transportation of all stopes is completed;
if the ore in the stope to be transported is completed, rejecting the ore from the stope queue, and randomly selecting the truck from the rest stopes to be transported.
In this embodiment, in the simulation model, the trolley-free transportation process of the ore matched with the scraper is simulated by using different numbers of trucks, the different numbers of trucks serve a plurality of stopes, the trolley-free transportation task of the ore of the trucks is a circulation process, the service object of the trolley-free transportation task is not limited to a single fixed stope, the unloading point is not limited to a certain drop shaft, and the simulation process fully follows the randomness of the trolley-free transportation system of the ore.
In this embodiment, the simulation model sequentially performs simulation with different truck numbers, and under each truck number, the simulation results under different truck numbers are obtained by simulating the trolley-free ore transportation process of the truck and the scraper in a large number of times (for example, 1000 times), so as to determine the optimal ratio of the truck and the scraper number according to the simulation results;
the simulation results under different numbers of trucks comprise: total time for completing stope ore trackless transportation tasks under different numbers of trucks, average utilization rate of trucks and total freight distance.
In this embodiment, taking three scooptrams as an example, explaining how to determine the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result, fig. 3 is a schematic diagram of the simulation result of the simulation model, where fig. 3 (a), 3 (b), and 3 (c) respectively show the total time, average utilization rate of trucks, and total distance of transportation of the ore in the stope under different numbers of trucks, specifically:
when 3 scraper carries out ore drawing to 3 stopes simultaneously, 1 truck can not finish rated production and transportation tasks, and the total distance for finishing tasks gradually becomes stable along with the gradual increase of the number of trucks. When the number of trucks responsible for transporting the ore increases to 6, the trend of decreasing the completion time of the transportation task becomes gentle, the average utilization rate of the trucks is 91.8%, the change of the transportation time is smaller when the number of trucks is continuously increased to 7 trucks (fig. 3 (a) and 3 (b)), the average utilization rate of the trucks is as low as 88.2%, and the total transportation distance is increased by approximately 1000 meters compared with the transportation of 6 trucks (fig. 3 (c)). Therefore, when 3 stopes are transported simultaneously, 6 trucks are selected, so that higher transportation efficiency can be achieved, and the utilization rate of the trucks is ensured.
The simulation program of the underground metal mine trackless transportation system scheduling simulation method provided by the embodiment of the invention can be written by adopting the python language, the simulation program is written by adopting an active scanning method aiming at the trackless transportation system, the state change of the trackless transportation system is simulated according to the time sequence, the state of the system is inspected once at regular intervals, the state of the system is recorded, the time for completing the trackless transportation task of stope ore, the total queuing time and the transportation distance of trucks are accumulated, and a change curve chart of each accumulated result relative to the number of trucks is output.
In this embodiment, all trucks and scoopers in the trackless transportation of the ore form a trackless transportation system, and the system states include: whether trucks and conveyors in the trackless transport system are occupied or idle.
In this embodiment, the shorter the total queuing time of the truck, the higher the average utilization of the vehicle, and the two are in inverse proportion.
In summary, the underground metal mine trackless transportation system scheduling simulation method provided by the embodiment of the invention realizes the construction of the underground metal mine trackless transportation system scheduling simulation model, simulates the ore transportation process from a stope to a drop shaft trackless transportation process, approximates the actual result by simulating the ore transportation process of the truck and the scraper in a large number of experiments, obtains the optimal matching of the number of the truck and the scraper, determines the matching scheme of the more efficient and economical trackless equipment (comprising the truck and the scraper), can increase the trackless transportation efficiency, improve the average utilization rate of the truck and save the trackless transportation cost while ensuring the smooth completion of transportation production tasks.
The invention also provides a concrete implementation mode of the underground metal mine trackless transportation system dispatching simulation device, and the concrete implementation mode of the underground metal mine trackless transportation system dispatching simulation device is applicable to the concrete implementation mode of the underground metal mine trackless transportation system dispatching simulation device provided by the invention, and will not be repeated in the concrete implementation mode of the underground metal mine trackless transportation system dispatching simulation device.
As shown in fig. 4, the embodiment of the invention further provides a dispatching simulation device for an underground metal mine trackless transportation system, which comprises:
the simulation module 11 is used for establishing a dispatching simulation model of the underground metal mine trackless transportation system to simulate the trackless transportation process of the ore from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation;
a determining module 12 for determining an optimal ratio of the number of trucks to the number of scooptrams based on the simulation results.
According to the underground metal mine trackless transportation system dispatching simulation device, the underground metal mine trackless transportation system dispatching simulation model is established to simulate the trackless transportation process of ores from a stope to an drop shaft, and the optimal proportion of the number of trucks to the number of scoopers is obtained by simulating the trackless transportation process of ores matched with different numbers of trucks and scoopers, so that the trackless transportation efficiency is improved, the average utilization rate of the trucks is improved, and the time and distance cost of trackless transportation are saved while the trackless transportation of the ores is ensured to be successfully completed.
In a specific embodiment of the foregoing underground metal mine trackless transportation system scheduling simulation apparatus, further, the simulation module includes:
the loading unit is used for randomly selecting one stope from a stope queue to be transported after rock drilling and blasting by any truck in the truck queue and running the stope to the stope by empty vehicles, and if a scraper of the stope is idle, loading the ore to the truck; otherwise, queuing and waiting;
the selecting unit is used for leaving the stope after the truck is fully loaded, and any other truck in the truck queue enters the site to carry out ore loading operation;
the unloading unit is used for randomly selecting one drop shaft from the drop shaft queue by a fully loaded truck and fully carrying the drop shaft to the drop shaft, and unloading ore if the drop shaft is idle; otherwise, queuing and waiting;
the loading unit is used for leaving the drop shaft after the full truck unloads the ore, and the loading unit is returned to the loading queue to be continuously executed so as to circularly execute the trackless transportation task of the ore until the ore falling transportation of all stopes is completed;
if the ore in the stope to be transported is completed, rejecting the ore from the stope queue, and randomly selecting the truck from the rest stopes to be transported.
In the specific embodiment of the underground metal mine trackless transportation system scheduling simulation device, further, the truck queuing waiting time in the loading unit is the loading time of the scraper.
In a specific embodiment of the foregoing underground metal mine trackless transport system dispatch simulation device, further, queuing in the unloading unit includes:
sequencing according to the time from different trucks to the drop shaft, unloading firstly by a arrival person, queuing the rest trucks, and unloading operation sequentially.
In the specific implementation mode of the dispatching simulation device of the underground metal mine trackless transportation system, further, the simulation model sequentially carries out simulation according to different truck numbers, and simulation results under different numbers of trucks are obtained through simulating the ore trackless transportation process of the truck and the scraper in a plurality of times under each truck number;
the simulation results under different numbers of trucks comprise: total time for completing stope ore trackless transportation tasks under different numbers of trucks, average utilization rate of trucks and total freight distance.
Fig. 5 is a schematic structural diagram of an electronic device 600 according to an embodiment of the present invention, where the electronic device 600 may have a relatively large difference due to different configurations or performances, and may include one or more processors (central processing units, CPU) 601 and one or more memories 602, where at least one instruction is stored in the memories 602, and the at least one instruction is loaded and executed by the processor 601 to implement the above-mentioned underground metal mine trackless transportation system scheduling simulation method.
In an exemplary embodiment, a computer readable storage medium, such as a memory comprising instructions executable by a processor in a terminal to perform the above-described underground metal mine trackless transport system scheduling simulation method is also provided. For example, the computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (2)
1. The dispatching simulation method of the underground metal mine trackless transportation system is characterized by comprising the following steps of:
establishing an underground metal mine trackless transportation system dispatching simulation model to simulate the trackless transportation process of the ore from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation;
determining the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result;
the simulation model is used for simulating the trolley-free ore transportation process of trucks under different numbers and matched with the scraper, and in the simulated trolley-free ore transportation process, the trucks randomly select stopes for ore loading and randomly select drop shafts for ore unloading until all stopes for ore dropping and transportation are completed, and comprises the following steps:
a1, randomly selecting a stope from a stope queue to be transported after rock drilling and blasting by any truck in the truck queue, and running the stope to the stope by empty vehicles, and loading ore to the truck if a scraper of the stope is idle; otherwise, queuing and waiting;
a2, leaving the stope after the truck is fully loaded, and loading ore by any other truck in the truck queue;
a3, randomly selecting a drop shaft from the drop shaft queue by a fully loaded truck, fully carrying the drop shaft to the drop shaft, and unloading ore if the drop shaft is idle; otherwise, queuing and waiting;
a4, after unloading the ore by the fully loaded truck, leaving the drop shaft, adding the ore into a truck queue, returning to the step A1, and continuously executing so as to circularly execute the trackless transportation task of the ore until the ore falling transportation of all stopes is completed;
if the ore in the stope to be transported is completed, rejecting the ore from a stope queue, and randomly selecting the residual stope to be transported by a truck;
the truck queuing waiting time in the step A1 is the loading time of the scraper;
wherein, the queuing waiting in the step A3 comprises:
sequencing according to the time from different trucks to the drop shaft, unloading firstly by an arrival person, queuing the rest trucks for waiting, and sequentially unloading;
the simulation model sequentially carries out simulation by using different truck numbers, and simulation results under different truck numbers are obtained by simulating the trolley-free ore transportation process of the truck and scraper in a plurality of times under each truck number;
the simulation results under different numbers of trucks comprise: total time for completing stope ore trackless transportation tasks under different numbers of trucks, average utilization rate of trucks and total freight distance.
2. An underground metal mine trackless transportation system dispatch simulation device, characterized by comprising:
the simulation module is used for establishing a dispatching simulation model of the underground metal mine trackless transportation system to simulate the trackless transportation process of the ore from a stope to an drop shaft; wherein each stope is provided with a scraper for loading ore into a truck; the simulation model is used for simulating the trackless transportation process of ores matched with the scraper by trucks with different numbers, and in the simulated trackless transportation process of ores, the trucks randomly select stopes for loading ores and randomly select drop shafts for unloading ores until all stopes are completely in ore falling transportation;
the determining module is used for determining the optimal ratio of the number of trucks to the number of scooptrams according to the simulation result;
wherein, the emulation module includes:
the loading unit is used for randomly selecting one stope from a stope queue to be transported after rock drilling and blasting by any truck in the truck queue and running the stope to the stope by empty vehicles, and if a scraper of the stope is idle, loading the ore to the truck; otherwise, queuing and waiting;
the selecting unit is used for leaving the stope after the truck is fully loaded, and any other truck in the truck queue enters the site to carry out ore loading operation;
the unloading unit is used for randomly selecting one drop shaft from the drop shaft queue by a fully loaded truck and fully carrying the drop shaft to the drop shaft, and unloading ore if the drop shaft is idle; otherwise, queuing and waiting;
the loading unit is used for leaving the drop shaft after the full truck unloads the ore, and the loading unit is returned to the loading queue to be continuously executed so as to circularly execute the trackless transportation task of the ore until the ore falling transportation of all stopes is completed;
if the ore in the stope to be transported is completed, rejecting the ore from a stope queue, and randomly selecting the residual stope to be transported by a truck;
wherein the truck queuing time in the loading unit is the loading time of the scraper;
wherein the queuing in the offloading unit comprises:
sequencing according to the time from different trucks to the drop shaft, unloading firstly by an arrival person, queuing the rest trucks for waiting, and sequentially unloading;
the simulation model sequentially carries out simulation by using different truck numbers, and simulation results under different truck numbers are obtained by simulating the trolley-free ore transportation process of the truck and scraper in a plurality of times under each truck number;
the simulation results under different numbers of trucks comprise: total time for completing stope ore trackless transportation tasks under different numbers of trucks, average utilization rate of trucks and total freight distance.
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