A definition and evaluation index system of aging mines

It is a inevitable process that the regional coal production is from growth to the recession and until closed because of the limited storage characteristics of coal resources. At present, the designation of aging mines is not clear, the definition of aging mine is also differ and has not form a complete system. Based on the above analysis, this paper aims to put forward the concept of aging mines, construct evaluation index system of aging mines and determine the weight of index layer by application of analytic hierarchy process (AHP) basing on the mine life cycle analysis and previous research results  combination, it is expectation that the results come to be the bases of development planning determination of mining enterprises at microscopic level, and the references of  long-term laws and regulations formulation for resource-based cities and even countries at macroscopic level.