The Research Of Investment Economical Assessment Method And Application For Mine Projects

With the rapid development of China's economy and science and technology, the scale and complexity of the mine engineering investment project become more and more large. Random interference factors often emerge in the process of implementation, which leads to more risk. On the other hand, with the developing of reform and open policy and constant improvement of market economy,the source of capital becomes more marketable, causing the large influence of economy, society and environment. All of these results demand that the decision-making should be enhanced. In order to ensure the real benefit, the implementation of economic evaluation in the decision-making stage of project. It is absolutely necessary that objective, reasonable and effective analysis and integrative evaluation of risk be made, corresponding measure of avoiding risk, standard of project investment and controlling cost be taken.The regulated fundamental methods are used such as the systematic theory and the real diagnosis research. Finance economic evaluation model and risk assessment model for the mine project investment project are set up, thus they are applied in economic evaluation in the mine project investment.First, the economic evaluation is introduced simply. Then it is concentrated on the project's financial economic evaluation, qualitatively discussed on the mineral supply situations, separately obtained from two aspects of the expense and the benefit, and the NPV appraisal model is established, as well as the risk different measure method. Following analyzing the above, the frame model of the mine project investment risk is proposed, and the probability distribution of risk factor influence is described to the investor vividly.Second, the application of the Monte-Carlo method has overcome some shortcomings, existed in present risk assessment method. Meanwhile as a result of the computer performance enhancement, hundreds time of analog computation may be completed in instantaneous time. Using the visualization window, it is possible to cause the computation of the intermediate result-economic evaluation target value to demonstration.Finally, taking mine as the example, the application of economic evaluation model and risk assessment model are applied in computation to the Net Present Value and the essential risk factor for mine investment project, achieving the function of the investment project's economic evaluation.The investment analysis of engineering project is a very complex system evaluation. The paper puts merely forth effort to provide reference for the decision-maker.