Research On Path Planning Model And Application Of Transport Truck In Open-pit Mine

In the open pit production process,transportation costs account for more than 50% of the total production cost.As the mining depth of open pit mines deepens,the truck transportation distance continues to increase,which brings a substantial increase in freight.How to arrange the transportation of trucks reasonably has become an urgent problem to be solved by open-pit mining enterprises.Transportation road planning is an important part of the systematic management of open pit mines.Arranging the production and transportation routes of open pit mines scientifically and reasonably is the premise and key to building a safe,efficient,reasonable and economical open pit mine transportation system.By designing an efficient transportation system,the transportation cost of ore can be reduced,thereby increasing the operating profit of mining enterprises.The main contents of the research are as follows:(1)The road network of the open pit mine was studied using the GPS track data of the truck.On the basis of data preprocessing,through road node identification,trajectory clustering,centerline fitting and other operations,a true open-pit mine road network was established,which was laid a foundation for the path planning of truck.(2)This article further analyzes the driving consumption process of trucks in open-pit mines,and comprehensively considers the impact of factors such as truck weight,truck speed,road slope,road type and transport distance.The work process of truck transportation is divided into the sum of the work of overcoming the resistance of the ramp and the work of increasing the potential energy of the ore.Based on this,a optimal path planning model of the open-pit mine truck is established with the goal of minimizing the total transportation work.(3)Considering the particularity of the open pit mine,an improved ant colony algorithm suitable for solving the open pit path problem is proposed based on the basic ant colony algorithm research.The road transport work is used as a heuristic factor to calculate the transition probability between nodes,the adaptive dynamic factor is used to adjust the update process of the population pheromone,and the diversity of the population is enriched by incorporating crossover operators and mutation operators to improve the algorithm global convergence ability.(4)Taking an open-pit mine in Henan Province as an example,the transportation road network of the mine was established using historical truck track data.By analyzing the topological structure of the road network,the established optimal path planning model and solving algorithm are used to solve the optimal transportation path.Through the comparative analysis of the results of two models,the results show that the path planning model established in this paper can well meet the actual production needs.The research content of this paper further enriches the relevant theoretical achievements of open pit transportation,and provides new solutions for solving the problem of open pit truck transportation route planning.