STUDY ON THE LIFE CYCLE AND EVOLUTION LAW OF SPATIAL STRUCTURE OF MINING CITY

The city is a kind of resource city which and primary process was domination.It is one of the results when economy has developed into a certain historical stage,and it is urgent to achieve transformation current complicated domestic and international environment.The spatial structure of city has instability according to potent influence of natural resources and industry development.Based on the economy and determining development life cycle,this paper selects typical cities--oil city of Daqing,non-ferrous metal city Jinchang and coal city Datong as research samples,comb city development life cycle,focus on the general law of the orderly evolution of spatial structure.The paper argues that the cities should experience mining economy-new manufacturing economy-the integrated urban full development process,Space structure evolution process of cities corresponding to the whole shows that the phase characteristics is discrete punctate of economy-partition polarization of new manufacturing-the polarization group and circling of the integrated urban.In economy period introduction,growth,maturity and decline / transition,and the population,functions,economic structure,and other aspects shows different characteristics corresponding to different stages,among that the spatial structure's features reflects in during introduction: concentration to center and sheet expansion;in growth period: expand by jumping enclave and sheet to concentration to the center;in the maturity phase: expand by jumping enclave and sheet expansion;in the stage of decline / transition: cities shrinking and scraping / jumping dispersed and development to the center.The ordering evolution law of spatial structure shows that mining economy is dominant the early stages of the development space,the spatial structure functions with the upgrade and evolution,the space effect of present concentration and scattered alternate.