Several Economic Problems for Extraction of Coal Resources

摘要

There exist both economic problems and environmental problems in the development and utilization of coal resource. A mathematical model is introduced by which the maximal profit of coal enterprise can be obtained. The first order necessary conditions and second order necessary conditions to solve the mathe- matical model are offered. In addition, by use of coal price model with the property of transcendental logarithm optimal production rate and mine lift are proposed in this paper. Several factors that effect net profit of coal enterprises are analyzed.