Improvement and application of earned value analysis in coal project management

It would have some deficiencies in traditional earned value analysis methodology when were applied into schedule measurement methods and cost measurement methods in a project management, in light of this, the approach to improve cost measurement methods was presented. And, based on property of analysis task total time difference, the conception of weight earned value was introduced to resolve vital path problem of schedule measurement methods; meanwhile, the weight earned value calculating formulas and analysis processes were given in this paper, which could provide a more accurate basis for coal project measurement.