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Determination of Mining Limits (ML) for each of Open-Pit (OP) and Underground (Ug) is one of the most significant part impacts the economic aspects. Optimization process for the mentioned objective in both of OP and Ug mining was done on the economic block model. In this paper, the applied Optimization Algorithms (OA)s for ML determination extensively were studied. Because of the major difference between the shape and form of mining limits in two main exploitation methods, implementation of the algorithms in searc...

Under similar conditions, surface mining is generally regarded to be more advantageous than underground mining. In the selection between surface and underground exploitation methods, there are a number of most significant factors must be briefly studied and determined. In this study, these factors were extensively studied and then considering effect of these factors on surface and underground mining, a comparison was done.

The economical investigation is one of the most important stages in the mine planning, as it can be a useful guide in the mine exploitation. The iron ore district of Gol-E-Gohar (GEG) is located about 60 km south-west of the city of Sirjan, in the Kerman Province of the Islamic Republic of Iran. Six anomalies are known and for about 10 years, Area 1 ore is mined and processed for the recovery of a dry as well as a wet concentrate. The proven reserves of Area 1 were about 265 million tonnes, whereas near to 100 mil...

Few algorithms are available for economic optimization of stope boundaries and underground mining area. The algorithms may be classified as rigorous and heuristic. The rigorous algorithms are those which benefit from the mathematical proof and provide the true optimal solution according to the conditions and environment they are applied. The heuristic algorithms are based on searching for the optimal solution according to some rules. They may not guarantee to find the true optimum but provide the approximate solut...

The Gol-E-Gohar (GEG) Iron ore Complex is located in Kerman province of Iran, and is situated on the Sanandaj-Sirjan metamorphic belt, which has been played a large part in the history of the tectonics of Iran plate margin. Based on the modern exploration activities, six magnetic anomalies in this district have been recognized. Now a large-scale open-pit mine is being developed on this deposit. This paper aims to re-evaluate the pre-designed slope angles of Anomaly 1 of GEG Open pit. In the preliminary design the ...

The use of numerical systems to evaluate the appropriateness of a mining method for a particular ore deposit has been in use for some time. These systems rely on ranking a finite number of geometrical, geological, and geomechanical parameters to arrive at a rating value for different mining methods. Nowadays application of fuzzy logic has been paid attention for selection of mining exploitation method. The mining method selection (MMS) system takes account of the uncertainty associated with boundary conditions of ...

One of the most critical and complicated steps in mine design is to select an suitable mining method based upon geological, geotechnical, geographical and economical parameters. Since there are many factors involved for the selection of mining method, which is decision-making process, the problem is very difficult to solve. In this paper, Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) with 18 criteria is used to develop a suitable mining method for the Reza Abad ballclay \& bauxite ore dep...

The major impact of early mining resulted from the establishment of this mine tailings, which neutralized hundreds hectares of land, which due poor management and neglect have been subjected to varying degrees of water and wind erosion. Environmental impacts range from water pollution (acid mine drainage derived from oxidation of sulphides, mainly pyrite, and the heavy metals in the Mooteh mine tailings), air pollution in the form of airborne dust from unrehabilitated, partially rehabilitated and reprocessed mine ...