Calculation of Boundary Stripping Ratio Errors at the Stage of Quarries Designing

Abstract

The open pit mining method of solid minerals extracting is widely used both in Russia and in the whole world, and sets a general direction of mining industry development as its main tool, at least for the next decades. This is due to its significant advantages compared with other methods of minerals extraction, especially with underground method. This conclusion is made considering production capacity of mining and enrichment enterprises, mining safety, productivity and working conditions, investment and operating costs, level of mechanization, automation, robotization, informatization and computerization of production, full use of mineral resources. However, the practical realization of these advantages of the open pit method of mining, neutralization and reduction or elimination of its shortcomings (environmental damage) requires thorough and reliable design solutions, their timely and accurate adjustment, application of scientific methods and modern technical and technological means. This is especially important and relevant for design, construction, operation, reconstruction and reclamation of open pits developing complex and large deposits of scarce and valuable mineral resources. Erroneous and insufficiently substantiated design solutions and their implementation lead to a significant decrease in the efficiency of open pit mining.

Improving the methods for determining the promising boundaries of iron ore open pits

“…Of course, the determination of the boundaries of open pit mining should be carried out taking into account the conditions of stability of the massif of boundary rocks, which are performed by modern remote methods [17,18]. When determining the boundaries of the open pits according to known calculation principles, the economic calculating ratio is calculated according to technical and economic indicators, which are achieved at the time of design and its value is constant [19][20][21].…”

Justification of the method of determination of the border overburden ratio

“…However, the existing methods of determining the cutoff overburden ratio [16][17][18] do not take into account the competitiveness of the iron ore products of the designed enterprise in the world market.…”

Dominujące uwarunkowania adaptacji kompleksu górniczego w warunkach środowiska dynamicznego

“…The consequence of which is the accumulation of overburden backlog at enterprises, the occurrence of unscheduled temporarily non-working sides at the expense of the violation of the principle of proportional conduct of work and the development of the open-pit space, as well as the formation of temporarily non-working sides in the mining zone, which is unacceptable. Periodically, but inevitably, there is a need to revise previous projects due to the deviation of the actual state of mining operations from the design solutions [15,16]. Therefore, the mining development strategy should take into account the possibility and mechanisms of adaptive adjustment of the intensity of deposit development when the demand for commodity products changes, both at the level of an individual open-pit or a group of mine pits, and at the level of a group of mines that are part of the same company.…”