基于博弈分析的煤炭城市共生产业链产品定价研究

he stability of the symbiotic industry chain of the coal cities is influenced by many factors. The domestic scholars analyze the stability of the symbiotic chain through the Shapley value of the cooperative game theory, and the conclusions show that when the income of the all symbiotic cooperation parties in the chain created is less than their own individual income, the symbiotic chain will achieve the set objectives for the dissolution or will automatic terminate，in accordance with the micro-economic theory ,we know that the price is the most affected factor of the enterprise＇s economic benefits within the chain, thereby affecting the stability of the symbiotic chain. The existence of ＂Price alliance＂ is consistent with the character of the symbiotic industry chain, that enterprises within the chain should be co-operative, while when face the outside enterprises should be competitive. In order to explore whether this price alliance exist, and its influencing factors if it exists, we suppose the there is a price certain gap between internal and external enterprises, after the application the outside price is equal to the inside price plus the price gap, take the coal - fired cogeneration industry chain as the example to build the game model, which is most representative and the mutually beneficial symbiosis chain of the horizontal coupling industrial chain in coal cities. Base on the comprehensive consideration on the important factors such as skill level, price elasticity, we build the coal enterprise-fire power enterprise product price game model. Analysis on the equilibrium solution of the game, we know that the inside price which including the cangue inside price and the electricity inside price only related with in-chain enterprise＇s related factors, while the price gap has a more complex mechanisms. Through the analyze on the characteristics of the industry chain product pricing and the influencing factors and the impact ways on the price gap existing, the results such as inside pricing only concern with internal chain enterprises, the existence of price gap is influenced both by internal and external enterprises are turn out. Then when pricing the inside price, the enterprises can only concerned about in-chain businesses, by doing this can improve pricing accuracy and relevance. Meanwhile in order to maximize the price obtained for their own benefit, we put forward the advices that improve the use efficiency of energy and resource, reduce logistics costs will help increase earnings of the enterprises and stable symbiotic chain.