Statistical data on the reliability of self-propelled mine cars (SPMC), operating in the potassium mines of the Verkhnekamskoye potassium and magnesium salts deposit are analyzed. Identified the main nodes that limit the resource SPMC. It has been proven that the most common failures of self-propelled cars are the failure of wheel hubs, bevel gears and traveling electric motors. The analysis of the system of maintenance and repair of mine self-propelled cars. It is indicated that the planning and preventive system of SPMC repairs is characterized by low efficiency and high material costs: car maintenance is often carried out upon the occurrence of a failure, which leads to prolonged downtime not only of a specific haul truck, but of the entire mining complex. A method for assessing the technical condition of the electromechanical part of a mine self-propelled car by the nature of power consumption is proposed. This method allows you to control the loading of the drives of the mine self-propelled car, as well as to assess the technical condition of the drives of the delivery machines in real time. Upon expiration of the standard service life of a mine propelled car specified in the operational documentation, its further operation is prohibited and the car is subject to industrial safety expertise. As part of the examination, it is necessary to determine the operating time and calculate the service life of a mine self-propelled car outside the regulatory period. A method has been developed for determining the residual service life of mine car on the basis of instrumentation control data in the conditions of potash mines.
The "transition zone" of the deposit is characterized and correlated with the horizon of disintegration and reduction processes of hypergenesis zones. Visual and mineralogical criteria for determining the boundaries of intervals characterized by reduced recoveries from tungsten trioxide ores were tested.
In the case of seismic impact on a pipeline fixed on supports, the vibrations are composed of a transverse and a longitudinal component. A transverse wave of large amplitude can cause an emergency shutdown of a hydraulic transportation line.
Economic indicators of geothermal system significantly depend on the wellhead potential of coolant brought to the surface by wells. In this regard, during the exploration and operation of geothermal systems, the assessment of heat losses in production wells is of particular relevance ...
Age relations between large-crystalline mica - muscovite and. biotite in pegmatite bodies are, as is known, a small link in deciphering the genesis of granitic pegmatites. Therefore, in the works devoted to the consideration of the general problem of the genesis of pegmatite bodies, the question of age relationships of intergrowing mica is also touched upon to a greater or lesser extent. To date, several complementary and directly opposite views on this iss. have been formed.
