Open AccessTechnical and economic assessment of existing and projected enterprises for the development of placer mines
Author(s) -
M V Kostromin,
Татьяна Панина
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/663/1/012036
Subject(s) - placer mining , economic indicator , placer deposit , mining engineering , human settlement , computer science , geology , geography , archaeology , economics , geochemistry , macroeconomics
The development of placer mines is a significant source of replenishment of Russian reserves with precious stones and precious metals. Currently, the development of placers is carried out in the vast territory of the Far East, Transbaikal, Eastern and Western Siberia, Altai, Ural. The efficiency of mining operations is significantly influenced by geological, mine engineering, climatic factors, the physical and mechanical properties of rocks, the physical state of placers (frozen, thawed), location (distance from settlements and communication routes), the percentage of clay material, etc. Based on these factors, the technical and economic indicators of the same-type mining machines (for example, drag diggers) often differ significantly (sometimes several times). In this regard, the method of complex technical and economic assessment of operating and projected mining enterprises for the development of placer mines has been developed. The method includes the evaluation of the mines according to the following technical and economic indicators. 1. Indicators characterizing operating conditions. 2. Indicators characterizing the potential of an enterprise. 3. Indicators characterizing the enterprise work results. Mathematical processing of all groups of factors in natural units of measurement is not possible due to the difference in units of measurement and a large amount of variation. Therefore, it is necessary to bring all the indicators in the appropriate form. These requirements coincide with the system of indexing (coding) of the source data, in compliance with the necessary principles. The article provides an example of coding. Further, the classification of the enterprises using the Euclidean metric is carried out. The proposed criteria are the basis for a comprehensive assessment of mines, as well as for obtaining linear regression techniques, a simple regulatory function that establishes the reciprocity between the calculated values of the economic results from the conditions and capabilities of the enterprises. The deviation of the calculated value from the actual value allows to judge how effectively (or not effectively) an enterprise operates under the appropriate conditions and opportunities. The article provides examples of determining the results of the activities of particular Transbaikal enterprises by this method.