Boundaries of open pits are the most important parameter of open-cast mining of deposits, methods of determination of which, unfortunately, are still not correct enough, which negatively affects the efficiency of open-cast mining. The Department of Open-Cast Mining and Rock Destruction conducts continuous research on the development and improvement of methods for establishing the final contours of pits, approving the results in the design studies of specific deposits. The last object of the research was the iron ore deposit Kurkenpakhk of AO Olkon, which is currently not exploited. In the course of the research there was a doubt in the expediency of using the traditional method of levelling the bottom of the pit. The authors propose a new method of levelling the bottom of the pit.
On the example of Mikhailovsky and Yakovlevsky deposits the problems of development of rich iron ores of KMA related to their deep occurrence, taking into account difficult engineering-geological conditions of construction of underground mines and harmful consequences of ore mining by open pit for the natural environment are considered. The results of complex tests of physical-mechanical properties of loose rich ores, which have not been sufficiently studied yet, are presented. Forecast of land alienation and soil contamination caused by an increase in the volume of overburden during further exploitation of Mikhailovsky open pit is given. For the Yakovlevsky mine, the most effective layered systems of development of the ore body with stowing of the mined-out space were studied. The descending order of mining of blocks with the device on the top layer of protective overlap to prevent subsidence of the overlying strata with the formation of channels of hydraulic connection with the coal aquifer is recommended.
Определение границ карьера — одна из основных задач проектирования разработки месторождения. Ее решение обычно осуществляется в три стадии. Рассчитывается граничный коэффициент вскрыши, затем выбирается метод оконтуривания, и, наконец, по выбранному методу карьер оконтуривается ...
Правильно выбранная производительность карьера по полезному ископаемому всегда являлась залогом устойчивой и экономичной работы горного предприятия. И чем сложнее геологическое строение месторождения, тем труднее задача по определению производительности. Коашвинское апатито-нефелиновое месторождение комбината «Апатит» относится к числу очень сложных. Оно представлено четырьмя рудными телами с конфигурацией, характеризующейся в плане и на глубину частыми вздутиями и пережимами ...
