通过对煤炭业循环经济模式的分类研究，发现尚无在循环经济模式基础上分析主业、产业链影响因 素之间数量关系的科学方法，而系统仿真方法比较适合解决这类问题。依托煤炭主业，设计了一套适于解决类 似大型复杂系统的仿真方法，指出了这种方法的适用范围和局限性。并以YM集团为例，对其循环经济发展模 式进行了详细的验证，得出YM集团发展循环经济有益的结论，同时说明了该方法在分析煤炭行业循环经济发 展模式方面的适用性与有效性。

According to classification research on circular economy patterns,  it is revealed that no scientific method has been applied on the basis of circular economy pattern to analyze quantitative relations between factors affecting main industry and industry chains. System simulation method is a better choice for solving such kind of problem. Thus, this article proposes a set of simulation method for analyzing large complex system such as coal industry,  and also points out range of application and limitations.  In the case study of YM Group,  simulation method is used to make detailed analyses of its circular economy pattern,  and results show that developing circular economy is beneficial to YM Group. Moreover, this study also illustrates the applicability of simulation method in analyzing circular economy pattern in coal industry.