Simulation And Optimization Of The Coal Mine Roadway Vehicle Scheduling Problem

Trackless rubber wheel car is used in mine auxiliary transportation.With the extension of underground mining area and the extension of working face,the auxiliary transportation network becomes more and more complicated,and the number of forks increases.Simple and random scheduling strategy and improper allocation of transportation roadway will cause traffic congestion at the crossing and affect operation efficiency.In this paper,from the perspective of vehicle scheduling,through the simulation of roadway vehicle operation system,reasonable scheduling strategy is proposed,and optimization suggestions are put forward for the design of roadway vehicle avoidance chamber.The research helps to improve the efficiency of mine auxiliary transportation system.The main elements of this paper are as follows:(1)The queuing theory is used to analyze,model and simulate the roadway vehicle transport system.This paper introduces the transportation equipment of the auxiliary transportation system and the current scheduling rules.The mathematical model of roadway vehicle queuing system is established based on stochastic process and queuing theory.Flexsim software is used to simulate the running process of the vehicles at the fork of coal mine roadway based on the current scheduling rules.(2)The optimisation of the configuration of the roadway turnout shelter is proposed and validated.A mathematical planning model of the single-aisle shelter location problem is established and solved using Monte Carlo simulation and traversal method based on MATLAB software.Through the simulation run of the aforementioned simulation model,the rationality of the configuration scheme is verified.(3)Modelling and optimisation of the vehicle scheduling problem at roadway turnouts.An integer planning model for the scheduling of vehicles at roadway turnouts is established and a solution algorithm based on Tabu Search is proposed for the situation where the number of vehicles and arrival times of the auxiliary transport system are determined.A robustness analysis is carried out by adding a random perturbation factor to the arrival time.A signal dynamic adaptive control algorithm is also designed for the general case to improve the signal scheduling mechanism and enhance the traffic efficiency of the turnout lane.Finally,the effectiveness of the optimisation method is verified through simulation.