ImPRovINg The effICIeNCy of USINg DUmP TRUCKS UNDeR CoNDITIoNS of CAReeR AT oPeN mININg woRKS Purpose. Increasing the efficiency of road transport by changing the structure of slopes of transport inclines in opencast mining of mineral deposits. methodology. The paper uses a theoretical analysis based on the theory of the use of the acting inertia forces of a moving dump truck to overcome the elevated slopes of the traffic route. The analysis and generalization of the ana lytical method for solving the kinematics equations of uniformly variable (equally accelerated or equally slow) motion of dump trucks was used to confirm the theoretical results and accepted assumptions. findings. The paper attempts to generalize, develop and offer more complete solutions to the problems of rational use of dump trucks by using the inertia forces of a moving dump truck to overcome the elevated slopes of the career roads. There is given an analytical solution of traction and braking problems when trucks overcome the slopes of transport inclines in open field mining. It is shown that these solutions are the simplest for practical use when design ing new career routes, while exploiting transport inclines of deep quarries. originality. Mathematical models of dynamic processes occurring during the implementation of the tangential traction force of a motorized dump truck developed on elevated slopes of career paths are developed. They differ from those known by the fact that inertia forces resulting from acceleration during the motion of a dump truck are used to overcome elevated gradients in the transport inclines of quarries. As a result of numerical simulation, the regularities of changes in the speed of movement of dump trucks with alternating horizontal and inclined road sections depending on their length and slope angles were established. This allows improving the process according to the criterion of surmounted elevated slopes of open pit transport inclines, cutting their length almost by half, reducing the time of movement of dump trucks and improving performance during transportation of rock mass. Practical value. The results obtained in the work, presented in the form of calculation formulas, make it possible to reasonably calculate the routes of transport inclines for the open mining of mineral deposits at the quarry design stage. This ensures reduction of the size of the quarries cutback in the development of deep quarries.
The technology of downhole uranium production used at mining enterprises in Kazakhstan is described, the factors affecting the decrease in the filtration characteristics of productive formations are studied in detail, and an effective method is described for increasing the downhole uranium production. The applied methods of intensification of downhole production at uranium mining enterprises are considered, the positive and negative aspects of the electroplasma and chemical methods are discussed. Calculations of the working values of the hydro-wave method of destruction of clogging formations in the well and the parameters of the solution supply during repair and restoration work are presented. Based on the calculation of the operating parameters, a diagram of the dependence of the operating cycle of the hydropercussion machine on the flow rate of the water supplied to the machine is constructed. The developed 3D model of the hydropercussion apparatus for increasing the permeability of the productive horizon is presented. The advantages of the use of the hydrodynamic method for restoring the permeability of the productive horizon in the conditions of downhole uranium production in difficult mining and geological conditions are disclosed. The optimal parameters for intensification of downhole uranium production in difficult mining and geological conditions are recommended, and a method for using a hydropercussion apparatus in combination with traditional methods of well regeneration is developed.
Summary. The article is concerned with the applicability of the robotic transportation complex of automotive barrows for haulage transportation along various transport routes of mining enterprises. The simultaneous application of robotic transport and telemetry links makes the door-to-door transportation possible, i.e. direct transportation from the starting to the final point avoiding intermediate storage and a considerable part of auxiliary equipment.
РОБОТИЗИРОВАННЫЙ ТРАНСПОРТНЫЙ КОМПЛЕКС САМОХОДНЫХ МАШИН ДЛЯ ПЕРЕМЕЩЕНИЯ ГОРНОЙ МАССЫ ПРИ ОТКРЫТОЙ РАЗРАБОТКЕ МЕСТОРОЖДЕНИЙАннотация. В статье рассмотрена возможность применения роботизированного транспортного комплекса (РТК) самоходных машин для перемещения грузов на различных маршрутах горных предприятий. Совместное использование роботизированного транспорта и телеметрических связей позволяет осуществлять бесперегрузочную транспортировку от начального до конечного пунктов, исключая промежуточные складирования и значительную часть дополнительного оборудования.
Повышение экологичности использования карьерных автосамосвалов в составе автопоездов… Кольга А.Д., Московка Е.В.Автопоезд из карьерных автосамосвалов УДК. 622.68
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