Simulation of industrial structure adjustment and optimal policy for mining cities based on system dynamics

Based on the basic view of the transformation of mining cities，by using system dynamics theory and method，takes a typical coal city-Huainan city as an example，analyzes the interactions of three typical industries：high technology industries，tourism and mining，sets up the city's transformation process simulation model，and then fits function relationship of variables，in order to predict the trend of urban economy over the next 20 years，and get the resource operation law of the three subsystems in the process of transformation.What’s more，comparative simulation and analysis of different industry is carried out to put forward the policy for the government investment，which helps improve the planning of transformation initiative and scientific for mining cities.Research proves that under the existing investment structure，changing the leading position of the coal industry needs 10 years or so，and it is optimal policy choice that keeps big growth of government investment in new and high technology industries，to keep stable economic growth.