中文摘要：

煤炭城市共生产业链是否稳定受到诸多因素的影响。根据国内学者应用合作博弈中Shapley值对共生产业链稳定性的相关分析,综合有关微观经济学理论可知产品价格对链内企业经济收益影响最大,进而影响共生产业链稳定。＂链内产品价格联盟＂的存在符合共生产业链的企业链内合作、链外竞争的特点,为了探究此价格联盟是否存在及其影响因素,假设产品的链内外价格存在一定差距,应用产品的链外价格等于链内价格与链内外差价之和的价格结构,以煤炭城市横线耦合共生产业链中最具代表性的和共栖互利型的煤矸石—火电共生产业链为例,构建煤炭企业和火电企业的产品价格博弈模型,通过博弈均衡解的分析得到共生产业链产品定价特点、价格差存在的影响因素及影响方式等结果。在上述分析基础之上针对共生产业链产品定价得出了链内价格只与链内企业相关、价格差是否存在受链内外企业共同影响的结论,提出了提高能源和资源利用效率、降低物流成本将更有助于企业获利从而稳定共生产业链等建议。

英文摘要：

The stability of the symbiotic industry chain of coal cities is influenced by many factors.Domestic scholars analyze the stability of the symbiotic chain through the Shapley value of the cooperative game theory,indicating that when the income of all symbiotic cooperation parties in the chain created is less than their own individual income,the symbiotic chain will achieve the objectives of dissolution or will automatically terminate.In accordance with the micro-economic theory,price is the most affected factor of the enterprises＇economic benefits within the chain,thereby affecting the stability of the symbiotic chain.The existence of＂Price alliance＂is consistent with the characteristic of the symbiotic industry chain,that enterprises within the chain should be co-operative.While facing the outside,enterprises should be competitive.In order to explore whether this price alliance exists,and its influencing factors if it exists,it is assumed that there is a price certain gap between internal and external enterprises,after the application that the outside price is equal to the inside price plus the price gap.Taking the coal-fired cogeneration industry chain as an example,the author built a game model,which is the most representative and the mutually beneficial symbiosis chain of the horizontal coupling industrial chain in coal cities.Based on a comprehensive consideration on the important factors,such as skill level and price elasticity,the authors built the coal enterprise-fire power enterprise product price game model.Through analysis on the equilibrium solution of the game,it was found that the inside price including the cangue inside price and the electricity inside price is only related to in-chain enterprise＇s related factors,while the price gap has more complex mechanisms.Through analyzing the characteristics of industry chain product pricing and associated influencing factors as well as the impact ways on the price gap existing,it was indicated that the inside pricing is only concerned by internal cha