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Several Economic Problems for Extraction of Coal Resources

Several Economic Problems for Extraction of Coal Resources
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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 mathematical 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. 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 mathematical 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.
出处 《International Journal of Mining Science and Technology》 SCIE EI 1998年第2期190-193,共4页 矿业科学技术学报(英文版)
关键词 COAL RESOURCES optimal mining quantity net PROFIT TECHNOLOGICAL progress coal resources, optimal mining quantity, net profit, technological progress
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