The accumulating capacity of tailing ponds by technology infusion of pulp preliminary clarification in the alluvium charts with its subsequent thickening and storage in the form of a highly concentrated pulp at the bottom of the pond is proposed by authors in the work. For the first time, the time dependence of filling a temporary pond on the ratio of the initial and condensed slurry concentrations for such technologies is obtained. The formula for calculating the degree of condensation is proposed. It provides the parameters selection and justification of equipment for removing water from a temporary pond as the map is filled with the accumulating capacity restoration of tailing ponds. The calculation results for the proposed dependencies allow us to establish: the necessary values of the thickening degree of the hydromixture, the possible intervals of the change in the pulp flow before and after thickening, as well as the volume of water taken from the temporary pond, depending on the concentration of the slurry entering the pond from the alluvium maps, its volumetric flow rate , geometric parameters of the technology for waste storage and the operation duration of a temporary pond.

A mathematical model of a diesel with swashplates is proposed. The results of studying its design, kinematics, and dynamics are presented. The kinematic chain of the statically determinate mechanism of the engine is schematized. The kinematic relations are obtained taking into account the presence of Hooke's joints and swashplates. A mathematical model of the dynamic system of the engine is described. A numerical example is given. The kinematics and dynamic processes of the engine are studied Introduction. Development of internal-combustion engines to reduce fuel consumption, raise reliability, and improve performance is an important scientific and technical problem in modern mechanical engineering. Diesels have a number of advantages over gasoline engines [5,7,13], including simpler design, fuel of lower grade, less fuel consumption, higher fire safety, and easier maintenance. Moreover, diesels have no ignition system and use higher compression. These and some other advantages (including higher efficiency) promote the wider use of diesels in the autotractor industry, defense technology, and other fields of engineering. The creation of new diesels involves several stages such as design, pilot study, and design refinement. The disadvantages of diesels are higher cost and shorter service life.An important stage in the creation of a new diesel is to choose a kinematic diagram of its mechanism. Modern diesels and other internal-combustion engines have a crankshaft to convert the translational motion of the pistons into rotation, which causes a number of design and technological difficulties. Two-stroke diesels show considerable promise for development as engines that use swashplates with additional kinematic chains attached to the drive shaft to transmit the operating power from the piston group to the actuators. Such a design of internal-combustion engines is not very popular now. Similar designs are presented in [10]. Note that there are patented designs [15,16] of a diesel with swashplates and analogs of Hooke's joints, which testify the great capabilities of such engines. Advantages of this design are simplicity, much lower radial loads on the piston and cylinder, and much lower sliding speeds in the joints of connecting rods and pistons, which is a well-founded precondition for longer life and better performance and efficiency than those of the conventional engines. Research efforts are being made at the E. O. Paton Institute of Electric Welding to improve the design of diesel engines based on these patents [15,16]. As indicated above, the two-stroke engine [15,16] has no crankshafts, each of its cylinders has two pistons (moving in opposite directions during the combustion stroke and toward each other during the compression stroke), the angles between the connecting rods and the cylinder axis are insignificant (up to 2°). All this simplifies the design, reduces the weight and cost, decreases the size, improves the efficiency and wear resistance, promotes good balance of the system, including the combustion-gene...