Research On Transportation Path Optimization Of Pure Electric Truck Considering Charging Demand In Open-pit Mine

With the widespread popularity of the green development concept,it is crucial for mining companies to build eco-friendly mines.In this context,pure electric mine trucks have become a popular choice.However,the problem of how to properly arrange the transportation path of pure electric mine trucks between loading and unloading points needs to be urgently solved.Currently,there is a lack of research on path optimization for pure electric mine trucks,and factors such as energy recovery,charging demand,and battery loss have not been fully explored.In order to solve the above problems,this paper constructs a pure electric truck transportation path optimization model considering the charging demand in open-pit mines and designs a multi-strategy fusion ant colony algorithm to solve the model.This paper provides a solution for pure electric mine trucks to choose the optimal paths between loading points and unloading points.This paper mainly includes the following aspects:(1)Research progress and related theory of truck path optimization in open pit mine.Firstly,the research progress at home and abroad is summarized and evaluated from three aspects: the development and application of pure electric mine trucks,path optimization models of open-pit mine trucks,and path optimization algorithms.Then,the basic theories of electric mine trucks,path optimization in open-pit mines,and solving methods of path optimization problems are outlined.This theoretical foundation serves as a support for proposing a multi-strategy fusion ant colony algorithm to solve the path optimization model of pure electric truck transportation in open-pit mines considering charging demand.(2)The path optimization model of pure electric trucks considering charging demands in open-pit mines is established.Analysis of the charging and discharging characteristics of pure electric trucks in open-pit mines reveals the importance of this consideration in the optimization model.A power consumption calculation method tailored specifically to pure electric mine trucks is designed.To optimize transportation cost,A path optimization model for pure electric trucks in open-pit mines is established.This model takes into account a range of factors,including driving state,charging rate,road environment,heavy load downhill energy recovery,battery loss,and other relevant considerations.The transportation cost,which is the sum of driving costs,charging and discharging costs,and carbon emission costs,is set as the optimization objective.(3)A multi-strategy fusion ant colony algorithm is designed.A path optimization algorithm based on a multi-strategy fusion ant colony algorithm is designed for the model established in this paper.In order to balance global and local searches and prevent the population from falling into a local optimum,an improved heuristic function and adaptive parameter design are introduced into this algorithm.Algorithmic testing demonstrates that this algorithm can efficiently solve path optimization problems and significantly improve the quality of solutions obtained.(4)Application of electric truck routing optimization in a practical open-pit mine environment.After collecting actual production data from a certain open-pit mine in Henan Province and conducting a series of preliminary preparation such as data processing,the proposed model and algorithm will be applied for simulation experiments.Through the simulation results,by solving the proposed model through the algorithm designed in this paper,the path optimization scheme meeting the production requirements can be obtained.In addition,the model proposed in this paper considers a more comprehensive range of factors and can reflect the operational state of pure electric trucks in transporting minerals in open-pit mines.As a result,it has demonstrated a better performance in reducing the transportation cost of trucks.The research results of the thesis provide a solution for the path optimization problem of pure electric mine trucks with charging requirements.To a certain extent,it has provided a comprehensive approach for promoting the efficient use of pure electric trucks in the open-pit mining industry,and further promoted the construction of green mines.